LegalizeDAG.cpp revision 6f3ddef7c51f03945644ad0e69068dfb24d4b092
13e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===-- LegalizeDAG.cpp - Implement SelectionDAG::Legalize ----------------===// 2edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman// 33e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// The LLVM Compiler Infrastructure 43e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 54ee451de366474b9c228b4e5fa573795a715216dChris Lattner// This file is distributed under the University of Illinois Open Source 64ee451de366474b9c228b4e5fa573795a715216dChris Lattner// License. See LICENSE.TXT for details. 7edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman// 83e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 93e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// This file implements the SelectionDAG::Legalize method. 113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 143d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng#include "llvm/Analysis/DebugInfo.h" 153d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng#include "llvm/CodeGen/Analysis.h" 163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/CodeGen/MachineFunction.h" 17acd80ac7bb19f8bdfa55336d567c9ecbe695c8b8Jim Laskey#include "llvm/CodeGen/MachineJumpTableInfo.h" 183d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng#include "llvm/CodeGen/SelectionDAG.h" 1916c29b5f285f375be53dabaa73e3e91107485fe4Anton Korobeynikov#include "llvm/Target/TargetFrameLowering.h" 203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/Target/TargetLowering.h" 21e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner#include "llvm/Target/TargetData.h" 223d4ce1108520a4dcf31cb01523e145d286ee64c1Evan Cheng#include "llvm/Target/TargetMachine.h" 23adf6a965a321372c640845407195594835921eb4Chris Lattner#include "llvm/CallingConv.h" 243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/Constants.h" 25c10305743c313558405079452138f03124e87581Reid Spencer#include "llvm/DerivedTypes.h" 269adc0abad3c3ed40a268ccbcee0c74cb9e1359feOwen Anderson#include "llvm/LLVMContext.h" 27993aacedfdc3f156f667b4efa280ee79eab3b898David Greene#include "llvm/Support/Debug.h" 28e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach#include "llvm/Support/ErrorHandling.h" 29dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands#include "llvm/Support/MathExtras.h" 3045cfe545ec8177262dabc70580ce05feaa1c3880Chris Lattner#include "llvm/Support/raw_ostream.h" 317971514755a08ec156a1b9c0f7f05d67919c56b7Chris Lattner#include "llvm/ADT/DenseMap.h" 32f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner#include "llvm/ADT/SmallVector.h" 3300755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner#include "llvm/ADT/SmallPtrSet.h" 343e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerusing namespace llvm; 353e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 363e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// SelectionDAGLegalize - This takes an arbitrary SelectionDAG as input and 383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// hacks on it until the target machine can handle it. This involves 393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating value sizes the machine cannot handle (promoting small sizes to 403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// large sizes or splitting up large values into small values) as well as 413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating operations the machine cannot handle. 423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// This code also does a small amount of optimization and recognition of idioms 443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// as part of its processing. For example, if a target does not support a 453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 'setcc' instruction efficiently, but does support 'brcc' instruction, this 463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// will attempt merge setcc and brc instructions into brcc's. 473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnernamespace { 496f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohmanclass SelectionDAGLegalize { 5055e59c186303ff02c0be7429da3b1b36c347f164Dan Gohman const TargetMachine &TM; 51d858e90f039f5fcdc2fa93035e911a5a9505cc50Dan Gohman const TargetLowering &TLI; 523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SelectionDAG &DAG; 533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 546f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Libcall insertion helpers. 5562c1d00dfd38996f381edae55e1028b8e52a1107Duncan Sands 566f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman /// LastCALLSEQ_END - This keeps track of the CALLSEQ_END node that has been 576f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman /// legalized. We use this to ensure that calls are properly serialized 586f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman /// against each other, including inserted libcalls. 596f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SDValue LastCALLSEQ_END; 6062c1d00dfd38996f381edae55e1028b8e52a1107Duncan Sands 616f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman /// IsLegalizingCall - This member is used *only* for purposes of providing 626f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman /// helpful assertions that a libcall isn't created while another call is 636f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman /// being legalized (which could lead to non-serialized call sequences). 646f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman bool IsLegalizingCall; 656f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 666f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman /// LegalizedNodes - For nodes that are of legal width, and that have more 676f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman /// than one use, this map indicates what regularized operand to use. This 686f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman /// allows us to avoid legalizing the same thing more than once. 696f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman DenseMap<SDValue, SDValue> LegalizedNodes; 706f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 716f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman void AddLegalizedOperand(SDValue From, SDValue To) { 726f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LegalizedNodes.insert(std::make_pair(From, To)); 736f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // If someone requests legalization of the new node, return itself. 746f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (From != To) 756f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LegalizedNodes.insert(std::make_pair(To, To)); 766f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 776f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Transfer SDDbgValues. 786f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman DAG.TransferDbgValues(From, To); 796f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 808afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner 813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerpublic: 82975716af1b9a09274df6c2d92683449015bd8564Dan Gohman explicit SelectionDAGLegalize(SelectionDAG &DAG); 833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner void LegalizeDAG(); 853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 86456a93afcec7740c45cafa8354317f7b17987a6dChris Lattnerprivate: 876f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman /// LegalizeOp - Return a legal replacement for the given operation, with 886f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman /// all legal operands. 896f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SDValue LegalizeOp(SDValue O); 90fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 917ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue OptimizeFloatStore(StoreSDNode *ST); 927ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 936867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// PerformInsertVectorEltInMemory - Some target cannot handle a variable 946867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 956867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// is necessary to spill the vector being inserted into to memory, perform 966867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// the insert there, and then read the result back. 97475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue PerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, 983f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 993f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, 1003f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 101826695281344e3a4c4d44d73dd155107aafd689bDan Gohman 1025a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1035a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// performs the same shuffe in terms of order or result bytes, but on a type 1045a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// whose vector element type is narrower than the original shuffle type. 1055a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 106e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl, 1076e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach SDValue N1, SDValue N2, 1085a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SmallVectorImpl<int> &Mask) const; 109fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1106f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman bool LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 1116f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SmallPtrSet<SDNode*, 32> &NodesLeadingTo); 1126f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 113e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson void LegalizeSetCCCondCode(EVT VT, SDValue &LHS, SDValue &RHS, SDValue &CC, 114775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DebugLoc dl); 115fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 11647b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman SDValue ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, bool isSigned); 117abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher SDValue ExpandLibCall(RTLIB::Libcall LC, EVT RetVT, const SDValue *Ops, 118abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher unsigned NumOps, bool isSigned, DebugLoc dl); 119abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher 120e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach std::pair<SDValue, SDValue> ExpandChainLibCall(RTLIB::Libcall LC, 121e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach SDNode *Node, bool isSigned); 122f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman SDValue ExpandFPLibCall(SDNode *Node, RTLIB::Libcall Call_F32, 123f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, RTLIB::Libcall Call_F80, 124f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128); 1258983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov SDValue ExpandIntLibCall(SDNode *Node, bool isSigned, 1268983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I8, 1278983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I16, 1288983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I32, 1298983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I64, 130f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128); 13165279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng void ExpandDivRemLibCall(SDNode *Node, SmallVectorImpl<SDValue> &Results); 132475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 133e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue EmitStackConvert(SDValue SrcOp, EVT SlotVT, EVT DestVT, DebugLoc dl); 134475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandBUILD_VECTOR(SDNode *Node); 135475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandSCALAR_TO_VECTOR(SDNode *Node); 1364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman void ExpandDYNAMIC_STACKALLOC(SDNode *Node, 1374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results); 1384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue ExpandFCOPYSIGN(SDNode *Node); 139e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue ExpandLegalINT_TO_FP(bool isSigned, SDValue LegalOp, EVT DestVT, 140af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 141e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue PromoteLegalINT_TO_FP(SDValue LegalOp, EVT DestVT, bool isSigned, 142af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 143e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue PromoteLegalFP_TO_INT(SDValue LegalOp, EVT DestVT, bool isSigned, 144af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 145475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1468a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBSWAP(SDValue Op, DebugLoc dl); 1478a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBitCount(unsigned Opc, SDValue Op, DebugLoc dl); 148475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1493d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue ExpandExtractFromVectorThroughStack(SDValue Op); 150cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene SDValue ExpandInsertToVectorThroughStack(SDValue Op); 1517ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue ExpandVectorBuildThroughStack(SDNode* Node); 1528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 153e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach std::pair<SDValue, SDValue> ExpandAtomic(SDNode *Node); 154e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 1556f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman void ExpandNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1566f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman void PromoteNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner}; 1583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1605a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1615a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// performs the same shuffe in terms of order or result bytes, but on a type 1625a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// whose vector element type is narrower than the original shuffle type. 1639008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman/// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 1646e9926108a69efbc11f1cadf947e98500e4d4228Jim GrosbachSDValue 1656e9926108a69efbc11f1cadf947e98500e4d4228Jim GrosbachSelectionDAGLegalize::ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl, 1665a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue N1, SDValue N2, 1679008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVectorImpl<int> &Mask) const { 1685a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumMaskElts = VT.getVectorNumElements(); 1695a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumDestElts = NVT.getVectorNumElements(); 1709008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman unsigned NumEltsGrowth = NumDestElts / NumMaskElts; 1719008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1729008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(NumEltsGrowth && "Cannot promote to vector type with fewer elts!"); 1739008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1749008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman if (NumEltsGrowth == 1) 1759008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &Mask[0]); 1766e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach 1779008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVector<int, 8> NewMask; 1785a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman for (unsigned i = 0; i != NumMaskElts; ++i) { 1799008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman int Idx = Mask[i]; 1809008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman for (unsigned j = 0; j != NumEltsGrowth; ++j) { 1816e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach if (Idx < 0) 1829008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(-1); 1839008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman else 1849008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(Idx * NumEltsGrowth + j); 1854352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner } 18615684b29552393553524171bff1913e750f390f8Rafael Espindola } 1875a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman assert(NewMask.size() == NumDestElts && "Non-integer NumEltsGrowth?"); 1889008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(TLI.isShuffleMaskLegal(NewMask, NVT) && "Shuffle not legal?"); 1899008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &NewMask[0]); 1904352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 1914352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 192975716af1b9a09274df6c2d92683449015bd8564Dan GohmanSelectionDAGLegalize::SelectionDAGLegalize(SelectionDAG &dag) 19355e59c186303ff02c0be7429da3b1b36c347f164Dan Gohman : TM(dag.getTarget()), TLI(dag.getTargetLoweringInfo()), 194ea0270298de4d2a4186454fc39a6836e99271f1dDan Gohman DAG(dag) { 1953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAGLegalize::LegalizeDAG() { 1986f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LastCALLSEQ_END = DAG.getEntryNode(); 1996f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman IsLegalizingCall = false; 2006f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 2016f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // The legalize process is inherently a bottom-up recursive process (users 2026f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // legalize their uses before themselves). Given infinite stack space, we 2036f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // could just start legalizing on the root and traverse the whole graph. In 2046f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // practice however, this causes us to run out of stack space on large basic 2056f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // blocks. To avoid this problem, compute an ordering of the nodes where each 2066f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // node is only legalized after all of its operands are legalized. 207f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman DAG.AssignTopologicalOrder(); 2086f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman for (SelectionDAG::allnodes_iterator I = DAG.allnodes_begin(), 2096f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman E = prior(DAG.allnodes_end()); I != llvm::next(E); ++I) 2106f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LegalizeOp(SDValue(I, 0)); 21162c1d00dfd38996f381edae55e1028b8e52a1107Duncan Sands 2126f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Finally, it's possible the root changed. Get the new root. 2136f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SDValue OldRoot = DAG.getRoot(); 2146f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman assert(LegalizedNodes.count(OldRoot) && "Root didn't get legalized?"); 2156f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman DAG.setRoot(LegalizedNodes[OldRoot]); 2166f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 2176f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LegalizedNodes.clear(); 2186f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 2196f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Remove dead nodes now. 2206f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman DAG.RemoveDeadNodes(); 2216f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman} 2226f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 2236f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 2246f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman/// FindCallEndFromCallStart - Given a chained node that is part of a call 2256f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman/// sequence, find the CALLSEQ_END node that terminates the call sequence. 2266f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohmanstatic SDNode *FindCallEndFromCallStart(SDNode *Node, int depth = 0) { 2276f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Nested CALLSEQ_START/END constructs aren't yet legal, 2286f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // but we can DTRT and handle them correctly here. 2296f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (Node->getOpcode() == ISD::CALLSEQ_START) 2306f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman depth++; 2316f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman else if (Node->getOpcode() == ISD::CALLSEQ_END) { 2326f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman depth--; 2336f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (depth == 0) 2346f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return Node; 2356f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 2366f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (Node->use_empty()) 2376f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return 0; // No CallSeqEnd 2386f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 2396f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // The chain is usually at the end. 2406f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SDValue TheChain(Node, Node->getNumValues()-1); 2416f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (TheChain.getValueType() != MVT::Other) { 2426f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Sometimes it's at the beginning. 2436f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman TheChain = SDValue(Node, 0); 2446f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (TheChain.getValueType() != MVT::Other) { 2456f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Otherwise, hunt for it. 2466f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman for (unsigned i = 1, e = Node->getNumValues(); i != e; ++i) 2476f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (Node->getValueType(i) == MVT::Other) { 2486f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman TheChain = SDValue(Node, i); 2496f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman break; 2506f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 2516f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 2526f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Otherwise, we walked into a node without a chain. 2536f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (TheChain.getValueType() != MVT::Other) 2546f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return 0; 255a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings } 2566f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 2576f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 2586f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman for (SDNode::use_iterator UI = Node->use_begin(), 2596f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman E = Node->use_end(); UI != E; ++UI) { 2606f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 2616f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Make sure to only follow users of our token chain. 2626f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SDNode *User = *UI; 2636f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) 2646f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (User->getOperand(i) == TheChain) 2656f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (SDNode *Result = FindCallEndFromCallStart(User, depth)) 2666f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return Result; 2676f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 2686f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return 0; 2696f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman} 2706f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 2716f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman/// FindCallStartFromCallEnd - Given a chained node that is part of a call 2726f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman/// sequence, find the CALLSEQ_START node that initiates the call sequence. 2736f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohmanstatic SDNode *FindCallStartFromCallEnd(SDNode *Node) { 2746f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman int nested = 0; 2756f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman assert(Node && "Didn't find callseq_start for a call??"); 2766f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman while (Node->getOpcode() != ISD::CALLSEQ_START || nested) { 2776f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Node = Node->getOperand(0).getNode(); 2786f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman assert(Node->getOperand(0).getValueType() == MVT::Other && 2796f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman "Node doesn't have a token chain argument!"); 2806f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman switch (Node->getOpcode()) { 2816f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman default: 2822ba60e593012ba9b2a9d20b86733eadca288bcb2Dan Gohman break; 2836f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman case ISD::CALLSEQ_START: 2846f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (!nested) 2856f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return Node; 2866f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman nested--; 2876f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman break; 2886f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman case ISD::CALLSEQ_END: 2896f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman nested++; 2906f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman break; 2916f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 2926f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 2936f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return 0; 2946f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman} 2956f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 2966f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman/// LegalizeAllNodesNotLeadingTo - Recursively walk the uses of N, looking to 2976f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman/// see if any uses can reach Dest. If no dest operands can get to dest, 2986f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman/// legalize them, legalize ourself, and return false, otherwise, return true. 2996f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman/// 3006f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman/// Keep track of the nodes we fine that actually do lead to Dest in 3016f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman/// NodesLeadingTo. This avoids retraversing them exponential number of times. 3026f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman/// 3036f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohmanbool SelectionDAGLegalize::LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 3046f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SmallPtrSet<SDNode*, 32> &NodesLeadingTo) { 3056f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (N == Dest) return true; // N certainly leads to Dest :) 3066f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 3076f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // If we've already processed this node and it does lead to Dest, there is no 3086f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // need to reprocess it. 3096f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (NodesLeadingTo.count(N)) return true; 3106831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3116f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // If the first result of this node has been already legalized, then it cannot 3126f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // reach N. 3136f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (LegalizedNodes.count(SDValue(N, 0))) return false; 3146f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 3156f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Okay, this node has not already been legalized. Check and legalize all 3166f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // operands. If none lead to Dest, then we can legalize this node. 3176f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman bool OperandsLeadToDest = false; 3186f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) 3196f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman OperandsLeadToDest |= // If an operand leads to Dest, so do we. 3206f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LegalizeAllNodesNotLeadingTo(N->getOperand(i).getNode(), Dest, 3216f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman NodesLeadingTo); 3226f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 3236f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (OperandsLeadToDest) { 3246f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman NodesLeadingTo.insert(N); 3256f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return true; 326c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 3276831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3286f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Okay, this node looks safe, legalize it and return false. 3296f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LegalizeOp(SDValue(N, 0)); 3306f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return false; 3316831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 3326831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3339f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// ExpandConstantFP - Expands the ConstantFP node to an integer constant or 3349f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// a load from the constant pool. 3356f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohmanstatic SDValue ExpandConstantFP(ConstantFPSDNode *CFP, bool UseCP, 3366f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SelectionDAG &DAG, const TargetLowering &TLI) { 337004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng bool Extend = false; 33833c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen DebugLoc dl = CFP->getDebugLoc(); 339004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 340004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // If a FP immediate is precise when represented as a float and if the 341004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // target can do an extending load from float to double, we put it into 342004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // the constant pool as a float, even if it's is statically typed as a 343aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // double. This shrinks FP constants and canonicalizes them for targets where 344aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // an FP extending load is the same cost as a normal load (such as on the x87 345aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // fp stack or PPC FP unit). 346e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = CFP->getValueType(0); 3474fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman ConstantFP *LLVMC = const_cast<ConstantFP*>(CFP->getConstantFPValue()); 3489f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng if (!UseCP) { 349825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert((VT == MVT::f64 || VT == MVT::f32) && "Invalid type expansion"); 3507111b02c734c992b8c97d9918118768026dad79eDale Johannesen return DAG.getConstant(LLVMC->getValueAPF().bitcastToAPInt(), 351825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (VT == MVT::f64) ? MVT::i64 : MVT::i32); 352279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng } 353279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng 354e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OrigVT = VT; 355e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SVT = VT; 356825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson while (SVT != MVT::f32) { 357825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SVT = (MVT::SimpleValueType)(SVT.getSimpleVT().SimpleTy - 1); 3587720cb3823d5b5868f9b88b0127277820edcb562Dan Gohman if (ConstantFPSDNode::isValueValidForType(SVT, CFP->getValueAPF()) && 359ef12057737229452c17983faa20857dba441ef05Evan Cheng // Only do this if the target has a native EXTLOAD instruction from 360ef12057737229452c17983faa20857dba441ef05Evan Cheng // smaller type. 3610329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng TLI.isLoadExtLegal(ISD::EXTLOAD, SVT) && 362aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner TLI.ShouldShrinkFPConstant(OrigVT)) { 363db125cfaf57cc83e7dd7453de2d509bc8efd0e5eChris Lattner Type *SType = SVT.getTypeForEVT(*DAG.getContext()); 364baf3c404409d5e47b13984a7f95bfbd6d1f2e79eOwen Anderson LLVMC = cast<ConstantFP>(ConstantExpr::getFPTrunc(LLVMC, SType)); 365ef12057737229452c17983faa20857dba441ef05Evan Cheng VT = SVT; 366ef12057737229452c17983faa20857dba441ef05Evan Cheng Extend = true; 367ef12057737229452c17983faa20857dba441ef05Evan Cheng } 368004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng } 369004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 370475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(LLVMC, TLI.getPointerTy()); 3711606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 3726f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (Extend) 3736f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return DAG.getExtLoad(ISD::EXTLOAD, dl, OrigVT, 3746f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman DAG.getEntryNode(), 3756f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman CPIdx, MachinePointerInfo::getConstantPool(), 3766f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman VT, false, false, Alignment); 3776f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return DAG.getLoad(OrigVT, dl, DAG.getEntryNode(), CPIdx, 3786f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman MachinePointerInfo::getConstantPool(), false, false, 3796f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Alignment); 380004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng} 381004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 382f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedStore - Expands an unaligned store to 2 half-size stores. 3836f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohmanstatic 3846f3ddef7c51f03945644ad0e69068dfb24d4b092Dan GohmanSDValue ExpandUnalignedStore(StoreSDNode *ST, SelectionDAG &DAG, 3856f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman const TargetLowering &TLI) { 386475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = ST->getChain(); 387475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = ST->getBasePtr(); 388475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Val = ST->getValue(); 389e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Val.getValueType(); 390907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen int Alignment = ST->getAlignment(); 391bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = ST->getDebugLoc(); 39283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ST->getMemoryVT().isFloatingPoint() || 39383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands ST->getMemoryVT().isVector()) { 39423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT intVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits()); 39505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 39605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a bitconvert of the value to the integer type of the 39705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // same size, then a (misaligned) int store. 39805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // FIXME: Does not handle truncating floating point stores! 399bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue Result = DAG.getNode(ISD::BITCAST, dl, intVT, Val); 4006f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return DAG.getStore(Chain, dl, Result, Ptr, ST->getPointerInfo(), 4016f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman ST->isVolatile(), ST->isNonTemporal(), Alignment); 40205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 4031b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman // Do a (aligned) store to a stack slot, then copy from the stack slot 4041b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman // to the final destination using (unaligned) integer loads and stores. 4051b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman EVT StoredVT = ST->getMemoryVT(); 4061b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman EVT RegVT = 4071b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman TLI.getRegisterType(*DAG.getContext(), 4081b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman EVT::getIntegerVT(*DAG.getContext(), 4091b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman StoredVT.getSizeInBits())); 4101b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman unsigned StoredBytes = StoredVT.getSizeInBits() / 8; 4111b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman unsigned RegBytes = RegVT.getSizeInBits() / 8; 4121b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman unsigned NumRegs = (StoredBytes + RegBytes - 1) / RegBytes; 4131b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman 4141b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman // Make sure the stack slot is also aligned for the register type. 4151b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(StoredVT, RegVT); 4161b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman 4171b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman // Perform the original store, only redirected to the stack slot. 4181b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman SDValue Store = DAG.getTruncStore(Chain, dl, 4191b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman Val, StackPtr, MachinePointerInfo(), 4201b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman StoredVT, false, false, 0); 4211b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 4221b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman SmallVector<SDValue, 8> Stores; 4231b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman unsigned Offset = 0; 4241b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman 4251b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman // Do all but one copies using the full register width. 4261b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman for (unsigned i = 1; i < NumRegs; i++) { 4271b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman // Load one integer register's worth from the stack slot. 4281b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman SDValue Load = DAG.getLoad(RegVT, dl, Store, StackPtr, 4291b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman MachinePointerInfo(), 4301b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman false, false, 0); 4311b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman // Store it to the final location. Remember the store. 4321b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, Ptr, 4331b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman ST->getPointerInfo().getWithOffset(Offset), 4341b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman ST->isVolatile(), ST->isNonTemporal(), 4351b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman MinAlign(ST->getAlignment(), Offset))); 4361b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman // Increment the pointers. 4371b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman Offset += RegBytes; 4381b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 4391b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman Increment); 4401b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 4411b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman } 4421b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman 4431b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman // The last store may be partial. Do a truncating store. On big-endian 4441b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman // machines this requires an extending load from the stack slot to ensure 4451b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman // that the bits are in the right place. 4461b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 4471b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman 8 * (StoredBytes - Offset)); 4481b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman 4491b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman // Load from the stack slot. 4501b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Store, StackPtr, 4511b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman MachinePointerInfo(), 4521b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman MemVT, false, false, 0); 4531b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman 4541b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, Ptr, 4551b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman ST->getPointerInfo() 4561b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman .getWithOffset(Offset), 4571b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman MemVT, ST->isVolatile(), 4581b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman ST->isNonTemporal(), 4591b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman MinAlign(ST->getAlignment(), Offset))); 4601b32896bd2a6e001c8513fcf182d5a92ab7d487aDan Gohman // The order of the stores doesn't matter - say it with a TokenFactor. 4616f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 4626f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Stores.size()); 463907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 46483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(ST->getMemoryVT().isInteger() && 46583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands !ST->getMemoryVT().isVector() && 466907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen "Unaligned store of unknown type."); 467f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Get the half-size VT 468bceddbdc919fc2ca7bc8c3911586ba93367686f0Ken Dyck EVT NewStoredVT = ST->getMemoryVT().getHalfSizedIntegerVT(*DAG.getContext()); 46983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands int NumBits = NewStoredVT.getSizeInBits(); 470f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int IncrementSize = NumBits / 8; 471f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 472f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Divide the stored value in two parts. 47395771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson SDValue ShiftAmount = DAG.getConstant(NumBits, 47495771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(Val.getValueType())); 475475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = Val; 476bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Hi = DAG.getNode(ISD::SRL, dl, VT, Val, ShiftAmount); 477f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 478f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Store the two parts 479475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store1, Store2; 480bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store1 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Lo:Hi, Ptr, 481da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo(), NewStoredVT, 4821e559443a17d1b335f697551c6263ba60d5dd827David Greene ST->isVolatile(), ST->isNonTemporal(), Alignment); 483bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 484f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 485dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands Alignment = MinAlign(Alignment, IncrementSize); 486bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store2 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Hi:Lo, Ptr, 487da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo().getWithOffset(IncrementSize), 4881e559443a17d1b335f697551c6263ba60d5dd827David Greene NewStoredVT, ST->isVolatile(), ST->isNonTemporal(), 4891e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 490f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 4916f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Store1, Store2); 492f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 493f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 494f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedLoad - Expands an unaligned load to 2 half-size loads. 4956f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohmanstatic 4966f3ddef7c51f03945644ad0e69068dfb24d4b092Dan GohmanSDValue ExpandUnalignedLoad(LoadSDNode *LD, SelectionDAG &DAG, 4976f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman const TargetLowering &TLI) { 498475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = LD->getChain(); 499475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = LD->getBasePtr(); 500e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = LD->getValueType(0); 501e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT LoadedVT = LD->getMemoryVT(); 502bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = LD->getDebugLoc(); 50383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (VT.isFloatingPoint() || VT.isVector()) { 50423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT intVT = EVT::getIntegerVT(*DAG.getContext(), LoadedVT.getSizeInBits()); 50505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 50605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a (misaligned) integer load of the same size, 50705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // then bitconvert to floating point or vector. 508ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue newLoad = DAG.getLoad(intVT, dl, Chain, Ptr, LD->getPointerInfo(), 509ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->isVolatile(), 5101e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), LD->getAlignment()); 511bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue Result = DAG.getNode(ISD::BITCAST, dl, LoadedVT, newLoad); 51205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (VT.isFloatingPoint() && LoadedVT != VT) 513bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, VT, Result); 514907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen 5156f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SDValue Ops[] = { Result, Chain }; 5166f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return DAG.getMergeValues(Ops, 2, dl); 517ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner } 518bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 519ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Copy the value to a (aligned) stack slot using (unaligned) integer 520ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // loads and stores, then do a (aligned) load from the stack slot. 521ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner EVT RegVT = TLI.getRegisterType(*DAG.getContext(), intVT); 522ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner unsigned LoadedBytes = LoadedVT.getSizeInBits() / 8; 523ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner unsigned RegBytes = RegVT.getSizeInBits() / 8; 524ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner unsigned NumRegs = (LoadedBytes + RegBytes - 1) / RegBytes; 525ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 526ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Make sure the stack slot is also aligned for the register type. 527ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue StackBase = DAG.CreateStackTemporary(LoadedVT, RegVT); 528ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 529ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 530ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SmallVector<SDValue, 8> Stores; 531ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue StackPtr = StackBase; 532ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner unsigned Offset = 0; 533ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 534ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Do all but one copies using the full register width. 535ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner for (unsigned i = 1; i < NumRegs; i++) { 536ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Load one integer register's worth from the original location. 537ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Load = DAG.getLoad(RegVT, dl, Chain, Ptr, 538ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(Offset), 539ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->isVolatile(), LD->isNonTemporal(), 540ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MinAlign(LD->getAlignment(), Offset)); 54105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 542ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, StackPtr, 5436229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner MachinePointerInfo(), false, false, 0)); 544ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Increment the pointers. 545ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Offset += RegBytes; 546ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 547ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 548ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Increment); 54905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 550ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 551ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // The last copy may be partial. Do an extending load. 552ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 553ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 8 * (LoadedBytes - Offset)); 554a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Chain, Ptr, 555ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(Offset), 556ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MemVT, LD->isVolatile(), 557ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->isNonTemporal(), 558ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MinAlign(LD->getAlignment(), Offset)); 559ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Follow the load with a store to the stack slot. Remember the store. 560ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // On big-endian machines this requires a truncating store to ensure 561ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // that the bits end up in the right place. 562ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, StackPtr, 563ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(), MemVT, 564ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, 0)); 565ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 566ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // The order of the stores doesn't matter - say it with a TokenFactor. 567ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 568ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Stores.size()); 569ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 570ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Finally, perform the original load only redirected to the stack slot. 571a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Load = DAG.getExtLoad(LD->getExtensionType(), dl, VT, TF, StackBase, 572ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(), LoadedVT, false, false, 0); 573ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 574ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Callers expect a MERGE_VALUES node. 5756f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SDValue Ops[] = { Load, TF }; 5766f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return DAG.getMergeValues(Ops, 2, dl); 577907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 57883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(LoadedVT.isInteger() && !LoadedVT.isVector() && 579e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner "Unaligned load of unsupported type."); 580e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner 5818155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // Compute the new VT that is half the size of the old one. This is an 5828155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // integer MVT. 58383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned NumBits = LoadedVT.getSizeInBits(); 584e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewLoadedVT; 58523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson NewLoadedVT = EVT::getIntegerVT(*DAG.getContext(), NumBits/2); 586e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner NumBits >>= 1; 587fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 588e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned Alignment = LD->getAlignment(); 589e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned IncrementSize = NumBits / 8; 590f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ISD::LoadExtType HiExtType = LD->getExtensionType(); 591f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 592f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If the original load is NON_EXTLOAD, the hi part load must be ZEXTLOAD. 593f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (HiExtType == ISD::NON_EXTLOAD) 594f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio HiExtType = ISD::ZEXTLOAD; 595f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 596f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Load the value in two parts 597475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 598f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (TLI.isLittleEndian()) { 599a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getPointerInfo(), 600ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner NewLoadedVT, LD->isVolatile(), 6011e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), Alignment); 602bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 603f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 604a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, 605ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 606ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner NewLoadedVT, LD->isVolatile(), 6076e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach LD->isNonTemporal(), MinAlign(Alignment,IncrementSize)); 608f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 609a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getPointerInfo(), 610ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner NewLoadedVT, LD->isVolatile(), 6111e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), Alignment); 612bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 613f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 614a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, 615ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 616ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner NewLoadedVT, LD->isVolatile(), 6176e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach LD->isNonTemporal(), MinAlign(Alignment,IncrementSize)); 618f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 619f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 620f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // aggregate the two parts 62195771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson SDValue ShiftAmount = DAG.getConstant(NumBits, 62295771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(Hi.getValueType())); 623bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::SHL, dl, VT, Hi, ShiftAmount); 624bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::OR, dl, VT, Result, Lo); 625f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 626825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 627f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Hi.getValue(1)); 628f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 6296f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SDValue Ops[] = { Result, TF }; 6306f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return DAG.getMergeValues(Ops, 2, dl); 631f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 632912095becac923ff614d7b07728eb345ada67765Evan Cheng 6336867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// PerformInsertVectorEltInMemory - Some target cannot handle a variable 6346867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 6356867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// is necessary to spill the vector being inserted into to memory, perform 6366867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// the insert there, and then read the result back. 637475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize:: 638bb5da918545efb54857a09c983a5a7f22a7e04d4Dale JohannesenPerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, SDValue Idx, 639bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl) { 640475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1 = Vec; 641475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp2 = Val; 642475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = Idx; 643fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 6446867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // If the target doesn't support this, we have to spill the input vector 6456867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // to a temporary stack slot, update the element, then reload it. This is 6466867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // badness. We could also load the value into a vector register (either 6476867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // with a "move to register" or "extload into register" instruction, then 6486867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // permute it into place, if the idx is a constant and if the idx is 6496867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // supported by the target. 650e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp1.getValueType(); 651e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 652e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT IdxVT = Tmp3.getValueType(); 653e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PtrVT = TLI.getPointerTy(); 654475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(VT); 6556867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 656ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex(); 657ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 6586867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the vector. 659bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Tmp1, StackPtr, 66085ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getFixedStack(SPFI), 6611e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 6626867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 6636867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Truncate or zero extend offset to target pointer type. 6648e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands unsigned CastOpc = IdxVT.bitsGT(PtrVT) ? ISD::TRUNCATE : ISD::ZERO_EXTEND; 665bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(CastOpc, dl, PtrVT, Tmp3); 6666867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Add the offset to the index. 667aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned EltSize = EltVT.getSizeInBits()/8; 668bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(ISD::MUL, dl, IdxVT, Tmp3,DAG.getConstant(EltSize, IdxVT)); 669bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue StackPtr2 = DAG.getNode(ISD::ADD, dl, IdxVT, Tmp3, StackPtr); 6706867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the scalar value. 67185ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner Ch = DAG.getTruncStore(Ch, dl, Tmp2, StackPtr2, MachinePointerInfo(), EltVT, 6721e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 6736867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Load the updated vector. 674bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getLoad(VT, dl, Ch, StackPtr, 67585ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getFixedStack(SPFI), false, false, 0); 6766867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman} 6776867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 678e9f1015d1f184a51aaadfd03be0846bd5e7d08a2Mon P Wang 6793f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanSDValue SelectionDAGLegalize:: 6803f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, SDValue Idx, DebugLoc dl) { 6813f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (ConstantSDNode *InsertPos = dyn_cast<ConstantSDNode>(Idx)) { 6823f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // SCALAR_TO_VECTOR requires that the type of the value being inserted 6833f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // match the element type of the vector being created, except for 6843f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // integers in which case the inserted value can be over width. 685e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = Vec.getValueType().getVectorElementType(); 6863f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (Val.getValueType() == EltVT || 6873f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman (EltVT.isInteger() && Val.getValueType().bitsGE(EltVT))) { 6883f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ScVec = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, 6893f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Vec.getValueType(), Val); 6903f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6913f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman unsigned NumElts = Vec.getValueType().getVectorNumElements(); 6923f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // We generate a shuffle of InVec and ScVec, so the shuffle mask 6933f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // should be 0,1,2,3,4,5... with the appropriate element replaced with 6943f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // elt 0 of the RHS. 6953f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SmallVector<int, 8> ShufOps; 6963f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0; i != NumElts; ++i) 6973f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman ShufOps.push_back(i != InsertPos->getZExtValue() ? i : NumElts); 6983f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6993f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return DAG.getVectorShuffle(Vec.getValueType(), dl, Vec, ScVec, 7003f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman &ShufOps[0]); 7013f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 7023f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 7033f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return PerformInsertVectorEltInMemory(Vec, Val, Idx, dl); 7043f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman} 7053f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 7067ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::OptimizeFloatStore(StoreSDNode* ST) { 7077ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Turn 'store float 1.0, Ptr' -> 'store int 0x12345678, Ptr' 7087ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: We shouldn't do this for TargetConstantFP's. 7097ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: move this to the DAG Combiner! Note that we can't regress due 7107ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // to phase ordering between legalized code and the dag combiner. This 7117ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // probably means that we need to integrate dag combiner and legalizer 7127ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // together. 7137ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We generally can't do this one for long doubles. 7147ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp1 = ST->getChain(); 7157ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp2 = ST->getBasePtr(); 7167ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp3; 7177ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Alignment = ST->getAlignment(); 7187ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bool isVolatile = ST->isVolatile(); 7191e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = ST->isNonTemporal(); 7207ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = ST->getDebugLoc(); 7217ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(ST->getValue())) { 722825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (CFP->getValueType(0) == MVT::f32 && 72375b10047fc57c30c86bb7c9ea0ee923ff3c33a7eDan Gohman TLI.isTypeLegal(MVT::i32)) { 7247ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF(). 7257ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bitcastToAPInt().zextOrTrunc(32), 726825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::i32); 727da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 728da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner isVolatile, isNonTemporal, Alignment); 729da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner } 730bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 731da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner if (CFP->getValueType(0) == MVT::f64) { 7327ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // If this target supports 64-bit registers, do a single 64-bit store. 73375b10047fc57c30c86bb7c9ea0ee923ff3c33a7eDan Gohman if (TLI.isTypeLegal(MVT::i64)) { 7347ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF().bitcastToAPInt(). 735825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson zextOrTrunc(64), MVT::i64); 736da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 737da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner isVolatile, isNonTemporal, Alignment); 738da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner } 739bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 74075b10047fc57c30c86bb7c9ea0ee923ff3c33a7eDan Gohman if (TLI.isTypeLegal(MVT::i32) && !ST->isVolatile()) { 7417ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, if the target supports 32-bit registers, use 2 32-bit 7427ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // stores. If the target supports neither 32- nor 64-bits, this 7437ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // xform is certainly not worth it. 7447ef3d178660b82d1571757e49f44b004d772a116Eli Friedman const APInt &IntVal =CFP->getValueAPF().bitcastToAPInt(); 74540f8f6264d5af2c38e797e0dc59827cd231e8ff7Jay Foad SDValue Lo = DAG.getConstant(IntVal.trunc(32), MVT::i32); 746825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Hi = DAG.getConstant(IntVal.lshr(32).trunc(32), MVT::i32); 7477ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (TLI.isBigEndian()) std::swap(Lo, Hi); 7487ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 749da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Lo = DAG.getStore(Tmp1, dl, Lo, Tmp2, ST->getPointerInfo(), isVolatile, 750da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner isNonTemporal, Alignment); 7517ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 7527ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DAG.getIntPtrConstant(4)); 753da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Hi = DAG.getStore(Tmp1, dl, Hi, Tmp2, 754da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo().getWithOffset(4), 7551e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, MinAlign(Alignment, 4U)); 7567ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 757825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 7587ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7597ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7607ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7618e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng return SDValue(0, 0); 7627ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 7637ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 7646a109f9d70bf7f75541400145a7a89880cc48166Dan Gohman/// LegalizeOp - Return a legal replacement for the given operation, with 7656a109f9d70bf7f75541400145a7a89880cc48166Dan Gohman/// all legal operands. 7666f3ddef7c51f03945644ad0e69068dfb24d4b092Dan GohmanSDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) { 7676f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (Op.getOpcode() == ISD::TargetConstant) // Allow illegal target nodes. 7686f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return Op; 769fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 7706f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SDNode *Node = Op.getNode(); 7717d2ad624fa749a6d3edac0d94e9c107989c16304Dale Johannesen DebugLoc dl = Node->getDebugLoc(); 772e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner 7731fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 77475b10047fc57c30c86bb7c9ea0ee923ff3c33a7eDan Gohman assert(TLI.getTypeAction(*DAG.getContext(), Node->getValueType(i)) == 77575b10047fc57c30c86bb7c9ea0ee923ff3c33a7eDan Gohman TargetLowering::TypeLegal && 7761fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7771fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman 7781fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 77975b10047fc57c30c86bb7c9ea0ee923ff3c33a7eDan Gohman assert((TLI.getTypeAction(*DAG.getContext(), 78075b10047fc57c30c86bb7c9ea0ee923ff3c33a7eDan Gohman Node->getOperand(i).getValueType()) == 78175b10047fc57c30c86bb7c9ea0ee923ff3c33a7eDan Gohman TargetLowering::TypeLegal || 7821fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman Node->getOperand(i).getOpcode() == ISD::TargetConstant) && 7831fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 7856f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Note that LegalizeOp may be reentered even from single-use nodes, which 7866f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // means that we always must cache transformed nodes. 7876f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 7886f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (I != LegalizedNodes.end()) return I->second; 7896f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 790475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 7916f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SDValue Result = Op; 792456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner bool isCustom = false; 793fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 7948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Figure out the correct action; the way to query this varies by opcode 7956b9a293a0c7d86c07d704da5facb34cc03ce1d02Bill Wendling TargetLowering::LegalizeAction Action = TargetLowering::Legal; 7968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman bool SimpleFinishLegalizing = true; 7973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 7988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_W_CHAIN: 7998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_WO_CHAIN: 8008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_VOID: 8018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAARG: 8028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STACKSAVE: 803825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Action = TLI.getOperationAction(Node->getOpcode(), MVT::Other); 8048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 8068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 8078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 8088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 8098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType()); 8108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: 8128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 813e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT InnerType = cast<VTSDNode>(Node->getOperand(1))->getVT(); 8148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), InnerType); 8158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 817327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman case ISD::ATOMIC_STORE: { 818327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 819327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman Node->getOperand(2).getValueType()); 820327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman break; 821327236cd6c211e54fc6288b0ac2b413901cc0611Eli Friedman } 8223be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SELECT_CC: 8233be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SETCC: 8243be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::BR_CC: { 8253be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CCOperand = Node->getOpcode() == ISD::SELECT_CC ? 4 : 8263be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getOpcode() == ISD::SETCC ? 2 : 1; 8273be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CompareOperand = Node->getOpcode() == ISD::BR_CC ? 2 : 0; 828e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(CompareOperand).getValueType(); 8293be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman ISD::CondCode CCCode = 8303be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman cast<CondCodeSDNode>(Node->getOperand(CCOperand))->get(); 8313be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getCondCodeAction(CCCode, OpVT); 8323be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Action == TargetLowering::Legal) { 8333be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Node->getOpcode() == ISD::SELECT_CC) 8343be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 8353be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getValueType(0)); 8363be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman else 8373be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), OpVT); 8383be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8393be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 8403be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::LOAD: 8428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STORE: 843ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: Model these properly. LOAD and STORE are complicated, and 844ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // STORE expects the unlegalized operand in some cases. 845ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 846ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_START: 8488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_END: 849ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: This shouldn't be necessary. These nodes have special properties 850ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // dealing with the recursive nature of legalization. Removing this 851ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // special case should be done as part of making LegalizeDAG non-recursive. 852ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 853ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: 8558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 8568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SADDO: 8578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SSUBO: 8588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UADDO: 8598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::USUBO: 8608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SMULO: 8618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UMULO: 8628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FPOWI: 8638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 8648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 8658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 866c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach case ISD::EH_SJLJ_SETJMP: 867c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach case ISD::EH_SJLJ_LONGJMP: 868e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach case ISD::EH_SJLJ_DISPATCHSETUP: 869f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // These operations lie about being legal: when they claim to be legal, 870f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // they should actually be expanded. 8718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Action == TargetLowering::Legal) 8738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Expand; 8748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8754a544a79bd735967f1d33fe675ae4566dbd17813Duncan Sands case ISD::INIT_TRAMPOLINE: 8764a544a79bd735967f1d33fe675ae4566dbd17813Duncan Sands case ISD::ADJUST_TRAMPOLINE: 8778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 8788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 8794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // These operations lie about being legal: when they claim to be legal, 8804bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // they should actually be custom-lowered. 8814bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8824bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Action == TargetLowering::Legal) 8834bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TargetLowering::Custom; 8848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8856f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman case ISD::BUILD_VECTOR: 8866f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // A weird case: legalization for BUILD_VECTOR never legalizes the 8876f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // operands! 8886f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // FIXME: This really sucks... changing it isn't semantically incorrect, 8896f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // but it massively pessimizes the code for floating-point BUILD_VECTORs 8906f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // because ConstantFP operands get legalized into constant pool loads 8916f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // before the BUILD_VECTOR code can see them. It doesn't usually bite, 8926f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // though, because BUILD_VECTORS usually get lowered into other nodes 8936f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // which get legalized properly. 8946f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SimpleFinishLegalizing = false; 8956f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman break; 8963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 897d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner if (Node->getOpcode() >= ISD::BUILTIN_OP_END) { 8988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Legal; 8998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 9008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 9018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 904d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner 9058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (SimpleFinishLegalizing) { 9066f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SmallVector<SDValue, 8> Ops, ResultVals; 9078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 9086f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Ops.push_back(LegalizeOp(Node->getOperand(i))); 9098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 9108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: break; 9116f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman case ISD::BR: 9126f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman case ISD::BRIND: 9136f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman case ISD::BR_JT: 9146f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman case ISD::BR_CC: 9156f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman case ISD::BRCOND: 9166f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Branches tweak the chain to include LastCALLSEQ_END 9176f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Ops[0] = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Ops[0], 9186f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LastCALLSEQ_END); 9196f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Ops[0] = LegalizeOp(Ops[0]); 9206f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LastCALLSEQ_END = DAG.getEntryNode(); 9216f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman break; 9228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SHL: 9238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRL: 9248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRA: 9258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTL: 9268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTR: 9278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Legalizing shifts/rotates requires adjusting the shift amount 9288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // to the appropriate width. 9296f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (!Ops[1].getValueType().isVector()) 9306f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Ops[1] = LegalizeOp(DAG.getShiftAmountOperand(Ops[0].getValueType(), 9316f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Ops[1])); 9328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 933db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SRL_PARTS: 934db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SRA_PARTS: 935db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SHL_PARTS: 936db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman // Legalizing shifts/rotates requires adjusting the shift amount 937db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman // to the appropriate width. 9386f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (!Ops[2].getValueType().isVector()) 9396f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Ops[2] = LegalizeOp(DAG.getShiftAmountOperand(Ops[0].getValueType(), 9406f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Ops[2])); 9412c9489d6e96d99f77b6c31919805b5e61954deb2Dan Gohman break; 9428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9446f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), Ops.data(), 9456f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Ops.size()), 0); 9468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Action) { 9478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Legal: 9486f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 9496f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman ResultVals.push_back(Result.getValue(i)); 9506f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman break; 9518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Custom: 9528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FIXME: The handling for custom lowering with multiple results is 9538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // a complete mess. 9546f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1 = TLI.LowerOperation(Result, DAG); 9558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Tmp1.getNode()) { 9568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) { 9578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (e == 1) 9588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1); 9598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 9608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1.getValue(i)); 9618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9626f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman break; 9638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FALL THROUGH 9668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Expand: 9676f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman ExpandNode(Result.getNode(), ResultVals); 9686f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman break; 9698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Promote: 9706f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman PromoteNode(Result.getNode(), ResultVals); 9716f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman break; 9726f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 9736f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (!ResultVals.empty()) { 9746f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman for (unsigned i = 0, e = ResultVals.size(); i != e; ++i) { 9756f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (ResultVals[i] != SDValue(Node, i)) 9766f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman ResultVals[i] = LegalizeOp(ResultVals[i]); 9776f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman AddLegalizedOperand(SDValue(Node, i), ResultVals[i]); 9786f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 9796f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return ResultVals[Op.getResNo()]; 980d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner } 9818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 9848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: 985e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#ifndef NDEBUG 986993aacedfdc3f156f667b4efa280ee79eab3b898David Greene dbgs() << "NODE: "; 987993aacedfdc3f156f667b4efa280ee79eab3b898David Greene Node->dump( &DAG); 988993aacedfdc3f156f667b4efa280ee79eab3b898David Greene dbgs() << "\n"; 989e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#endif 99035a389344d21178ee280c2410401b2060b5b879cChris Lattner assert(0 && "Do not know how to legalize this operator!"); 99198ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman 9926f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman case ISD::SRA: 9936f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman case ISD::SRL: 9946f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman case ISD::SHL: { 9956f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Scalarize vector SRA/SRL/SHL. 9966f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman EVT VT = Node->getValueType(0); 9976f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman assert(VT.isVector() && "Unable to legalize non-vector shift"); 9986f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman assert(TLI.isTypeLegal(VT.getScalarType())&& "Element type must be legal"); 9996f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman unsigned NumElem = VT.getVectorNumElements(); 10006f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 10016f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SmallVector<SDValue, 8> Scalars; 10026f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman for (unsigned Idx = 0; Idx < NumElem; Idx++) { 10036f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SDValue Ex = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, 10046f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman VT.getScalarType(), 10056f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Node->getOperand(0), DAG.getIntPtrConstant(Idx)); 10066f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SDValue Sh = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, 10076f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman VT.getScalarType(), 10086f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Node->getOperand(1), DAG.getIntPtrConstant(Idx)); 10096f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Scalars.push_back(DAG.getNode(Node->getOpcode(), dl, 10106f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman VT.getScalarType(), Ex, Sh)); 10116f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 10126f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = DAG.getNode(ISD::BUILD_VECTOR, dl, Node->getValueType(0), 10136f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman &Scalars[0], Scalars.size()); 10146f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman break; 10156f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 10166f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 10176f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman case ISD::BUILD_VECTOR: 10186f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman switch (TLI.getOperationAction(ISD::BUILD_VECTOR, Node->getValueType(0))) { 10196f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman default: assert(0 && "This action is not supported yet!"); 10206f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman case TargetLowering::Custom: 10216f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp3 = TLI.LowerOperation(Result, DAG); 10226f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (Tmp3.getNode()) { 10236f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = Tmp3; 10246f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman break; 10256f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 10266f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // FALLTHROUGH 10276f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman case TargetLowering::Expand: 10286f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = ExpandBUILD_VECTOR(Result.getNode()); 10296f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman break; 10306f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 1031bf923b815d6da97367e3eedab69230918bf128a3Dan Gohman break; 10326f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman case ISD::CALLSEQ_START: { 10336f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SDNode *CallEnd = FindCallEndFromCallStart(Node); 10346f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 10356f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Recursively Legalize all of the inputs of the call end that do not lead 10366f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // to this call start. This ensures that any libcalls that need be inserted 10376f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // are inserted *before* the CALLSEQ_START. 10386f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman {SmallPtrSet<SDNode*, 32> NodesLeadingTo; 10396f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman for (unsigned i = 0, e = CallEnd->getNumOperands(); i != e; ++i) 10406f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LegalizeAllNodesNotLeadingTo(CallEnd->getOperand(i).getNode(), Node, 10416f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman NodesLeadingTo); 10426f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 10436f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 10446f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Now that we have legalized all of the inputs (which may have inserted 10456f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // libcalls), create the new CALLSEQ_START node. 10466f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 10476f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 10486f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Merge in the last call to ensure that this call starts after the last 10496f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // call ended. 10506f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (LastCALLSEQ_END.getOpcode() != ISD::EntryToken) { 10516f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1 = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 10526f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1, LastCALLSEQ_END); 10536f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1 = LegalizeOp(Tmp1); 10546f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 10556f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 10566f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Do not try to legalize the target-specific arguments (#1+). 10576f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (Tmp1 != Node->getOperand(0)) { 10586f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 10596f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Ops[0] = Tmp1; 10606f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), &Ops[0], 10616f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Ops.size()), Result.getResNo()); 10626f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 10636f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 10646f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Remember that the CALLSEQ_START is legalized. 10656f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman AddLegalizedOperand(Op.getValue(0), Result); 10666f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (Node->getNumValues() == 2) // If this has a flag result, remember it. 10676f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 10686f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 10696f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Now that the callseq_start and all of the non-call nodes above this call 10706f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // sequence have been legalized, legalize the call itself. During this 10716f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // process, no libcalls can/will be inserted, guaranteeing that no calls 10726f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // can overlap. 10736f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman assert(!IsLegalizingCall && "Inconsistent sequentialization of calls!"); 10746f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Note that we are selecting this call! 10756f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LastCALLSEQ_END = SDValue(CallEnd, 0); 10766f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman IsLegalizingCall = true; 10776f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 10786f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Legalize the call, starting from the CALLSEQ_END. 10796f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LegalizeOp(LastCALLSEQ_END); 10806f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman assert(!IsLegalizingCall && "CALLSEQ_END should have cleared this!"); 10816f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return Result; 10826f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 10836f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman case ISD::CALLSEQ_END: 10846f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // If the CALLSEQ_START node hasn't been legalized first, legalize it. This 10856f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // will cause this node to be legalized as well as handling libcalls right. 10866f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (LastCALLSEQ_END.getNode() != Node) { 10876f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LegalizeOp(SDValue(FindCallStartFromCallEnd(Node), 0)); 10886f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 10896f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman assert(I != LegalizedNodes.end() && 10906f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman "Legalizing the call start should have legalized this node!"); 10916f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return I->second; 10926f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 10936f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 10946f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Otherwise, the call start has been legalized and everything is going 10956f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // according to plan. Just legalize ourselves normally here. 10966f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 10976f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Do not try to legalize the target-specific arguments (#1+), except for 10986f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // an optional flag input. 10996f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (Node->getOperand(Node->getNumOperands()-1).getValueType() != MVT::Glue){ 11006f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (Tmp1 != Node->getOperand(0)) { 11016f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 11026f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Ops[0] = Tmp1; 11036f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 11046f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman &Ops[0], Ops.size()), 11056f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result.getResNo()); 11066f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 11076f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } else { 11086f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp2 = LegalizeOp(Node->getOperand(Node->getNumOperands()-1)); 11096f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (Tmp1 != Node->getOperand(0) || 11106f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp2 != Node->getOperand(Node->getNumOperands()-1)) { 11116f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 11126f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Ops[0] = Tmp1; 11136f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Ops.back() = Tmp2; 11146f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 11156f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman &Ops[0], Ops.size()), 11166f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result.getResNo()); 11176f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 11186f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman } 11196f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman assert(IsLegalizingCall && "Call sequence imbalance between start/end?"); 11206f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // This finishes up call legalization. 11216f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman IsLegalizingCall = false; 11226f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 11236f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // If the CALLSEQ_END node has a flag, remember that we legalized it. 11246f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman AddLegalizedOperand(SDValue(Node, 0), Result.getValue(0)); 11256f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (Node->getNumValues() == 2) 11266f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman AddLegalizedOperand(SDValue(Node, 1), Result.getValue(1)); 11276f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return Result.getValue(Op.getResNo()); 1128f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::LOAD: { 1129466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng LoadSDNode *LD = cast<LoadSDNode>(Node); 11306f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1 = LegalizeOp(LD->getChain()); // Legalize the chain. 11316f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp2 = LegalizeOp(LD->getBasePtr()); // Legalize the base pointer. 11322d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 1133466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng ISD::LoadExtType ExtType = LD->getExtensionType(); 1134466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng if (ExtType == ISD::NON_EXTLOAD) { 1135e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 11366f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 11376f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1, Tmp2, LD->getOffset()), 11386f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result.getResNo()); 11396f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp3 = Result.getValue(0); 11406f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp4 = Result.getValue(1); 1141fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1142466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng switch (TLI.getOperationAction(Node->getOpcode(), VT)) { 114335a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 1144f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1145f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned load and the target doesn't support it, 1146f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1147bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) { 1148db125cfaf57cc83e7dd7453de2d509bc8efd0e5eChris Lattner Type *Ty = LD->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1149e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 1150f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (LD->getAlignment() < ABIAlignment){ 11516f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 11526f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman DAG, TLI); 11536f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp3 = Result.getOperand(0); 11546f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp4 = Result.getOperand(1); 11556f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp3 = LegalizeOp(Tmp3); 11566f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp4 = LegalizeOp(Tmp4); 1157f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1158f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1159f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 1160466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Custom: 1161466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = TLI.LowerOperation(Tmp3, DAG); 1162ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) { 11636f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp3 = LegalizeOp(Tmp1); 11646f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1165466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1166466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1167466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Promote: { 1168466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Only promote a load of vector type to another. 116983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Cannot promote this load!"); 1170466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Change base type to a different vector type. 1171e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), VT); 1172466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng 1173ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Tmp1 = DAG.getLoad(NVT, dl, Tmp1, Tmp2, LD->getPointerInfo(), 11741e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isVolatile(), LD->isNonTemporal(), 11751e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->getAlignment()); 11766f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp3 = LegalizeOp(DAG.getNode(ISD::BITCAST, dl, VT, Tmp1)); 11776f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1178466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1179f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 1180466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1181fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Since loads produce two values, make sure to remember that we 1182466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // legalized both of them. 11836f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp3); 11846f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp4); 11856f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return Op.getResNo() ? Tmp4 : Tmp3; 11863d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } 1187bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 11883d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner EVT SrcVT = LD->getMemoryVT(); 11893d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned SrcWidth = SrcVT.getSizeInBits(); 11903d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned Alignment = LD->getAlignment(); 11913d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner bool isVolatile = LD->isVolatile(); 11923d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner bool isNonTemporal = LD->isNonTemporal(); 11933d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 11943d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (SrcWidth != SrcVT.getStoreSizeInBits() && 11953d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Some targets pretend to have an i1 loading operation, and actually 11963d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // load an i8. This trick is correct for ZEXTLOAD because the top 7 11973d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // bits are guaranteed to be zero; it helps the optimizers understand 11983d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // that these bits are zero. It is also useful for EXTLOAD, since it 11993d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // tells the optimizers that those bits are undefined. It would be 12003d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // nice to have an effective generic way of getting these benefits... 12013d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Until such a way is found, don't insist on promoting i1 here. 12023d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner (SrcVT != MVT::i1 || 12033d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner TLI.getLoadExtAction(ExtType, MVT::i1) == TargetLowering::Promote)) { 12043d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Promote to a byte-sized load if not loading an integral number of 12053d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // bytes. For example, promote EXTLOAD:i20 -> EXTLOAD:i24. 12063d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned NewWidth = SrcVT.getStoreSizeInBits(); 12073d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner EVT NVT = EVT::getIntegerVT(*DAG.getContext(), NewWidth); 12083d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner SDValue Ch; 12093d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12103d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // The extra bits are guaranteed to be zero, since we stored them that 12113d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // way. A zext load from NVT thus automatically gives zext from SrcVT. 12123d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12133d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ISD::LoadExtType NewExtType = 12143d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ExtType == ISD::ZEXTLOAD ? ISD::ZEXTLOAD : ISD::EXTLOAD; 12153d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12166f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = DAG.getExtLoad(NewExtType, dl, Node->getValueType(0), 12176f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1, Tmp2, LD->getPointerInfo(), 12186f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman NVT, isVolatile, isNonTemporal, Alignment); 12193d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12203d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Ch = Result.getValue(1); // The chain. 12213d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12223d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (ExtType == ISD::SEXTLOAD) 12233d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Having the top bits zero doesn't help when sign extending. 12243d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 12253d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result.getValueType(), 12263d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result, DAG.getValueType(SrcVT)); 12273d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner else if (ExtType == ISD::ZEXTLOAD || NVT == Result.getValueType()) 12283d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // All the top bits are guaranteed to be zero - inform the optimizers. 12293d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getNode(ISD::AssertZext, dl, 12303d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result.getValueType(), Result, 12313d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG.getValueType(SrcVT)); 12323d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12336f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1 = LegalizeOp(Result); 12346f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp2 = LegalizeOp(Ch); 12353d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } else if (SrcWidth & (SrcWidth - 1)) { 12363d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // If not loading a power-of-2 number of bits, expand as two loads. 12373d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(!SrcVT.isVector() && "Unsupported extload!"); 12383d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned RoundWidth = 1 << Log2_32(SrcWidth); 12393d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(RoundWidth < SrcWidth); 12403d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned ExtraWidth = SrcWidth - RoundWidth; 12413d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(ExtraWidth < RoundWidth); 12423d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 12433d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner "Load size not an integral number of bytes!"); 12443d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 12453d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 12463d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner SDValue Lo, Hi, Ch; 12473d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned IncrementSize; 12483d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12493d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (TLI.isLittleEndian()) { 12503d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // EXTLOAD:i24 -> ZEXTLOAD:i16 | (shl EXTLOAD@+2:i8, 16) 12513d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Load the bottom RoundWidth bits. 1252a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, Node->getValueType(0), 12533d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1, Tmp2, 12543d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo(), RoundVT, isVolatile, 12553d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner isNonTemporal, Alignment); 12563d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12573d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Load the remaining ExtraWidth bits. 12583d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner IncrementSize = RoundWidth / 8; 12593d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 12603d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG.getIntPtrConstant(IncrementSize)); 1261a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2, 12623d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 12633d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ExtraVT, isVolatile, isNonTemporal, 12643d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MinAlign(Alignment, IncrementSize)); 12653d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12663d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Build a factor node to remember that this load is independent of 12673d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // the other one. 12683d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 12693d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi.getValue(1)); 12703d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12713d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Move the top bits to the right place. 12723d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 127395771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson DAG.getConstant(RoundWidth, 127495771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(Hi.getValueType()))); 12753d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12763d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Join the hi and lo parts. 12776f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 12783d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } else { 12793d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Big endian - avoid unaligned loads. 12803d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // EXTLOAD:i24 -> (shl EXTLOAD:i16, 8) | ZEXTLOAD@+2:i8 12813d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Load the top RoundWidth bits. 1282a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2, 12833d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo(), RoundVT, isVolatile, 12843d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner isNonTemporal, Alignment); 12853d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12863d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Load the remaining ExtraWidth bits. 12873d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner IncrementSize = RoundWidth / 8; 12883d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 12893d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG.getIntPtrConstant(IncrementSize)); 12903d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Lo = DAG.getExtLoad(ISD::ZEXTLOAD, 1291a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings dl, Node->getValueType(0), Tmp1, Tmp2, 12923d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 12933d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ExtraVT, isVolatile, isNonTemporal, 12943d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MinAlign(Alignment, IncrementSize)); 12953d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12963d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Build a factor node to remember that this load is independent of 12973d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // the other one. 12983d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 12993d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi.getValue(1)); 13003d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 13013d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Move the top bits to the right place. 13023d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 130395771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson DAG.getConstant(ExtraWidth, 130495771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(Hi.getValueType()))); 13053d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 13063d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Join the hi and lo parts. 13076f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 13083d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } 1309f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 13106f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1 = LegalizeOp(Result); 13116f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp2 = LegalizeOp(Ch); 13123d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } else { 13133d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner switch (TLI.getLoadExtAction(ExtType, SrcVT)) { 13143d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner default: assert(0 && "This action is not supported yet!"); 13153d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case TargetLowering::Custom: 13163d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner isCustom = true; 13173d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // FALLTHROUGH 13183d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case TargetLowering::Legal: 13196f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 13206f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1, Tmp2, LD->getOffset()), 13216f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result.getResNo()); 13226f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1 = Result.getValue(0); 13236f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp2 = Result.getValue(1); 13243d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 13253d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (isCustom) { 13266f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp3 = TLI.LowerOperation(Result, DAG); 13273d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (Tmp3.getNode()) { 13286f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1 = LegalizeOp(Tmp3); 13296f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp2 = LegalizeOp(Tmp3.getValue(1)); 13303d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } 1331f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 13323d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // If this is an unaligned load and the target doesn't support it, 13333d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // expand it. 13343d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) { 1335db125cfaf57cc83e7dd7453de2d509bc8efd0e5eChris Lattner Type *Ty = 13363d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getMemoryVT().getTypeForEVT(*DAG.getContext()); 13373d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned ABIAlignment = 13383d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner TLI.getTargetData()->getABITypeAlignment(Ty); 13393d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (LD->getAlignment() < ABIAlignment){ 13406f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 13416f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman DAG, TLI); 13426f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1 = Result.getOperand(0); 13436f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp2 = Result.getOperand(1); 13446f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1 = LegalizeOp(Tmp1); 13456f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp2 = LegalizeOp(Tmp2); 1346f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1347f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 13483d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } 13493d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner break; 13503d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case TargetLowering::Expand: 135175b10047fc57c30c86bb7c9ea0ee923ff3c33a7eDan Gohman if (!TLI.isLoadExtLegal(ISD::EXTLOAD, SrcVT) && TLI.isTypeLegal(SrcVT)) { 13523d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner SDValue Load = DAG.getLoad(SrcVT, dl, Tmp1, Tmp2, 13533d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo(), 13543d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->isVolatile(), LD->isNonTemporal(), 13553d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getAlignment()); 13563d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned ExtendOp; 13573d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner switch (ExtType) { 13583d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case ISD::EXTLOAD: 13593d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ExtendOp = (SrcVT.isFloatingPoint() ? 13603d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ISD::FP_EXTEND : ISD::ANY_EXTEND); 1361f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 13623d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case ISD::SEXTLOAD: ExtendOp = ISD::SIGN_EXTEND; break; 13633d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case ISD::ZEXTLOAD: ExtendOp = ISD::ZERO_EXTEND; break; 13643d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner default: llvm_unreachable("Unexpected extend load type!"); 1365f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 13666f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = DAG.getNode(ExtendOp, dl, Node->getValueType(0), Load); 13676f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1 = LegalizeOp(Result); // Relegalize new nodes. 13686f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp2 = LegalizeOp(Load.getValue(1)); 1369466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1370466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1371c2492c28ef04dbc77c5d47ec81ffc64c5407771fNadav Rotem 1372e9b58d0aac4e89b53a4be0e6f289b66649e1512bNadav Rotem assert(!SrcVT.isVector() && 1373e9b58d0aac4e89b53a4be0e6f289b66649e1512bNadav Rotem "Vector Loads are handled in LegalizeVectorOps"); 1374c2492c28ef04dbc77c5d47ec81ffc64c5407771fNadav Rotem 13753d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // FIXME: This does not work for vectors on most targets. Sign- and 13763d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // zero-extend operations are currently folded into extending loads, 13773d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // whether they are legal or not, and then we end up here without any 13783d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // support for legalizing them. 13793d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(ExtType != ISD::EXTLOAD && 13803d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner "EXTLOAD should always be supported!"); 13813d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Turn the unsupported load into an EXTLOAD followed by an explicit 13823d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // zero/sign extend inreg. 13836f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = DAG.getExtLoad(ISD::EXTLOAD, dl, Node->getValueType(0), 13846f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1, Tmp2, LD->getPointerInfo(), SrcVT, 13856f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LD->isVolatile(), LD->isNonTemporal(), 13866f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LD->getAlignment()); 13873d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner SDValue ValRes; 13883d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (ExtType == ISD::SEXTLOAD) 13893d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ValRes = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 13903d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result.getValueType(), 13913d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result, DAG.getValueType(SrcVT)); 13923d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner else 1393dd11ea4a372b992775f67b64fb703edf2de0d27bDan Gohman ValRes = DAG.getZeroExtendInReg(Result, dl, SrcVT.getScalarType()); 13946f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1 = LegalizeOp(ValRes); // Relegalize new nodes. 13956f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp2 = LegalizeOp(Result.getValue(1)); // Relegalize new nodes. 13963d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner break; 13979d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth } 139801ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 13993d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 14003d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Since loads produce two values, make sure to remember that we legalized 14013d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // both of them. 14026f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp1); 14036f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp2); 14046f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return Op.getResNo() ? Tmp2 : Tmp1; 140501ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 1406f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::STORE: { 14078b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng StoreSDNode *ST = cast<StoreSDNode>(Node); 14086f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1 = LegalizeOp(ST->getChain()); // Legalize the chain. 14096f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp2 = LegalizeOp(ST->getBasePtr()); // Legalize the pointer. 1410d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman unsigned Alignment = ST->getAlignment(); 1411d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman bool isVolatile = ST->isVolatile(); 14121e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = ST->isNonTemporal(); 14138b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 14148b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng if (!ST->isTruncatingStore()) { 14157ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (SDNode *OptStore = OptimizeFloatStore(ST).getNode()) { 14166f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = SDValue(OptStore, 0); 14177ef3d178660b82d1571757e49f44b004d772a116Eli Friedman break; 1418d93d46ee7e0a0e539d42139b85c71b2b8c3968feChris Lattner } 1419fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1420957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman { 14216f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp3 = LegalizeOp(ST->getValue()); 14226f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 14236f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1, Tmp3, Tmp2, 14246f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman ST->getOffset()), 14256f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result.getResNo()); 14268b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 1427e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp3.getValueType(); 14288b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng switch (TLI.getOperationAction(ISD::STORE, VT)) { 142935a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 1430f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1431f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned store and the target doesn't support it, 1432f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1433bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) { 1434db125cfaf57cc83e7dd7453de2d509bc8efd0e5eChris Lattner Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext()); 14356e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach unsigned ABIAlignment= TLI.getTargetData()->getABITypeAlignment(Ty); 1436f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (ST->getAlignment() < ABIAlignment) 14376f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), 14386f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman DAG, TLI); 1439f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1440f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 14418b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Custom: 14426f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1 = TLI.LowerOperation(Result, DAG); 14436f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (Tmp1.getNode()) Result = Tmp1; 14448b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 14456f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman case TargetLowering::Promote: 144683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Unknown legal promote case!"); 1447bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp3 = DAG.getNode(ISD::BITCAST, dl, 14488b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng TLI.getTypeToPromoteTo(ISD::STORE, VT), Tmp3); 14496f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, 14506f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman ST->getPointerInfo(), isVolatile, 14516f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman isNonTemporal, Alignment); 14528b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 14538b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 14542efce0a589e2a688a1a06b5dc2ed0db32ae79924Chris Lattner break; 1455f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 14568b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } else { 14576f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp3 = LegalizeOp(ST->getValue()); 14587e857201f387d004571e6058e2ea709163500f38Duncan Sands 1459e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT StVT = ST->getMemoryVT(); 146083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned StWidth = StVT.getSizeInBits(); 14617e857201f387d004571e6058e2ea709163500f38Duncan Sands 146283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (StWidth != StVT.getStoreSizeInBits()) { 14637e857201f387d004571e6058e2ea709163500f38Duncan Sands // Promote to a byte-sized store with upper bits zero if not 14647e857201f387d004571e6058e2ea709163500f38Duncan Sands // storing an integral number of bytes. For example, promote 14657e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i1 X -> TRUNCSTORE:i8 (and X, 1) 1466adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT NVT = EVT::getIntegerVT(*DAG.getContext(), 1467adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng StVT.getStoreSizeInBits()); 1468a1c415cfc2dba4446021f322e4b7a43534a96f1aNadav Rotem Tmp3 = DAG.getZeroExtendInReg(Tmp3, dl, StVT); 14696f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 14706f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman NVT, isVolatile, isNonTemporal, Alignment); 14717e857201f387d004571e6058e2ea709163500f38Duncan Sands } else if (StWidth & (StWidth - 1)) { 14727e857201f387d004571e6058e2ea709163500f38Duncan Sands // If not storing a power-of-2 number of bits, expand as two stores. 1473bceddbdc919fc2ca7bc8c3911586ba93367686f0Ken Dyck assert(!StVT.isVector() && "Unsupported truncstore!"); 14747e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned RoundWidth = 1 << Log2_32(StWidth); 14757e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(RoundWidth < StWidth); 14767e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned ExtraWidth = StWidth - RoundWidth; 14777e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(ExtraWidth < RoundWidth); 14787e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 14797e857201f387d004571e6058e2ea709163500f38Duncan Sands "Store size not an integral number of bytes!"); 148023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 148123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 1482475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 14837e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned IncrementSize; 14847e857201f387d004571e6058e2ea709163500f38Duncan Sands 14857e857201f387d004571e6058e2ea709163500f38Duncan Sands if (TLI.isLittleEndian()) { 14867e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 X, TRUNCSTORE@+2:i8 (srl X, 16) 14877e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the bottom RoundWidth bits. 1488da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 1489da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner RoundVT, 14901e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, Alignment); 14917e857201f387d004571e6058e2ea709163500f38Duncan Sands 14927e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14937e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1494ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14957e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1496ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 149795771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson DAG.getConstant(RoundWidth, 149895771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(Tmp3.getValueType()))); 1499da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, 1500da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo().getWithOffset(IncrementSize), 1501da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ExtraVT, isVolatile, isNonTemporal, 15027e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 15037e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 15047e857201f387d004571e6058e2ea709163500f38Duncan Sands // Big endian - avoid unaligned stores. 15057e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 (srl X, 8), TRUNCSTORE@+2:i8 X 15067e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the top RoundWidth bits. 1507ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 150895771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson DAG.getConstant(ExtraWidth, 150995771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(Tmp3.getValueType()))); 1510da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getPointerInfo(), 1511da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner RoundVT, isVolatile, isNonTemporal, Alignment); 15127e857201f387d004571e6058e2ea709163500f38Duncan Sands 15137e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 15147e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1515ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 15167e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1517da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, 1518da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo().getWithOffset(IncrementSize), 1519da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ExtraVT, isVolatile, isNonTemporal, 15207e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 15217e857201f387d004571e6058e2ea709163500f38Duncan Sands } 1522c7029805ef35ce9805931067b841e6af11db382eChris Lattner 15237e857201f387d004571e6058e2ea709163500f38Duncan Sands // The order of the stores doesn't matter. 15246f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 15257e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 15267e857201f387d004571e6058e2ea709163500f38Duncan Sands if (Tmp1 != ST->getChain() || Tmp3 != ST->getValue() || 15277e857201f387d004571e6058e2ea709163500f38Duncan Sands Tmp2 != ST->getBasePtr()) 15286f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 15296f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Tmp1, Tmp3, Tmp2, 15306f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman ST->getOffset()), 15316f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result.getResNo()); 15327e857201f387d004571e6058e2ea709163500f38Duncan Sands 15337e857201f387d004571e6058e2ea709163500f38Duncan Sands switch (TLI.getTruncStoreAction(ST->getValue().getValueType(), StVT)) { 153435a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 15357e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Legal: 15367e857201f387d004571e6058e2ea709163500f38Duncan Sands // If this is an unaligned store and the target doesn't support it, 15377e857201f387d004571e6058e2ea709163500f38Duncan Sands // expand it. 1538bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) { 1539db125cfaf57cc83e7dd7453de2d509bc8efd0e5eChris Lattner Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext()); 15406e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach unsigned ABIAlignment= TLI.getTargetData()->getABITypeAlignment(Ty); 15417e857201f387d004571e6058e2ea709163500f38Duncan Sands if (ST->getAlignment() < ABIAlignment) 15426f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), 15436f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman DAG, TLI); 15447e857201f387d004571e6058e2ea709163500f38Duncan Sands } 15457e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 15467e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Custom: 15476f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = TLI.LowerOperation(Result, DAG); 15487e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 1549e63e5ab50ab37fd59cc6e815fffcb90e75537ca3Dan Gohman case TargetLowering::Expand: 1550e9b58d0aac4e89b53a4be0e6f289b66649e1512bNadav Rotem assert(!StVT.isVector() && 1551e9b58d0aac4e89b53a4be0e6f289b66649e1512bNadav Rotem "Vector Stores are handled in LegalizeVectorOps"); 1552c2492c28ef04dbc77c5d47ec81ffc64c5407771fNadav Rotem 15537e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i16 i32 -> STORE i16 155475b10047fc57c30c86bb7c9ea0ee923ff3c33a7eDan Gohman assert(TLI.isTypeLegal(StVT) && "Do not know how to expand this store!"); 1555ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getNode(ISD::TRUNCATE, dl, StVT, Tmp3); 15566f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 15576f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman isVolatile, isNonTemporal, Alignment); 15587e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 1559f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 15608b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 15613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 15623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 1563f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 156445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 15656f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman assert(Result.getValueType() == Op.getValueType() && 15666f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman "Bad legalization!"); 15676f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 15686f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Make sure that the generated code is itself legal. 15696f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (Result != Op) 15706f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Result = LegalizeOp(Result); 15716f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 15726f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Note that LegalizeOp may be reentered even from single-use nodes, which 15736f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // means that we always must cache transformed nodes. 15746f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman AddLegalizedOperand(Op, Result); 15756f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman return Result; 15763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 15773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 15783d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli FriedmanSDValue SelectionDAGLegalize::ExpandExtractFromVectorThroughStack(SDValue Op) { 15793d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Vec = Op.getOperand(0); 15803d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Idx = Op.getOperand(1); 15813d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DebugLoc dl = Op.getDebugLoc(); 15823d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Store the value to a temporary stack slot, then LOAD the returned part. 15833d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue StackPtr = DAG.CreateStackTemporary(Vec.getValueType()); 15846229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Vec, StackPtr, 15856229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner MachinePointerInfo(), false, false, 0); 15863d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15873d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Add the offset to the index. 1588aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned EltSize = 1589aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman Vec.getValueType().getVectorElementType().getSizeInBits()/8; 15903d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::MUL, dl, Idx.getValueType(), Idx, 15913d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DAG.getConstant(EltSize, Idx.getValueType())); 15923d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15933d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman if (Idx.getValueType().bitsGT(TLI.getPointerTy())) 15943d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::TRUNCATE, dl, TLI.getPointerTy(), Idx); 15953d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman else 15963d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::ZERO_EXTEND, dl, TLI.getPointerTy(), Idx); 15973d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15983d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman StackPtr = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, StackPtr); 15993d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 1600c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman if (Op.getValueType().isVector()) 1601ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner return DAG.getLoad(Op.getValueType(), dl, Ch, StackPtr,MachinePointerInfo(), 16021e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 1603a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings return DAG.getExtLoad(ISD::EXTLOAD, dl, Op.getValueType(), Ch, StackPtr, 16043d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MachinePointerInfo(), 16053d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Vec.getValueType().getVectorElementType(), 16063d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner false, false, 0); 16073d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman} 16083d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 1609cfe33c46aa50f04adb0431243e7d25f79b719ac6David GreeneSDValue SelectionDAGLegalize::ExpandInsertToVectorThroughStack(SDValue Op) { 1610cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene assert(Op.getValueType().isVector() && "Non-vector insert subvector!"); 1611cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1612cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene SDValue Vec = Op.getOperand(0); 1613cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene SDValue Part = Op.getOperand(1); 1614cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene SDValue Idx = Op.getOperand(2); 1615cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene DebugLoc dl = Op.getDebugLoc(); 1616cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1617cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene // Store the value to a temporary stack slot, then LOAD the returned part. 1618cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1619cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene SDValue StackPtr = DAG.CreateStackTemporary(Vec.getValueType()); 1620cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene int FI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex(); 1621cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene MachinePointerInfo PtrInfo = MachinePointerInfo::getFixedStack(FI); 1622cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1623cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene // First store the whole vector. 1624cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Vec, StackPtr, PtrInfo, 1625cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene false, false, 0); 1626cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1627cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene // Then store the inserted part. 1628cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1629cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene // Add the offset to the index. 1630cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene unsigned EltSize = 1631cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene Vec.getValueType().getVectorElementType().getSizeInBits()/8; 1632cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1633cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene Idx = DAG.getNode(ISD::MUL, dl, Idx.getValueType(), Idx, 1634cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene DAG.getConstant(EltSize, Idx.getValueType())); 1635cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1636cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene if (Idx.getValueType().bitsGT(TLI.getPointerTy())) 1637cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene Idx = DAG.getNode(ISD::TRUNCATE, dl, TLI.getPointerTy(), Idx); 1638cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene else 1639cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene Idx = DAG.getNode(ISD::ZERO_EXTEND, dl, TLI.getPointerTy(), Idx); 1640cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1641cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene SDValue SubStackPtr = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, 1642cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene StackPtr); 1643cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1644cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene // Store the subvector. 1645cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene Ch = DAG.getStore(DAG.getEntryNode(), dl, Part, SubStackPtr, 1646cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene MachinePointerInfo(), false, false, 0); 1647cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1648cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene // Finally, load the updated vector. 1649cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene return DAG.getLoad(Op.getValueType(), dl, Ch, StackPtr, PtrInfo, 1650cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene false, false, 0); 1651cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene} 1652cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 16537ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::ExpandVectorBuildThroughStack(SDNode* Node) { 16547ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We can't handle this case efficiently. Allocate a sufficiently 16557ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // aligned object on the stack, store each element into it, then load 16567ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // the result as a vector. 16577ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Create the stack frame object. 1658e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 16595b8bce11d60694a651965cf019b9cb5d84ed3b90Dale Johannesen EVT EltVT = VT.getVectorElementType(); 16607ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = Node->getDebugLoc(); 16617ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue FIPtr = DAG.CreateStackTemporary(VT); 1662ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int FI = cast<FrameIndexSDNode>(FIPtr.getNode())->getIndex(); 1663ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo PtrInfo = MachinePointerInfo::getFixedStack(FI); 16647ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16657ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Emit a store of each element to the stack slot. 16667ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SmallVector<SDValue, 8> Stores; 1667aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned TypeByteSize = EltVT.getSizeInBits() / 8; 16687ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Store (in the right endianness) the elements to memory. 16697ef3d178660b82d1571757e49f44b004d772a116Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 16707ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Ignore undef elements. 16717ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (Node->getOperand(i).getOpcode() == ISD::UNDEF) continue; 16727ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16737ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Offset = TypeByteSize*i; 16747ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16757ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Idx = DAG.getConstant(Offset, FIPtr.getValueType()); 16767ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Idx = DAG.getNode(ISD::ADD, dl, FIPtr.getValueType(), FIPtr, Idx); 16777ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16789949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman // If the destination vector element type is narrower than the source 16799949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman // element type, only store the bits necessary. 16809949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman if (EltVT.bitsLT(Node->getOperand(i).getValueType().getScalarType())) { 16815b8bce11d60694a651965cf019b9cb5d84ed3b90Dale Johannesen Stores.push_back(DAG.getTruncStore(DAG.getEntryNode(), dl, 1682ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Node->getOperand(i), Idx, 1683ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner PtrInfo.getWithOffset(Offset), 16841e559443a17d1b335f697551c6263ba60d5dd827David Greene EltVT, false, false, 0)); 1685eb38ebf15c326a5bb45ca9da6329cdf19ad6df95Mon P Wang } else 16866e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach Stores.push_back(DAG.getStore(DAG.getEntryNode(), dl, 1687ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Node->getOperand(i), Idx, 1688ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner PtrInfo.getWithOffset(Offset), 16891e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0)); 16907ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 16917ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16927ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue StoreChain; 16937ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (!Stores.empty()) // Not all undef elements? 1694825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson StoreChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 16957ef3d178660b82d1571757e49f44b004d772a116Eli Friedman &Stores[0], Stores.size()); 16967ef3d178660b82d1571757e49f44b004d772a116Eli Friedman else 16977ef3d178660b82d1571757e49f44b004d772a116Eli Friedman StoreChain = DAG.getEntryNode(); 16987ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16997ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Result is a load from the stack slot. 1700ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner return DAG.getLoad(VT, dl, StoreChain, FIPtr, PtrInfo, false, false, 0); 17017ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 17027ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 17034bc8c718218159fe410462f6e3670e7cb76c0c04Eli FriedmanSDValue SelectionDAGLegalize::ExpandFCOPYSIGN(SDNode* Node) { 17044bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 17054bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = Node->getOperand(0); 17064bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = Node->getOperand(1); 17075d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands 17085d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Get the sign bit of the RHS. First obtain a value that has the same 17095d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // sign as the sign bit, i.e. negative if and only if the sign bit is 1. 17104bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignBit; 17115d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands EVT FloatVT = Tmp2.getValueType(); 17125d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands EVT IVT = EVT::getIntegerVT(*DAG.getContext(), FloatVT.getSizeInBits()); 171375b10047fc57c30c86bb7c9ea0ee923ff3c33a7eDan Gohman if (TLI.isTypeLegal(IVT)) { 17145d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Convert to an integer with the same sign bit. 1715bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SignBit = DAG.getNode(ISD::BITCAST, dl, IVT, Tmp2); 17164bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else { 17175d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Store the float to memory, then load the sign part out as an integer. 17185d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands MVT LoadTy = TLI.getPointerTy(); 17195d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // First create a temporary that is aligned for both the load and store. 17205d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SDValue StackPtr = DAG.CreateStackTemporary(FloatVT, LoadTy); 17215d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Then store the float to it. 17224bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Ch = 17236229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner DAG.getStore(DAG.getEntryNode(), dl, Tmp2, StackPtr, MachinePointerInfo(), 17241e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 17255d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands if (TLI.isBigEndian()) { 17265d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands assert(FloatVT.isByteSized() && "Unsupported floating point type!"); 17275d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Load out a legal integer with the same sign bit as the float. 1728ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SignBit = DAG.getLoad(LoadTy, dl, Ch, StackPtr, MachinePointerInfo(), 1729ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, 0); 17305d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands } else { // Little endian 17315d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SDValue LoadPtr = StackPtr; 17325d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // The float may be wider than the integer we are going to load. Advance 17335d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // the pointer so that the loaded integer will contain the sign bit. 17345d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands unsigned Strides = (FloatVT.getSizeInBits()-1)/LoadTy.getSizeInBits(); 17355d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands unsigned ByteOffset = (Strides * LoadTy.getSizeInBits()) / 8; 17365d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands LoadPtr = DAG.getNode(ISD::ADD, dl, LoadPtr.getValueType(), 17375d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands LoadPtr, DAG.getIntPtrConstant(ByteOffset)); 17385d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Load a legal integer containing the sign bit. 1739ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SignBit = DAG.getLoad(LoadTy, dl, Ch, LoadPtr, MachinePointerInfo(), 1740ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, 0); 17415d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Move the sign bit to the top bit of the loaded integer. 17425d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands unsigned BitShift = LoadTy.getSizeInBits() - 17435d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands (FloatVT.getSizeInBits() - 8 * ByteOffset); 17445d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands assert(BitShift < LoadTy.getSizeInBits() && "Pointer advanced wrong?"); 17455d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands if (BitShift) 17465d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SignBit = DAG.getNode(ISD::SHL, dl, LoadTy, SignBit, 174795771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson DAG.getConstant(BitShift, 174895771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(SignBit.getValueType()))); 17495d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands } 17504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 17515d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Now get the sign bit proper, by seeing whether the value is negative. 17525d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SignBit = DAG.getSetCC(dl, TLI.getSetCCResultType(SignBit.getValueType()), 17535d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SignBit, DAG.getConstant(0, SignBit.getValueType()), 17545d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands ISD::SETLT); 17554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Get the absolute value of the result. 17564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue AbsVal = DAG.getNode(ISD::FABS, dl, Tmp1.getValueType(), Tmp1); 17574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Select between the nabs and abs value based on the sign bit of 17584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // the input. 17594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getNode(ISD::SELECT, dl, AbsVal.getValueType(), SignBit, 17604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getNode(ISD::FNEG, dl, AbsVal.getValueType(), AbsVal), 17614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman AbsVal); 17624bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 17634bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 17644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedmanvoid SelectionDAGLegalize::ExpandDYNAMIC_STACKALLOC(SDNode* Node, 17654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results) { 17664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned SPReg = TLI.getStackPointerRegisterToSaveRestore(); 17674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert(SPReg && "Target cannot require DYNAMIC_STACKALLOC expansion and" 17684bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman " not tell us which reg is the stack pointer!"); 17694bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 1770e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 17714bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = SDValue(Node, 0); 17724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = SDValue(Node, 1); 17734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp3 = Node->getOperand(2); 17744bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Tmp1.getOperand(0); 17754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 17764bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Chain the dynamic stack allocation so that it doesn't modify the stack 17774bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // pointer when other instructions are using the stack. 17784bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(0, true)); 17794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 17804bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Size = Tmp2.getOperand(1); 17814bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SP = DAG.getCopyFromReg(Chain, dl, SPReg, VT); 17824bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = SP.getValue(1); 17834bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Align = cast<ConstantSDNode>(Tmp3)->getZExtValue(); 178416c29b5f285f375be53dabaa73e3e91107485fe4Anton Korobeynikov unsigned StackAlign = TM.getFrameLowering()->getStackAlignment(); 17854bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Align > StackAlign) 17864bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SP = DAG.getNode(ISD::AND, dl, VT, SP, 17874bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getConstant(-(uint64_t)Align, VT)); 17884bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, SP, Size); // Value 17894bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCopyToReg(Chain, dl, SPReg, Tmp1); // Output chain 17904bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 17914bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp2 = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(0, true), 17924bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getIntPtrConstant(0, true), SDValue()); 17934bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 17944bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 17954bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp2); 17964bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 17974bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 17987f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// LegalizeSetCCCondCode - Legalize a SETCC with given LHS and RHS and 1799f77fc92b03efe455008474894d217282e2a03cadDan Gohman/// condition code CC on the current target. This routine expands SETCC with 18007f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// illegal condition code into AND / OR of multiple SETCC values. 1801e50ed30282bb5b4a9ed952580523f2dda16215acOwen Andersonvoid SelectionDAGLegalize::LegalizeSetCCCondCode(EVT VT, 18027f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng SDValue &LHS, SDValue &RHS, 1803bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue &CC, 1804775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DebugLoc dl) { 1805e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = LHS.getValueType(); 18067f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CCCode = cast<CondCodeSDNode>(CC)->get(); 18077f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (TLI.getCondCodeAction(CCCode, OpVT)) { 180835a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unknown condition code action!"); 18097f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Legal: 18107f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // Nothing to do. 18117f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 18127f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Expand: { 18137f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CC1 = ISD::SETCC_INVALID, CC2 = ISD::SETCC_INVALID; 18147f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng unsigned Opc = 0; 18157f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (CCCode) { 181635a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Don't know how to expand this condition!"); 1817e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETO; Opc = ISD::AND; break; 1818e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGT: CC1 = ISD::SETGT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1819e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGE: CC1 = ISD::SETGE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1820e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLT: CC1 = ISD::SETLT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1821e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLE: CC1 = ISD::SETLE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1822e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETONE: CC1 = ISD::SETNE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1823e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1824e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGT: CC1 = ISD::SETGT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1825e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGE: CC1 = ISD::SETGE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1826e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULT: CC1 = ISD::SETLT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1827e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULE: CC1 = ISD::SETLE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1828e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUNE: CC1 = ISD::SETNE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 18297f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // FIXME: Implement more expansions. 18307f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 18317f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 1832bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC1 = DAG.getSetCC(dl, VT, LHS, RHS, CC1); 1833bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC2 = DAG.getSetCC(dl, VT, LHS, RHS, CC2); 1834bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen LHS = DAG.getNode(Opc, dl, VT, SetCC1, SetCC2); 18357f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng RHS = SDValue(); 18367f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng CC = SDValue(); 18377f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 18387f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 18397f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 18407f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng} 18417f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 18421401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// EmitStackConvert - Emit a store/load combination to the stack. This stores 18431401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// SrcOp to a stack slot of type SlotVT, truncating it if needed. It then does 18441401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// a load from the stack slot to DestVT, extending it if needed. 18451401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// The resultant code need not be legal. 1846475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::EmitStackConvert(SDValue SrcOp, 1847e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SlotVT, 1848e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 18498a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 185035481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Create the stack frame object. 1851ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson unsigned SrcAlign = 1852ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getTargetData()->getPrefTypeAlignment(SrcOp.getValueType(). 185323b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson getTypeForEVT(*DAG.getContext())); 1854475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FIPtr = DAG.CreateStackTemporary(SlotVT, SrcAlign); 1855fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1856ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(FIPtr); 1857ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = StackPtrFI->getIndex(); 1858da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner MachinePointerInfo PtrInfo = MachinePointerInfo::getFixedStack(SPFI); 1859ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 186083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SrcSize = SrcOp.getValueType().getSizeInBits(); 186183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SlotSize = SlotVT.getSizeInBits(); 186283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned DestSize = DestVT.getSizeInBits(); 1863db125cfaf57cc83e7dd7453de2d509bc8efd0e5eChris Lattner Type *DestType = DestVT.getTypeForEVT(*DAG.getContext()); 1864adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng unsigned DestAlign = TLI.getTargetData()->getPrefTypeAlignment(DestType); 1865fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18661401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // Emit a store to the stack slot. Use a truncstore if the input value is 18671401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // later than DestVT. 1868475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store; 1869ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 18701401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SrcSize > SlotSize) 18718a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getTruncStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 1872da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner PtrInfo, SlotVT, false, false, SrcAlign); 18731401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner else { 18741401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SrcSize == SlotSize && "Invalid store"); 18758a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 1876da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner PtrInfo, false, false, SrcAlign); 18771401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner } 1878fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 187935481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Result is a load from the stack slot. 18801401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SlotSize == DestSize) 1881da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner return DAG.getLoad(DestVT, dl, Store, FIPtr, PtrInfo, 1882ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, DestAlign); 1883fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18841401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SlotSize < DestSize && "Unknown extension!"); 1885a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings return DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, Store, FIPtr, 1886da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner PtrInfo, SlotVT, false, false, DestAlign); 188735481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner} 188835481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner 1889475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandSCALAR_TO_VECTOR(SDNode *Node) { 18908a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl = Node->getDebugLoc(); 18914352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // Create a vector sized/aligned stack slot, store the value to element #0, 18924352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // then load the whole vector back out. 1893475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(Node->getValueType(0)); 189469de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 1895ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(StackPtr); 1896ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = StackPtrFI->getIndex(); 1897ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 1898b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands SDValue Ch = DAG.getTruncStore(DAG.getEntryNode(), dl, Node->getOperand(0), 1899b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands StackPtr, 190085ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getFixedStack(SPFI), 19011e559443a17d1b335f697551c6263ba60d5dd827David Greene Node->getValueType(0).getVectorElementType(), 19021e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 19038a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(Node->getValueType(0), dl, Ch, StackPtr, 190485ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getFixedStack(SPFI), 19051e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 19064352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 19074352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 19084352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 1909ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner/// ExpandBUILD_VECTOR - Expand a BUILD_VECTOR node on targets that don't 191007a96765daedf180a7102d39fe56c499878312b7Dan Gohman/// support the operation, but do support the resultant vector type. 1911475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandBUILD_VECTOR(SDNode *Node) { 191226cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson unsigned NumElems = Node->getNumOperands(); 19137a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Value1, Value2; 191426cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson DebugLoc dl = Node->getDebugLoc(); 1915e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1916e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(0).getValueType(); 1917e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 1918fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1919fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // If the only non-undef value is the low element, turn this into a 192087100e0b83b808757bf44dabecd1d1048255d1adChris Lattner // SCALAR_TO_VECTOR node. If this is { X, X, X, X }, determine X. 1921ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner bool isOnlyLowElement = true; 19227a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman bool MoreThanTwoValues = false; 19232eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner bool isConstant = true; 19247a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 1925475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue V = Node->getOperand(i); 19267a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 19277a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 19287a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (i > 0) 1929ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner isOnlyLowElement = false; 19307a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!isa<ConstantFPSDNode>(V) && !isa<ConstantSDNode>(V)) 19312eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner isConstant = false; 19327a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 19337a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) { 19347a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value1 = V; 19357a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (!Value2.getNode()) { 19367a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V != Value1) 19377a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value2 = V; 19387a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (V != Value1 && V != Value2) { 19397a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman MoreThanTwoValues = true; 19407a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 1941ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1942fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 19437a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) 19447a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getUNDEF(VT); 19457a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 19467a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (isOnlyLowElement) 194726cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson return DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Node->getOperand(0)); 1948fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 19492eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // If all elements are constants, create a load from the constant pool. 1950ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner if (isConstant) { 1951ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner std::vector<Constant*> CV; 1952033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng for (unsigned i = 0, e = NumElems; i != e; ++i) { 1953fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel if (ConstantFPSDNode *V = 1954ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner dyn_cast<ConstantFPSDNode>(Node->getOperand(i))) { 19554fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman CV.push_back(const_cast<ConstantFP *>(V->getConstantFPValue())); 1956fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel } else if (ConstantSDNode *V = 1957ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson dyn_cast<ConstantSDNode>(Node->getOperand(i))) { 19589a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen if (OpVT==EltVT) 19599a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CV.push_back(const_cast<ConstantInt *>(V->getConstantIntValue())); 19609a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen else { 19619a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // If OpVT and EltVT don't match, EltVT is not legal and the 19629a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // element values have been promoted/truncated earlier. Undo this; 19639a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // we don't want a v16i8 to become a v16i32 for example. 19649a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen const ConstantInt *CI = V->getConstantIntValue(); 19659a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CV.push_back(ConstantInt::get(EltVT.getTypeForEVT(*DAG.getContext()), 19669a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CI->getZExtValue())); 19679a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen } 1968ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } else { 1969ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner assert(Node->getOperand(i).getOpcode() == ISD::UNDEF); 1970db125cfaf57cc83e7dd7453de2d509bc8efd0e5eChris Lattner Type *OpNTy = EltVT.getTypeForEVT(*DAG.getContext()); 19719e9a0d5fc26878e51a58a8b57900fcbf952c2691Owen Anderson CV.push_back(UndefValue::get(OpNTy)); 1972ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1973ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1974af7ec975870f92245f1f1484ac80a1e2db6a0afaOwen Anderson Constant *CP = ConstantVector::get(CV); 1975475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(CP, TLI.getPointerTy()); 19761606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 19778a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(VT, dl, DAG.getEntryNode(), CPIdx, 197885ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getConstantPool(), 19791e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, Alignment); 1980ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1981fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 19827a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!MoreThanTwoValues) { 19837a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SmallVector<int, 8> ShuffleVec(NumElems, -1); 19847a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 19857a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue V = Node->getOperand(i); 19867a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 19877a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 19887a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman ShuffleVec[i] = V == Value1 ? 0 : NumElems; 19897a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 19907a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (TLI.isShuffleMaskLegal(ShuffleVec, Node->getValueType(0))) { 19912eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Get the splatted value into the low element of a vector register. 19927a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec1 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value1); 19937a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec2; 19947a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (Value2.getNode()) 19957a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value2); 19967a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman else 19977a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getUNDEF(VT); 1998fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 19992eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Return shuffle(LowValVec, undef, <0,0,0,0>) 20007a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getVectorShuffle(VT, dl, Vec1, Vec2, ShuffleVec.data()); 2001033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 2002033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 2003fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 20047ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, we can't handle this case efficiently. 20057ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return ExpandVectorBuildThroughStack(Node); 2006ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner} 2007ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner 200877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// ExpandLibCall - Expand a node into a call to a libcall. If the result value 200977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// does not fit into a register, return the lo part and set the hi part to the 201077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// by-reg argument. If it does fit into a single register, return the result 201177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// and leave the Hi part unset. 2012475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, 201347b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman bool isSigned) { 20146f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman assert(!IsLegalizingCall && "Cannot overlap legalization of calls!"); 2015fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // The input chain to this libcall is the entry node of the function. 20166831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalizing the call will automatically add the previous call to the 20176831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // dependence. 2018475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InChain = DAG.getEntryNode(); 2019fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 202077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 202147857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer TargetLowering::ArgListEntry Entry; 202277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 2023e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ArgVT = Node->getOperand(i).getValueType(); 2024db125cfaf57cc83e7dd7453de2d509bc8efd0e5eChris Lattner Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext()); 2025fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Entry.Node = Node->getOperand(i); Entry.Ty = ArgTy; 2026d0b82b301d700217a716526f9329bb031e0d6578Anton Korobeynikov Entry.isSExt = isSigned; 202700fee65fd21f9615d1a604b8b7d42cd16a3f6b47Duncan Sands Entry.isZExt = !isSigned; 202847857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer Args.push_back(Entry); 202977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 2030056292fd738924f3f7703725d8f630983794b5a5Bill Wendling SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 20310c39719bfc7d0b3e61fbd55e1115184a1d5f6ae7Mon P Wang TLI.getPointerTy()); 2032edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 20336f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Splice the libcall in wherever FindInputOutputChains tells us to. 2034db125cfaf57cc83e7dd7453de2d509bc8efd0e5eChris Lattner Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext()); 20353d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng 20363d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng // isTailCall may be true since the callee does not reference caller stack 20373d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng // frame. Check if it's in the right position. 20383d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng bool isTailCall = isInTailCallPosition(DAG, Node, TLI); 2039ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson std::pair<SDValue, SDValue> CallInfo = 204086098bd6a63d2cdf0c9be9ef3151bd2728281fd7Dale Johannesen TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false, 20413d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng 0, TLI.getLibcallCallingConv(LC), isTailCall, 204298ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 204346ada19645c981a0b7932487d163f7582074a4d9Bill Wendling Callee, Args, DAG, Node->getDebugLoc()); 20440d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 20453d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng if (!CallInfo.second.getNode()) 20463d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng // It's a tailcall, return the chain (which is the DAG root). 20473d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng return DAG.getRoot(); 20483d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng 20496f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Legalize the call sequence, starting with the chain. This will advance 20506f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // the LastCALLSEQ_END to the legalized version of the CALLSEQ_END node that 20516f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // was added by LowerCallTo (guaranteeing proper serialization of calls). 20526f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LegalizeOp(CallInfo.second); 205374807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman return CallInfo.first; 205422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 205522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2056f316eb70743e88227b8919370fe38587ffe93512Dan Gohman/// ExpandLibCall - Generate a libcall taking the given operands as arguments 2057abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher/// and returning a result of type RetVT. 2058abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric ChristopherSDValue SelectionDAGLegalize::ExpandLibCall(RTLIB::Libcall LC, EVT RetVT, 2059abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher const SDValue *Ops, unsigned NumOps, 2060abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher bool isSigned, DebugLoc dl) { 2061abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher TargetLowering::ArgListTy Args; 2062abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher Args.reserve(NumOps); 2063f316eb70743e88227b8919370fe38587ffe93512Dan Gohman 2064abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher TargetLowering::ArgListEntry Entry; 2065abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher for (unsigned i = 0; i != NumOps; ++i) { 2066abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher Entry.Node = Ops[i]; 2067abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher Entry.Ty = Entry.Node.getValueType().getTypeForEVT(*DAG.getContext()); 2068abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher Entry.isSExt = isSigned; 2069abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher Entry.isZExt = !isSigned; 2070abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher Args.push_back(Entry); 2071abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher } 2072abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 2073abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher TLI.getPointerTy()); 2074f316eb70743e88227b8919370fe38587ffe93512Dan Gohman 2075db125cfaf57cc83e7dd7453de2d509bc8efd0e5eChris Lattner Type *RetTy = RetVT.getTypeForEVT(*DAG.getContext()); 2076abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher std::pair<SDValue,SDValue> CallInfo = 2077abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher TLI.LowerCallTo(DAG.getEntryNode(), RetTy, isSigned, !isSigned, false, 2078abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher false, 0, TLI.getLibcallCallingConv(LC), false, 2079abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher /*isReturnValueUsed=*/true, 2080abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher Callee, Args, DAG, dl); 2081f316eb70743e88227b8919370fe38587ffe93512Dan Gohman 20826f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Legalize the call sequence, starting with the chain. This will advance 20836f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // the LastCALLSEQ_END to the legalized version of the CALLSEQ_END node that 20846f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // was added by LowerCallTo (guaranteeing proper serialization of calls). 20856f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LegalizeOp(CallInfo.second); 20866f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 2087abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher return CallInfo.first; 2088abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher} 2089abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher 2090e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach// ExpandChainLibCall - Expand a node into a call to a libcall. Similar to 2091e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach// ExpandLibCall except that the first operand is the in-chain. 2092e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbachstd::pair<SDValue, SDValue> 2093e03262fcfc09356a0e3ec589041bc2e0248944e9Jim GrosbachSelectionDAGLegalize::ExpandChainLibCall(RTLIB::Libcall LC, 2094e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach SDNode *Node, 2095e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach bool isSigned) { 20966f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman assert(!IsLegalizingCall && "Cannot overlap legalization of calls!"); 2097e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach SDValue InChain = Node->getOperand(0); 2098e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2099e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach TargetLowering::ArgListTy Args; 2100e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach TargetLowering::ArgListEntry Entry; 2101e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach for (unsigned i = 1, e = Node->getNumOperands(); i != e; ++i) { 2102e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach EVT ArgVT = Node->getOperand(i).getValueType(); 2103db125cfaf57cc83e7dd7453de2d509bc8efd0e5eChris Lattner Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext()); 2104e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Entry.Node = Node->getOperand(i); 2105e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Entry.Ty = ArgTy; 2106e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Entry.isSExt = isSigned; 2107e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Entry.isZExt = !isSigned; 2108e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Args.push_back(Entry); 2109e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2110e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 2111e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach TLI.getPointerTy()); 2112e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 21136f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Splice the libcall in wherever FindInputOutputChains tells us to. 2114db125cfaf57cc83e7dd7453de2d509bc8efd0e5eChris Lattner Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext()); 2115e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach std::pair<SDValue, SDValue> CallInfo = 2116e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false, 21173d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng 0, TLI.getLibcallCallingConv(LC), /*isTailCall=*/false, 2118e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach /*isReturnValueUsed=*/true, 2119e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Callee, Args, DAG, Node->getDebugLoc()); 2120e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 21216f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Legalize the call sequence, starting with the chain. This will advance 21226f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // the LastCALLSEQ_END to the legalized version of the CALLSEQ_END node that 21236f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // was added by LowerCallTo (guaranteeing proper serialization of calls). 21246f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LegalizeOp(CallInfo.second); 2125e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach return CallInfo; 2126e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach} 2127e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2128f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandFPLibCall(SDNode* Node, 2129f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F32, 2130f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, 2131f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F80, 2132f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128) { 2133f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 2134825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 213535a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unexpected request for libcall!"); 2136825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f32: LC = Call_F32; break; 2137825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f64: LC = Call_F64; break; 2138825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f80: LC = Call_F80; break; 2139825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::ppcf128: LC = Call_PPCF128; break; 2140f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 2141f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, false); 2142f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 2143f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 2144f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandIntLibCall(SDNode* Node, bool isSigned, 21458983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I8, 2146f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I16, 2147f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I32, 2148f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I64, 2149f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128) { 2150f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 2151825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 215235a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unexpected request for libcall!"); 21538983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i8: LC = Call_I8; break; 21548983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i16: LC = Call_I16; break; 21558983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i32: LC = Call_I32; break; 21568983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i64: LC = Call_I64; break; 2157825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i128: LC = Call_I128; break; 2158f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 2159f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, isSigned); 2160f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 2161f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 216265279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng/// isDivRemLibcallAvailable - Return true if divmod libcall is available. 216365279cb9bd985721ac6ad090fed02298396ba06dEvan Chengstatic bool isDivRemLibcallAvailable(SDNode *Node, bool isSigned, 216465279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng const TargetLowering &TLI) { 21658e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng RTLIB::Libcall LC; 21668e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 21678e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng default: assert(0 && "Unexpected request for libcall!"); 21688e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng case MVT::i8: LC= isSigned ? RTLIB::SDIVREM_I8 : RTLIB::UDIVREM_I8; break; 21698e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng case MVT::i16: LC= isSigned ? RTLIB::SDIVREM_I16 : RTLIB::UDIVREM_I16; break; 21708e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng case MVT::i32: LC= isSigned ? RTLIB::SDIVREM_I32 : RTLIB::UDIVREM_I32; break; 21718e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng case MVT::i64: LC= isSigned ? RTLIB::SDIVREM_I64 : RTLIB::UDIVREM_I64; break; 21728e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng case MVT::i128: LC= isSigned ? RTLIB::SDIVREM_I128:RTLIB::UDIVREM_I128; break; 21738e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng } 21748e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 217565279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng return TLI.getLibcallName(LC) != 0; 217665279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng} 21778e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 217865279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng/// UseDivRem - Only issue divrem libcall if both quotient and remainder are 217965279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng/// needed. 218065279cb9bd985721ac6ad090fed02298396ba06dEvan Chengstatic bool UseDivRem(SDNode *Node, bool isSigned, bool isDIV) { 21818e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng unsigned OtherOpcode = 0; 218265279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng if (isSigned) 21838e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng OtherOpcode = isDIV ? ISD::SREM : ISD::SDIV; 218465279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng else 21858e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng OtherOpcode = isDIV ? ISD::UREM : ISD::UDIV; 218665279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng 21878e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng SDValue Op0 = Node->getOperand(0); 21888e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng SDValue Op1 = Node->getOperand(1); 21898e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng for (SDNode::use_iterator UI = Op0.getNode()->use_begin(), 21908e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng UE = Op0.getNode()->use_end(); UI != UE; ++UI) { 21918e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng SDNode *User = *UI; 21928e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng if (User == Node) 21938e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng continue; 21948e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng if (User->getOpcode() == OtherOpcode && 21958e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng User->getOperand(0) == Op0 && 219665279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng User->getOperand(1) == Op1) 219765279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng return true; 21988e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng } 219965279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng return false; 220065279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng} 220165279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng 220265279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng/// ExpandDivRemLibCall - Issue libcalls to __{u}divmod to compute div / rem 220365279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng/// pairs. 220465279cb9bd985721ac6ad090fed02298396ba06dEvan Chengvoid 220565279cb9bd985721ac6ad090fed02298396ba06dEvan ChengSelectionDAGLegalize::ExpandDivRemLibCall(SDNode *Node, 220665279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng SmallVectorImpl<SDValue> &Results) { 220765279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng unsigned Opcode = Node->getOpcode(); 220865279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng bool isSigned = Opcode == ISD::SDIVREM; 220965279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng 221065279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::Libcall LC; 221165279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 221265279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng default: assert(0 && "Unexpected request for libcall!"); 221365279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng case MVT::i8: LC= isSigned ? RTLIB::SDIVREM_I8 : RTLIB::UDIVREM_I8; break; 221465279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng case MVT::i16: LC= isSigned ? RTLIB::SDIVREM_I16 : RTLIB::UDIVREM_I16; break; 221565279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng case MVT::i32: LC= isSigned ? RTLIB::SDIVREM_I32 : RTLIB::UDIVREM_I32; break; 221665279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng case MVT::i64: LC= isSigned ? RTLIB::SDIVREM_I64 : RTLIB::UDIVREM_I64; break; 221765279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng case MVT::i128: LC= isSigned ? RTLIB::SDIVREM_I128:RTLIB::UDIVREM_I128; break; 22188e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng } 22198e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 22208e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng // The input chain to this libcall is the entry node of the function. 22218e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng // Legalizing the call will automatically add the previous call to the 22228e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng // dependence. 22238e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng SDValue InChain = DAG.getEntryNode(); 22248e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 22258e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng EVT RetVT = Node->getValueType(0); 2226db125cfaf57cc83e7dd7453de2d509bc8efd0e5eChris Lattner Type *RetTy = RetVT.getTypeForEVT(*DAG.getContext()); 22278e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 22288e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng TargetLowering::ArgListTy Args; 22298e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng TargetLowering::ArgListEntry Entry; 22308e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 22318e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng EVT ArgVT = Node->getOperand(i).getValueType(); 2232db125cfaf57cc83e7dd7453de2d509bc8efd0e5eChris Lattner Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext()); 22338e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Entry.Node = Node->getOperand(i); Entry.Ty = ArgTy; 22348e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Entry.isSExt = isSigned; 22358e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Entry.isZExt = !isSigned; 22368e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Args.push_back(Entry); 22378e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng } 22388e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 22398e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng // Also pass the return address of the remainder. 22408e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng SDValue FIPtr = DAG.CreateStackTemporary(RetVT); 22418e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Entry.Node = FIPtr; 22428e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Entry.Ty = RetTy->getPointerTo(); 22438e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Entry.isSExt = isSigned; 22448e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Entry.isZExt = !isSigned; 22458e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Args.push_back(Entry); 22468e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 22478e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 22488e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng TLI.getPointerTy()); 22498e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 22506f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Splice the libcall in wherever FindInputOutputChains tells us to. 22518e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng DebugLoc dl = Node->getDebugLoc(); 22528e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng std::pair<SDValue, SDValue> CallInfo = 22538e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false, 22548e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 0, TLI.getLibcallCallingConv(LC), /*isTailCall=*/false, 22558e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng /*isReturnValueUsed=*/true, Callee, Args, DAG, dl); 22568e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 22576f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // Legalize the call sequence, starting with the chain. This will advance 22586f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // the LastCALLSEQ to the legalized version of the CALLSEQ_END node that 22596f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman // was added by LowerCallTo (guaranteeing proper serialization of calls). 22606f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LegalizeOp(CallInfo.second); 22616f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman 22628e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng // Remainder is loaded back from the stack frame. 22636f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SDValue Rem = DAG.getLoad(RetVT, dl, LastCALLSEQ_END, FIPtr, 22648e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng MachinePointerInfo(), false, false, 0); 226565279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng Results.push_back(CallInfo.first); 226665279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng Results.push_back(Rem); 22678e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng} 22688e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 226922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandLegalINT_TO_FP - This function is responsible for legalizing a 227022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// INT_TO_FP operation of the specified operand when the target requests that 227122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we expand it. At this point, we know that the result and operand types are 227222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target. 2273475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLegalINT_TO_FP(bool isSigned, 2274475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0, 2275e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2276af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 2277825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Op0.getValueType() == MVT::i32) { 227822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // simple 32-bit [signed|unsigned] integer to float/double expansion 2279fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 228023594d4537fb88a963c6d6993af5027eac9bfbacChris Lattner // Get the stack frame index of a 8 byte buffer. 2281825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue StackSlot = DAG.CreateStackTemporary(MVT::f64); 2282fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 228322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // word offset constant for Hi/Lo address computation 2284475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue WordOff = DAG.getConstant(sizeof(int), TLI.getPointerTy()); 228522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // set up Hi and Lo (into buffer) address based on endian 2286475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = StackSlot; 2287fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Lo = DAG.getNode(ISD::ADD, dl, 2288ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getPointerTy(), StackSlot, WordOff); 2289408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner if (TLI.isLittleEndian()) 2290408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner std::swap(Hi, Lo); 2291fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 229222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // if signed map to unsigned space 2293475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0Mapped; 229422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) { 229522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // constant used to invert sign bit (signed to unsigned mapping) 2296825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue SignBit = DAG.getConstant(0x80000000u, MVT::i32); 2297825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Op0Mapped = DAG.getNode(ISD::XOR, dl, MVT::i32, Op0, SignBit); 229822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } else { 229922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Op0Mapped = Op0; 230022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 230122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the lo of the constructed double - based on integer input 2302af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Store1 = DAG.getStore(DAG.getEntryNode(), dl, 23036229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner Op0Mapped, Lo, MachinePointerInfo(), 23041e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 230522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // initial hi portion of constructed double 2306825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue InitialHi = DAG.getConstant(0x43300000u, MVT::i32); 230722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the hi of the constructed double - biased exponent 23086229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner SDValue Store2 = DAG.getStore(Store1, dl, InitialHi, Hi, 23096229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner MachinePointerInfo(), 23106229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner false, false, 0); 231122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // load the constructed double 2312ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Load = DAG.getLoad(MVT::f64, dl, Store2, StackSlot, 2313ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(), false, false, 0); 231422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // FP constant to bias correct the final result 2315475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Bias = DAG.getConstantFP(isSigned ? 2316ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000080000000ULL) : 2317ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000000000000ULL), 2318825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::f64); 231922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // subtract the bias 2320825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Sub = DAG.getNode(ISD::FSUB, dl, MVT::f64, Load, Bias); 232122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // final result 2322475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result; 232322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // handle final rounding 2324825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (DestVT == MVT::f64) { 232522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // do nothing 232622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Result = Sub; 2327825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsLT(MVT::f64)) { 2328af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_ROUND, dl, DestVT, Sub, 23290bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(0)); 2330825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsGT(MVT::f64)) { 2331af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, DestVT, Sub); 233222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 233322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Result; 233422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 233522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner assert(!isSigned && "Legalize cannot Expand SINT_TO_FP for i64 yet"); 2336a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen // Code below here assumes !isSigned without checking again. 23370fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman 23380fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // Implementation of unsigned i64 to f64 following the algorithm in 23390fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // __floatundidf in compiler_rt. This implementation has the advantage 23400fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // of performing rounding correctly, both in the default rounding mode 23410fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // and in all alternate rounding modes. 23420fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // TODO: Generalize this for use with other types. 23430fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman if (Op0.getValueType() == MVT::i64 && DestVT == MVT::f64) { 23440fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue TwoP52 = 23450fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstant(UINT64_C(0x4330000000000000), MVT::i64); 23460fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue TwoP84PlusTwoP52 = 23470fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstantFP(BitsToDouble(UINT64_C(0x4530000000100000)), MVT::f64); 23480fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue TwoP84 = 23490fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstant(UINT64_C(0x4530000000000000), MVT::i64); 23500fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman 23510fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue Lo = DAG.getZeroExtendInReg(Op0, dl, MVT::i32); 23520fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue Hi = DAG.getNode(ISD::SRL, dl, MVT::i64, Op0, 23530fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstant(32, MVT::i64)); 23540fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue LoOr = DAG.getNode(ISD::OR, dl, MVT::i64, Lo, TwoP52); 23550fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue HiOr = DAG.getNode(ISD::OR, dl, MVT::i64, Hi, TwoP84); 2356bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue LoFlt = DAG.getNode(ISD::BITCAST, dl, MVT::f64, LoOr); 2357bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue HiFlt = DAG.getNode(ISD::BITCAST, dl, MVT::f64, HiOr); 23586e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach SDValue HiSub = DAG.getNode(ISD::FSUB, dl, MVT::f64, HiFlt, 23596e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach TwoP84PlusTwoP52); 23600fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman return DAG.getNode(ISD::FADD, dl, MVT::f64, LoFlt, HiSub); 23610fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman } 23620fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman 23633a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // Implementation of unsigned i64 to f32. 2364a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen // TODO: Generalize this for use with other types. 2365a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen if (Op0.getValueType() == MVT::i64 && DestVT == MVT::f32) { 23663a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // For unsigned conversions, convert them to signed conversions using the 23673a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // algorithm from the x86_64 __floatundidf in compiler_rt. 23683a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson if (!isSigned) { 23693a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue Fast = DAG.getNode(ISD::SINT_TO_FP, dl, MVT::f32, Op0); 2370bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 237195771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson SDValue ShiftConst = 237295771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson DAG.getConstant(1, TLI.getShiftAmountTy(Op0.getValueType())); 23733a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue Shr = DAG.getNode(ISD::SRL, dl, MVT::i64, Op0, ShiftConst); 23743a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue AndConst = DAG.getConstant(1, MVT::i64); 23753a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue And = DAG.getNode(ISD::AND, dl, MVT::i64, Op0, AndConst); 23763a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue Or = DAG.getNode(ISD::OR, dl, MVT::i64, And, Shr); 2377bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 23783a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue SignCvt = DAG.getNode(ISD::SINT_TO_FP, dl, MVT::f32, Or); 23793a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue Slow = DAG.getNode(ISD::FADD, dl, MVT::f32, SignCvt, SignCvt); 2380bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 23813a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // TODO: This really should be implemented using a branch rather than a 2382bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck // select. We happen to get lucky and machinesink does the right 2383bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck // thing most of the time. This would be a good candidate for a 23843a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson //pseudo-op, or, even better, for whole-function isel. 2385bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue SignBitTest = DAG.getSetCC(dl, TLI.getSetCCResultType(MVT::i64), 23863a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson Op0, DAG.getConstant(0, MVT::i64), ISD::SETLT); 23873a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson return DAG.getNode(ISD::SELECT, dl, MVT::f32, SignBitTest, Slow, Fast); 23883a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson } 2389bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 23903a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // Otherwise, implement the fully general conversion. 2391bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 23926e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach SDValue And = DAG.getNode(ISD::AND, dl, MVT::i64, Op0, 2393a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(UINT64_C(0xfffffffffffff800), MVT::i64)); 2394a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Or = DAG.getNode(ISD::OR, dl, MVT::i64, And, 2395a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(UINT64_C(0x800), MVT::i64)); 23966e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach SDValue And2 = DAG.getNode(ISD::AND, dl, MVT::i64, Op0, 2397a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(UINT64_C(0x7ff), MVT::i64)); 2398a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Ne = DAG.getSetCC(dl, TLI.getSetCCResultType(MVT::i64), 2399a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen And2, DAG.getConstant(UINT64_C(0), MVT::i64), ISD::SETNE); 2400a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Sel = DAG.getNode(ISD::SELECT, dl, MVT::i64, Ne, Or, Op0); 2401a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Ge = DAG.getSetCC(dl, TLI.getSetCCResultType(MVT::i64), 2402a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen Op0, DAG.getConstant(UINT64_C(0x0020000000000000), MVT::i64), 24033a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson ISD::SETUGE); 2404a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Sel2 = DAG.getNode(ISD::SELECT, dl, MVT::i64, Ge, Sel, Op0); 240595771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson EVT SHVT = TLI.getShiftAmountTy(Sel2.getValueType()); 2406bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 2407a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Sh = DAG.getNode(ISD::SRL, dl, MVT::i64, Sel2, 2408a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(32, SHVT)); 2409a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Trunc = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Sh); 2410a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fcvt = DAG.getNode(ISD::UINT_TO_FP, dl, MVT::f64, Trunc); 2411a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue TwoP32 = 2412a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstantFP(BitsToDouble(UINT64_C(0x41f0000000000000)), MVT::f64); 2413a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fmul = DAG.getNode(ISD::FMUL, dl, MVT::f64, TwoP32, Fcvt); 2414a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Lo = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Sel2); 2415a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fcvt2 = DAG.getNode(ISD::UINT_TO_FP, dl, MVT::f64, Lo); 2416a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fadd = DAG.getNode(ISD::FADD, dl, MVT::f64, Fmul, Fcvt2); 2417a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen return DAG.getNode(ISD::FP_ROUND, dl, MVT::f32, Fadd, 2418a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getIntPtrConstant(0)); 2419a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen } 2420a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen 2421b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue Tmp1 = DAG.getNode(ISD::SINT_TO_FP, dl, DestVT, Op0); 2422b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman 2423b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue SignSet = DAG.getSetCC(dl, TLI.getSetCCResultType(Op0.getValueType()), 2424b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Op0, DAG.getConstant(0, Op0.getValueType()), 2425b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman ISD::SETLT); 2426b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue Zero = DAG.getIntPtrConstant(0), Four = DAG.getIntPtrConstant(4); 2427b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue CstOffset = DAG.getNode(ISD::SELECT, dl, Zero.getValueType(), 2428b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SignSet, Four, Zero); 2429b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman 2430b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman // If the sign bit of the integer is set, the large number will be treated 2431b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman // as a negative number. To counteract this, the dynamic code adds an 2432b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman // offset depending on the data type. 2433b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman uint64_t FF; 2434b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman switch (Op0.getValueType().getSimpleVT().SimpleTy) { 243535a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unsupported integer type!"); 2436b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i8 : FF = 0x43800000ULL; break; // 2^8 (as a float) 2437b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i16: FF = 0x47800000ULL; break; // 2^16 (as a float) 2438b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i32: FF = 0x4F800000ULL; break; // 2^32 (as a float) 2439b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i64: FF = 0x5F800000ULL; break; // 2^64 (as a float) 2440b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman } 2441b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman if (TLI.isLittleEndian()) FF <<= 32; 2442b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Constant *FudgeFactor = ConstantInt::get( 2443b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Type::getInt64Ty(*DAG.getContext()), FF); 2444b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman 2445b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue CPIdx = DAG.getConstantPool(FudgeFactor, TLI.getPointerTy()); 2446b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 2447b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman CPIdx = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), CPIdx, CstOffset); 2448b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Alignment = std::min(Alignment, 4u); 2449b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue FudgeInReg; 2450b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman if (DestVT == MVT::f32) 2451b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman FudgeInReg = DAG.getLoad(MVT::f32, dl, DAG.getEntryNode(), CPIdx, 245285ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getConstantPool(), 2453b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman false, false, Alignment); 2454b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman else { 24556f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman FudgeInReg = 24566f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LegalizeOp(DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, 24576f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman DAG.getEntryNode(), CPIdx, 24586f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman MachinePointerInfo::getConstantPool(), 24596f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman MVT::f32, false, false, Alignment)); 2460b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman } 246122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2462b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman return DAG.getNode(ISD::FADD, dl, DestVT, Tmp1, FudgeInReg); 246322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 246422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 246522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalINT_TO_FP - This function is responsible for legalizing a 246622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// *INT_TO_FP operation of the specified operand when the target requests that 246722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 246822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal UINT_TO_FP or SINT_TO_FP 246922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that takes a larger input. 2470475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalINT_TO_FP(SDValue LegalOp, 2471e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2472af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2473af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 247422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate *INT_TO_FP operation to use. 2475e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewInTy = LegalOp.getValueType(); 247622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 247722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 247822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 247922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 248022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2481825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewInTy = (MVT::SimpleValueType)(NewInTy.getSimpleVT().SimpleTy+1); 248283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewInTy.isInteger() && "Ran out of possibilities!"); 248322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 248422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports SINT_TO_FP of this type, use it. 24853be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::SINT_TO_FP, NewInTy)) { 24863be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::SINT_TO_FP; 24873be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 248822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 248922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) continue; 249022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 249122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports UINT_TO_FP of this type, use it. 24923be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::UINT_TO_FP, NewInTy)) { 24933be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::UINT_TO_FP; 24943be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 249522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 249622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 249722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 249822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 249922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 250022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Okay, we found the operation and type to use. Zero extend our input to the 250122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // desired type then run the operation on it. 2502af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(OpToUse, dl, DestVT, 250322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, 2504af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen dl, NewInTy, LegalOp)); 250577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 250677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 250722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalFP_TO_INT - This function is responsible for legalizing a 250822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// FP_TO_*INT operation of the specified operand when the target requests that 250922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 251022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal FP_TO_UINT or FP_TO_SINT 251122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that returns a larger result. 2512475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalFP_TO_INT(SDValue LegalOp, 2513e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2514af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2515af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 251622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate FP_TO*INT operation to use. 2517e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewOutTy = DestVT; 25189c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 251922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 2520e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 252122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 252222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2523825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewOutTy = (MVT::SimpleValueType)(NewOutTy.getSimpleVT().SimpleTy+1); 252483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewOutTy.isInteger() && "Ran out of possibilities!"); 252566de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner 25263be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_SINT, NewOutTy)) { 252722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_SINT; 252822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 252922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 2530e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 25313be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_UINT, NewOutTy)) { 253222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_UINT; 253322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 2534e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner } 25350d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 253622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 2537a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner } 2538a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner 2539fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 254027a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Okay, we found the operation and type to use. 2541af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Operation = DAG.getNode(OpToUse, dl, NewOutTy, LegalOp); 2542126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 254327a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Truncate the result of the extended FP_TO_*INT operation to the desired 254427a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // size. 2545af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(ISD::TRUNCATE, dl, DestVT, Operation); 254622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 254713689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner 254822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBSWAP - Open code the operations for BSWAP of the specified operation. 254922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 25508a782a2a8c2f0c82f292d03a3f707232b0bae27bDale JohannesenSDValue SelectionDAGLegalize::ExpandBSWAP(SDValue Op, DebugLoc dl) { 2551e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 255295771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson EVT SHVT = TLI.getShiftAmountTy(VT); 2553475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4, Tmp5, Tmp6, Tmp7, Tmp8; 2554825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (VT.getSimpleVT().SimpleTy) { 255535a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unhandled Expand type in BSWAP!"); 2556825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i16: 25578a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 25588a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 25598a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp1, Tmp2); 2560825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i32: 25618a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 25628a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 25638a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 25648a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 25658a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(0xFF0000, VT)); 25668a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(0xFF00, VT)); 25678a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 25688a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 25698a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 2570825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i64: 25718a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(56, SHVT)); 25728a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(40, SHVT)); 25738a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 25748a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 25758a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 25768a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 25778a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(40, SHVT)); 25788a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(56, SHVT)); 25798a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::AND, dl, VT, Tmp7, DAG.getConstant(255ULL<<48, VT)); 25808a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::AND, dl, VT, Tmp6, DAG.getConstant(255ULL<<40, VT)); 25818a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::AND, dl, VT, Tmp5, DAG.getConstant(255ULL<<32, VT)); 25828a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::AND, dl, VT, Tmp4, DAG.getConstant(255ULL<<24, VT)); 25838a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(255ULL<<16, VT)); 25848a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(255ULL<<8 , VT)); 25858a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp7); 25868a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::OR, dl, VT, Tmp6, Tmp5); 25878a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 25888a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 25898a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp6); 25908a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 25918a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp4); 25920d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner } 259377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 2594edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 2595b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer/// SplatByte - Distribute ByteVal over NumBits bits. 25965df5a22d1a098961edebac59fbddcab045fddd29Benjamin Kramer// FIXME: Move this helper to a common place. 2597b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramerstatic APInt SplatByte(unsigned NumBits, uint8_t ByteVal) { 2598b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer APInt Val = APInt(NumBits, ByteVal); 2599b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer unsigned Shift = 8; 2600b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer for (unsigned i = NumBits; i > 8; i >>= 1) { 2601b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Val = (Val << Shift) | Val; 2602b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Shift <<= 1; 2603b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer } 2604b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer return Val; 2605b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer} 2606b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer 260722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBitCount - Expand the specified bitcount instruction into operations. 260822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 2609fdc40a0a696c658d550d894ea03772e5f8af2c94Scott MichelSDValue SelectionDAGLegalize::ExpandBitCount(unsigned Opc, SDValue Op, 26108a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 261122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner switch (Opc) { 261235a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Cannot expand this yet!"); 261322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTPOP: { 2614e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 261595771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson EVT ShVT = TLI.getShiftAmountTy(VT); 2616b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer unsigned Len = VT.getSizeInBits(); 2617b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer 26185df5a22d1a098961edebac59fbddcab045fddd29Benjamin Kramer assert(VT.isInteger() && Len <= 128 && Len % 8 == 0 && 26195df5a22d1a098961edebac59fbddcab045fddd29Benjamin Kramer "CTPOP not implemented for this type."); 26205df5a22d1a098961edebac59fbddcab045fddd29Benjamin Kramer 2621b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // This is the "best" algorithm from 2622b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // http://graphics.stanford.edu/~seander/bithacks.html#CountBitsSetParallel 2623b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer 2624b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer SDValue Mask55 = DAG.getConstant(SplatByte(Len, 0x55), VT); 2625b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer SDValue Mask33 = DAG.getConstant(SplatByte(Len, 0x33), VT); 2626b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer SDValue Mask0F = DAG.getConstant(SplatByte(Len, 0x0F), VT); 2627b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer SDValue Mask01 = DAG.getConstant(SplatByte(Len, 0x01), VT); 2628b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer 2629b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // v = v - ((v >> 1) & 0x55555555...) 2630b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Op = DAG.getNode(ISD::SUB, dl, VT, Op, 2631b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::AND, dl, VT, 2632b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::SRL, dl, VT, Op, 2633b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getConstant(1, ShVT)), 2634b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Mask55)); 2635b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // v = (v & 0x33333333...) + ((v >> 2) & 0x33333333...) 2636b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Op = DAG.getNode(ISD::ADD, dl, VT, 2637b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::AND, dl, VT, Op, Mask33), 2638b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::AND, dl, VT, 2639b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::SRL, dl, VT, Op, 2640b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getConstant(2, ShVT)), 2641b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Mask33)); 2642b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // v = (v + (v >> 4)) & 0x0F0F0F0F... 2643b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Op = DAG.getNode(ISD::AND, dl, VT, 2644b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::ADD, dl, VT, Op, 2645b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::SRL, dl, VT, Op, 2646b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getConstant(4, ShVT))), 2647b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Mask0F); 2648b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // v = (v * 0x01010101...) >> (Len - 8) 2649b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Op = DAG.getNode(ISD::SRL, dl, VT, 2650b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::MUL, dl, VT, Op, Mask01), 2651b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getConstant(Len - 8, ShVT)); 265295771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson 265322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Op; 265422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 265522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTLZ: { 265622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we do this: 265722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 1); 265822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 2); 265922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // ... 266022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>16); 266122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>32); // for 64-bit input 266222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // return popcount(~x); 266322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // 266422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // but see also: http://www.hackersdelight.org/HDcode/nlz.cc 2665e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 266695771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson EVT ShVT = TLI.getShiftAmountTy(VT); 266783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 266822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 2669475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2670fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::OR, dl, VT, Op, 2671e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3)); 267222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 26738a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Op = DAG.getNOT(dl, Op, VT); 26748a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Op); 267522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 267622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTTZ: { 267722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we use: { return popcount(~x & (x - 1)); } 267822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // unless the target has ctlz but not ctpop, in which case we use: 267922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // { return 32 - nlz(~x & (x-1)); } 268022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // see also http://www.hackersdelight.org/HDcode/ntz.cc 2681e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 26828a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue Tmp3 = DAG.getNode(ISD::AND, dl, VT, 26838a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNOT(dl, Op, VT), 26848a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SUB, dl, VT, Op, 26857581bfa2757a3149c6d17c0fe592e5c3808aa843Bill Wendling DAG.getConstant(1, VT))); 268622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If ISD::CTLZ is legal and CTPOP isn't, then do that instead. 2687f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman if (!TLI.isOperationLegalOrCustom(ISD::CTPOP, VT) && 2688f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.isOperationLegalOrCustom(ISD::CTLZ, VT)) 26898a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::SUB, dl, VT, 269083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(VT.getSizeInBits(), VT), 26918a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::CTLZ, dl, VT, Tmp3)); 26928a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Tmp3); 269322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 269422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 269522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 2696e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 2697e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbachstd::pair <SDValue, SDValue> SelectionDAGLegalize::ExpandAtomic(SDNode *Node) { 2698e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach unsigned Opc = Node->getOpcode(); 2699e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach MVT VT = cast<AtomicSDNode>(Node)->getMemoryVT().getSimpleVT(); 2700e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach RTLIB::Libcall LC; 2701e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2702e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (Opc) { 2703e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: 2704e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach llvm_unreachable("Unhandled atomic intrinsic Expand!"); 2705e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2706ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case ISD::ATOMIC_SWAP: 2707ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach switch (VT.SimpleTy) { 2708ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2709ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case MVT::i8: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_1; break; 2710ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case MVT::i16: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_2; break; 2711ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case MVT::i32: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_4; break; 2712ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case MVT::i64: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_8; break; 2713ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach } 2714ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach break; 2715e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_CMP_SWAP: 2716e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2717e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2718e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_1; break; 2719e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_2; break; 2720e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_4; break; 2721e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_8; break; 2722e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2723e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2724e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_ADD: 2725e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2726e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2727e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_ADD_1; break; 2728e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_ADD_2; break; 2729e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_ADD_4; break; 2730e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_ADD_8; break; 2731e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2732e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2733e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_SUB: 2734e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2735e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2736e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_SUB_1; break; 2737e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_SUB_2; break; 2738e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_SUB_4; break; 2739e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_SUB_8; break; 2740e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2741e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2742e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_AND: 2743e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2744e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2745e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_AND_1; break; 2746e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_AND_2; break; 2747e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_AND_4; break; 2748e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_AND_8; break; 2749e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2750e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2751e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_OR: 2752e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2753e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2754e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_OR_1; break; 2755e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_OR_2; break; 2756e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_OR_4; break; 2757e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_OR_8; break; 2758e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2759e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2760e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_XOR: 2761e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2762e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2763e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_XOR_1; break; 2764e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_XOR_2; break; 2765e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_XOR_4; break; 2766e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_XOR_8; break; 2767e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2768e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2769e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_NAND: 2770e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2771e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2772e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_NAND_1; break; 2773e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_NAND_2; break; 2774e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_NAND_4; break; 2775e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_NAND_8; break; 2776e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2777e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2778e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2779e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2780e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach return ExpandChainLibCall(LC, Node, false); 2781e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach} 2782e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 27836f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohmanvoid SelectionDAGLegalize::ExpandNode(SDNode *Node, 27846f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SmallVectorImpl<SDValue> &Results) { 27858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 2786bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 27878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 27888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 27898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 27908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 27918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandBitCount(Node->getOpcode(), Node->getOperand(0), dl); 27928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 27938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 27948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: 2795775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandBSWAP(Node->getOperand(0), dl)); 27968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 27978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 27988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 27998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 28008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, Node->getValueType(0))); 28018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 28028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 28038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(1, Node->getValueType(0))); 28048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 28058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 28068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_LABEL: 28078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::PREFETCH: 28088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAEND: 2809c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach case ISD::EH_SJLJ_LONGJMP: 2810e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach case ISD::EH_SJLJ_DISPATCHSETUP: 2811e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach // If the target didn't expand these, there's nothing to do, so just 2812e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach // preserve the chain and be done. 2813c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach Results.push_back(Node->getOperand(0)); 2814c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach break; 2815c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach case ISD::EH_SJLJ_SETJMP: 2816e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach // If the target didn't expand this, just return 'zero' and preserve the 2817e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach // chain. 2818c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach Results.push_back(DAG.getConstant(0, MVT::i32)); 28198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(0)); 28208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 282114648468011c92a4210f8118721d58c25043daf8Eli Friedman case ISD::ATOMIC_FENCE: 2822bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach case ISD::MEMBARRIER: { 2823bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach // If the target didn't lower this, lower it to '__sync_synchronize()' call 282414648468011c92a4210f8118721d58c25043daf8Eli Friedman // FIXME: handle "fence singlethread" more efficiently. 2825bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach TargetLowering::ArgListTy Args; 2826bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach std::pair<SDValue, SDValue> CallResult = 2827bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach TLI.LowerCallTo(Node->getOperand(0), Type::getVoidTy(*DAG.getContext()), 28283d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng false, false, false, false, 0, CallingConv::C, 28293d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng /*isTailCall=*/false, 2830bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach /*isReturnValueUsed=*/true, 2831bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach DAG.getExternalSymbol("__sync_synchronize", 2832bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach TLI.getPointerTy()), 2833bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach Args, DAG, dl); 2834bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach Results.push_back(CallResult.second); 2835bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach break; 2836bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach } 2837069e2ed794a90cb5108a35627ee148866795f140Eli Friedman case ISD::ATOMIC_LOAD: { 2838069e2ed794a90cb5108a35627ee148866795f140Eli Friedman // There is no libcall for atomic load; fake it with ATOMIC_CMP_SWAP. 2839331120b1a482b782e8dffce63033bb8514ba2a96Eli Friedman SDValue Zero = DAG.getConstant(0, Node->getValueType(0)); 2840069e2ed794a90cb5108a35627ee148866795f140Eli Friedman SDValue Swap = DAG.getAtomic(ISD::ATOMIC_CMP_SWAP, dl, 2841069e2ed794a90cb5108a35627ee148866795f140Eli Friedman cast<AtomicSDNode>(Node)->getMemoryVT(), 2842069e2ed794a90cb5108a35627ee148866795f140Eli Friedman Node->getOperand(0), 2843069e2ed794a90cb5108a35627ee148866795f140Eli Friedman Node->getOperand(1), Zero, Zero, 2844069e2ed794a90cb5108a35627ee148866795f140Eli Friedman cast<AtomicSDNode>(Node)->getMemOperand(), 2845069e2ed794a90cb5108a35627ee148866795f140Eli Friedman cast<AtomicSDNode>(Node)->getOrdering(), 2846069e2ed794a90cb5108a35627ee148866795f140Eli Friedman cast<AtomicSDNode>(Node)->getSynchScope()); 2847069e2ed794a90cb5108a35627ee148866795f140Eli Friedman Results.push_back(Swap.getValue(0)); 2848069e2ed794a90cb5108a35627ee148866795f140Eli Friedman Results.push_back(Swap.getValue(1)); 2849069e2ed794a90cb5108a35627ee148866795f140Eli Friedman break; 2850069e2ed794a90cb5108a35627ee148866795f140Eli Friedman } 2851069e2ed794a90cb5108a35627ee148866795f140Eli Friedman case ISD::ATOMIC_STORE: { 2852069e2ed794a90cb5108a35627ee148866795f140Eli Friedman // There is no libcall for atomic store; fake it with ATOMIC_SWAP. 2853069e2ed794a90cb5108a35627ee148866795f140Eli Friedman SDValue Swap = DAG.getAtomic(ISD::ATOMIC_SWAP, dl, 2854069e2ed794a90cb5108a35627ee148866795f140Eli Friedman cast<AtomicSDNode>(Node)->getMemoryVT(), 2855069e2ed794a90cb5108a35627ee148866795f140Eli Friedman Node->getOperand(0), 2856069e2ed794a90cb5108a35627ee148866795f140Eli Friedman Node->getOperand(1), Node->getOperand(2), 2857069e2ed794a90cb5108a35627ee148866795f140Eli Friedman cast<AtomicSDNode>(Node)->getMemOperand(), 2858069e2ed794a90cb5108a35627ee148866795f140Eli Friedman cast<AtomicSDNode>(Node)->getOrdering(), 2859069e2ed794a90cb5108a35627ee148866795f140Eli Friedman cast<AtomicSDNode>(Node)->getSynchScope()); 2860069e2ed794a90cb5108a35627ee148866795f140Eli Friedman Results.push_back(Swap.getValue(1)); 2861069e2ed794a90cb5108a35627ee148866795f140Eli Friedman break; 2862069e2ed794a90cb5108a35627ee148866795f140Eli Friedman } 2863b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach // By default, atomic intrinsics are marked Legal and lowered. Targets 2864b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach // which don't support them directly, however, may want libcalls, in which 2865b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach // case they mark them Expand, and we get here. 2866b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_SWAP: 2867b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_ADD: 2868b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_SUB: 2869b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_AND: 2870b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_OR: 2871b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_XOR: 2872b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_NAND: 2873b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_MIN: 2874b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_MAX: 2875b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_UMIN: 2876b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_UMAX: 2877a845706dc1cebfe75913832e07ef114519a879d6Evan Cheng case ISD::ATOMIC_CMP_SWAP: { 2878e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach std::pair<SDValue, SDValue> Tmp = ExpandAtomic(Node); 2879e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Results.push_back(Tmp.first); 2880e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Results.push_back(Tmp.second); 288159c38f31acf87901208bbf790508196b1c0ad1fdJim Grosbach break; 2882a845706dc1cebfe75913832e07ef114519a879d6Evan Cheng } 28834bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::DYNAMIC_STACKALLOC: 28844bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ExpandDYNAMIC_STACKALLOC(Node, Results); 28854bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 28868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 28878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0; i < Node->getNumValues(); i++) 28888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(i)); 28898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 28908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UNDEF: { 2891e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 28928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (VT.isInteger()) 28938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, VT)); 289435a389344d21178ee280c2410401b2060b5b879cChris Lattner else { 289535a389344d21178ee280c2410401b2060b5b879cChris Lattner assert(VT.isFloatingPoint() && "Unknown value type!"); 28968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstantFP(0, VT)); 289735a389344d21178ee280c2410401b2060b5b879cChris Lattner } 28988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 28998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAP: { 29018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // If this operation is not supported, lower it to 'abort()' call 29028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::ArgListTy Args; 29038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman std::pair<SDValue, SDValue> CallResult = 29041d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson TLI.LowerCallTo(Node->getOperand(0), Type::getVoidTy(*DAG.getContext()), 29053d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng false, false, false, false, 0, CallingConv::C, 29063d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng /*isTailCall=*/false, 290798ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 29088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getExternalSymbol("abort", TLI.getPointerTy()), 290946ada19645c981a0b7932487d163f7582074a4d9Bill Wendling Args, DAG, dl); 29108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(CallResult.second); 29118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND: 2914bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck case ISD::BITCAST: 29158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), Node->getValueType(0), 29168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 29178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 29188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_EXTEND: 29208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), 29218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType(), 29228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 29238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 29248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 29268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: we could fall back on load/store here too for targets without 29278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // SAR. However, it is doubtful that any exist. 2928e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 292987862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman EVT VT = Node->getValueType(0); 293095771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson EVT ShiftAmountTy = TLI.getShiftAmountTy(VT); 2931d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman if (VT.isVector()) 293287862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman ShiftAmountTy = VT; 2933d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman unsigned BitsDiff = VT.getScalarType().getSizeInBits() - 2934d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman ExtraVT.getScalarType().getSizeInBits(); 293587862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman SDValue ShiftCst = DAG.getConstant(BitsDiff, ShiftAmountTy); 29368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SHL, dl, Node->getValueType(0), 29378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), ShiftCst); 2938775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SRA, dl, Node->getValueType(0), Tmp1, ShiftCst); 2939775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 29408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: { 29438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // The only way we can lower this is to turn it into a TRUNCSTORE, 29447a2bdde0a0eebcd2125055e0eacaca040f0b766cChris Lattner // EXTLOAD pair, targeting a temporary location (a stack slot). 29458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 29468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: there is a choice here between constantly creating new stack 29478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // slots and always reusing the same one. We currently always create 29488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // new ones, as reuse may inhibit scheduling. 2949e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 29508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), ExtraVT, 29518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 29528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 29538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 29568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 29578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandLegalINT_TO_FP(Node->getOpcode() == ISD::SINT_TO_FP, 29588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), Node->getValueType(0), dl); 29598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 29608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: { 29628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SDValue True, False; 2963e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getOperand(0).getValueType(); 2964e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = Node->getValueType(0); 29653069cbf7b3ef9a31bbb8e434686b7259052c364aBenjamin Kramer APFloat apf(APInt::getNullValue(VT.getSizeInBits())); 29668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APInt x = APInt::getSignBit(NVT.getSizeInBits()); 29678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman (void)apf.convertFromAPInt(x, false, APFloat::rmNearestTiesToEven); 29688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getConstantFP(apf, VT); 29698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), 29708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), 29718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, ISD::SETLT); 29728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman True = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, Node->getOperand(0)); 2973775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling False = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, 2974775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getNode(ISD::FSUB, dl, VT, 2975775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(0), Tmp1)); 29768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman False = DAG.getNode(ISD::XOR, dl, NVT, False, 29778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(x, NVT)); 29788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, True, False); 29798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 29808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 2982509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VAARG: { 2983509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman const Value *V = cast<SrcValueSDNode>(Node->getOperand(2))->getValue(); 2984e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2985509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2986509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 298772d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola unsigned Align = Node->getConstantOperandVal(3); 298872d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola 2989ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue VAListLoad = DAG.getLoad(TLI.getPointerTy(), dl, Tmp1, Tmp2, 2990ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(V), false, false, 0); 299172d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola SDValue VAList = VAListLoad; 299272d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola 2993cbeeae23c31d32b833c9c7c3e8984e4cbcf22f45Rafael Espindola if (Align > TLI.getMinStackArgumentAlignment()) { 2994cbeeae23c31d32b833c9c7c3e8984e4cbcf22f45Rafael Espindola assert(((Align & (Align-1)) == 0) && "Expected Align to be a power of 2"); 2995cbeeae23c31d32b833c9c7c3e8984e4cbcf22f45Rafael Espindola 299672d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola VAList = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList, 299772d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola DAG.getConstant(Align - 1, 299872d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola TLI.getPointerTy())); 299972d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola 300072d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola VAList = DAG.getNode(ISD::AND, dl, TLI.getPointerTy(), VAList, 300107e3a38c78d2788e05d716e7fa552b9449c87c33Chris Lattner DAG.getConstant(-(int64_t)Align, 300272d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola TLI.getPointerTy())); 300372d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola } 300472d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola 3005509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Increment the pointer, VAList, to the next vaarg 3006509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList, 3007509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(TLI.getTargetData()-> 3008adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng getTypeAllocSize(VT.getTypeForEVT(*DAG.getContext())), 3009509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TLI.getPointerTy())); 3010509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Store the incremented VAList to the legalized pointer 30116229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner Tmp3 = DAG.getStore(VAListLoad.getValue(1), dl, Tmp3, Tmp2, 30126229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner MachinePointerInfo(V), false, false, 0); 3013509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Load the actual argument out of the pointer VAList 3014ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Results.push_back(DAG.getLoad(VT, dl, Tmp3, VAList, MachinePointerInfo(), 30151e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0)); 3016509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Results[0].getValue(1)); 3017509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3018509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 30198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VACOPY: { 30208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This defaults to loading a pointer from the input and storing it to the 30218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // output, returning the chain. 30228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VD = cast<SrcValueSDNode>(Node->getOperand(3))->getValue(); 30238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VS = cast<SrcValueSDNode>(Node->getOperand(4))->getValue(); 30248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getLoad(TLI.getPointerTy(), dl, Node->getOperand(0), 3025ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Node->getOperand(2), MachinePointerInfo(VS), 3026ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, 0); 3027ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Tmp1 = DAG.getStore(Tmp1.getValue(1), dl, Tmp1, Node->getOperand(1), 3028ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(VD), false, false, 0); 3029775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 30308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 30318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 30328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 30338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOperand(0).getValueType().getVectorNumElements() == 1) 30348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This must be an access of the only element. Return it. 3035bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp1 = DAG.getNode(ISD::BITCAST, dl, Node->getValueType(0), 30368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 30378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 30388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandExtractFromVectorThroughStack(SDValue(Node, 0)); 30398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 30408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 30418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_SUBVECTOR: 3042775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandExtractFromVectorThroughStack(SDValue(Node, 0))); 30438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 3044cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene case ISD::INSERT_SUBVECTOR: 3045cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene Results.push_back(ExpandInsertToVectorThroughStack(SDValue(Node, 0))); 3046cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene break; 3047509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::CONCAT_VECTORS: { 3048775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandVectorBuildThroughStack(Node)); 3049509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3050509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 30518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SCALAR_TO_VECTOR: 3052775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandSCALAR_TO_VECTOR(Node)); 30538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 30543f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INSERT_VECTOR_ELT: 3055775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandINSERT_VECTOR_ELT(Node->getOperand(0), 3056775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1), 3057775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(2), dl)); 30583f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 3059509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 3060509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 3061509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 3062509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3063e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 3064e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 306575b10047fc57c30c86bb7c9ea0ee923ff3c33a7eDan Gohman if (!TLI.isTypeLegal(EltVT)) 306614b2141497a913a2d5b508a0174ba09cac61e0bfBob Wilson EltVT = TLI.getTypeToTransformTo(*DAG.getContext(), EltVT); 3067509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned NumElems = VT.getVectorNumElements(); 3068509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<SDValue, 8> Ops; 3069509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman for (unsigned i = 0; i != NumElems; ++i) { 3070509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Mask[i] < 0) { 3071509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getUNDEF(EltVT)); 3072509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman continue; 3073509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3074509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned Idx = Mask[i]; 3075509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Idx < NumElems) 3076775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 3077775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(0), 3078775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getIntPtrConstant(Idx))); 3079509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 3080775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 3081775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1), 3082775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getIntPtrConstant(Idx - NumElems))); 3083509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3084509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &Ops[0], Ops.size()); 3085509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3086509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3087509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 30888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: { 3089e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpTy = Node->getOperand(0).getValueType(); 30908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (cast<ConstantSDNode>(Node->getOperand(1))->getZExtValue()) { 30918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 1 -> Hi 30928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRL, dl, OpTy, Node->getOperand(0), 30938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OpTy.getSizeInBits()/2, 309495771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(Node->getOperand(0).getValueType()))); 30958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), Tmp1); 30968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 30978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 0 -> Lo 30988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), 30998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 31008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 31018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 31028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 31038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 31043f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKSAVE: 31053f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // Expand to CopyFromReg if the target set 31063f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // StackPointerRegisterToSaveRestore. 31073f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 3108775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, SP, 3109775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 31103f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Results[0].getValue(1)); 31113f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } else { 3112775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getUNDEF(Node->getValueType(0))); 31133f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Node->getOperand(0)); 31143f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 31153f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 31163f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKRESTORE: 3117775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // Expand to CopyToReg if the target set 3118775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // StackPointerRegisterToSaveRestore. 3119775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 3120775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyToReg(Node->getOperand(0), dl, SP, 3121775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1))); 3122775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 3123775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Node->getOperand(0)); 3124775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 31253f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 31264bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::FCOPYSIGN: 3127775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFCOPYSIGN(Node)); 31284bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 3129f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEG: 3130f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FNEG(X) -> Y = SUB -0.0, X 3131f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getConstantFP(-0.0, Node->getValueType(0)); 3132f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(ISD::FSUB, dl, Node->getValueType(0), Tmp1, 3133f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Node->getOperand(0)); 3134f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 3135f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3136f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FABS: { 3137f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FABS(X) -> Y = (X >u 0.0) ? X : fneg(X). 3138e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 3139f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = Node->getOperand(0); 3140f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp2 = DAG.getConstantFP(0.0, VT); 3141775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(Tmp1.getValueType()), 3142f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1, Tmp2, ISD::SETUGT); 3143775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp3 = DAG.getNode(ISD::FNEG, dl, VT, Tmp1); 3144775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SELECT, dl, VT, Tmp2, Tmp1, Tmp3); 3145f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 3146f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3147f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 3148f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSQRT: 3149775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::SQRT_F32, RTLIB::SQRT_F64, 3150775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::SQRT_F80, RTLIB::SQRT_PPCF128)); 3151f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3152f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSIN: 3153775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::SIN_F32, RTLIB::SIN_F64, 3154775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::SIN_F80, RTLIB::SIN_PPCF128)); 3155f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3156f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCOS: 3157775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::COS_F32, RTLIB::COS_F64, 3158775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::COS_F80, RTLIB::COS_PPCF128)); 3159f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3160f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG: 3161775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG_F32, RTLIB::LOG_F64, 3162775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG_F80, RTLIB::LOG_PPCF128)); 3163f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3164f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG2: 3165775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG2_F32, RTLIB::LOG2_F64, 3166775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG2_F80, RTLIB::LOG2_PPCF128)); 3167f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3168f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG10: 3169775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG10_F32, RTLIB::LOG10_F64, 3170775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG10_F80, RTLIB::LOG10_PPCF128)); 3171f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3172f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP: 3173775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP_F32, RTLIB::EXP_F64, 3174775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::EXP_F80, RTLIB::EXP_PPCF128)); 3175f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3176f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP2: 3177775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP2_F32, RTLIB::EXP2_F64, 3178775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::EXP2_F80, RTLIB::EXP2_PPCF128)); 3179f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3180f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FTRUNC: 3181775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::TRUNC_F32, RTLIB::TRUNC_F64, 3182775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::TRUNC_F80, RTLIB::TRUNC_PPCF128)); 3183f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3184f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FFLOOR: 3185775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::FLOOR_F32, RTLIB::FLOOR_F64, 3186775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::FLOOR_F80, RTLIB::FLOOR_PPCF128)); 3187f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3188f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCEIL: 3189775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::CEIL_F32, RTLIB::CEIL_F64, 3190775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::CEIL_F80, RTLIB::CEIL_PPCF128)); 3191f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3192f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FRINT: 3193775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::RINT_F32, RTLIB::RINT_F64, 3194775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::RINT_F80, RTLIB::RINT_PPCF128)); 3195f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3196f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEARBYINT: 3197775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::NEARBYINT_F32, 3198775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_F64, 3199775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_F80, 3200775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_PPCF128)); 3201f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3202f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOWI: 3203775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::POWI_F32, RTLIB::POWI_F64, 3204775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::POWI_F80, RTLIB::POWI_PPCF128)); 3205f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3206f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOW: 3207775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::POW_F32, RTLIB::POW_F64, 3208775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::POW_F80, RTLIB::POW_PPCF128)); 3209f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3210f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FDIV: 3211775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::DIV_F32, RTLIB::DIV_F64, 3212775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::DIV_F80, RTLIB::DIV_PPCF128)); 3213f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3214f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FREM: 3215775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::REM_F32, RTLIB::REM_F64, 3216775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::REM_F80, RTLIB::REM_PPCF128)); 3217f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 321833390848a7eca75301d04a59b89b516d83e19ee0Cameron Zwarich case ISD::FMA: 321933390848a7eca75301d04a59b89b516d83e19ee0Cameron Zwarich Results.push_back(ExpandFPLibCall(Node, RTLIB::FMA_F32, RTLIB::FMA_F64, 322033390848a7eca75301d04a59b89b516d83e19ee0Cameron Zwarich RTLIB::FMA_F80, RTLIB::FMA_PPCF128)); 322133390848a7eca75301d04a59b89b516d83e19ee0Cameron Zwarich break; 3222927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov case ISD::FP16_TO_FP32: 3223927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov Results.push_back(ExpandLibCall(RTLIB::FPEXT_F16_F32, Node, false)); 3224927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov break; 3225927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov case ISD::FP32_TO_FP16: 3226927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov Results.push_back(ExpandLibCall(RTLIB::FPROUND_F32_F16, Node, false)); 3227927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov break; 3228f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::ConstantFP: { 3229f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman ConstantFPSDNode *CFP = cast<ConstantFPSDNode>(Node); 3230775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // Check to see if this FP immediate is already legal. 3231775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // If this is a legal constant, turn it into a TargetConstantFP node. 32326f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman if (TLI.isFPImmLegal(CFP->getValueAPF(), Node->getValueType(0))) 32336f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Results.push_back(SDValue(Node, 0)); 32346f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman else 32356f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Results.push_back(ExpandConstantFP(CFP, true, DAG, TLI)); 3236f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 3237f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 323826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EHSELECTION: { 323926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionSelectorRegister(); 324026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 3241775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(1), dl, Reg, 3242775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 324326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 324426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 324526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 324626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EXCEPTIONADDR: { 324726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionAddressRegister(); 324826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 3249775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, Reg, 3250775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 325126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 325226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 325326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 325426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::SUB: { 3255e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 325626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ISD::ADD, VT) && 325726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman TLI.isOperationLegalOrCustom(ISD::XOR, VT) && 325826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "Don't know how to expand this subtraction!"); 325926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ISD::XOR, dl, VT, Node->getOperand(1), 326026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman DAG.getConstant(APInt::getAllOnesValue(VT.getSizeInBits()), VT)); 3261775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::ADD, dl, VT, Tmp2, DAG.getConstant(1, VT)); 3262775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::ADD, dl, VT, Node->getOperand(0), Tmp1)); 326326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 326426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 3265f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UREM: 3266f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SREM: { 3267e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 326826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 3269f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SREM; 3270f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivOpc = isSigned ? ISD::SDIV : ISD::UDIV; 3271f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 3272f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(0); 3273f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp3 = Node->getOperand(1); 327465279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng if (TLI.isOperationLegalOrCustom(DivRemOpc, VT) || 327565279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng (isDivRemLibcallAvailable(Node, isSigned, TLI) && 327665279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng UseDivRem(Node, isSigned, false))) { 32773be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Tmp2, Tmp3).getValue(1); 32783be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } else if (TLI.isOperationLegalOrCustom(DivOpc, VT)) { 3279f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // X % Y -> X-X/Y*Y 3280f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivOpc, dl, VT, Tmp2, Tmp3); 3281f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, VT, Tmp1, Tmp3); 3282f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, Tmp2, Tmp1); 328365279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng } else if (isSigned) 328465279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng Tmp1 = ExpandIntLibCall(Node, true, 328565279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::SREM_I8, 328665279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::SREM_I16, RTLIB::SREM_I32, 328765279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::SREM_I64, RTLIB::SREM_I128); 328865279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng else 328965279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng Tmp1 = ExpandIntLibCall(Node, false, 329065279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::UREM_I8, 329165279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::UREM_I16, RTLIB::UREM_I32, 329265279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::UREM_I64, RTLIB::UREM_I128); 329326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 329426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 329526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 3296f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UDIV: 3297f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SDIV: { 3298f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SDIV; 3299f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 3300e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 330126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 330265279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng if (TLI.isOperationLegalOrCustom(DivRemOpc, VT) || 330365279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng (isDivRemLibcallAvailable(Node, isSigned, TLI) && 330465279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng UseDivRem(Node, isSigned, true))) 3305f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Node->getOperand(0), 3306f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(1)); 330765279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng else if (isSigned) 330865279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng Tmp1 = ExpandIntLibCall(Node, true, 330965279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::SDIV_I8, 331065279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::SDIV_I16, RTLIB::SDIV_I32, 331165279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::SDIV_I64, RTLIB::SDIV_I128); 331265279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng else 331365279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng Tmp1 = ExpandIntLibCall(Node, false, 331465279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::UDIV_I8, 331565279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::UDIV_I16, RTLIB::UDIV_I32, 331665279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::UDIV_I64, RTLIB::UDIV_I128); 331726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 331826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 331926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 332026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHU: 332126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHS: { 332226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned ExpandOpcode = Node->getOpcode() == ISD::MULHU ? ISD::UMUL_LOHI : 332326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman ISD::SMUL_LOHI; 3324e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 332526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 332626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ExpandOpcode, VT) && 332726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "If this wasn't legal, it shouldn't have been created!"); 332826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ExpandOpcode, dl, VTs, Node->getOperand(0), 332926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getOperand(1)); 333026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1.getValue(1)); 333126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 333226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 333365279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng case ISD::SDIVREM: 333465279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng case ISD::UDIVREM: 333565279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng // Expand into divrem libcall 333665279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng ExpandDivRemLibCall(Node, Results); 333765279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng break; 333826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MUL: { 3339e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 334026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 334126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // See if multiply or divide can be lowered using two-result operations. 334226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // We just need the low half of the multiply; try both the signed 334326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // and unsigned forms. If the target supports both SMUL_LOHI and 334426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // UMUL_LOHI, form a preference by checking which forms of plain 334526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // MULH it supports. 334626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasSMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::SMUL_LOHI, VT); 334726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasUMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::UMUL_LOHI, VT); 334826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHS = TLI.isOperationLegalOrCustom(ISD::MULHS, VT); 334926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHU = TLI.isOperationLegalOrCustom(ISD::MULHU, VT); 335026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned OpToUse = 0; 335126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (HasSMUL_LOHI && !HasMULHS) { 335226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 335326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI && !HasMULHU) { 335426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 335526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasSMUL_LOHI) { 335626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 335726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI) { 335826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 335926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 336026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (OpToUse) { 3361775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(OpToUse, dl, VTs, Node->getOperand(0), 3362775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1))); 336326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 336426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 33658983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, false, 33668983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::MUL_I8, 33678983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::MUL_I16, RTLIB::MUL_I32, 336826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::MUL_I64, RTLIB::MUL_I128); 336926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 337026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 337126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 33724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SADDO: 33734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SSUBO: { 33744bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 33754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 33764bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::SADDO ? 33774bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 33784bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 33794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 3380122d06de7482dcb39e7dbcbfe302e39cc55627e5Bill Wendling EVT OType = Node->getValueType(1); 3381775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling 33824bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Zero = DAG.getConstant(0, LHS.getValueType()); 33834bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 33844bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // LHSSign -> LHS >= 0 33854bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RHSSign -> RHS >= 0 33864bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // SumSign -> Sum >= 0 33874bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 33884bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Add: 33894bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign == RHSSign) && (LHSSign != SumSign) 33904bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Sub: 33914bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign != RHSSign) && (LHSSign != SumSign) 33924bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 33934bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHSSign = DAG.getSetCC(dl, OType, LHS, Zero, ISD::SETGE); 33944bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHSSign = DAG.getSetCC(dl, OType, RHS, Zero, ISD::SETGE); 33954bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignsMatch = DAG.getSetCC(dl, OType, LHSSign, RHSSign, 33964bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Node->getOpcode() == ISD::SADDO ? 33974bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETEQ : ISD::SETNE); 33984bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 33994bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSign = DAG.getSetCC(dl, OType, Sum, Zero, ISD::SETGE); 34004bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSignNE = DAG.getSetCC(dl, OType, LHSSign, SumSign, ISD::SETNE); 34014bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 34024bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Cmp = DAG.getNode(ISD::AND, dl, OType, SignsMatch, SumSignNE); 34034bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Cmp); 34044bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 34054bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 34064bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::UADDO: 34074bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::USUBO: { 34084bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 34094bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 34104bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::UADDO ? 34114bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 34124bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 34134bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 3414775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getSetCC(dl, Node->getValueType(1), Sum, LHS, 3415775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOpcode () == ISD::UADDO ? 3416775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling ISD::SETULT : ISD::SETUGT)); 34174bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 34184bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 3419db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::UMULO: 3420db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::SMULO: { 3421e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 3422abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher EVT WideVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits() * 2); 3423db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue LHS = Node->getOperand(0); 3424db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue RHS = Node->getOperand(1); 3425db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue BottomHalf; 3426db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue TopHalf; 3427ec9d8b00470b2ddabef4e1b58b4f60d69995d8ceNuno Lopes static const unsigned Ops[2][3] = 3428db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { { ISD::MULHU, ISD::UMUL_LOHI, ISD::ZERO_EXTEND }, 3429db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { ISD::MULHS, ISD::SMUL_LOHI, ISD::SIGN_EXTEND }}; 3430db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman bool isSigned = Node->getOpcode() == ISD::SMULO; 3431db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (TLI.isOperationLegalOrCustom(Ops[isSigned][0], VT)) { 3432db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::MUL, dl, VT, LHS, RHS); 3433db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(Ops[isSigned][0], dl, VT, LHS, RHS); 3434db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else if (TLI.isOperationLegalOrCustom(Ops[isSigned][1], VT)) { 3435db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(Ops[isSigned][1], dl, DAG.getVTList(VT, VT), LHS, 3436db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS); 3437db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = BottomHalf.getValue(1); 343838a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher } else if (TLI.isTypeLegal(EVT::getIntegerVT(*DAG.getContext(), 343938a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher VT.getSizeInBits() * 2))) { 3440db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman LHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, LHS); 3441db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, RHS); 3442db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, WideVT, LHS, RHS); 3443db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 3444db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(0)); 3445db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 3446db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(1)); 344738a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher } else { 344838a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher // We can fall back to a libcall with an illegal type for the MUL if we 344938a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher // have a libcall big enough. 345038a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher // Also, we can fall back to a division in some cases, but that's a big 345138a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher // performance hit in the general case. 345238a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 345338a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher if (WideVT == MVT::i16) 345438a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher LC = RTLIB::MUL_I16; 345538a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher else if (WideVT == MVT::i32) 345638a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher LC = RTLIB::MUL_I32; 345738a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher else if (WideVT == MVT::i64) 345838a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher LC = RTLIB::MUL_I64; 345938a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher else if (WideVT == MVT::i128) 346038a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher LC = RTLIB::MUL_I128; 346138a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher assert(LC != RTLIB::UNKNOWN_LIBCALL && "Cannot expand this operation!"); 3462f316eb70743e88227b8919370fe38587ffe93512Dan Gohman 3463f316eb70743e88227b8919370fe38587ffe93512Dan Gohman // The high part is obtained by SRA'ing all but one of the bits of low 3464abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher // part. 3465abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher unsigned LoSize = VT.getSizeInBits(); 3466abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher SDValue HiLHS = DAG.getNode(ISD::SRA, dl, VT, RHS, 3467abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher DAG.getConstant(LoSize-1, TLI.getPointerTy())); 3468abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher SDValue HiRHS = DAG.getNode(ISD::SRA, dl, VT, LHS, 3469abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher DAG.getConstant(LoSize-1, TLI.getPointerTy())); 3470abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher 3471abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher // Here we're passing the 2 arguments explicitly as 4 arguments that are 3472abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher // pre-lowered to the correct types. This all depends upon WideVT not 3473abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher // being a legal type for the architecture and thus has to be split to 3474abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher // two arguments. 3475abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher SDValue Args[] = { LHS, HiLHS, RHS, HiRHS }; 3476abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher SDValue Ret = ExpandLibCall(LC, WideVT, Args, 4, isSigned, dl); 3477abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher BottomHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Ret, 3478abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher DAG.getIntPtrConstant(0)); 3479abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher TopHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Ret, 3480abbbfbd6726c7af8b27479b4311fe6bb6c40b52bEric Christopher DAG.getIntPtrConstant(1)); 3481db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 3482f316eb70743e88227b8919370fe38587ffe93512Dan Gohman 3483db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (isSigned) { 348495771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson Tmp1 = DAG.getConstant(VT.getSizeInBits() - 1, 348595771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(BottomHalf.getValueType())); 3486db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::SRA, dl, VT, BottomHalf, Tmp1); 3487db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, Tmp1, 3488db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman ISD::SETNE); 3489db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else { 3490db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, 3491db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getConstant(0, VT), ISD::SETNE); 3492db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 3493db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(BottomHalf); 3494db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(TopHalf); 3495db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman break; 3496db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 3497f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BUILD_PAIR: { 3498e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PairTy = Node->getValueType(0); 3499f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, PairTy, Node->getOperand(0)); 3500f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = DAG.getNode(ISD::ANY_EXTEND, dl, PairTy, Node->getOperand(1)); 3501775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2 = DAG.getNode(ISD::SHL, dl, PairTy, Tmp2, 3502f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(PairTy.getSizeInBits()/2, 350395771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(PairTy))); 3504775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::OR, dl, PairTy, Tmp1, Tmp2)); 3505f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 3506f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 3507509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::SELECT: 3508509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 3509509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 3510509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = Node->getOperand(2); 3511775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (Tmp1.getOpcode() == ISD::SETCC) { 3512509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1.getOperand(0), Tmp1.getOperand(1), 3513509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, 3514509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<CondCodeSDNode>(Tmp1.getOperand(2))->get()); 3515775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 3516509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1, 3517509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(0, Tmp1.getValueType()), 3518509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, ISD::SETNE); 3519775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 3520509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3521509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 35224bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::BR_JT: { 35234bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Node->getOperand(0); 35244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Table = Node->getOperand(1); 35254bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Index = Node->getOperand(2); 35264bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 3527e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PTy = TLI.getPointerTy(); 3528071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner 3529071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner const TargetData &TD = *TLI.getTargetData(); 3530071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner unsigned EntrySize = 3531071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner DAG.getMachineFunction().getJumpTableInfo()->getEntrySize(TD); 35326e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach 3533071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner Index = DAG.getNode(ISD::MUL, dl, PTy, 35344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Index, DAG.getConstant(EntrySize, PTy)); 35354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Addr = DAG.getNode(ISD::ADD, dl, PTy, Index, Table); 35364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 353723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), EntrySize * 8); 3538a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings SDValue LD = DAG.getExtLoad(ISD::SEXTLOAD, dl, PTy, Chain, Addr, 353985ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getJumpTable(), MemVT, 35401e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 35414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = LD; 354255e59c186303ff02c0be7429da3b1b36c347f164Dan Gohman if (TM.getRelocationModel() == Reloc::PIC_) { 35434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // For PIC, the sequence is: 3544775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // BRIND(load(Jumptable + index) + RelocBase) 35454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RelocBase can be JumpTable, GOT or some sort of global base. 35464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = DAG.getNode(ISD::ADD, dl, PTy, Addr, 35474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getPICJumpTableRelocBase(Table, DAG)); 35484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 3549825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BRIND, dl, MVT::Other, LD.getValue(1), Addr); 35504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 35514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 35524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 3553f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BRCOND: 3554f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Expand brcond's setcc into its constituent parts and create a BR_CC 3555f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Node. 3556f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = Node->getOperand(0); 3557f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(1); 3558775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (Tmp2.getOpcode() == ISD::SETCC) { 3559825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, 3560f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1, Tmp2.getOperand(2), 3561f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2.getOperand(0), Tmp2.getOperand(1), 3562f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 3563775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 356488882247d2e1bb70103062faf5bd15dd8a30b2d1Stuart Hastings // We test only the i1 bit. Skip the AND if UNDEF. 356588882247d2e1bb70103062faf5bd15dd8a30b2d1Stuart Hastings Tmp3 = (Tmp2.getOpcode() == ISD::UNDEF) ? Tmp2 : 356688882247d2e1bb70103062faf5bd15dd8a30b2d1Stuart Hastings DAG.getNode(ISD::AND, dl, Tmp2.getValueType(), Tmp2, 356788882247d2e1bb70103062faf5bd15dd8a30b2d1Stuart Hastings DAG.getConstant(1, Tmp2.getValueType())); 3568825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, Tmp1, 356988882247d2e1bb70103062faf5bd15dd8a30b2d1Stuart Hastings DAG.getCondCode(ISD::SETNE), Tmp3, 357088882247d2e1bb70103062faf5bd15dd8a30b2d1Stuart Hastings DAG.getConstant(0, Tmp3.getValueType()), 3571f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 3572775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 3573f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(Tmp1); 3574f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 3575ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 3576ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = Node->getOperand(0); 3577ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp2 = Node->getOperand(1); 3578ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp3 = Node->getOperand(2); 3579775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling LegalizeSetCCCondCode(Node->getValueType(0), Tmp1, Tmp2, Tmp3, dl); 3580ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 3581ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // If we expanded the SETCC into an AND/OR, return the new node 3582ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman if (Tmp2.getNode() == 0) { 3583ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 3584ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3585ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 3586ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 3587ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // Otherwise, SETCC for the given comparison type must be completely 3588ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // illegal; expand it into a SELECT_CC. 3589e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 3590ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, VT, Tmp1, Tmp2, 3591ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman DAG.getConstant(1, VT), DAG.getConstant(0, VT), Tmp3); 3592ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 3593ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3594ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 3595bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::SELECT_CC: { 3596bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // LHS 3597bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(1); // RHS 3598bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(2); // True 3599bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(3); // False 3600bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue CC = Node->getOperand(4); 3601bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3602bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp1.getValueType()), 3603775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1, Tmp2, CC, dl); 3604bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3605bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp2.getNode() && "Can't legalize SELECT_CC with legal condition!"); 3606bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = DAG.getConstant(0, Tmp1.getValueType()); 3607bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman CC = DAG.getCondCode(ISD::SETNE); 3608bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, Node->getValueType(0), Tmp1, Tmp2, 3609bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Tmp4, CC); 3610bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 3611bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 3612bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 3613bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::BR_CC: { 3614bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // Chain 3615bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(2); // LHS 3616bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(3); // RHS 3617bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(1); // CC 3618bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3619bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp2.getValueType()), 3620775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2, Tmp3, Tmp4, dl); 36216f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman LastCALLSEQ_END = DAG.getEntryNode(); 3622bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3623bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp3.getNode() && "Can't legalize BR_CC with legal condition!"); 3624bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = DAG.getConstant(0, Tmp2.getValueType()); 3625bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = DAG.getCondCode(ISD::SETNE); 3626bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::BR_CC, dl, Node->getValueType(0), Tmp1, Tmp4, Tmp2, 3627bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Node->getOperand(4)); 3628bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 3629bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 3630bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 36313f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GLOBAL_OFFSET_TABLE: 36323f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalAddress: 36333f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalTLSAddress: 36343f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ExternalSymbol: 36353f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ConstantPool: 36363f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::JumpTable: 36373f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_W_CHAIN: 36383f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_WO_CHAIN: 36393f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_VOID: 36403f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // FIXME: Custom lowering for these operations shouldn't return null! 36416f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 36426f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman Results.push_back(SDValue(Node, i)); 36433f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 36448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 36458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 36466f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohmanvoid SelectionDAGLegalize::PromoteNode(SDNode *Node, 36476f3ddef7c51f03945644ad0e69068dfb24d4b092Dan Gohman SmallVectorImpl<SDValue> &Results) { 3648e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OVT = Node->getValueType(0); 36498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::UINT_TO_FP || 3650a64eb92fe305424ebde2e3de2b12160b8bf76047Eli Friedman Node->getOpcode() == ISD::SINT_TO_FP || 3651775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOpcode() == ISD::SETCC) { 36528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT = Node->getOperand(0).getValueType(); 3653775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 3654e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), OVT); 36558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 3656509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SDValue Tmp1, Tmp2, Tmp3; 36578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 36588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 36598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 36608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 36618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Zero extend the argument. 36628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0)); 36638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Perform the larger operation. 36649a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1); 36658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::CTTZ) { 36668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman //if Tmp1 == sizeinbits(NVT) then Tmp1 = sizeinbits(Old VT) 36679a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), 36688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, DAG.getConstant(NVT.getSizeInBits(), NVT), 36698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ISD::SETEQ); 36708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, 36718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OVT.getSizeInBits(), NVT), Tmp1); 36728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else if (Node->getOpcode() == ISD::CTLZ) { 36738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Tmp1 = Tmp1 - (sizeinbits(NVT) - sizeinbits(Old VT)) 36748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, NVT, Tmp1, 36758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(NVT.getSizeInBits() - 36768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT.getSizeInBits(), NVT)); 36778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 3678775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::TRUNCATE, dl, OVT, Tmp1)); 36798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 36808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: { 36818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman unsigned DiffBits = NVT.getSizeInBits() - OVT.getSizeInBits(); 3682167bea71a4bd19329a218f5e1bd8facfd90a0cf9Bill Wendling Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0)); 3683775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::BSWAP, dl, NVT, Tmp1); 3684775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SRL, dl, NVT, Tmp1, 368595771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson DAG.getConstant(DiffBits, TLI.getShiftAmountTy(NVT))); 3686775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 36878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 36888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 36898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: 36908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_SINT: 36918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalFP_TO_INT(Node->getOperand(0), Node->getValueType(0), 36928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::FP_TO_SINT, dl); 36938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 36948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 36958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 36968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 36978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalINT_TO_FP(Node->getOperand(0), Node->getValueType(0), 36988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::SINT_TO_FP, dl); 36998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 37008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 3701f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::AND: 3702f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::OR: 3703c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::XOR: { 3704c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen unsigned ExtOp, TruncOp; 3705c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen if (OVT.isVector()) { 3706bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck ExtOp = ISD::BITCAST; 3707bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck TruncOp = ISD::BITCAST; 370835a389344d21178ee280c2410401b2060b5b879cChris Lattner } else { 370935a389344d21178ee280c2410401b2060b5b879cChris Lattner assert(OVT.isInteger() && "Cannot promote logic operation"); 3710c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen ExtOp = ISD::ANY_EXTEND; 3711c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen TruncOp = ISD::TRUNCATE; 3712c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3713c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Promote each of the values to the new type. 3714c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 3715c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3716c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Perform the larger operation, then convert back 3717775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1, Tmp2); 3718775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(TruncOp, dl, OVT, Tmp1)); 3719f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3720c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3721c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::SELECT: { 3722509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned ExtOp, TruncOp; 37234bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Node->getValueType(0).isVector()) { 3724bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck ExtOp = ISD::BITCAST; 3725bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck TruncOp = ISD::BITCAST; 37264bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else if (Node->getValueType(0).isInteger()) { 3727509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::ANY_EXTEND; 3728509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::TRUNCATE; 3729509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } else { 3730509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::FP_EXTEND; 3731509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::FP_ROUND; 3732509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3733509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 3734509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Promote each of the values to the new type. 3735509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3736509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(2)); 3737509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Perform the larger operation, then round down. 3738509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp1, Tmp2, Tmp3); 3739509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (TruncOp != ISD::FP_ROUND) 3740775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1); 3741509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 3742775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1, 3743509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(0)); 3744775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 3745509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3746c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3747509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 3748509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 3749509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 3750509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3751509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Cast the two input vectors. 3752bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp1 = DAG.getNode(ISD::BITCAST, dl, NVT, Node->getOperand(0)); 3753bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp2 = DAG.getNode(ISD::BITCAST, dl, NVT, Node->getOperand(1)); 3754509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3755509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Convert the shuffle mask to the right # elements. 3756775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = ShuffleWithNarrowerEltType(NVT, OVT, dl, Tmp1, Tmp2, Mask); 3757bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp1 = DAG.getNode(ISD::BITCAST, dl, OVT, Tmp1); 3758509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3759509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3760509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3761ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 376278d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen unsigned ExtOp = ISD::FP_EXTEND; 376378d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen if (NVT.isInteger()) { 376478d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ISD::CondCode CCCode = 376578d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen cast<CondCodeSDNode>(Node->getOperand(2))->get(); 376678d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ExtOp = isSignedIntSetCC(CCCode) ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND; 3767ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 376878d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 376978d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3770ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(DAG.getNode(ISD::SETCC, dl, Node->getValueType(0), 3771ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1, Tmp2, Node->getOperand(2))); 3772ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3773ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 37748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 37758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 37768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 37773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// SelectionDAG::Legalize - This is the entry point for the file. 37783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 3779975716af1b9a09274df6c2d92683449015bd8564Dan Gohmanvoid SelectionDAG::Legalize() { 37803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// run - This is the main entry point to this class. 37813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 3782975716af1b9a09274df6c2d92683449015bd8564Dan Gohman SelectionDAGLegalize(*this).LegalizeDAG(); 37833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 3784