LegalizeDAG.cpp revision 46ada19645c981a0b7932487d163f7582074a4d9
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 143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/CodeGen/SelectionDAG.h" 153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/CodeGen/MachineFunction.h" 1645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner#include "llvm/CodeGen/MachineFrameInfo.h" 17acd80ac7bb19f8bdfa55336d567c9ecbe695c8b8Jim Laskey#include "llvm/CodeGen/MachineJumpTableInfo.h" 1884bc5427d6883f73cfeae3da640acd011d35c006Chris Lattner#include "llvm/CodeGen/MachineModuleInfo.h" 1983489bb7700c69b7a4a8da59365c42d3f5c8129bDevang Patel#include "llvm/CodeGen/DwarfWriter.h" 2083489bb7700c69b7a4a8da59365c42d3f5c8129bDevang Patel#include "llvm/Analysis/DebugInfo.h" 2169de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman#include "llvm/CodeGen/PseudoSourceValue.h" 2261bbbabe3da27479cc9a3a36e49091a1141ba7a3Evan Cheng#include "llvm/Target/TargetFrameInfo.h" 233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/Target/TargetLowering.h" 24e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner#include "llvm/Target/TargetData.h" 253d4ce1108520a4dcf31cb01523e145d286ee64c1Evan Cheng#include "llvm/Target/TargetMachine.h" 260f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner#include "llvm/Target/TargetOptions.h" 27707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman#include "llvm/Target/TargetSubtarget.h" 28adf6a965a321372c640845407195594835921eb4Chris Lattner#include "llvm/CallingConv.h" 293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/Constants.h" 30c10305743c313558405079452138f03124e87581Reid Spencer#include "llvm/DerivedTypes.h" 3186e6cb924b85e7a288a4d8bfde5d1a8fb9810c88Bill Wendling#include "llvm/Function.h" 3283489bb7700c69b7a4a8da59365c42d3f5c8129bDevang Patel#include "llvm/GlobalVariable.h" 339adc0abad3c3ed40a268ccbcee0c74cb9e1359feOwen Anderson#include "llvm/LLVMContext.h" 345e46a19ec848cd4fc9649bd5170c43d9e657668cChris Lattner#include "llvm/Support/CommandLine.h" 35993aacedfdc3f156f667b4efa280ee79eab3b898David Greene#include "llvm/Support/Debug.h" 367d696d80409aad20bb5da0fc4eccab941dd371d4Torok Edwin#include "llvm/Support/ErrorHandling.h" 37dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands#include "llvm/Support/MathExtras.h" 3845cfe545ec8177262dabc70580ce05feaa1c3880Chris Lattner#include "llvm/Support/raw_ostream.h" 397971514755a08ec156a1b9c0f7f05d67919c56b7Chris Lattner#include "llvm/ADT/DenseMap.h" 40f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner#include "llvm/ADT/SmallVector.h" 4100755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner#include "llvm/ADT/SmallPtrSet.h" 42033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng#include <map> 433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerusing namespace llvm; 443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// SelectionDAGLegalize - This takes an arbitrary SelectionDAG as input and 473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// hacks on it until the target machine can handle it. This involves 483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating value sizes the machine cannot handle (promoting small sizes to 493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// large sizes or splitting up large values into small values) as well as 503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating operations the machine cannot handle. 513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// This code also does a small amount of optimization and recognition of idioms 533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// as part of its processing. For example, if a target does not support a 543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 'setcc' instruction efficiently, but does support 'brcc' instruction, this 553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// will attempt merge setcc and brc instructions into brcc's. 563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnernamespace { 586726b6d75a8b679068a58cb954ba97cf9d1690baNick Lewyckyclass SelectionDAGLegalize { 593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner TargetLowering &TLI; 603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SelectionDAG &DAG; 6198a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel; 623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 636831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Libcall insertion helpers. 64fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 656831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// LastCALLSEQ_END - This keeps track of the CALLSEQ_END node that has been 666831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// legalized. We use this to ensure that calls are properly serialized 676831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// against each other, including inserted libcalls. 68475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LastCALLSEQ_END; 69fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 706831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// IsLegalizingCall - This member is used *only* for purposes of providing 71fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel /// helpful assertions that a libcall isn't created while another call is 726831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// being legalized (which could lead to non-serialized call sequences). 736831a815999dde4cf801e2076e66b4943964daf2Chris Lattner bool IsLegalizingCall; 74fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner enum LegalizeAction { 7668a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Legal, // The target natively supports this operation. 7768a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Promote, // This operation should be executed in a larger type. 78d74ea2bbd8bb630331f35ead42d385249bd42af8Chris Lattner Expand // Try to expand this to other ops, otherwise use a libcall. 793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner }; 80fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// ValueTypeActions - This is a bitvector that contains two bits for each 823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// value type, where the two bits correspond to the LegalizeAction enum. 833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// This can be queried with "getTypeAction(VT)". 8468a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner TargetLowering::ValueTypeActionImpl ValueTypeActions; 853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// LegalizedNodes - For nodes that are of legal width, and that have more 873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// than one use, this map indicates what regularized operand to use. This 883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// allows us to avoid legalizing the same thing more than once. 89475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue> LegalizedNodes; 903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 91475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void AddLegalizedOperand(SDValue From, SDValue To) { 9269a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(From, To)); 9369a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner // If someone requests legalization of the new node, return itself. 9469a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner if (From != To) 9569a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(To, To)); 968afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner } 978afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner 983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerpublic: 991fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(SelectionDAG &DAG, CodeGenOpt::Level ol); 1003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// getTypeAction - Return how we should legalize values of this type, either 1023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// it is already legal or we need to expand it into multiple registers of 1033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// smaller integer type, or we need to promote it to a larger type. 104e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson LegalizeAction getTypeAction(EVT VT) const { 10523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson return 10623b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson (LegalizeAction)ValueTypeActions.getTypeAction(*DAG.getContext(), VT); 1073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// isTypeLegal - Return true if this type is legal on this target. 1103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 111e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson bool isTypeLegal(EVT VT) const { 1123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return getTypeAction(VT) == Legal; 1133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner void LegalizeDAG(); 1163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 117456a93afcec7740c45cafa8354317f7b17987a6dChris Lattnerprivate: 118c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// LegalizeOp - We know that the specified value has a legal type. 119c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// Recursively ensure that the operands have legal types, then return the 120c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// result. 121475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LegalizeOp(SDValue O); 122fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1237ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue OptimizeFloatStore(StoreSDNode *ST); 1247ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 1256867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// PerformInsertVectorEltInMemory - Some target cannot handle a variable 1266867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 1276867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// is necessary to spill the vector being inserted into to memory, perform 1286867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// the insert there, and then read the result back. 129475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue PerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, 1303f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 1313f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, 1323f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 133826695281344e3a4c4d44d73dd155107aafd689bDan Gohman 1345a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1355a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// performs the same shuffe in terms of order or result bytes, but on a type 1365a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// whose vector element type is narrower than the original shuffle type. 1375a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 138e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl, 1395a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue N1, SDValue N2, 1405a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SmallVectorImpl<int> &Mask) const; 141fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 142c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner bool LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 14300755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo); 1446831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 145e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson void LegalizeSetCCCondCode(EVT VT, SDValue &LHS, SDValue &RHS, SDValue &CC, 146775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DebugLoc dl); 147fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 14847b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman SDValue ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, bool isSigned); 149f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman SDValue ExpandFPLibCall(SDNode *Node, RTLIB::Libcall Call_F32, 150f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, RTLIB::Libcall Call_F80, 151f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128); 1528983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov SDValue ExpandIntLibCall(SDNode *Node, bool isSigned, 1538983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I8, 1548983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I16, 1558983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I32, 1568983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I64, 157f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128); 158475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 159e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue EmitStackConvert(SDValue SrcOp, EVT SlotVT, EVT DestVT, DebugLoc dl); 160475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandBUILD_VECTOR(SDNode *Node); 161475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandSCALAR_TO_VECTOR(SDNode *Node); 1624bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman void ExpandDYNAMIC_STACKALLOC(SDNode *Node, 1634bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results); 1644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue ExpandFCOPYSIGN(SDNode *Node); 165e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue ExpandLegalINT_TO_FP(bool isSigned, SDValue LegalOp, EVT DestVT, 166af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 167e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue PromoteLegalINT_TO_FP(SDValue LegalOp, EVT DestVT, bool isSigned, 168af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 169e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue PromoteLegalFP_TO_INT(SDValue LegalOp, EVT DestVT, bool isSigned, 170af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 171475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1728a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBSWAP(SDValue Op, DebugLoc dl); 1738a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBitCount(unsigned Opc, SDValue Op, DebugLoc dl); 174475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1753d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue ExpandExtractFromVectorThroughStack(SDValue Op); 1767ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue ExpandVectorBuildThroughStack(SDNode* Node); 1778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 1788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void ExpandNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void PromoteNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner}; 1813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1835a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1845a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// performs the same shuffe in terms of order or result bytes, but on a type 1855a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// whose vector element type is narrower than the original shuffle type. 1869008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman/// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 1875a5ca1519e04310f585197c20e7ae584b7f2d11fNate BegemanSDValue 188e50ed30282bb5b4a9ed952580523f2dda16215acOwen AndersonSelectionDAGLegalize::ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl, 1895a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue N1, SDValue N2, 1909008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVectorImpl<int> &Mask) const { 1915a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumMaskElts = VT.getVectorNumElements(); 1925a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumDestElts = NVT.getVectorNumElements(); 1939008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman unsigned NumEltsGrowth = NumDestElts / NumMaskElts; 1949008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1959008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(NumEltsGrowth && "Cannot promote to vector type with fewer elts!"); 1969008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1979008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman if (NumEltsGrowth == 1) 1989008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &Mask[0]); 1999008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 2009008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVector<int, 8> NewMask; 2015a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman for (unsigned i = 0; i != NumMaskElts; ++i) { 2029008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman int Idx = Mask[i]; 2039008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman for (unsigned j = 0; j != NumEltsGrowth; ++j) { 2049008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman if (Idx < 0) 2059008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(-1); 2069008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman else 2079008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(Idx * NumEltsGrowth + j); 2084352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner } 20915684b29552393553524171bff1913e750f390f8Rafael Espindola } 2105a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman assert(NewMask.size() == NumDestElts && "Non-integer NumEltsGrowth?"); 2119008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(TLI.isShuffleMaskLegal(NewMask, NVT) && "Shuffle not legal?"); 2129008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &NewMask[0]); 2134352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 2144352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 2155aa4977fba97e816b5735f0bc53f16a46b24de63Bill WendlingSelectionDAGLegalize::SelectionDAGLegalize(SelectionDAG &dag, 2161fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman CodeGenOpt::Level ol) 217be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling : TLI(dag.getTargetLoweringInfo()), DAG(dag), OptLevel(ol), 2181fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman ValueTypeActions(TLI.getValueTypeActions()) { 219825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE && 2203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Too many value types for ValueTypeActions to hold!"); 2213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAGLegalize::LegalizeDAG() { 2246831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LastCALLSEQ_END = DAG.getEntryNode(); 2256831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = false; 226e5ab34e05d701da042619bf540046efc3c7bc41fMon P Wang 227ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // The legalize process is inherently a bottom-up recursive process (users 228ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // legalize their uses before themselves). Given infinite stack space, we 229ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // could just start legalizing on the root and traverse the whole graph. In 230ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // practice however, this causes us to run out of stack space on large basic 23132fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // blocks. To avoid this problem, compute an ordering of the nodes where each 23232fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // node is only legalized after all of its operands are legalized. 233f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman DAG.AssignTopologicalOrder(); 234f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman for (SelectionDAG::allnodes_iterator I = DAG.allnodes_begin(), 2357896c9f436a4eda5ec15e882a7505ba482a2fcd0Chris Lattner E = prior(DAG.allnodes_end()); I != llvm::next(E); ++I) 236b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(I, 0)); 23732fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner 23832fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // Finally, it's possible the root changed. Get the new root. 239475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue OldRoot = DAG.getRoot(); 24032fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner assert(LegalizedNodes.count(OldRoot) && "Root didn't get legalized?"); 24132fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner DAG.setRoot(LegalizedNodes[OldRoot]); 2423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LegalizedNodes.clear(); 2443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remove dead nodes now. 246190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner DAG.RemoveDeadNodes(); 2473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2496831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 2506831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// FindCallEndFromCallStart - Given a chained node that is part of a call 2516831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_END node that terminates the call sequence. 2526831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallEndFromCallStart(SDNode *Node) { 2536831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_END) 2546831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Node; 2556831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->use_empty()) 2566831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; // No CallSeqEnd 257fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2586831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // The chain is usually at the end. 259475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue TheChain(Node, Node->getNumValues()-1); 260825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) { 2616831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Sometimes it's at the beginning. 262475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, 0); 263825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) { 2646831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Otherwise, hunt for it. 2656831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 1, e = Node->getNumValues(); i != e; ++i) 266825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Node->getValueType(i) == MVT::Other) { 267475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, i); 2686831a815999dde4cf801e2076e66b4943964daf2Chris Lattner break; 2696831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 270fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 271fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, we walked into a node without a chain. 272825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) 2736831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2746831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2756831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 276fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2776831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (SDNode::use_iterator UI = Node->use_begin(), 2786831a815999dde4cf801e2076e66b4943964daf2Chris Lattner E = Node->use_end(); UI != E; ++UI) { 279fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2806831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Make sure to only follow users of our token chain. 2818968450305c28444edc3c272d8752a8db0c2f34aDan Gohman SDNode *User = *UI; 2826831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) 2836831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (User->getOperand(i) == TheChain) 2846831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (SDNode *Result = FindCallEndFromCallStart(User)) 2856831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 2866831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2876831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2886831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 2896831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 290fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// FindCallStartFromCallEnd - Given a chained node that is part of a call 2916831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_START node that initiates the call sequence. 2926831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallStartFromCallEnd(SDNode *Node) { 2936831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(Node && "Didn't find callseq_start for a call??"); 2946831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_START) return Node; 295fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 296825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert(Node->getOperand(0).getValueType() == MVT::Other && 2976831a815999dde4cf801e2076e66b4943964daf2Chris Lattner "Node doesn't have a token chain argument!"); 298ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif return FindCallStartFromCallEnd(Node->getOperand(0).getNode()); 2996831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 3006831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3016831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// LegalizeAllNodesNotLeadingTo - Recursively walk the uses of N, looking to 302fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// see if any uses can reach Dest. If no dest operands can get to dest, 3036831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// legalize them, legalize ourself, and return false, otherwise, return true. 304c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 305c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// Keep track of the nodes we fine that actually do lead to Dest in 306c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// NodesLeadingTo. This avoids retraversing them exponential number of times. 307c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 308c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattnerbool SelectionDAGLegalize::LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 30900755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo) { 3106831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (N == Dest) return true; // N certainly leads to Dest :) 311fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 312c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // If we've already processed this node and it does lead to Dest, there is no 313c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // need to reprocess it. 314c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (NodesLeadingTo.count(N)) return true; 315fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3166831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the first result of this node has been already legalized, then it cannot 3176831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // reach N. 31874807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman if (LegalizedNodes.count(SDValue(N, 0))) return false; 319fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3206831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node has not already been legalized. Check and legalize all 3216831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // operands. If none lead to Dest, then we can legalize this node. 3226831a815999dde4cf801e2076e66b4943964daf2Chris Lattner bool OperandsLeadToDest = false; 3236831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) 3246831a815999dde4cf801e2076e66b4943964daf2Chris Lattner OperandsLeadToDest |= // If an operand leads to Dest, so do we. 325ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif LegalizeAllNodesNotLeadingTo(N->getOperand(i).getNode(), Dest, NodesLeadingTo); 3266831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 327c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (OperandsLeadToDest) { 328c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo.insert(N); 329c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner return true; 330c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 3316831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3326831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node looks safe, legalize it and return false. 333b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(N, 0)); 3346831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return false; 3356831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 3366831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3379f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// ExpandConstantFP - Expands the ConstantFP node to an integer constant or 3389f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// a load from the constant pool. 339475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanstatic SDValue ExpandConstantFP(ConstantFPSDNode *CFP, bool UseCP, 3400d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman SelectionDAG &DAG, const TargetLowering &TLI) { 341004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng bool Extend = false; 34233c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen DebugLoc dl = CFP->getDebugLoc(); 343004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 344004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // If a FP immediate is precise when represented as a float and if the 345004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // target can do an extending load from float to double, we put it into 346004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // the constant pool as a float, even if it's is statically typed as a 347aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // double. This shrinks FP constants and canonicalizes them for targets where 348aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // an FP extending load is the same cost as a normal load (such as on the x87 349aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // fp stack or PPC FP unit). 350e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = CFP->getValueType(0); 3514fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman ConstantFP *LLVMC = const_cast<ConstantFP*>(CFP->getConstantFPValue()); 3529f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng if (!UseCP) { 353825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert((VT == MVT::f64 || VT == MVT::f32) && "Invalid type expansion"); 3547111b02c734c992b8c97d9918118768026dad79eDale Johannesen return DAG.getConstant(LLVMC->getValueAPF().bitcastToAPInt(), 355825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (VT == MVT::f64) ? MVT::i64 : MVT::i32); 356279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng } 357279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng 358e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OrigVT = VT; 359e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SVT = VT; 360825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson while (SVT != MVT::f32) { 361825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SVT = (MVT::SimpleValueType)(SVT.getSimpleVT().SimpleTy - 1); 362ef12057737229452c17983faa20857dba441ef05Evan Cheng if (CFP->isValueValidForType(SVT, CFP->getValueAPF()) && 363ef12057737229452c17983faa20857dba441ef05Evan Cheng // Only do this if the target has a native EXTLOAD instruction from 364ef12057737229452c17983faa20857dba441ef05Evan Cheng // smaller type. 3650329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng TLI.isLoadExtLegal(ISD::EXTLOAD, SVT) && 366aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner TLI.ShouldShrinkFPConstant(OrigVT)) { 36723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *SType = SVT.getTypeForEVT(*DAG.getContext()); 368baf3c404409d5e47b13984a7f95bfbd6d1f2e79eOwen Anderson LLVMC = cast<ConstantFP>(ConstantExpr::getFPTrunc(LLVMC, SType)); 369ef12057737229452c17983faa20857dba441ef05Evan Cheng VT = SVT; 370ef12057737229452c17983faa20857dba441ef05Evan Cheng Extend = true; 371ef12057737229452c17983faa20857dba441ef05Evan Cheng } 372004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng } 373004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 374475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(LLVMC, TLI.getPointerTy()); 3751606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 376ef12057737229452c17983faa20857dba441ef05Evan Cheng if (Extend) 37733c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen return DAG.getExtLoad(ISD::EXTLOAD, dl, 37839355f9fea790c5a1b12ef0fdcfeac3f533232eaDale Johannesen OrigVT, DAG.getEntryNode(), 3793069b8743769527ce7af6cfb6591a2f0fc2faee4Dan Gohman CPIdx, PseudoSourceValue::getConstantPool(), 3801e559443a17d1b335f697551c6263ba60d5dd827David Greene 0, VT, false, false, Alignment); 38133c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen return DAG.getLoad(OrigVT, dl, DAG.getEntryNode(), CPIdx, 3821e559443a17d1b335f697551c6263ba60d5dd827David Greene PseudoSourceValue::getConstantPool(), 0, false, false, 3831e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 384004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng} 385004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 386f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedStore - Expands an unaligned store to 2 half-size stores. 387f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 388475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedStore(StoreSDNode *ST, SelectionDAG &DAG, 3890d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman const TargetLowering &TLI) { 390475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = ST->getChain(); 391475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = ST->getBasePtr(); 392475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Val = ST->getValue(); 393e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Val.getValueType(); 394907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen int Alignment = ST->getAlignment(); 395907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen int SVOffset = ST->getSrcValueOffset(); 396bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = ST->getDebugLoc(); 39783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ST->getMemoryVT().isFloatingPoint() || 39883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands ST->getMemoryVT().isVector()) { 39923b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT intVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits()); 40005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 40105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a bitconvert of the value to the integer type of the 40205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // same size, then a (misaligned) int store. 40305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // FIXME: Does not handle truncating floating point stores! 404bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::BIT_CONVERT, dl, intVT, Val); 405bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getStore(Chain, dl, Result, Ptr, ST->getSrcValue(), 4061e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, ST->isVolatile(), ST->isNonTemporal(), 4071e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 40805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } else { 40905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do a (aligned) store to a stack slot, then copy from the stack slot 41005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // to the final destination using (unaligned) integer loads and stores. 411e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT StoredVT = ST->getMemoryVT(); 412e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT RegVT = 41323b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson TLI.getRegisterType(*DAG.getContext(), EVT::getIntegerVT(*DAG.getContext(), StoredVT.getSizeInBits())); 41405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned StoredBytes = StoredVT.getSizeInBits() / 8; 41505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned RegBytes = RegVT.getSizeInBits() / 8; 41605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned NumRegs = (StoredBytes + RegBytes - 1) / RegBytes; 41705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 418fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Make sure the stack slot is also aligned for the register type. 419fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands SDValue StackPtr = DAG.CreateStackTemporary(StoredVT, RegVT); 420fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 421fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Perform the original store, only redirected to the stack slot. 422fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Store = DAG.getTruncStore(Chain, dl, 4231e559443a17d1b335f697551c6263ba60d5dd827David Greene Val, StackPtr, NULL, 0, StoredVT, 4241e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 42505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 42605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SmallVector<SDValue, 8> Stores; 42705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned Offset = 0; 42805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 42905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do all but one copies using the full register width. 43005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands for (unsigned i = 1; i < NumRegs; i++) { 43105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Load one integer register's worth from the stack slot. 4321e559443a17d1b335f697551c6263ba60d5dd827David Greene SDValue Load = DAG.getLoad(RegVT, dl, Store, StackPtr, NULL, 0, 4331e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 43405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Store it to the final location. Remember the store. 435bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, Ptr, 43605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->getSrcValue(), SVOffset + Offset, 4371e559443a17d1b335f697551c6263ba60d5dd827David Greene ST->isVolatile(), ST->isNonTemporal(), 43805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 43905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Increment the pointers. 44005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Offset += RegBytes; 441bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 44205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Increment); 443bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 44405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 44505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 446fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // The last store may be partial. Do a truncating store. On big-endian 447fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // machines this requires an extending load from the stack slot to ensure 448fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // that the bits are in the right place. 44923b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 8 * (StoredBytes - Offset)); 450fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 451fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Load from the stack slot. 452bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Store, StackPtr, 4531e559443a17d1b335f697551c6263ba60d5dd827David Greene NULL, 0, MemVT, false, false, 0); 45405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 455bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, Ptr, 45605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->getSrcValue(), SVOffset + Offset, 457fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MemVT, ST->isVolatile(), 4581e559443a17d1b335f697551c6263ba60d5dd827David Greene ST->isNonTemporal(), 45905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 46005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The order of the stores doesn't matter - say it with a TokenFactor. 461825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 46205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Stores.size()); 46305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 464907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 46583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(ST->getMemoryVT().isInteger() && 46683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands !ST->getMemoryVT().isVector() && 467907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen "Unaligned store of unknown type."); 468f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Get the half-size VT 469bceddbdc919fc2ca7bc8c3911586ba93367686f0Ken Dyck EVT NewStoredVT = ST->getMemoryVT().getHalfSizedIntegerVT(*DAG.getContext()); 47083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands int NumBits = NewStoredVT.getSizeInBits(); 471f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int IncrementSize = NumBits / 8; 472f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 473f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Divide the stored value in two parts. 474475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 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, 481f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->getSrcValue(), SVOffset, 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, 487f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->getSrcValue(), SVOffset + IncrementSize, 4881e559443a17d1b335f697551c6263ba60d5dd827David Greene NewStoredVT, ST->isVolatile(), ST->isNonTemporal(), 4891e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 490f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 491825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson 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. 495f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 496475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedLoad(LoadSDNode *LD, SelectionDAG &DAG, 497e9530ecae4897fe8157bd4d7616043bd8c0484e2Dan Gohman const TargetLowering &TLI) { 498f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int SVOffset = LD->getSrcValueOffset(); 499475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = LD->getChain(); 500475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = LD->getBasePtr(); 501e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = LD->getValueType(0); 502e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT LoadedVT = LD->getMemoryVT(); 503bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = LD->getDebugLoc(); 50483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (VT.isFloatingPoint() || VT.isVector()) { 50523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT intVT = EVT::getIntegerVT(*DAG.getContext(), LoadedVT.getSizeInBits()); 50605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 50705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a (misaligned) integer load of the same size, 50805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // then bitconvert to floating point or vector. 509bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue newLoad = DAG.getLoad(intVT, dl, Chain, Ptr, LD->getSrcValue(), 51005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset, LD->isVolatile(), 5111e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), LD->getAlignment()); 512bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::BIT_CONVERT, dl, LoadedVT, newLoad); 51305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (VT.isFloatingPoint() && LoadedVT != VT) 514bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, VT, Result); 515907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen 51605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Ops[] = { Result, Chain }; 517bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 51805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } else { 51905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Copy the value to a (aligned) stack slot using (unaligned) integer 52005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // loads and stores, then do a (aligned) load from the stack slot. 52123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RegVT = TLI.getRegisterType(*DAG.getContext(), intVT); 52205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned LoadedBytes = LoadedVT.getSizeInBits() / 8; 52305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned RegBytes = RegVT.getSizeInBits() / 8; 52405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned NumRegs = (LoadedBytes + RegBytes - 1) / RegBytes; 52505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 526fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Make sure the stack slot is also aligned for the register type. 527fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands SDValue StackBase = DAG.CreateStackTemporary(LoadedVT, RegVT); 528fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 52905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 53005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SmallVector<SDValue, 8> Stores; 53105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue StackPtr = StackBase; 53205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned Offset = 0; 53305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 53405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do all but one copies using the full register width. 53505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands for (unsigned i = 1; i < NumRegs; i++) { 53605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Load one integer register's worth from the original location. 537bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getLoad(RegVT, dl, Chain, Ptr, LD->getSrcValue(), 53805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset + Offset, LD->isVolatile(), 5391e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), 54005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(LD->getAlignment(), Offset)); 54105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 542bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, StackPtr, 5431e559443a17d1b335f697551c6263ba60d5dd827David Greene NULL, 0, false, false, 0)); 54405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Increment the pointers. 54505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Offset += RegBytes; 546bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 547bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 54805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Increment); 54905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 55005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 55105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The last copy may be partial. Do an extending load. 55223b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 8 * (LoadedBytes - Offset)); 553bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Chain, Ptr, 55405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands LD->getSrcValue(), SVOffset + Offset, 555fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MemVT, LD->isVolatile(), 5561e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), 55705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(LD->getAlignment(), Offset)); 55805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 559fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // On big-endian machines this requires a truncating store to ensure 560fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // that the bits end up in the right place. 561bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, StackPtr, 5621e559443a17d1b335f697551c6263ba60d5dd827David Greene NULL, 0, MemVT, false, false, 0)); 56305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 56405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The order of the stores doesn't matter - say it with a TokenFactor. 565825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 56605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Stores.size()); 56705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 56805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Finally, perform the original load only redirected to the stack slot. 569bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Load = DAG.getExtLoad(LD->getExtensionType(), dl, VT, TF, StackBase, 5701e559443a17d1b335f697551c6263ba60d5dd827David Greene NULL, 0, LoadedVT, false, false, 0); 57105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 57205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Callers expect a MERGE_VALUES node. 57305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Ops[] = { Load, TF }; 574bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 57505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 576907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 57783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(LoadedVT.isInteger() && !LoadedVT.isVector() && 578e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner "Unaligned load of unsupported type."); 579e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner 5808155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // Compute the new VT that is half the size of the old one. This is an 5818155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // integer MVT. 58283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned NumBits = LoadedVT.getSizeInBits(); 583e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewLoadedVT; 58423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson NewLoadedVT = EVT::getIntegerVT(*DAG.getContext(), NumBits/2); 585e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner NumBits >>= 1; 586fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 587e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned Alignment = LD->getAlignment(); 588e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned IncrementSize = NumBits / 8; 589f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ISD::LoadExtType HiExtType = LD->getExtensionType(); 590f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 591f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If the original load is NON_EXTLOAD, the hi part load must be ZEXTLOAD. 592f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (HiExtType == ISD::NON_EXTLOAD) 593f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio HiExtType = ISD::ZEXTLOAD; 594f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 595f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Load the value in two parts 596475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 597f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (TLI.isLittleEndian()) { 598bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getSrcValue(), 5991e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, NewLoadedVT, LD->isVolatile(), 6001e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), Alignment); 601bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 602f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 603bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getSrcValue(), 604f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset + IncrementSize, NewLoadedVT, LD->isVolatile(), 6051e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), MinAlign(Alignment, IncrementSize)); 606f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 607bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getSrcValue(), 6081e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, NewLoadedVT, LD->isVolatile(), 6091e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), Alignment); 610bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 611f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 612bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getSrcValue(), 613f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset + IncrementSize, NewLoadedVT, LD->isVolatile(), 6141e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), MinAlign(Alignment, IncrementSize)); 615f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 616f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 617f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // aggregate the two parts 618475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 619bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::SHL, dl, VT, Hi, ShiftAmount); 620bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::OR, dl, VT, Result, Lo); 621f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 622825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 623f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Hi.getValue(1)); 624f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 625475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Result, TF }; 626bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 627f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 628912095becac923ff614d7b07728eb345ada67765Evan Cheng 6296867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// PerformInsertVectorEltInMemory - Some target cannot handle a variable 6306867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 6316867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// is necessary to spill the vector being inserted into to memory, perform 6326867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// the insert there, and then read the result back. 633475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize:: 634bb5da918545efb54857a09c983a5a7f22a7e04d4Dale JohannesenPerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, SDValue Idx, 635bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl) { 636475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1 = Vec; 637475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp2 = Val; 638475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = Idx; 639fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 6406867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // If the target doesn't support this, we have to spill the input vector 6416867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // to a temporary stack slot, update the element, then reload it. This is 6426867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // badness. We could also load the value into a vector register (either 6436867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // with a "move to register" or "extload into register" instruction, then 6446867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // permute it into place, if the idx is a constant and if the idx is 6456867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // supported by the target. 646e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp1.getValueType(); 647e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 648e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT IdxVT = Tmp3.getValueType(); 649e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PtrVT = TLI.getPointerTy(); 650475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(VT); 6516867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 652ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex(); 653ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 6546867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the vector. 655bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Tmp1, StackPtr, 6561e559443a17d1b335f697551c6263ba60d5dd827David Greene PseudoSourceValue::getFixedStack(SPFI), 0, 6571e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 6586867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 6596867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Truncate or zero extend offset to target pointer type. 6608e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands unsigned CastOpc = IdxVT.bitsGT(PtrVT) ? ISD::TRUNCATE : ISD::ZERO_EXTEND; 661bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(CastOpc, dl, PtrVT, Tmp3); 6626867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Add the offset to the index. 663aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned EltSize = EltVT.getSizeInBits()/8; 664bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(ISD::MUL, dl, IdxVT, Tmp3,DAG.getConstant(EltSize, IdxVT)); 665bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue StackPtr2 = DAG.getNode(ISD::ADD, dl, IdxVT, Tmp3, StackPtr); 6666867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the scalar value. 667bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ch = DAG.getTruncStore(Ch, dl, Tmp2, StackPtr2, 6681e559443a17d1b335f697551c6263ba60d5dd827David Greene PseudoSourceValue::getFixedStack(SPFI), 0, EltVT, 6691e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 6706867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Load the updated vector. 671bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getLoad(VT, dl, Ch, StackPtr, 6721e559443a17d1b335f697551c6263ba60d5dd827David Greene PseudoSourceValue::getFixedStack(SPFI), 0, 6731e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 6746867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman} 6756867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 676e9f1015d1f184a51aaadfd03be0846bd5e7d08a2Mon P Wang 6773f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanSDValue SelectionDAGLegalize:: 6783f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, SDValue Idx, DebugLoc dl) { 6793f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (ConstantSDNode *InsertPos = dyn_cast<ConstantSDNode>(Idx)) { 6803f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // SCALAR_TO_VECTOR requires that the type of the value being inserted 6813f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // match the element type of the vector being created, except for 6823f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // integers in which case the inserted value can be over width. 683e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = Vec.getValueType().getVectorElementType(); 6843f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (Val.getValueType() == EltVT || 6853f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman (EltVT.isInteger() && Val.getValueType().bitsGE(EltVT))) { 6863f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ScVec = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, 6873f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Vec.getValueType(), Val); 6883f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6893f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman unsigned NumElts = Vec.getValueType().getVectorNumElements(); 6903f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // We generate a shuffle of InVec and ScVec, so the shuffle mask 6913f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // should be 0,1,2,3,4,5... with the appropriate element replaced with 6923f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // elt 0 of the RHS. 6933f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SmallVector<int, 8> ShufOps; 6943f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0; i != NumElts; ++i) 6953f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman ShufOps.push_back(i != InsertPos->getZExtValue() ? i : NumElts); 6963f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6973f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return DAG.getVectorShuffle(Vec.getValueType(), dl, Vec, ScVec, 6983f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman &ShufOps[0]); 6993f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 7003f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 7013f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return PerformInsertVectorEltInMemory(Vec, Val, Idx, dl); 7023f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman} 7033f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 7047ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::OptimizeFloatStore(StoreSDNode* ST) { 7057ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Turn 'store float 1.0, Ptr' -> 'store int 0x12345678, Ptr' 7067ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: We shouldn't do this for TargetConstantFP's. 7077ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: move this to the DAG Combiner! Note that we can't regress due 7087ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // to phase ordering between legalized code and the dag combiner. This 7097ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // probably means that we need to integrate dag combiner and legalizer 7107ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // together. 7117ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We generally can't do this one for long doubles. 7127ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp1 = ST->getChain(); 7137ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp2 = ST->getBasePtr(); 7147ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp3; 7157ef3d178660b82d1571757e49f44b004d772a116Eli Friedman int SVOffset = ST->getSrcValueOffset(); 7167ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Alignment = ST->getAlignment(); 7177ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bool isVolatile = ST->isVolatile(); 7181e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = ST->isNonTemporal(); 7197ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = ST->getDebugLoc(); 7207ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(ST->getValue())) { 721825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (CFP->getValueType(0) == MVT::f32 && 722825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson getTypeAction(MVT::i32) == Legal) { 7237ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF(). 7247ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bitcastToAPInt().zextOrTrunc(32), 725825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::i32); 7267ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 7271e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, isVolatile, isNonTemporal, Alignment); 728825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (CFP->getValueType(0) == MVT::f64) { 7297ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // If this target supports 64-bit registers, do a single 64-bit store. 730825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (getTypeAction(MVT::i64) == Legal) { 7317ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF().bitcastToAPInt(). 732825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson zextOrTrunc(64), MVT::i64); 7337ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 7341e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, isVolatile, isNonTemporal, Alignment); 735825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (getTypeAction(MVT::i32) == Legal && !ST->isVolatile()) { 7367ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, if the target supports 32-bit registers, use 2 32-bit 7377ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // stores. If the target supports neither 32- nor 64-bits, this 7387ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // xform is certainly not worth it. 7397ef3d178660b82d1571757e49f44b004d772a116Eli Friedman const APInt &IntVal =CFP->getValueAPF().bitcastToAPInt(); 740825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Lo = DAG.getConstant(APInt(IntVal).trunc(32), MVT::i32); 741825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Hi = DAG.getConstant(IntVal.lshr(32).trunc(32), MVT::i32); 7427ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (TLI.isBigEndian()) std::swap(Lo, Hi); 7437ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 7447ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Lo = DAG.getStore(Tmp1, dl, Lo, Tmp2, ST->getSrcValue(), 7451e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, isVolatile, isNonTemporal, Alignment); 7467ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 7477ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DAG.getIntPtrConstant(4)); 7487ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Hi = DAG.getStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), SVOffset+4, 7491e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, MinAlign(Alignment, 4U)); 7507ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 751825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 7527ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7537ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7547ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7557ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return SDValue(); 7567ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 7577ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 758a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// LegalizeOp - We know that the specified value has a legal type, and 759a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// that its operands are legal. Now ensure that the operation itself 760a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// is legal, recursively ensuring that the operands' operations remain 761a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// legal. 762475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) { 76309ec1b058331aadb29a348091611d23892b5c492Chris Lattner if (Op.getOpcode() == ISD::TargetConstant) // Allow illegal target nodes. 76409ec1b058331aadb29a348091611d23892b5c492Chris Lattner return Op; 765fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 766ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif SDNode *Node = Op.getNode(); 7677d2ad624fa749a6d3edac0d94e9c107989c16304Dale Johannesen DebugLoc dl = Node->getDebugLoc(); 768e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner 7691fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 7701fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman assert(getTypeAction(Node->getValueType(i)) == Legal && 7711fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7721fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman 7731fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 7741fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman assert((isTypeLegal(Node->getOperand(i).getValueType()) || 7751fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman Node->getOperand(i).getOpcode() == ISD::TargetConstant) && 7761fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 77845982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 77945982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 780475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 781e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (I != LegalizedNodes.end()) return I->second; 7823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 783475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 784475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result = Op; 785456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner bool isCustom = false; 786fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 7878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Figure out the correct action; the way to query this varies by opcode 7888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::LegalizeAction Action; 7898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman bool SimpleFinishLegalizing = true; 7903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 7918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_W_CHAIN: 7928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_WO_CHAIN: 7938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_VOID: 7948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAARG: 7958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STACKSAVE: 796825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Action = TLI.getOperationAction(Node->getOpcode(), MVT::Other); 7978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 7988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 7998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 8008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 8018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 8028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType()); 8038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: 8058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 806e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT InnerType = cast<VTSDNode>(Node->getOperand(1))->getVT(); 8078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), InnerType); 8088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 8103be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SELECT_CC: 8113be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SETCC: 8123be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::BR_CC: { 8133be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CCOperand = Node->getOpcode() == ISD::SELECT_CC ? 4 : 8143be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getOpcode() == ISD::SETCC ? 2 : 1; 8153be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CompareOperand = Node->getOpcode() == ISD::BR_CC ? 2 : 0; 816e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(CompareOperand).getValueType(); 8173be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman ISD::CondCode CCCode = 8183be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman cast<CondCodeSDNode>(Node->getOperand(CCOperand))->get(); 8193be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getCondCodeAction(CCCode, OpVT); 8203be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Action == TargetLowering::Legal) { 8213be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Node->getOpcode() == ISD::SELECT_CC) 8223be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 8233be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getValueType(0)); 8243be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman else 8253be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), OpVT); 8263be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8273be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 8283be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::LOAD: 8308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STORE: 831ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: Model these properly. LOAD and STORE are complicated, and 832ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // STORE expects the unlegalized operand in some cases. 833ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 834ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_START: 8368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_END: 837ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: This shouldn't be necessary. These nodes have special properties 838ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // dealing with the recursive nature of legalization. Removing this 839ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // special case should be done as part of making LegalizeDAG non-recursive. 840ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 841ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: 8438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 8448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SADDO: 8458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SSUBO: 8468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UADDO: 8478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::USUBO: 8488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SMULO: 8498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UMULO: 8508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FPOWI: 8518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 8528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 8538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 854f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // These operations lie about being legal: when they claim to be legal, 855f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // they should actually be expanded. 8568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Action == TargetLowering::Legal) 8588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Expand; 8598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAMPOLINE: 8618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 8628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 8634bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // These operations lie about being legal: when they claim to be legal, 8644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // they should actually be custom-lowered. 8654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Action == TargetLowering::Legal) 8674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TargetLowering::Custom; 8688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BUILD_VECTOR: 870b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // A weird case: legalization for BUILD_VECTOR never legalizes the 871b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // operands! 872b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // FIXME: This really sucks... changing it isn't semantically incorrect, 873b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // but it massively pessimizes the code for floating-point BUILD_VECTORs 874b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // because ConstantFP operands get legalized into constant pool loads 875b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // before the BUILD_VECTOR code can see them. It doesn't usually bite, 876b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // though, because BUILD_VECTORS usually get lowered into other nodes 877b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // which get legalized properly. 8788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SimpleFinishLegalizing = false; 879948c1b1cda280c6428dbeaa03a6c2c559dbb93f4Chris Lattner break; 8803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 881d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner if (Node->getOpcode() >= ISD::BUILTIN_OP_END) { 8828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Legal; 8838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 8848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 8868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 888d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner 8898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (SimpleFinishLegalizing) { 8908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVector<SDValue, 8> Ops, ResultVals; 8918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 8928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops.push_back(LegalizeOp(Node->getOperand(i))); 8938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 8948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: break; 8958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR: 8968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRIND: 8978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_JT: 8988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_CC: 8998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRCOND: 9008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Branches tweak the chain to include LastCALLSEQ_END 901825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ops[0] = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Ops[0], 9028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END); 9038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[0] = LegalizeOp(Ops[0]); 9048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 9058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SHL: 9078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRL: 9088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRA: 9098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTL: 9108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTR: 9118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Legalizing shifts/rotates requires adjusting the shift amount 9128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // to the appropriate width. 9138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!Ops[1].getValueType().isVector()) 9148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[1] = LegalizeOp(DAG.getShiftAmountOperand(Ops[1])); 9158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 916db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SRL_PARTS: 917db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SRA_PARTS: 918db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SHL_PARTS: 919db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman // Legalizing shifts/rotates requires adjusting the shift amount 920db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman // to the appropriate width. 921db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman if (!Ops[2].getValueType().isVector()) 922db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman Ops[2] = LegalizeOp(DAG.getShiftAmountOperand(Ops[2])); 9232c9489d6e96d99f77b6c31919805b5e61954deb2Dan Gohman break; 9248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Result = DAG.UpdateNodeOperands(Result.getValue(0), Ops.data(), 9278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops.size()); 9288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Action) { 9298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Legal: 930d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 9318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Result.getValue(i)); 9328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Custom: 9348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FIXME: The handling for custom lowering with multiple results is 9358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // a complete mess. 9368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = TLI.LowerOperation(Result, DAG); 9378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Tmp1.getNode()) { 9388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) { 9398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (e == 1) 9408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1); 9418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 9428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1.getValue(i)); 9438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FALL THROUGH 9488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Expand: 9498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ExpandNode(Result.getNode(), ResultVals); 9508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Promote: 9528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman PromoteNode(Result.getNode(), ResultVals); 9538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!ResultVals.empty()) { 9568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = ResultVals.size(); i != e; ++i) { 9578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (ResultVals[i] != SDValue(Node, i)) 9588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals[i] = LegalizeOp(ResultVals[i]); 9598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman AddLegalizedOperand(SDValue(Node, i), ResultVals[i]); 9608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman return ResultVals[Op.getResNo()]; 962d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner } 9638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 9668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: 967e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#ifndef NDEBUG 968993aacedfdc3f156f667b4efa280ee79eab3b898David Greene dbgs() << "NODE: "; 969993aacedfdc3f156f667b4efa280ee79eab3b898David Greene Node->dump( &DAG); 970993aacedfdc3f156f667b4efa280ee79eab3b898David Greene dbgs() << "\n"; 971e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#endif 972c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Do not know how to legalize this operator!"); 97398ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman 974b2827b0901162169bb2692b77a839c9767849134Chris Lattner case ISD::BUILD_VECTOR: 975b2827b0901162169bb2692b77a839c9767849134Chris Lattner switch (TLI.getOperationAction(ISD::BUILD_VECTOR, Node->getValueType(0))) { 976c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 9772332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner case TargetLowering::Custom: 9782332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Tmp3 = TLI.LowerOperation(Result, DAG); 979ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()) { 9802332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Result = Tmp3; 9812332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 9822332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 9832332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner // FALLTHROUGH 984ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner case TargetLowering::Expand: 985ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandBUILD_VECTOR(Result.getNode()); 986b2827b0901162169bb2692b77a839c9767849134Chris Lattner break; 9872332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 9882332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 9896831a815999dde4cf801e2076e66b4943964daf2Chris Lattner case ISD::CALLSEQ_START: { 9906831a815999dde4cf801e2076e66b4943964daf2Chris Lattner SDNode *CallEnd = FindCallEndFromCallStart(Node); 991fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 9926831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Recursively Legalize all of the inputs of the call end that do not lead 9936831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // to this call start. This ensures that any libcalls that need be inserted 9946831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // are inserted *before* the CALLSEQ_START. 99500755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner {SmallPtrSet<SDNode*, 32> NodesLeadingTo; 9966831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = CallEnd->getNumOperands(); i != e; ++i) 997ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif LegalizeAllNodesNotLeadingTo(CallEnd->getOperand(i).getNode(), Node, 998c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo); 999c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 10006831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 10016831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Now that we legalized all of the inputs (which may have inserted 10026831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // libcalls) create the new CALLSEQ_START node. 10036831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 10046831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 10056831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Merge in the last call, to ensure that this call start after the last 10066831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // call ended. 1007c5d7d7c715f7b7a4eeea1ceaafefc3d1d6df2addChris Lattner if (LastCALLSEQ_END.getOpcode() != ISD::EntryToken) { 1008825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 1009ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp1, LastCALLSEQ_END); 1010b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner Tmp1 = LegalizeOp(Tmp1); 1011b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner } 1012fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10136831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Do not try to legalize the target-specific arguments (#1+). 10146831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Tmp1 != Node->getOperand(0)) { 1015475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 10166831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Ops[0] = Tmp1; 1017f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 10186831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1019fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10206831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Remember that the CALLSEQ_START is legalized. 10214b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(0), Result); 10224b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) // If this has a flag result, remember it. 10234b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 1024fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10256831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Now that the callseq_start and all of the non-call nodes above this call 1026fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // sequence have been legalized, legalize the call itself. During this 10276831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // process, no libcalls can/will be inserted, guaranteeing that no calls 10286831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // can overlap. 10296831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "Inconsistent sequentialization of calls!"); 10306831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Note that we are selecting this call! 1031475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LastCALLSEQ_END = SDValue(CallEnd, 0); 10326831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = true; 1033fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10346831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call, starting from the CALLSEQ_END. 10356831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(LastCALLSEQ_END); 10366831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "CALLSEQ_END should have cleared this!"); 10376831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 10386831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 103916cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner case ISD::CALLSEQ_END: 10406831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the CALLSEQ_START node hasn't been legalized first, legalize it. This 10416831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // will cause this node to be legalized as well as handling libcalls right. 1042ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (LastCALLSEQ_END.getNode() != Node) { 1043475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LegalizeOp(SDValue(FindCallStartFromCallEnd(Node), 0)); 1044475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 10456831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(I != LegalizedNodes.end() && 10466831a815999dde4cf801e2076e66b4943964daf2Chris Lattner "Legalizing the call start should have legalized this node!"); 10476831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return I->second; 10486831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1049fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1050fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, the call start has been legalized and everything is going 10516831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // according to plan. Just legalize ourselves normally here. 10523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 105370814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // Do not try to legalize the target-specific arguments (#1+), except for 105470814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // an optional flag input. 1055825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Node->getOperand(Node->getNumOperands()-1).getValueType() != MVT::Flag){ 105670814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0)) { 1057475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 105870814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 1059f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 106070814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 106170814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } else { 106270814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(Node->getNumOperands()-1)); 106370814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0) || 106470814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 != Node->getOperand(Node->getNumOperands()-1)) { 1065475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 106670814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 106770814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops.back() = Tmp2; 1068f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 106970814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 10706a5428934ba6159c1acc541944332e51a6cfa59aChris Lattner } 10714b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner assert(IsLegalizingCall && "Call sequence imbalance between start/end?"); 10726831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // This finishes up call legalization. 10736831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = false; 1074fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10754b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner // If the CALLSEQ_END node has a flag, remember that we legalized it. 1076475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Result.getValue(0)); 10774b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) 1078475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Result.getValue(1)); 107999a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Result.getValue(Op.getResNo()); 1080f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::LOAD: { 1081466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng LoadSDNode *LD = cast<LoadSDNode>(Node); 1082466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = LegalizeOp(LD->getChain()); // Legalize the chain. 1083466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp2 = LegalizeOp(LD->getBasePtr()); // Legalize the base pointer. 10842d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 1085466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng ISD::LoadExtType ExtType = LD->getExtensionType(); 1086466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng if (ExtType == ISD::NON_EXTLOAD) { 1087e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1088466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, LD->getOffset()); 1089466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = Result.getValue(0); 1090466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = Result.getValue(1); 1091fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1092466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng switch (TLI.getOperationAction(Node->getOpcode(), VT)) { 1093c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 1094f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1095f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned load and the target doesn't support it, 1096f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1097bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) { 1098e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = LD->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1099e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 1100f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (LD->getAlignment() < ABIAlignment){ 1101debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 1102debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson DAG, TLI); 1103f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp3 = Result.getOperand(0); 1104f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp4 = Result.getOperand(1); 1105907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp3 = LegalizeOp(Tmp3); 1106907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp4 = LegalizeOp(Tmp4); 1107f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1108f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1109f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 1110466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Custom: 1111466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = TLI.LowerOperation(Tmp3, DAG); 1112ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) { 1113466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = LegalizeOp(Tmp1); 1114466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1115466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1116466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1117466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Promote: { 1118466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Only promote a load of vector type to another. 111983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Cannot promote this load!"); 1120466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Change base type to a different vector type. 1121e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), VT); 1122466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng 1123ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp1 = DAG.getLoad(NVT, dl, Tmp1, Tmp2, LD->getSrcValue(), 1124d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman LD->getSrcValueOffset(), 11251e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isVolatile(), LD->isNonTemporal(), 11261e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->getAlignment()); 1127b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen Tmp3 = LegalizeOp(DAG.getNode(ISD::BIT_CONVERT, dl, VT, Tmp1)); 112841f6cbbeb21d7d4376b8c0302b9766c3e43be5f2Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1129466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1130f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 1131466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1132fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Since loads produce two values, make sure to remember that we 1133466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // legalized both of them. 1134475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp3); 1135475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp4); 113699a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Op.getResNo() ? Tmp4 : Tmp3; 1137466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } else { 1138e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SrcVT = LD->getMemoryVT(); 113983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SrcWidth = SrcVT.getSizeInBits(); 1140f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands int SVOffset = LD->getSrcValueOffset(); 1141f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned Alignment = LD->getAlignment(); 1142f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands bool isVolatile = LD->isVolatile(); 11431e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = LD->isNonTemporal(); 1144f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 114583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (SrcWidth != SrcVT.getStoreSizeInBits() && 1146f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Some targets pretend to have an i1 loading operation, and actually 1147f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // load an i8. This trick is correct for ZEXTLOAD because the top 7 1148f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // bits are guaranteed to be zero; it helps the optimizers understand 1149f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // that these bits are zero. It is also useful for EXTLOAD, since it 1150f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // tells the optimizers that those bits are undefined. It would be 1151f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // nice to have an effective generic way of getting these benefits... 1152f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Until such a way is found, don't insist on promoting i1 here. 1153825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (SrcVT != MVT::i1 || 1154825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson TLI.getLoadExtAction(ExtType, MVT::i1) == TargetLowering::Promote)) { 1155f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Promote to a byte-sized load if not loading an integral number of 1156f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // bytes. For example, promote EXTLOAD:i20 -> EXTLOAD:i24. 115783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned NewWidth = SrcVT.getStoreSizeInBits(); 115823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = EVT::getIntegerVT(*DAG.getContext(), NewWidth); 1159475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch; 1160f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1161f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // The extra bits are guaranteed to be zero, since we stored them that 1162f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // way. A zext load from NVT thus automatically gives zext from SrcVT. 1163f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1164f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ISD::LoadExtType NewExtType = 1165f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ExtType == ISD::ZEXTLOAD ? ISD::ZEXTLOAD : ISD::EXTLOAD; 1166f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1167ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getExtLoad(NewExtType, dl, Node->getValueType(0), 1168f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1, Tmp2, LD->getSrcValue(), SVOffset, 11691e559443a17d1b335f697551c6263ba60d5dd827David Greene NVT, isVolatile, isNonTemporal, Alignment); 1170f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1171f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Ch = Result.getValue(1); // The chain. 1172f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1173f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (ExtType == ISD::SEXTLOAD) 1174f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Having the top bits zero doesn't help when sign extending. 1175fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 1176ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), 1177f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result, DAG.getValueType(SrcVT)); 1178f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands else if (ExtType == ISD::ZEXTLOAD || NVT == Result.getValueType()) 1179f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // All the top bits are guaranteed to be zero - inform the optimizers. 1180fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::AssertZext, dl, 1181ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), Result, 1182f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getValueType(SrcVT)); 1183f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1184f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); 1185f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Ch); 1186f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else if (SrcWidth & (SrcWidth - 1)) { 1187f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // If not loading a power-of-2 number of bits, expand as two loads. 1188bceddbdc919fc2ca7bc8c3911586ba93367686f0Ken Dyck assert(!SrcVT.isVector() && "Unsupported extload!"); 1189f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned RoundWidth = 1 << Log2_32(SrcWidth); 1190f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(RoundWidth < SrcWidth); 1191f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned ExtraWidth = SrcWidth - RoundWidth; 1192f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(ExtraWidth < RoundWidth); 1193f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 1194f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands "Load size not an integral number of bytes!"); 119523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 119623b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 1197475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi, Ch; 1198f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned IncrementSize; 1199f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1200f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (TLI.isLittleEndian()) { 1201f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // EXTLOAD:i24 -> ZEXTLOAD:i16 | (shl EXTLOAD@+2:i8, 16) 1202f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the bottom RoundWidth bits. 1203ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, 1204ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Tmp1, Tmp2, 1205f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset, RoundVT, isVolatile, 12061e559443a17d1b335f697551c6263ba60d5dd827David Greene isNonTemporal, Alignment); 1207f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1208f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the remaining ExtraWidth bits. 1209f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands IncrementSize = RoundWidth / 8; 1210ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 1211f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getIntPtrConstant(IncrementSize)); 1212ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2, 1213f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset + IncrementSize, 12141e559443a17d1b335f697551c6263ba60d5dd827David Greene ExtraVT, isVolatile, isNonTemporal, 1215f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands MinAlign(Alignment, IncrementSize)); 1216f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1217f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Build a factor node to remember that this load is independent of the 1218f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // other one. 1219825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 1220f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Hi.getValue(1)); 1221f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1222f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Move the top bits to the right place. 1223ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 1224f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getConstant(RoundWidth, TLI.getShiftAmountTy())); 1225f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1226f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Join the hi and lo parts. 1227ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 1228f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 1229f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Big endian - avoid unaligned loads. 1230f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // EXTLOAD:i24 -> (shl EXTLOAD:i16, 8) | ZEXTLOAD@+2:i8 1231f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the top RoundWidth bits. 1232ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2, 1233f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset, RoundVT, isVolatile, 12341e559443a17d1b335f697551c6263ba60d5dd827David Greene isNonTemporal, Alignment); 1235f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1236f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the remaining ExtraWidth bits. 1237f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands IncrementSize = RoundWidth / 8; 1238ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 1239f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getIntPtrConstant(IncrementSize)); 1240fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, 1241ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Tmp1, Tmp2, 1242f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset + IncrementSize, 12431e559443a17d1b335f697551c6263ba60d5dd827David Greene ExtraVT, isVolatile, isNonTemporal, 1244f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands MinAlign(Alignment, IncrementSize)); 1245f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1246f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Build a factor node to remember that this load is independent of the 1247f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // other one. 1248825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 1249f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Hi.getValue(1)); 1250f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1251f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Move the top bits to the right place. 1252ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 1253f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy())); 1254f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1255f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Join the hi and lo parts. 1256ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 1257f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1258f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1259f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); 1260f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Ch); 1261f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else { 12620329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng switch (TLI.getLoadExtAction(ExtType, SrcVT)) { 1263c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 1264f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Custom: 1265f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands isCustom = true; 1266f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // FALLTHROUGH 1267f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Legal: 1268f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, LD->getOffset()); 1269f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = Result.getValue(0); 1270f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = Result.getValue(1); 1271f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1272f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (isCustom) { 1273f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp3 = TLI.LowerOperation(Result, DAG); 1274ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()) { 1275f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Tmp3); 1276f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Tmp3.getValue(1)); 1277f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1278f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else { 1279f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // If this is an unaligned load and the target doesn't support it, 1280f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // expand it. 1281bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) { 1282e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = LD->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1283e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 1284f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (LD->getAlignment() < ABIAlignment){ 1285debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 1286debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson DAG, TLI); 1287f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = Result.getOperand(0); 1288f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = Result.getOperand(1); 1289f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Tmp1); 1290f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Tmp2); 1291f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1292f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1293f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1294f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 1295f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Expand: 1296f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // f64 = EXTLOAD f32 should expand to LOAD, FP_EXTEND 129762c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov // f128 = EXTLOAD {f32,f64} too 129862c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov if ((SrcVT == MVT::f32 && (Node->getValueType(0) == MVT::f64 || 129962c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov Node->getValueType(0) == MVT::f128)) || 130062c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov (SrcVT == MVT::f64 && Node->getValueType(0) == MVT::f128)) { 1301ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen SDValue Load = DAG.getLoad(SrcVT, dl, Tmp1, Tmp2, LD->getSrcValue(), 130262c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov LD->getSrcValueOffset(), 13031e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isVolatile(), LD->isNonTemporal(), 13041e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->getAlignment()); 1305fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::FP_EXTEND, dl, 1306ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Load); 1307f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); // Relegalize new nodes. 1308f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Load.getValue(1)); 1309f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 1310f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1311f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(ExtType != ISD::EXTLOAD &&"EXTLOAD should always be supported!"); 1312f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Turn the unsupported load into an EXTLOAD followed by an explicit 1313f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // zero/sign extend inreg. 1314ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getExtLoad(ISD::EXTLOAD, dl, Node->getValueType(0), 1315f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1, Tmp2, LD->getSrcValue(), 1316f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValueOffset(), SrcVT, 13171e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isVolatile(), LD->isNonTemporal(), 13181e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->getAlignment()); 1319475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ValRes; 1320f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (ExtType == ISD::SEXTLOAD) 1321ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen ValRes = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 1322ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), 1323f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result, DAG.getValueType(SrcVT)); 1324f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands else 1325ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen ValRes = DAG.getZeroExtendInReg(Result, dl, SrcVT); 1326f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(ValRes); // Relegalize new nodes. 1327f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Result.getValue(1)); // Relegalize new nodes. 1328466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1329466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 13309d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth } 1331f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1332466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Since loads produce two values, make sure to remember that we legalized 1333466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // both of them. 1334475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp1); 1335475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp2); 133699a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Op.getResNo() ? Tmp2 : Tmp1; 133701ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 133801ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 1339f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::STORE: { 13408b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng StoreSDNode *ST = cast<StoreSDNode>(Node); 13418b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = LegalizeOp(ST->getChain()); // Legalize the chain. 13428b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp2 = LegalizeOp(ST->getBasePtr()); // Legalize the pointer. 1343d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman int SVOffset = ST->getSrcValueOffset(); 1344d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman unsigned Alignment = ST->getAlignment(); 1345d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman bool isVolatile = ST->isVolatile(); 13461e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = ST->isNonTemporal(); 13478b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 13488b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng if (!ST->isTruncatingStore()) { 13497ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (SDNode *OptStore = OptimizeFloatStore(ST).getNode()) { 13507ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Result = SDValue(OptStore, 0); 13517ef3d178660b82d1571757e49f44b004d772a116Eli Friedman break; 1352d93d46ee7e0a0e539d42139b85c71b2b8c3968feChris Lattner } 1353fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1354957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman { 13558b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp3 = LegalizeOp(ST->getValue()); 1356fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2, 13578b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng ST->getOffset()); 13588b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 1359e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp3.getValueType(); 13608b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng switch (TLI.getOperationAction(ISD::STORE, VT)) { 1361c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 1362f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1363f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned store and the target doesn't support it, 1364f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1365bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) { 1366e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1367e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 1368f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (ST->getAlignment() < ABIAlignment) 1369e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), 1370e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng DAG, TLI); 1371f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1372f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 13738b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Custom: 13748b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = TLI.LowerOperation(Result, DAG); 1375ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) Result = Tmp1; 13768b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 13778b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Promote: 137883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Unknown legal promote case!"); 1379fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Tmp3 = DAG.getNode(ISD::BIT_CONVERT, dl, 13808b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng TLI.getTypeToPromoteTo(ISD::STORE, VT), Tmp3); 1381ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, 1382d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman ST->getSrcValue(), SVOffset, isVolatile, 13831e559443a17d1b335f697551c6263ba60d5dd827David Greene isNonTemporal, Alignment); 13848b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 13858b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 13862efce0a589e2a688a1a06b5dc2ed0db32ae79924Chris Lattner break; 1387f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 13888b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } else { 1389957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman Tmp3 = LegalizeOp(ST->getValue()); 13907e857201f387d004571e6058e2ea709163500f38Duncan Sands 1391e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT StVT = ST->getMemoryVT(); 139283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned StWidth = StVT.getSizeInBits(); 13937e857201f387d004571e6058e2ea709163500f38Duncan Sands 139483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (StWidth != StVT.getStoreSizeInBits()) { 13957e857201f387d004571e6058e2ea709163500f38Duncan Sands // Promote to a byte-sized store with upper bits zero if not 13967e857201f387d004571e6058e2ea709163500f38Duncan Sands // storing an integral number of bytes. For example, promote 13977e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i1 X -> TRUNCSTORE:i8 (and X, 1) 139823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = EVT::getIntegerVT(*DAG.getContext(), StVT.getStoreSizeInBits()); 1399ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getZeroExtendInReg(Tmp3, dl, StVT); 1400ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14011e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, NVT, isVolatile, isNonTemporal, 14021e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 14037e857201f387d004571e6058e2ea709163500f38Duncan Sands } else if (StWidth & (StWidth - 1)) { 14047e857201f387d004571e6058e2ea709163500f38Duncan Sands // If not storing a power-of-2 number of bits, expand as two stores. 1405bceddbdc919fc2ca7bc8c3911586ba93367686f0Ken Dyck assert(!StVT.isVector() && "Unsupported truncstore!"); 14067e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned RoundWidth = 1 << Log2_32(StWidth); 14077e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(RoundWidth < StWidth); 14087e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned ExtraWidth = StWidth - RoundWidth; 14097e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(ExtraWidth < RoundWidth); 14107e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 14117e857201f387d004571e6058e2ea709163500f38Duncan Sands "Store size not an integral number of bytes!"); 141223b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 141323b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 1414475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 14157e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned IncrementSize; 14167e857201f387d004571e6058e2ea709163500f38Duncan Sands 14177e857201f387d004571e6058e2ea709163500f38Duncan Sands if (TLI.isLittleEndian()) { 14187e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 X, TRUNCSTORE@+2:i8 (srl X, 16) 14197e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the bottom RoundWidth bits. 1420ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14217e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset, RoundVT, 14221e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, Alignment); 14237e857201f387d004571e6058e2ea709163500f38Duncan Sands 14247e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14257e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1426ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14277e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1428ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 14297e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(RoundWidth, TLI.getShiftAmountTy())); 1430ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), 14317e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset + IncrementSize, ExtraVT, isVolatile, 14321e559443a17d1b335f697551c6263ba60d5dd827David Greene isNonTemporal, 14337e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 14347e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 14357e857201f387d004571e6058e2ea709163500f38Duncan Sands // Big endian - avoid unaligned stores. 14367e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 (srl X, 8), TRUNCSTORE@+2:i8 X 14377e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the top RoundWidth bits. 1438ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 14397e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy())); 1440ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), 14411e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, RoundVT, isVolatile, isNonTemporal, 14421e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 14437e857201f387d004571e6058e2ea709163500f38Duncan Sands 14447e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14457e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1446ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14477e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1448ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14497e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset + IncrementSize, ExtraVT, isVolatile, 14501e559443a17d1b335f697551c6263ba60d5dd827David Greene isNonTemporal, 14517e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 14527e857201f387d004571e6058e2ea709163500f38Duncan Sands } 1453c7029805ef35ce9805931067b841e6af11db382eChris Lattner 14547e857201f387d004571e6058e2ea709163500f38Duncan Sands // The order of the stores doesn't matter. 1455825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Result = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 14567e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 14577e857201f387d004571e6058e2ea709163500f38Duncan Sands if (Tmp1 != ST->getChain() || Tmp3 != ST->getValue() || 14587e857201f387d004571e6058e2ea709163500f38Duncan Sands Tmp2 != ST->getBasePtr()) 14597e857201f387d004571e6058e2ea709163500f38Duncan Sands Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2, 14607e857201f387d004571e6058e2ea709163500f38Duncan Sands ST->getOffset()); 14617e857201f387d004571e6058e2ea709163500f38Duncan Sands 14627e857201f387d004571e6058e2ea709163500f38Duncan Sands switch (TLI.getTruncStoreAction(ST->getValue().getValueType(), StVT)) { 1463c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 14647e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Legal: 14657e857201f387d004571e6058e2ea709163500f38Duncan Sands // If this is an unaligned store and the target doesn't support it, 14667e857201f387d004571e6058e2ea709163500f38Duncan Sands // expand it. 1467bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) { 1468e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1469e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 14707e857201f387d004571e6058e2ea709163500f38Duncan Sands if (ST->getAlignment() < ABIAlignment) 1471e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), 1472e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng DAG, TLI); 14737e857201f387d004571e6058e2ea709163500f38Duncan Sands } 14747e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 14757e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Custom: 14767e857201f387d004571e6058e2ea709163500f38Duncan Sands Result = TLI.LowerOperation(Result, DAG); 14777e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 14787e857201f387d004571e6058e2ea709163500f38Duncan Sands case Expand: 14797e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i16 i32 -> STORE i16 14807e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(isTypeLegal(StVT) && "Do not know how to expand this store!"); 1481ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getNode(ISD::TRUNCATE, dl, StVT, Tmp3); 1482ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14831e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, isVolatile, isNonTemporal, 14841e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 14857e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 1486f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 14878b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 14883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 14893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 1490f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 149145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 14924ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner assert(Result.getValueType() == Op.getValueType() && 14934ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner "Bad legalization!"); 1494fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1495456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner // Make sure that the generated code is itself legal. 1496456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner if (Result != Op) 1497456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner Result = LegalizeOp(Result); 14983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 149945982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 150045982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 150145982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner AddLegalizedOperand(Op, Result); 15023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return Result; 15033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 15043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 15053d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli FriedmanSDValue SelectionDAGLegalize::ExpandExtractFromVectorThroughStack(SDValue Op) { 15063d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Vec = Op.getOperand(0); 15073d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Idx = Op.getOperand(1); 15083d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DebugLoc dl = Op.getDebugLoc(); 15093d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Store the value to a temporary stack slot, then LOAD the returned part. 15103d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue StackPtr = DAG.CreateStackTemporary(Vec.getValueType()); 15111e559443a17d1b335f697551c6263ba60d5dd827David Greene SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Vec, StackPtr, NULL, 0, 15121e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 15133d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15143d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Add the offset to the index. 1515aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned EltSize = 1516aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman Vec.getValueType().getVectorElementType().getSizeInBits()/8; 15173d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::MUL, dl, Idx.getValueType(), Idx, 15183d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DAG.getConstant(EltSize, Idx.getValueType())); 15193d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15203d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman if (Idx.getValueType().bitsGT(TLI.getPointerTy())) 15213d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::TRUNCATE, dl, TLI.getPointerTy(), Idx); 15223d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman else 15233d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::ZERO_EXTEND, dl, TLI.getPointerTy(), Idx); 15243d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15253d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman StackPtr = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, StackPtr); 15263d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 1527c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman if (Op.getValueType().isVector()) 15281e559443a17d1b335f697551c6263ba60d5dd827David Greene return DAG.getLoad(Op.getValueType(), dl, Ch, StackPtr, NULL, 0, 15291e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 1530c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman else 1531c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman return DAG.getExtLoad(ISD::EXTLOAD, dl, Op.getValueType(), Ch, StackPtr, 15321e559443a17d1b335f697551c6263ba60d5dd827David Greene NULL, 0, Vec.getValueType().getVectorElementType(), 15331e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 15343d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman} 15353d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15367ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::ExpandVectorBuildThroughStack(SDNode* Node) { 15377ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We can't handle this case efficiently. Allocate a sufficiently 15387ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // aligned object on the stack, store each element into it, then load 15397ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // the result as a vector. 15407ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Create the stack frame object. 1541e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 15425b8bce11d60694a651965cf019b9cb5d84ed3b90Dale Johannesen EVT EltVT = VT.getVectorElementType(); 15437ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15447ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue FIPtr = DAG.CreateStackTemporary(VT); 1545ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int FI = cast<FrameIndexSDNode>(FIPtr.getNode())->getIndex(); 1546ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng const Value *SV = PseudoSourceValue::getFixedStack(FI); 15477ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15487ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Emit a store of each element to the stack slot. 15497ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SmallVector<SDValue, 8> Stores; 1550aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned TypeByteSize = EltVT.getSizeInBits() / 8; 15517ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Store (in the right endianness) the elements to memory. 15527ef3d178660b82d1571757e49f44b004d772a116Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 15537ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Ignore undef elements. 15547ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (Node->getOperand(i).getOpcode() == ISD::UNDEF) continue; 15557ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15567ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Offset = TypeByteSize*i; 15577ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15587ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Idx = DAG.getConstant(Offset, FIPtr.getValueType()); 15597ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Idx = DAG.getNode(ISD::ADD, dl, FIPtr.getValueType(), FIPtr, Idx); 15607ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15619949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman // If the destination vector element type is narrower than the source 15629949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman // element type, only store the bits necessary. 15639949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman if (EltVT.bitsLT(Node->getOperand(i).getValueType().getScalarType())) { 15645b8bce11d60694a651965cf019b9cb5d84ed3b90Dale Johannesen Stores.push_back(DAG.getTruncStore(DAG.getEntryNode(), dl, 15651e559443a17d1b335f697551c6263ba60d5dd827David Greene Node->getOperand(i), Idx, SV, Offset, 15661e559443a17d1b335f697551c6263ba60d5dd827David Greene EltVT, false, false, 0)); 1567eb38ebf15c326a5bb45ca9da6329cdf19ad6df95Mon P Wang } else 15685b8bce11d60694a651965cf019b9cb5d84ed3b90Dale Johannesen Stores.push_back(DAG.getStore(DAG.getEntryNode(), dl, 15691e559443a17d1b335f697551c6263ba60d5dd827David Greene Node->getOperand(i), Idx, SV, Offset, 15701e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0)); 15717ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 15727ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15737ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue StoreChain; 15747ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (!Stores.empty()) // Not all undef elements? 1575825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson StoreChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 15767ef3d178660b82d1571757e49f44b004d772a116Eli Friedman &Stores[0], Stores.size()); 15777ef3d178660b82d1571757e49f44b004d772a116Eli Friedman else 15787ef3d178660b82d1571757e49f44b004d772a116Eli Friedman StoreChain = DAG.getEntryNode(); 15797ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15807ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Result is a load from the stack slot. 15811e559443a17d1b335f697551c6263ba60d5dd827David Greene return DAG.getLoad(VT, dl, StoreChain, FIPtr, SV, 0, false, false, 0); 15827ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 15837ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15844bc8c718218159fe410462f6e3670e7cb76c0c04Eli FriedmanSDValue SelectionDAGLegalize::ExpandFCOPYSIGN(SDNode* Node) { 15854bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15864bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = Node->getOperand(0); 15874bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = Node->getOperand(1); 1588825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert((Tmp2.getValueType() == MVT::f32 || 1589825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp2.getValueType() == MVT::f64) && 15904bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman "Ugly special-cased code!"); 15914bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Get the sign bit of the RHS. 15924bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignBit; 1593825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson EVT IVT = Tmp2.getValueType() == MVT::f64 ? MVT::i64 : MVT::i32; 15944bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (isTypeLegal(IVT)) { 15954bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = DAG.getNode(ISD::BIT_CONVERT, dl, IVT, Tmp2); 15964bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else { 15974bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert(isTypeLegal(TLI.getPointerTy()) && 1598825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (TLI.getPointerTy() == MVT::i32 || 1599825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson TLI.getPointerTy() == MVT::i64) && 16004bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman "Legal type for load?!"); 16014bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue StackPtr = DAG.CreateStackTemporary(Tmp2.getValueType()); 16024bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue StorePtr = StackPtr, LoadPtr = StackPtr; 16034bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Ch = 16041e559443a17d1b335f697551c6263ba60d5dd827David Greene DAG.getStore(DAG.getEntryNode(), dl, Tmp2, StorePtr, NULL, 0, 16051e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 1606825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Tmp2.getValueType() == MVT::f64 && TLI.isLittleEndian()) 16074bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LoadPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), 16084bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LoadPtr, DAG.getIntPtrConstant(4)); 16094bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = DAG.getExtLoad(ISD::SEXTLOAD, dl, TLI.getPointerTy(), 16101e559443a17d1b335f697551c6263ba60d5dd827David Greene Ch, LoadPtr, NULL, 0, MVT::i32, 16111e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 16124bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16134bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = 16144bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getSetCC(dl, TLI.getSetCCResultType(SignBit.getValueType()), 16154bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit, DAG.getConstant(0, SignBit.getValueType()), 16164bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETLT); 16174bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Get the absolute value of the result. 16184bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue AbsVal = DAG.getNode(ISD::FABS, dl, Tmp1.getValueType(), Tmp1); 16194bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Select between the nabs and abs value based on the sign bit of 16204bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // the input. 16214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getNode(ISD::SELECT, dl, AbsVal.getValueType(), SignBit, 16224bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getNode(ISD::FNEG, dl, AbsVal.getValueType(), AbsVal), 16234bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman AbsVal); 16244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16254bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16264bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedmanvoid SelectionDAGLegalize::ExpandDYNAMIC_STACKALLOC(SDNode* Node, 16274bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results) { 16284bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned SPReg = TLI.getStackPointerRegisterToSaveRestore(); 16294bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert(SPReg && "Target cannot require DYNAMIC_STACKALLOC expansion and" 16304bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman " not tell us which reg is the stack pointer!"); 16314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 1632e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 16334bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = SDValue(Node, 0); 16344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = SDValue(Node, 1); 16354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp3 = Node->getOperand(2); 16364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Tmp1.getOperand(0); 16374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Chain the dynamic stack allocation so that it doesn't modify the stack 16394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // pointer when other instructions are using the stack. 16404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(0, true)); 16414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Size = Tmp2.getOperand(1); 16434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SP = DAG.getCopyFromReg(Chain, dl, SPReg, VT); 16444bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = SP.getValue(1); 16454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Align = cast<ConstantSDNode>(Tmp3)->getZExtValue(); 16464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned StackAlign = 16474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getTargetMachine().getFrameInfo()->getStackAlignment(); 16484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Align > StackAlign) 16494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SP = DAG.getNode(ISD::AND, dl, VT, SP, 16504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getConstant(-(uint64_t)Align, VT)); 16514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, SP, Size); // Value 16524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCopyToReg(Chain, dl, SPReg, Tmp1); // Output chain 16534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp2 = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(0, true), 16554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getIntPtrConstant(0, true), SDValue()); 16564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 16584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp2); 16594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16617f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// LegalizeSetCCCondCode - Legalize a SETCC with given LHS and RHS and 1662f77fc92b03efe455008474894d217282e2a03cadDan Gohman/// condition code CC on the current target. This routine expands SETCC with 16637f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// illegal condition code into AND / OR of multiple SETCC values. 1664e50ed30282bb5b4a9ed952580523f2dda16215acOwen Andersonvoid SelectionDAGLegalize::LegalizeSetCCCondCode(EVT VT, 16657f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng SDValue &LHS, SDValue &RHS, 1666bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue &CC, 1667775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DebugLoc dl) { 1668e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = LHS.getValueType(); 16697f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CCCode = cast<CondCodeSDNode>(CC)->get(); 16707f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (TLI.getCondCodeAction(CCCode, OpVT)) { 1671c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown condition code action!"); 16727f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Legal: 16737f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // Nothing to do. 16747f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 16757f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Expand: { 16767f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CC1 = ISD::SETCC_INVALID, CC2 = ISD::SETCC_INVALID; 16777f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng unsigned Opc = 0; 16787f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (CCCode) { 1679c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Don't know how to expand this condition!"); 1680e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETO; Opc = ISD::AND; break; 1681e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGT: CC1 = ISD::SETGT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1682e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGE: CC1 = ISD::SETGE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1683e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLT: CC1 = ISD::SETLT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1684e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLE: CC1 = ISD::SETLE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1685e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETONE: CC1 = ISD::SETNE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1686e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1687e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGT: CC1 = ISD::SETGT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1688e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGE: CC1 = ISD::SETGE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1689e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULT: CC1 = ISD::SETLT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1690e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULE: CC1 = ISD::SETLE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1691e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUNE: CC1 = ISD::SETNE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 16927f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // FIXME: Implement more expansions. 16937f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 16947f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 1695bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC1 = DAG.getSetCC(dl, VT, LHS, RHS, CC1); 1696bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC2 = DAG.getSetCC(dl, VT, LHS, RHS, CC2); 1697bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen LHS = DAG.getNode(Opc, dl, VT, SetCC1, SetCC2); 16987f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng RHS = SDValue(); 16997f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng CC = SDValue(); 17007f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 17017f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17027f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17037f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng} 17047f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 17051401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// EmitStackConvert - Emit a store/load combination to the stack. This stores 17061401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// SrcOp to a stack slot of type SlotVT, truncating it if needed. It then does 17071401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// a load from the stack slot to DestVT, extending it if needed. 17081401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// The resultant code need not be legal. 1709475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::EmitStackConvert(SDValue SrcOp, 1710e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SlotVT, 1711e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 17128a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 171335481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Create the stack frame object. 1714ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson unsigned SrcAlign = 1715ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getTargetData()->getPrefTypeAlignment(SrcOp.getValueType(). 171623b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson getTypeForEVT(*DAG.getContext())); 1717475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FIPtr = DAG.CreateStackTemporary(SlotVT, SrcAlign); 1718fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1719ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(FIPtr); 1720ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = StackPtrFI->getIndex(); 1721ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng const Value *SV = PseudoSourceValue::getFixedStack(SPFI); 1722ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 172383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SrcSize = SrcOp.getValueType().getSizeInBits(); 172483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SlotSize = SlotVT.getSizeInBits(); 172583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned DestSize = DestVT.getSizeInBits(); 1726ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson unsigned DestAlign = 1727ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng TLI.getTargetData()->getPrefTypeAlignment(DestVT.getTypeForEVT(*DAG.getContext())); 1728fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17291401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // Emit a store to the stack slot. Use a truncstore if the input value is 17301401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // later than DestVT. 1731475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store; 1732ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 17331401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SrcSize > SlotSize) 17348a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getTruncStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 17351e559443a17d1b335f697551c6263ba60d5dd827David Greene SV, 0, SlotVT, false, false, SrcAlign); 17361401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner else { 17371401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SrcSize == SlotSize && "Invalid store"); 17388a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 17391e559443a17d1b335f697551c6263ba60d5dd827David Greene SV, 0, false, false, SrcAlign); 17401401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner } 1741fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 174235481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Result is a load from the stack slot. 17431401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SlotSize == DestSize) 17441e559443a17d1b335f697551c6263ba60d5dd827David Greene return DAG.getLoad(DestVT, dl, Store, FIPtr, SV, 0, false, false, 17451e559443a17d1b335f697551c6263ba60d5dd827David Greene DestAlign); 1746fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17471401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SlotSize < DestSize && "Unknown extension!"); 17488a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, Store, FIPtr, SV, 0, SlotVT, 17491e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, DestAlign); 175035481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner} 175135481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner 1752475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandSCALAR_TO_VECTOR(SDNode *Node) { 17538a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl = Node->getDebugLoc(); 17544352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // Create a vector sized/aligned stack slot, store the value to element #0, 17554352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // then load the whole vector back out. 1756475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(Node->getValueType(0)); 175769de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 1758ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(StackPtr); 1759ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = StackPtrFI->getIndex(); 1760ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 1761b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands SDValue Ch = DAG.getTruncStore(DAG.getEntryNode(), dl, Node->getOperand(0), 1762b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands StackPtr, 1763ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng PseudoSourceValue::getFixedStack(SPFI), 0, 17641e559443a17d1b335f697551c6263ba60d5dd827David Greene Node->getValueType(0).getVectorElementType(), 17651e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 17668a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(Node->getValueType(0), dl, Ch, StackPtr, 17671e559443a17d1b335f697551c6263ba60d5dd827David Greene PseudoSourceValue::getFixedStack(SPFI), 0, 17681e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 17694352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 17704352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 17714352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 1772ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner/// ExpandBUILD_VECTOR - Expand a BUILD_VECTOR node on targets that don't 177307a96765daedf180a7102d39fe56c499878312b7Dan Gohman/// support the operation, but do support the resultant vector type. 1774475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandBUILD_VECTOR(SDNode *Node) { 177526cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson unsigned NumElems = Node->getNumOperands(); 17767a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Value1, Value2; 177726cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson DebugLoc dl = Node->getDebugLoc(); 1778e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1779e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(0).getValueType(); 1780e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 1781fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1782fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // If the only non-undef value is the low element, turn this into a 178387100e0b83b808757bf44dabecd1d1048255d1adChris Lattner // SCALAR_TO_VECTOR node. If this is { X, X, X, X }, determine X. 1784ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner bool isOnlyLowElement = true; 17857a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman bool MoreThanTwoValues = false; 17862eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner bool isConstant = true; 17877a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 1788475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue V = Node->getOperand(i); 17897a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 17907a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 17917a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (i > 0) 1792ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner isOnlyLowElement = false; 17937a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!isa<ConstantFPSDNode>(V) && !isa<ConstantSDNode>(V)) 17942eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner isConstant = false; 17957a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 17967a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) { 17977a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value1 = V; 17987a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (!Value2.getNode()) { 17997a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V != Value1) 18007a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value2 = V; 18017a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (V != Value1 && V != Value2) { 18027a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman MoreThanTwoValues = true; 18037a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 1804ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1805fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18067a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) 18077a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getUNDEF(VT); 18087a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 18097a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (isOnlyLowElement) 181026cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson return DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Node->getOperand(0)); 1811fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18122eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // If all elements are constants, create a load from the constant pool. 1813ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner if (isConstant) { 1814ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner std::vector<Constant*> CV; 1815033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng for (unsigned i = 0, e = NumElems; i != e; ++i) { 1816fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel if (ConstantFPSDNode *V = 1817ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner dyn_cast<ConstantFPSDNode>(Node->getOperand(i))) { 18184fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman CV.push_back(const_cast<ConstantFP *>(V->getConstantFPValue())); 1819fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel } else if (ConstantSDNode *V = 1820ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson dyn_cast<ConstantSDNode>(Node->getOperand(i))) { 18219a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen if (OpVT==EltVT) 18229a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CV.push_back(const_cast<ConstantInt *>(V->getConstantIntValue())); 18239a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen else { 18249a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // If OpVT and EltVT don't match, EltVT is not legal and the 18259a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // element values have been promoted/truncated earlier. Undo this; 18269a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // we don't want a v16i8 to become a v16i32 for example. 18279a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen const ConstantInt *CI = V->getConstantIntValue(); 18289a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CV.push_back(ConstantInt::get(EltVT.getTypeForEVT(*DAG.getContext()), 18299a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CI->getZExtValue())); 18309a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen } 1831ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } else { 1832ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner assert(Node->getOperand(i).getOpcode() == ISD::UNDEF); 18339a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen const Type *OpNTy = EltVT.getTypeForEVT(*DAG.getContext()); 18349e9a0d5fc26878e51a58a8b57900fcbf952c2691Owen Anderson CV.push_back(UndefValue::get(OpNTy)); 1835ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1836ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1837af7ec975870f92245f1f1484ac80a1e2db6a0afaOwen Anderson Constant *CP = ConstantVector::get(CV); 1838475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(CP, TLI.getPointerTy()); 18391606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 18408a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(VT, dl, DAG.getEntryNode(), CPIdx, 184150284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, 18421e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, Alignment); 1843ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1844fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18457a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!MoreThanTwoValues) { 18467a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SmallVector<int, 8> ShuffleVec(NumElems, -1); 18477a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 18487a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue V = Node->getOperand(i); 18497a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 18507a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 18517a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman ShuffleVec[i] = V == Value1 ? 0 : NumElems; 18527a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 18537a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (TLI.isShuffleMaskLegal(ShuffleVec, Node->getValueType(0))) { 18542eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Get the splatted value into the low element of a vector register. 18557a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec1 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value1); 18567a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec2; 18577a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (Value2.getNode()) 18587a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value2); 18597a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman else 18607a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getUNDEF(VT); 1861fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18622eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Return shuffle(LowValVec, undef, <0,0,0,0>) 18637a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getVectorShuffle(VT, dl, Vec1, Vec2, ShuffleVec.data()); 1864033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1865033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1866fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18677ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, we can't handle this case efficiently. 18687ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return ExpandVectorBuildThroughStack(Node); 1869ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner} 1870ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner 187177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// ExpandLibCall - Expand a node into a call to a libcall. If the result value 187277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// does not fit into a register, return the lo part and set the hi part to the 187377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// by-reg argument. If it does fit into a single register, return the result 187477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// and leave the Hi part unset. 1875475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, 187647b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman bool isSigned) { 18776831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "Cannot overlap legalization of calls!"); 1878fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // The input chain to this libcall is the entry node of the function. 18796831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalizing the call will automatically add the previous call to the 18806831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // dependence. 1881475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InChain = DAG.getEntryNode(); 1882fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 188377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 188447857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer TargetLowering::ArgListEntry Entry; 188577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 1886e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ArgVT = Node->getOperand(i).getValueType(); 188723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext()); 1888fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Entry.Node = Node->getOperand(i); Entry.Ty = ArgTy; 1889d0b82b301d700217a716526f9329bb031e0d6578Anton Korobeynikov Entry.isSExt = isSigned; 189000fee65fd21f9615d1a604b8b7d42cd16a3f6b47Duncan Sands Entry.isZExt = !isSigned; 189147857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer Args.push_back(Entry); 189277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 1893056292fd738924f3f7703725d8f630983794b5a5Bill Wendling SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 18940c39719bfc7d0b3e61fbd55e1115184a1d5f6ae7Mon P Wang TLI.getPointerTy()); 1895edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 18960d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Splice the libcall in wherever FindInputOutputChains tells us to. 189723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext()); 1898ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson std::pair<SDValue, SDValue> CallInfo = 189986098bd6a63d2cdf0c9be9ef3151bd2728281fd7Dale Johannesen TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false, 190072977a45a8ad9d9524c9b49399e89fb9a3a676edAnton Korobeynikov 0, TLI.getLibcallCallingConv(LC), false, 190198ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 190246ada19645c981a0b7932487d163f7582074a4d9Bill Wendling Callee, Args, DAG, Node->getDebugLoc()); 19030d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 19046831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call sequence, starting with the chain. This will advance 19056831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // the LastCALLSEQ_END to the legalized version of the CALLSEQ_END node that 19066831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // was added by LowerCallTo (guaranteeing proper serialization of calls). 19076831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(CallInfo.second); 190874807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman return CallInfo.first; 190922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 191022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 1911f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandFPLibCall(SDNode* Node, 1912f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F32, 1913f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, 1914f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F80, 1915f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128) { 1916f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 1917825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 1918c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unexpected request for libcall!"); 1919825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f32: LC = Call_F32; break; 1920825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f64: LC = Call_F64; break; 1921825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f80: LC = Call_F80; break; 1922825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::ppcf128: LC = Call_PPCF128; break; 1923f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 1924f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, false); 1925f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 1926f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 1927f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandIntLibCall(SDNode* Node, bool isSigned, 19288983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I8, 1929f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I16, 1930f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I32, 1931f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I64, 1932f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128) { 1933f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 1934825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 1935c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unexpected request for libcall!"); 19368983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i8: LC = Call_I8; break; 19378983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i16: LC = Call_I16; break; 19388983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i32: LC = Call_I32; break; 19398983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i64: LC = Call_I64; break; 1940825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i128: LC = Call_I128; break; 1941f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 1942f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, isSigned); 1943f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 1944f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 194522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandLegalINT_TO_FP - This function is responsible for legalizing a 194622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// INT_TO_FP operation of the specified operand when the target requests that 194722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we expand it. At this point, we know that the result and operand types are 194822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target. 1949475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLegalINT_TO_FP(bool isSigned, 1950475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0, 1951e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 1952af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 1953825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Op0.getValueType() == MVT::i32) { 195422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // simple 32-bit [signed|unsigned] integer to float/double expansion 1955fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 195623594d4537fb88a963c6d6993af5027eac9bfbacChris Lattner // Get the stack frame index of a 8 byte buffer. 1957825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue StackSlot = DAG.CreateStackTemporary(MVT::f64); 1958fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 195922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // word offset constant for Hi/Lo address computation 1960475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue WordOff = DAG.getConstant(sizeof(int), TLI.getPointerTy()); 196122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // set up Hi and Lo (into buffer) address based on endian 1962475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = StackSlot; 1963fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Lo = DAG.getNode(ISD::ADD, dl, 1964ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getPointerTy(), StackSlot, WordOff); 1965408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner if (TLI.isLittleEndian()) 1966408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner std::swap(Hi, Lo); 1967fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 196822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // if signed map to unsigned space 1969475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0Mapped; 197022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) { 197122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // constant used to invert sign bit (signed to unsigned mapping) 1972825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue SignBit = DAG.getConstant(0x80000000u, MVT::i32); 1973825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Op0Mapped = DAG.getNode(ISD::XOR, dl, MVT::i32, Op0, SignBit); 197422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } else { 197522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Op0Mapped = Op0; 197622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 197722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the lo of the constructed double - based on integer input 1978af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Store1 = DAG.getStore(DAG.getEntryNode(), dl, 19791e559443a17d1b335f697551c6263ba60d5dd827David Greene Op0Mapped, Lo, NULL, 0, 19801e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 198122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // initial hi portion of constructed double 1982825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue InitialHi = DAG.getConstant(0x43300000u, MVT::i32); 198322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the hi of the constructed double - biased exponent 19841e559443a17d1b335f697551c6263ba60d5dd827David Greene SDValue Store2=DAG.getStore(Store1, dl, InitialHi, Hi, NULL, 0, 19851e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 198622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // load the constructed double 19871e559443a17d1b335f697551c6263ba60d5dd827David Greene SDValue Load = DAG.getLoad(MVT::f64, dl, Store2, StackSlot, NULL, 0, 19881e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 198922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // FP constant to bias correct the final result 1990475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Bias = DAG.getConstantFP(isSigned ? 1991ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000080000000ULL) : 1992ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000000000000ULL), 1993825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::f64); 199422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // subtract the bias 1995825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Sub = DAG.getNode(ISD::FSUB, dl, MVT::f64, Load, Bias); 199622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // final result 1997475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result; 199822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // handle final rounding 1999825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (DestVT == MVT::f64) { 200022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // do nothing 200122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Result = Sub; 2002825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsLT(MVT::f64)) { 2003af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_ROUND, dl, DestVT, Sub, 20040bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(0)); 2005825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsGT(MVT::f64)) { 2006af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, DestVT, Sub); 200722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 200822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Result; 200922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 201022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner assert(!isSigned && "Legalize cannot Expand SINT_TO_FP for i64 yet"); 2011af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Tmp1 = DAG.getNode(ISD::SINT_TO_FP, dl, DestVT, Op0); 201222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2013af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue SignSet = DAG.getSetCC(dl, TLI.getSetCCResultType(Op0.getValueType()), 20145480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands Op0, DAG.getConstant(0, Op0.getValueType()), 20155480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands ISD::SETLT); 2016475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Zero = DAG.getIntPtrConstant(0), Four = DAG.getIntPtrConstant(4); 2017af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue CstOffset = DAG.getNode(ISD::SELECT, dl, Zero.getValueType(), 201822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner SignSet, Four, Zero); 201922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 202022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the sign bit of the integer is set, the large number will be treated 202122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // as a negative number. To counteract this, the dynamic code adds an 202222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // offset depending on the data type. 202322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner uint64_t FF; 2024825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Op0.getValueType().getSimpleVT().SimpleTy) { 2025c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unsupported integer type!"); 2026825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i8 : FF = 0x43800000ULL; break; // 2^8 (as a float) 2027825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i16: FF = 0x47800000ULL; break; // 2^16 (as a float) 2028825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i32: FF = 0x4F800000ULL; break; // 2^32 (as a float) 2029825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i64: FF = 0x5F800000ULL; break; // 2^64 (as a float) 203022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 203122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (TLI.isLittleEndian()) FF <<= 32; 20321d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson Constant *FudgeFactor = ConstantInt::get( 20331d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson Type::getInt64Ty(*DAG.getContext()), FF); 203422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2035475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(FudgeFactor, TLI.getPointerTy()); 20361606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 2037af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen CPIdx = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), CPIdx, CstOffset); 203887a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman Alignment = std::min(Alignment, 4u); 2039475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FudgeInReg; 2040825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (DestVT == MVT::f32) 2041825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson FudgeInReg = DAG.getLoad(MVT::f32, dl, DAG.getEntryNode(), CPIdx, 204250284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, 20431e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, Alignment); 204422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner else { 204569de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman FudgeInReg = 2046af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen LegalizeOp(DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, 204769de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman DAG.getEntryNode(), CPIdx, 20483069b8743769527ce7af6cfb6591a2f0fc2faee4Dan Gohman PseudoSourceValue::getConstantPool(), 0, 20491e559443a17d1b335f697551c6263ba60d5dd827David Greene MVT::f32, false, false, Alignment)); 205022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 205122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2052af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(ISD::FADD, dl, DestVT, Tmp1, FudgeInReg); 205322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 205422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 205522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalINT_TO_FP - This function is responsible for legalizing a 205622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// *INT_TO_FP operation of the specified operand when the target requests that 205722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 205822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal UINT_TO_FP or SINT_TO_FP 205922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that takes a larger input. 2060475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalINT_TO_FP(SDValue LegalOp, 2061e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2062af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2063af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 206422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate *INT_TO_FP operation to use. 2065e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewInTy = LegalOp.getValueType(); 206622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 206722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 206822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 206922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 207022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2071825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewInTy = (MVT::SimpleValueType)(NewInTy.getSimpleVT().SimpleTy+1); 207283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewInTy.isInteger() && "Ran out of possibilities!"); 207322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 207422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports SINT_TO_FP of this type, use it. 20753be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::SINT_TO_FP, NewInTy)) { 20763be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::SINT_TO_FP; 20773be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 207822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 207922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) continue; 208022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 208122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports UINT_TO_FP of this type, use it. 20823be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::UINT_TO_FP, NewInTy)) { 20833be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::UINT_TO_FP; 20843be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 208522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 208622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 208722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 208822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 208922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 209022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Okay, we found the operation and type to use. Zero extend our input to the 209122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // desired type then run the operation on it. 2092af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(OpToUse, dl, DestVT, 209322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, 2094af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen dl, NewInTy, LegalOp)); 209577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 209677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 209722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalFP_TO_INT - This function is responsible for legalizing a 209822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// FP_TO_*INT operation of the specified operand when the target requests that 209922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 210022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal FP_TO_UINT or FP_TO_SINT 210122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that returns a larger result. 2102475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalFP_TO_INT(SDValue LegalOp, 2103e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2104af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2105af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 210622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate FP_TO*INT operation to use. 2107e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewOutTy = DestVT; 21089c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 210922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 2110e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 211122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 211222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2113825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewOutTy = (MVT::SimpleValueType)(NewOutTy.getSimpleVT().SimpleTy+1); 211483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewOutTy.isInteger() && "Ran out of possibilities!"); 211566de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner 21163be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_SINT, NewOutTy)) { 211722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_SINT; 211822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 211922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 2120e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 21213be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_UINT, NewOutTy)) { 212222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_UINT; 212322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 2124e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner } 21250d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 212622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 2127a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner } 2128a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner 2129fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 213027a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Okay, we found the operation and type to use. 2131af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Operation = DAG.getNode(OpToUse, dl, NewOutTy, LegalOp); 2132126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 213327a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Truncate the result of the extended FP_TO_*INT operation to the desired 213427a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // size. 2135af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(ISD::TRUNCATE, dl, DestVT, Operation); 213622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 213713689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner 213822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBSWAP - Open code the operations for BSWAP of the specified operation. 213922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 21408a782a2a8c2f0c82f292d03a3f707232b0bae27bDale JohannesenSDValue SelectionDAGLegalize::ExpandBSWAP(SDValue Op, DebugLoc dl) { 2141e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2142e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SHVT = TLI.getShiftAmountTy(); 2143475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4, Tmp5, Tmp6, Tmp7, Tmp8; 2144825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (VT.getSimpleVT().SimpleTy) { 2145c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unhandled Expand type in BSWAP!"); 2146825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i16: 21478a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21488a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21498a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp1, Tmp2); 2150825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i32: 21518a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21528a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21538a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21548a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21558a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(0xFF0000, VT)); 21568a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(0xFF00, VT)); 21578a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 21588a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 21598a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 2160825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i64: 21618a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(56, SHVT)); 21628a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(40, SHVT)); 21638a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21648a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21658a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21668a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21678a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(40, SHVT)); 21688a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(56, SHVT)); 21698a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::AND, dl, VT, Tmp7, DAG.getConstant(255ULL<<48, VT)); 21708a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::AND, dl, VT, Tmp6, DAG.getConstant(255ULL<<40, VT)); 21718a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::AND, dl, VT, Tmp5, DAG.getConstant(255ULL<<32, VT)); 21728a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::AND, dl, VT, Tmp4, DAG.getConstant(255ULL<<24, VT)); 21738a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(255ULL<<16, VT)); 21748a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(255ULL<<8 , VT)); 21758a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp7); 21768a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::OR, dl, VT, Tmp6, Tmp5); 21778a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 21788a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 21798a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp6); 21808a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 21818a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp4); 21820d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner } 218377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 2184edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 218522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBitCount - Expand the specified bitcount instruction into operations. 218622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 2187fdc40a0a696c658d550d894ea03772e5f8af2c94Scott MichelSDValue SelectionDAGLegalize::ExpandBitCount(unsigned Opc, SDValue Op, 21888a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 218922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner switch (Opc) { 2190c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Cannot expand this yet!"); 219122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTPOP: { 219222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner static const uint64_t mask[6] = { 219322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x5555555555555555ULL, 0x3333333333333333ULL, 219422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x0F0F0F0F0F0F0F0FULL, 0x00FF00FF00FF00FFULL, 219522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x0000FFFF0000FFFFULL, 0x00000000FFFFFFFFULL 219622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner }; 2197e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2198e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ShVT = TLI.getShiftAmountTy(); 219983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 220022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 220122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner //x = (x & mask[i][len/8]) + (x >> (1 << i) & mask[i][len/8]) 2202b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands unsigned EltSize = VT.isVector() ? 2203b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands VT.getVectorElementType().getSizeInBits() : len; 2204b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands SDValue Tmp2 = DAG.getConstant(APInt(EltSize, mask[i]), VT); 2205475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2206fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::ADD, dl, VT, 2207e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::AND, dl, VT, Op, Tmp2), 22088a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::AND, dl, VT, 22098a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3), 22108a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2)); 221122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 221222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Op; 221322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 221422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTLZ: { 221522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we do this: 221622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 1); 221722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 2); 221822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // ... 221922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>16); 222022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>32); // for 64-bit input 222122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // return popcount(~x); 222222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // 222322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // but see also: http://www.hackersdelight.org/HDcode/nlz.cc 2224e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2225e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ShVT = TLI.getShiftAmountTy(); 222683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 222722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 2228475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2229fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::OR, dl, VT, Op, 2230e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3)); 223122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 22328a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Op = DAG.getNOT(dl, Op, VT); 22338a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Op); 223422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 223522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTTZ: { 223622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we use: { return popcount(~x & (x - 1)); } 223722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // unless the target has ctlz but not ctpop, in which case we use: 223822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // { return 32 - nlz(~x & (x-1)); } 223922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // see also http://www.hackersdelight.org/HDcode/ntz.cc 2240e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 22418a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue Tmp3 = DAG.getNode(ISD::AND, dl, VT, 22428a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNOT(dl, Op, VT), 22438a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SUB, dl, VT, Op, 22447581bfa2757a3149c6d17c0fe592e5c3808aa843Bill Wendling DAG.getConstant(1, VT))); 224522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If ISD::CTLZ is legal and CTPOP isn't, then do that instead. 2246f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman if (!TLI.isOperationLegalOrCustom(ISD::CTPOP, VT) && 2247f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.isOperationLegalOrCustom(ISD::CTLZ, VT)) 22488a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::SUB, dl, VT, 224983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(VT.getSizeInBits(), VT), 22508a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::CTLZ, dl, VT, Tmp3)); 22518a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Tmp3); 225222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 225322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 225422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 2255e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 22568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::ExpandNode(SDNode *Node, 22578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 22588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 2259bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 22608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 22618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 22628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 22638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 22648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandBitCount(Node->getOpcode(), Node->getOperand(0), dl); 22658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 22668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: 2268775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandBSWAP(Node->getOperand(0), dl)); 22698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 22718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 22728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 22738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, Node->getValueType(0))); 22748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 22768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(1, Node->getValueType(0))); 22778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 22798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_LABEL: 22808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::PREFETCH: 22818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MEMBARRIER: 22828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAEND: 22838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(0)); 22848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22854bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::DYNAMIC_STACKALLOC: 22864bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ExpandDYNAMIC_STACKALLOC(Node, Results); 22874bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 22888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 22898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0; i < Node->getNumValues(); i++) 22908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(i)); 22918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UNDEF: { 2293e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 22948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (VT.isInteger()) 22958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, VT)); 22968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else if (VT.isFloatingPoint()) 22978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstantFP(0, VT)); 22988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 2299c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Unknown value type!"); 23008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAP: { 23038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // If this operation is not supported, lower it to 'abort()' call 23048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::ArgListTy Args; 23058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman std::pair<SDValue, SDValue> CallResult = 23061d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson TLI.LowerCallTo(Node->getOperand(0), Type::getVoidTy(*DAG.getContext()), 23076b61cd185eeb90bec93f042535594132ae1f0f41Tilmann Scheller false, false, false, false, 0, CallingConv::C, false, 230898ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 23098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getExternalSymbol("abort", TLI.getPointerTy()), 231046ada19645c981a0b7932487d163f7582074a4d9Bill Wendling Args, DAG, dl); 23118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(CallResult.second); 23128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND: 23158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BIT_CONVERT: 23168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), Node->getValueType(0), 23178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 23188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_EXTEND: 23218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), 23228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType(), 23238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 23248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 23278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: we could fall back on load/store here too for targets without 23288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // SAR. However, it is doubtful that any exist. 2329e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 233087862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman EVT VT = Node->getValueType(0); 233187862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman EVT ShiftAmountTy = TLI.getShiftAmountTy(); 2332d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman if (VT.isVector()) 233387862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman ShiftAmountTy = VT; 2334d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman unsigned BitsDiff = VT.getScalarType().getSizeInBits() - 2335d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman ExtraVT.getScalarType().getSizeInBits(); 233687862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman SDValue ShiftCst = DAG.getConstant(BitsDiff, ShiftAmountTy); 23378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SHL, dl, Node->getValueType(0), 23388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), ShiftCst); 2339775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SRA, dl, Node->getValueType(0), Tmp1, ShiftCst); 2340775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 23418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: { 23448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // The only way we can lower this is to turn it into a TRUNCSTORE, 23458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // EXTLOAD pair, targetting a temporary location (a stack slot). 23468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 23478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: there is a choice here between constantly creating new stack 23488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // slots and always reusing the same one. We currently always create 23498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // new ones, as reuse may inhibit scheduling. 2350e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 23518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), ExtraVT, 23528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 23538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 23578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 23588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandLegalINT_TO_FP(Node->getOpcode() == ISD::SINT_TO_FP, 23598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), Node->getValueType(0), dl); 23608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: { 23638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SDValue True, False; 2364e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getOperand(0).getValueType(); 2365e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = Node->getValueType(0); 23668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const uint64_t zero[] = {0, 0}; 23678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APFloat apf = APFloat(APInt(VT.getSizeInBits(), 2, zero)); 23688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APInt x = APInt::getSignBit(NVT.getSizeInBits()); 23698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman (void)apf.convertFromAPInt(x, false, APFloat::rmNearestTiesToEven); 23708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getConstantFP(apf, VT); 23718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), 23728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), 23738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, ISD::SETLT); 23748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman True = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, Node->getOperand(0)); 2375775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling False = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, 2376775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getNode(ISD::FSUB, dl, VT, 2377775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(0), Tmp1)); 23788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman False = DAG.getNode(ISD::XOR, dl, NVT, False, 23798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(x, NVT)); 23808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, True, False); 23818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 2384509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VAARG: { 2385509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman const Value *V = cast<SrcValueSDNode>(Node->getOperand(2))->getValue(); 2386e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2387509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2388509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 23891e559443a17d1b335f697551c6263ba60d5dd827David Greene SDValue VAList = DAG.getLoad(TLI.getPointerTy(), dl, Tmp1, Tmp2, V, 0, 23901e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 2391509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Increment the pointer, VAList, to the next vaarg 2392509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList, 2393509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(TLI.getTargetData()-> 2394775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling getTypeAllocSize(VT.getTypeForEVT(*DAG.getContext())), 2395509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TLI.getPointerTy())); 2396509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Store the incremented VAList to the legalized pointer 23971e559443a17d1b335f697551c6263ba60d5dd827David Greene Tmp3 = DAG.getStore(VAList.getValue(1), dl, Tmp3, Tmp2, V, 0, 23981e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 2399509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Load the actual argument out of the pointer VAList 24001e559443a17d1b335f697551c6263ba60d5dd827David Greene Results.push_back(DAG.getLoad(VT, dl, Tmp3, VAList, NULL, 0, 24011e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0)); 2402509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Results[0].getValue(1)); 2403509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2404509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 24058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VACOPY: { 24068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This defaults to loading a pointer from the input and storing it to the 24078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // output, returning the chain. 24088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VD = cast<SrcValueSDNode>(Node->getOperand(3))->getValue(); 24098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VS = cast<SrcValueSDNode>(Node->getOperand(4))->getValue(); 24108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getLoad(TLI.getPointerTy(), dl, Node->getOperand(0), 24111e559443a17d1b335f697551c6263ba60d5dd827David Greene Node->getOperand(2), VS, 0, false, false, 0); 24121e559443a17d1b335f697551c6263ba60d5dd827David Greene Tmp1 = DAG.getStore(Tmp1.getValue(1), dl, Tmp1, Node->getOperand(1), VD, 0, 24131e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 2414775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 24158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 24188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOperand(0).getValueType().getVectorNumElements() == 1) 24198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This must be an access of the only element. Return it. 24208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, Node->getValueType(0), 24218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 24228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 24238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandExtractFromVectorThroughStack(SDValue(Node, 0)); 24248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 24258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_SUBVECTOR: 2427775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandExtractFromVectorThroughStack(SDValue(Node, 0))); 24288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 2429509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::CONCAT_VECTORS: { 2430775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandVectorBuildThroughStack(Node)); 2431509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2432509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 24338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SCALAR_TO_VECTOR: 2434775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandSCALAR_TO_VECTOR(Node)); 24358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24363f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INSERT_VECTOR_ELT: 2437775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandINSERT_VECTOR_ELT(Node->getOperand(0), 2438775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1), 2439775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(2), dl)); 24403f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 2441509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 2442509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 2443509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 2444509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 2445e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2446e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 2447509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned NumElems = VT.getVectorNumElements(); 2448509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<SDValue, 8> Ops; 2449509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman for (unsigned i = 0; i != NumElems; ++i) { 2450509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Mask[i] < 0) { 2451509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getUNDEF(EltVT)); 2452509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman continue; 2453509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2454509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned Idx = Mask[i]; 2455509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Idx < NumElems) 2456775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2457775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(0), 2458775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getIntPtrConstant(Idx))); 2459509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 2460775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2461775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1), 2462775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getIntPtrConstant(Idx - NumElems))); 2463509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2464509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &Ops[0], Ops.size()); 2465509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 2466509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2467509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 24688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: { 2469e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpTy = Node->getOperand(0).getValueType(); 24708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (cast<ConstantSDNode>(Node->getOperand(1))->getZExtValue()) { 24718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 1 -> Hi 24728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRL, dl, OpTy, Node->getOperand(0), 24738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OpTy.getSizeInBits()/2, 24748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TLI.getShiftAmountTy())); 24758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), Tmp1); 24768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 24778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 0 -> Lo 24788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), 24798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 24808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 24828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24843f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKSAVE: 24853f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // Expand to CopyFromReg if the target set 24863f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // StackPointerRegisterToSaveRestore. 24873f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 2488775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, SP, 2489775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 24903f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Results[0].getValue(1)); 24913f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } else { 2492775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getUNDEF(Node->getValueType(0))); 24933f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Node->getOperand(0)); 24943f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 24953f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 24963f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKRESTORE: 2497775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // Expand to CopyToReg if the target set 2498775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // StackPointerRegisterToSaveRestore. 2499775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 2500775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyToReg(Node->getOperand(0), dl, SP, 2501775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1))); 2502775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 2503775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Node->getOperand(0)); 2504775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 25053f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 25064bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::FCOPYSIGN: 2507775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFCOPYSIGN(Node)); 25084bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 2509f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEG: 2510f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FNEG(X) -> Y = SUB -0.0, X 2511f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getConstantFP(-0.0, Node->getValueType(0)); 2512f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(ISD::FSUB, dl, Node->getValueType(0), Tmp1, 2513f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Node->getOperand(0)); 2514f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2515f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2516f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FABS: { 2517f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FABS(X) -> Y = (X >u 0.0) ? X : fneg(X). 2518e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2519f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = Node->getOperand(0); 2520f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp2 = DAG.getConstantFP(0.0, VT); 2521775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(Tmp1.getValueType()), 2522f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1, Tmp2, ISD::SETUGT); 2523775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp3 = DAG.getNode(ISD::FNEG, dl, VT, Tmp1); 2524775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SELECT, dl, VT, Tmp2, Tmp1, Tmp3); 2525f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2526f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2527f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 2528f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSQRT: 2529775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::SQRT_F32, RTLIB::SQRT_F64, 2530775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::SQRT_F80, RTLIB::SQRT_PPCF128)); 2531f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2532f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSIN: 2533775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::SIN_F32, RTLIB::SIN_F64, 2534775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::SIN_F80, RTLIB::SIN_PPCF128)); 2535f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2536f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCOS: 2537775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::COS_F32, RTLIB::COS_F64, 2538775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::COS_F80, RTLIB::COS_PPCF128)); 2539f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2540f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG: 2541775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG_F32, RTLIB::LOG_F64, 2542775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG_F80, RTLIB::LOG_PPCF128)); 2543f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2544f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG2: 2545775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG2_F32, RTLIB::LOG2_F64, 2546775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG2_F80, RTLIB::LOG2_PPCF128)); 2547f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2548f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG10: 2549775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG10_F32, RTLIB::LOG10_F64, 2550775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG10_F80, RTLIB::LOG10_PPCF128)); 2551f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2552f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP: 2553775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP_F32, RTLIB::EXP_F64, 2554775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::EXP_F80, RTLIB::EXP_PPCF128)); 2555f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2556f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP2: 2557775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP2_F32, RTLIB::EXP2_F64, 2558775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::EXP2_F80, RTLIB::EXP2_PPCF128)); 2559f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2560f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FTRUNC: 2561775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::TRUNC_F32, RTLIB::TRUNC_F64, 2562775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::TRUNC_F80, RTLIB::TRUNC_PPCF128)); 2563f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2564f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FFLOOR: 2565775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::FLOOR_F32, RTLIB::FLOOR_F64, 2566775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::FLOOR_F80, RTLIB::FLOOR_PPCF128)); 2567f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2568f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCEIL: 2569775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::CEIL_F32, RTLIB::CEIL_F64, 2570775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::CEIL_F80, RTLIB::CEIL_PPCF128)); 2571f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2572f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FRINT: 2573775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::RINT_F32, RTLIB::RINT_F64, 2574775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::RINT_F80, RTLIB::RINT_PPCF128)); 2575f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2576f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEARBYINT: 2577775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::NEARBYINT_F32, 2578775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_F64, 2579775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_F80, 2580775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_PPCF128)); 2581f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2582f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOWI: 2583775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::POWI_F32, RTLIB::POWI_F64, 2584775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::POWI_F80, RTLIB::POWI_PPCF128)); 2585f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2586f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOW: 2587775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::POW_F32, RTLIB::POW_F64, 2588775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::POW_F80, RTLIB::POW_PPCF128)); 2589f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2590f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FDIV: 2591775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::DIV_F32, RTLIB::DIV_F64, 2592775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::DIV_F80, RTLIB::DIV_PPCF128)); 2593f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2594f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FREM: 2595775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::REM_F32, RTLIB::REM_F64, 2596775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::REM_F80, RTLIB::REM_PPCF128)); 2597f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2598f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::ConstantFP: { 2599f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman ConstantFPSDNode *CFP = cast<ConstantFPSDNode>(Node); 2600775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // Check to see if this FP immediate is already legal. 2601775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // If this is a legal constant, turn it into a TargetConstantFP node. 2602a1eaa3c52b75d4fe2bcd4f7c52e56c405ee91d3cEvan Cheng if (TLI.isFPImmLegal(CFP->getValueAPF(), Node->getValueType(0))) 2603775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(SDValue(Node, 0)); 2604f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 2605775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandConstantFP(CFP, true, DAG, TLI)); 2606f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2607f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 260826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EHSELECTION: { 260926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionSelectorRegister(); 261026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 2611775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(1), dl, Reg, 2612775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 261326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 261426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 261526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 261626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EXCEPTIONADDR: { 261726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionAddressRegister(); 261826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 2619775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, Reg, 2620775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 262126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 262226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 262326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 262426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::SUB: { 2625e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 262626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ISD::ADD, VT) && 262726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman TLI.isOperationLegalOrCustom(ISD::XOR, VT) && 262826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "Don't know how to expand this subtraction!"); 262926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ISD::XOR, dl, VT, Node->getOperand(1), 263026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman DAG.getConstant(APInt::getAllOnesValue(VT.getSizeInBits()), VT)); 2631775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::ADD, dl, VT, Tmp2, DAG.getConstant(1, VT)); 2632775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::ADD, dl, VT, Node->getOperand(0), Tmp1)); 263326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 263426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 2635f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UREM: 2636f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SREM: { 2637e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 263826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 2639f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SREM; 2640f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivOpc = isSigned ? ISD::SDIV : ISD::UDIV; 2641f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 2642f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(0); 2643f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp3 = Node->getOperand(1); 26443be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) { 26453be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Tmp2, Tmp3).getValue(1); 26463be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } else if (TLI.isOperationLegalOrCustom(DivOpc, VT)) { 2647f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // X % Y -> X-X/Y*Y 2648f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivOpc, dl, VT, Tmp2, Tmp3); 2649f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, VT, Tmp1, Tmp3); 2650f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, Tmp2, Tmp1); 2651f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else if (isSigned) { 26528983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, true, 26538983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SREM_I8, 26548983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SREM_I16, RTLIB::SREM_I32, 2655f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::SREM_I64, RTLIB::SREM_I128); 2656f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else { 26578983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, false, 26588983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UREM_I8, 26598983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UREM_I16, RTLIB::UREM_I32, 266026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::UREM_I64, RTLIB::UREM_I128); 2661f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 266226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 266326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 266426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 2665f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UDIV: 2666f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SDIV: { 2667f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SDIV; 2668f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 2669e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 267026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 2671f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) 2672f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Node->getOperand(0), 2673f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(1)); 2674f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else if (isSigned) 26758983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, true, 26768983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SDIV_I8, 26778983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SDIV_I16, RTLIB::SDIV_I32, 267826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::SDIV_I64, RTLIB::SDIV_I128); 2679f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 26808983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, false, 26818983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UDIV_I8, 26828983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UDIV_I16, RTLIB::UDIV_I32, 2683f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::UDIV_I64, RTLIB::UDIV_I128); 268426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 268526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 268626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 268726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHU: 268826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHS: { 268926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned ExpandOpcode = Node->getOpcode() == ISD::MULHU ? ISD::UMUL_LOHI : 269026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman ISD::SMUL_LOHI; 2691e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 269226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 269326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ExpandOpcode, VT) && 269426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "If this wasn't legal, it shouldn't have been created!"); 269526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ExpandOpcode, dl, VTs, Node->getOperand(0), 269626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getOperand(1)); 269726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1.getValue(1)); 269826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 269926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 270026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MUL: { 2701e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 270226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 270326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // See if multiply or divide can be lowered using two-result operations. 270426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // We just need the low half of the multiply; try both the signed 270526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // and unsigned forms. If the target supports both SMUL_LOHI and 270626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // UMUL_LOHI, form a preference by checking which forms of plain 270726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // MULH it supports. 270826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasSMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::SMUL_LOHI, VT); 270926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasUMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::UMUL_LOHI, VT); 271026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHS = TLI.isOperationLegalOrCustom(ISD::MULHS, VT); 271126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHU = TLI.isOperationLegalOrCustom(ISD::MULHU, VT); 271226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned OpToUse = 0; 271326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (HasSMUL_LOHI && !HasMULHS) { 271426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 271526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI && !HasMULHU) { 271626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 271726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasSMUL_LOHI) { 271826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 271926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI) { 272026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 272126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 272226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (OpToUse) { 2723775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(OpToUse, dl, VTs, Node->getOperand(0), 2724775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1))); 272526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 272626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 27278983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, false, 27288983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::MUL_I8, 27298983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::MUL_I16, RTLIB::MUL_I32, 273026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::MUL_I64, RTLIB::MUL_I128); 273126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 273226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 273326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 27344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SADDO: 27354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SSUBO: { 27364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 27374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 27384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::SADDO ? 27394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 27404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 27414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 2742122d06de7482dcb39e7dbcbfe302e39cc55627e5Bill Wendling EVT OType = Node->getValueType(1); 2743775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling 27444bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Zero = DAG.getConstant(0, LHS.getValueType()); 27454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // LHSSign -> LHS >= 0 27474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RHSSign -> RHS >= 0 27484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // SumSign -> Sum >= 0 27494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 27504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Add: 27514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign == RHSSign) && (LHSSign != SumSign) 27524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Sub: 27534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign != RHSSign) && (LHSSign != SumSign) 27544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 27554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHSSign = DAG.getSetCC(dl, OType, LHS, Zero, ISD::SETGE); 27564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHSSign = DAG.getSetCC(dl, OType, RHS, Zero, ISD::SETGE); 27574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignsMatch = DAG.getSetCC(dl, OType, LHSSign, RHSSign, 27584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Node->getOpcode() == ISD::SADDO ? 27594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETEQ : ISD::SETNE); 27604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSign = DAG.getSetCC(dl, OType, Sum, Zero, ISD::SETGE); 27624bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSignNE = DAG.getSetCC(dl, OType, LHSSign, SumSign, ISD::SETNE); 27634bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Cmp = DAG.getNode(ISD::AND, dl, OType, SignsMatch, SumSignNE); 27654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Cmp); 27664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 27674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 27684bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::UADDO: 27694bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::USUBO: { 27704bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 27714bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 27724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::UADDO ? 27734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 27744bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 27754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 2776775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getSetCC(dl, Node->getValueType(1), Sum, LHS, 2777775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOpcode () == ISD::UADDO ? 2778775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling ISD::SETULT : ISD::SETUGT)); 27794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 27804bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2781db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::UMULO: 2782db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::SMULO: { 2783e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2784db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue LHS = Node->getOperand(0); 2785db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue RHS = Node->getOperand(1); 2786db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue BottomHalf; 2787db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue TopHalf; 2788ec9d8b00470b2ddabef4e1b58b4f60d69995d8ceNuno Lopes static const unsigned Ops[2][3] = 2789db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { { ISD::MULHU, ISD::UMUL_LOHI, ISD::ZERO_EXTEND }, 2790db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { ISD::MULHS, ISD::SMUL_LOHI, ISD::SIGN_EXTEND }}; 2791db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman bool isSigned = Node->getOpcode() == ISD::SMULO; 2792db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (TLI.isOperationLegalOrCustom(Ops[isSigned][0], VT)) { 2793db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::MUL, dl, VT, LHS, RHS); 2794db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(Ops[isSigned][0], dl, VT, LHS, RHS); 2795db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else if (TLI.isOperationLegalOrCustom(Ops[isSigned][1], VT)) { 2796db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(Ops[isSigned][1], dl, DAG.getVTList(VT, VT), LHS, 2797db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS); 2798db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = BottomHalf.getValue(1); 279923b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson } else if (TLI.isTypeLegal(EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits() * 2))) { 280023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT WideVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits() * 2); 2801db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman LHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, LHS); 2802db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, RHS); 2803db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, WideVT, LHS, RHS); 2804db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 2805db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(0)); 2806db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 2807db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(1)); 2808db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else { 2809db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // FIXME: We should be able to fall back to a libcall with an illegal 2810f451cb870efcf9e0302d25ed05f4cac6bb494e42Dan Gohman // type in some cases. 2811db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // Also, we can fall back to a division in some cases, but that's a big 2812db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // performance hit in the general case. 2813c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Don't know how to expand this operation yet!"); 2814db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2815db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (isSigned) { 2816db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getConstant(VT.getSizeInBits() - 1, TLI.getShiftAmountTy()); 2817db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::SRA, dl, VT, BottomHalf, Tmp1); 2818db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, Tmp1, 2819db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman ISD::SETNE); 2820db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else { 2821db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, 2822db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getConstant(0, VT), ISD::SETNE); 2823db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2824db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(BottomHalf); 2825db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(TopHalf); 2826db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman break; 2827db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2828f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BUILD_PAIR: { 2829e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PairTy = Node->getValueType(0); 2830f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, PairTy, Node->getOperand(0)); 2831f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = DAG.getNode(ISD::ANY_EXTEND, dl, PairTy, Node->getOperand(1)); 2832775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2 = DAG.getNode(ISD::SHL, dl, PairTy, Tmp2, 2833f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(PairTy.getSizeInBits()/2, 2834f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman TLI.getShiftAmountTy())); 2835775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::OR, dl, PairTy, Tmp1, Tmp2)); 2836f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2837f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2838509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::SELECT: 2839509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2840509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 2841509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = Node->getOperand(2); 2842775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (Tmp1.getOpcode() == ISD::SETCC) { 2843509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1.getOperand(0), Tmp1.getOperand(1), 2844509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, 2845509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<CondCodeSDNode>(Tmp1.getOperand(2))->get()); 2846775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 2847509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1, 2848509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(0, Tmp1.getValueType()), 2849509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, ISD::SETNE); 2850775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 2851509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 2852509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 28534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::BR_JT: { 28544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Node->getOperand(0); 28554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Table = Node->getOperand(1); 28564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Index = Node->getOperand(2); 28574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 2858e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PTy = TLI.getPointerTy(); 2859071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner 2860071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner const TargetData &TD = *TLI.getTargetData(); 2861071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner unsigned EntrySize = 2862071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner DAG.getMachineFunction().getJumpTableInfo()->getEntrySize(TD); 2863071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner 2864071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner Index = DAG.getNode(ISD::MUL, dl, PTy, 28654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Index, DAG.getConstant(EntrySize, PTy)); 28664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Addr = DAG.getNode(ISD::ADD, dl, PTy, Index, Table); 28674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 286823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), EntrySize * 8); 28694bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LD = DAG.getExtLoad(ISD::SEXTLOAD, dl, PTy, Chain, Addr, 28701e559443a17d1b335f697551c6263ba60d5dd827David Greene PseudoSourceValue::getJumpTable(), 0, MemVT, 28711e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 28724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = LD; 28734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (TLI.getTargetMachine().getRelocationModel() == Reloc::PIC_) { 28744bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // For PIC, the sequence is: 2875775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // BRIND(load(Jumptable + index) + RelocBase) 28764bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RelocBase can be JumpTable, GOT or some sort of global base. 28774bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = DAG.getNode(ISD::ADD, dl, PTy, Addr, 28784bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getPICJumpTableRelocBase(Table, DAG)); 28794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2880825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BRIND, dl, MVT::Other, LD.getValue(1), Addr); 28814bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 28824bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 28834bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2884f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BRCOND: 2885f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Expand brcond's setcc into its constituent parts and create a BR_CC 2886f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Node. 2887f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = Node->getOperand(0); 2888f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(1); 2889775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (Tmp2.getOpcode() == ISD::SETCC) { 2890825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, 2891f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1, Tmp2.getOperand(2), 2892f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2.getOperand(0), Tmp2.getOperand(1), 2893f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 2894775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 2895825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, Tmp1, 2896f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getCondCode(ISD::SETNE), Tmp2, 2897f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(0, Tmp2.getValueType()), 2898f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 2899775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 2900f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(Tmp1); 2901f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2902ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 2903ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = Node->getOperand(0); 2904ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp2 = Node->getOperand(1); 2905ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp3 = Node->getOperand(2); 2906775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling LegalizeSetCCCondCode(Node->getValueType(0), Tmp1, Tmp2, Tmp3, dl); 2907ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 2908ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // If we expanded the SETCC into an AND/OR, return the new node 2909ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman if (Tmp2.getNode() == 0) { 2910ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 2911ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 2912ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 2913ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 2914ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // Otherwise, SETCC for the given comparison type must be completely 2915ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // illegal; expand it into a SELECT_CC. 2916e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2917ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, VT, Tmp1, Tmp2, 2918ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman DAG.getConstant(1, VT), DAG.getConstant(0, VT), Tmp3); 2919ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 2920ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 2921ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 2922bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::SELECT_CC: { 2923bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // LHS 2924bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(1); // RHS 2925bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(2); // True 2926bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(3); // False 2927bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue CC = Node->getOperand(4); 2928bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2929bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp1.getValueType()), 2930775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1, Tmp2, CC, dl); 2931bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2932bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp2.getNode() && "Can't legalize SELECT_CC with legal condition!"); 2933bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = DAG.getConstant(0, Tmp1.getValueType()); 2934bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman CC = DAG.getCondCode(ISD::SETNE); 2935bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, Node->getValueType(0), Tmp1, Tmp2, 2936bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Tmp4, CC); 2937bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 2938bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 2939bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 2940bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::BR_CC: { 2941bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // Chain 2942bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(2); // LHS 2943bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(3); // RHS 2944bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(1); // CC 2945bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2946bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp2.getValueType()), 2947775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2, Tmp3, Tmp4, dl); 2948bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 2949bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2950bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp3.getNode() && "Can't legalize BR_CC with legal condition!"); 2951bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = DAG.getConstant(0, Tmp2.getValueType()); 2952bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = DAG.getCondCode(ISD::SETNE); 2953bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::BR_CC, dl, Node->getValueType(0), Tmp1, Tmp4, Tmp2, 2954bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Node->getOperand(4)); 2955bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 2956bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 2957bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 29583f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GLOBAL_OFFSET_TABLE: 29593f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalAddress: 29603f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalTLSAddress: 29613f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ExternalSymbol: 29623f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ConstantPool: 29633f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::JumpTable: 29643f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_W_CHAIN: 29653f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_WO_CHAIN: 29663f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_VOID: 29673f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // FIXME: Custom lowering for these operations shouldn't return null! 29683f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 29693f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(SDValue(Node, i)); 29703f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 29718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 29738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::PromoteNode(SDNode *Node, 29748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 2975e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OVT = Node->getValueType(0); 29768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::UINT_TO_FP || 2977a64eb92fe305424ebde2e3de2b12160b8bf76047Eli Friedman Node->getOpcode() == ISD::SINT_TO_FP || 2978775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOpcode() == ISD::SETCC) { 29798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT = Node->getOperand(0).getValueType(); 2980775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 2981e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), OVT); 29828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 2983509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SDValue Tmp1, Tmp2, Tmp3; 29848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 29858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 29868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 29878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 29888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Zero extend the argument. 29898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0)); 29908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Perform the larger operation. 29919a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1); 29928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::CTTZ) { 29938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman //if Tmp1 == sizeinbits(NVT) then Tmp1 = sizeinbits(Old VT) 29949a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), 29958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, DAG.getConstant(NVT.getSizeInBits(), NVT), 29968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ISD::SETEQ); 29978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, 29988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OVT.getSizeInBits(), NVT), Tmp1); 29998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else if (Node->getOpcode() == ISD::CTLZ) { 30008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Tmp1 = Tmp1 - (sizeinbits(NVT) - sizeinbits(Old VT)) 30018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, NVT, Tmp1, 30028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(NVT.getSizeInBits() - 30038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT.getSizeInBits(), NVT)); 30048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 3005775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::TRUNCATE, dl, OVT, Tmp1)); 30068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 30078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: { 30088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman unsigned DiffBits = NVT.getSizeInBits() - OVT.getSizeInBits(); 3009167bea71a4bd19329a218f5e1bd8facfd90a0cf9Bill Wendling Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0)); 3010775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::BSWAP, dl, NVT, Tmp1); 3011775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SRL, dl, NVT, Tmp1, 3012775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getConstant(DiffBits, TLI.getShiftAmountTy())); 3013775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 30148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 30158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 30168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: 30178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_SINT: 30188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalFP_TO_INT(Node->getOperand(0), Node->getValueType(0), 30198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::FP_TO_SINT, dl); 30208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 30218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 30228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 30238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 30248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalINT_TO_FP(Node->getOperand(0), Node->getValueType(0), 30258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::SINT_TO_FP, dl); 30268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 30278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 3028f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::AND: 3029f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::OR: 3030c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::XOR: { 3031c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen unsigned ExtOp, TruncOp; 3032c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen if (OVT.isVector()) { 3033c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen ExtOp = ISD::BIT_CONVERT; 3034c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen TruncOp = ISD::BIT_CONVERT; 3035c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } else if (OVT.isInteger()) { 3036c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen ExtOp = ISD::ANY_EXTEND; 3037c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen TruncOp = ISD::TRUNCATE; 3038c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } else { 3039c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen llvm_report_error("Cannot promote logic operation"); 3040c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3041c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Promote each of the values to the new type. 3042c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 3043c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3044c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Perform the larger operation, then convert back 3045775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1, Tmp2); 3046775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(TruncOp, dl, OVT, Tmp1)); 3047f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3048c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3049c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::SELECT: { 3050509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned ExtOp, TruncOp; 30514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Node->getValueType(0).isVector()) { 3052509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::BIT_CONVERT; 3053509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::BIT_CONVERT; 30544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else if (Node->getValueType(0).isInteger()) { 3055509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::ANY_EXTEND; 3056509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::TRUNCATE; 3057509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } else { 3058509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::FP_EXTEND; 3059509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::FP_ROUND; 3060509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3061509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 3062509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Promote each of the values to the new type. 3063509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3064509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(2)); 3065509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Perform the larger operation, then round down. 3066509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp1, Tmp2, Tmp3); 3067509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (TruncOp != ISD::FP_ROUND) 3068775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1); 3069509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 3070775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1, 3071509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(0)); 3072775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 3073509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3074c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3075509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 3076509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 3077509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 3078509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3079509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Cast the two input vectors. 3080509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(0)); 3081509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(1)); 3082509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3083509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Convert the shuffle mask to the right # elements. 3084775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = ShuffleWithNarrowerEltType(NVT, OVT, dl, Tmp1, Tmp2, Mask); 3085775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, OVT, Tmp1); 3086509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3087509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3088509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3089ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 309078d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen unsigned ExtOp = ISD::FP_EXTEND; 309178d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen if (NVT.isInteger()) { 309278d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ISD::CondCode CCCode = 309378d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen cast<CondCodeSDNode>(Node->getOperand(2))->get(); 309478d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ExtOp = isSignedIntSetCC(CCCode) ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND; 3095ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 309678d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 309778d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3098ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(DAG.getNode(ISD::SETCC, dl, Node->getValueType(0), 3099ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1, Tmp2, Node->getOperand(2))); 3100ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3101ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 31028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 31038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 31048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 31053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// SelectionDAG::Legalize - This is the entry point for the file. 31063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 3107714efc63d4319b771d89a95aa7a42d400f03d8c9Dan Gohmanvoid SelectionDAG::Legalize(CodeGenOpt::Level OptLevel) { 31083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// run - This is the main entry point to this class. 31093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 31101fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(*this, OptLevel).LegalizeDAG(); 31113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 31123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 3113