LegalizeDAG.cpp revision 3d2125c9dbac695c93f42c0f59fd040e413fd711
13e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===-- LegalizeDAG.cpp - Implement SelectionDAG::Legalize ----------------===// 2edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman// 33e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// The LLVM Compiler Infrastructure 43e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 54ee451de366474b9c228b4e5fa573795a715216dChris Lattner// This file is distributed under the University of Illinois Open Source 64ee451de366474b9c228b4e5fa573795a715216dChris Lattner// License. See LICENSE.TXT for details. 7edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman// 83e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 93e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// This file implements the SelectionDAG::Legalize method. 113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 143d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng#include "llvm/Analysis/DebugInfo.h" 153d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng#include "llvm/CodeGen/Analysis.h" 163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/CodeGen/MachineFunction.h" 1745b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner#include "llvm/CodeGen/MachineFrameInfo.h" 18acd80ac7bb19f8bdfa55336d567c9ecbe695c8b8Jim Laskey#include "llvm/CodeGen/MachineJumpTableInfo.h" 1984bc5427d6883f73cfeae3da640acd011d35c006Chris Lattner#include "llvm/CodeGen/MachineModuleInfo.h" 2069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman#include "llvm/CodeGen/PseudoSourceValue.h" 213d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng#include "llvm/CodeGen/SelectionDAG.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" 27adf6a965a321372c640845407195594835921eb4Chris Lattner#include "llvm/CallingConv.h" 283e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/Constants.h" 29c10305743c313558405079452138f03124e87581Reid Spencer#include "llvm/DerivedTypes.h" 3086e6cb924b85e7a288a4d8bfde5d1a8fb9810c88Bill Wendling#include "llvm/Function.h" 3183489bb7700c69b7a4a8da59365c42d3f5c8129bDevang Patel#include "llvm/GlobalVariable.h" 329adc0abad3c3ed40a268ccbcee0c74cb9e1359feOwen Anderson#include "llvm/LLVMContext.h" 335e46a19ec848cd4fc9649bd5170c43d9e657668cChris Lattner#include "llvm/Support/CommandLine.h" 34993aacedfdc3f156f667b4efa280ee79eab3b898David Greene#include "llvm/Support/Debug.h" 35e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach#include "llvm/Support/ErrorHandling.h" 36dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands#include "llvm/Support/MathExtras.h" 3745cfe545ec8177262dabc70580ce05feaa1c3880Chris Lattner#include "llvm/Support/raw_ostream.h" 387971514755a08ec156a1b9c0f7f05d67919c56b7Chris Lattner#include "llvm/ADT/DenseMap.h" 39f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner#include "llvm/ADT/SmallVector.h" 4000755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner#include "llvm/ADT/SmallPtrSet.h" 413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerusing namespace llvm; 423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// SelectionDAGLegalize - This takes an arbitrary SelectionDAG as input and 453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// hacks on it until the target machine can handle it. This involves 463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating value sizes the machine cannot handle (promoting small sizes to 473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// large sizes or splitting up large values into small values) as well as 483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating operations the machine cannot handle. 493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// This code also does a small amount of optimization and recognition of idioms 513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// as part of its processing. For example, if a target does not support a 523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 'setcc' instruction efficiently, but does support 'brcc' instruction, this 533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// will attempt merge setcc and brc instructions into brcc's. 543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnernamespace { 566726b6d75a8b679068a58cb954ba97cf9d1690baNick Lewyckyclass SelectionDAGLegalize { 5755e59c186303ff02c0be7429da3b1b36c347f164Dan Gohman const TargetMachine &TM; 58d858e90f039f5fcdc2fa93035e911a5a9505cc50Dan Gohman const TargetLowering &TLI; 593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SelectionDAG &DAG; 6098a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel; 613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 626831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Libcall insertion helpers. 63fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 646831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// LastCALLSEQ_END - This keeps track of the CALLSEQ_END node that has been 656831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// legalized. We use this to ensure that calls are properly serialized 666831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// against each other, including inserted libcalls. 67475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LastCALLSEQ_END; 68fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 696831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// IsLegalizingCall - This member is used *only* for purposes of providing 70fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel /// helpful assertions that a libcall isn't created while another call is 716831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// being legalized (which could lead to non-serialized call sequences). 726831a815999dde4cf801e2076e66b4943964daf2Chris Lattner bool IsLegalizingCall; 73fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner enum LegalizeAction { 7568a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Legal, // The target natively supports this operation. 7668a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Promote, // This operation should be executed in a larger type. 77d74ea2bbd8bb630331f35ead42d385249bd42af8Chris Lattner Expand // Try to expand this to other ops, otherwise use a libcall. 783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner }; 79fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// ValueTypeActions - This is a bitvector that contains two bits for each 813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// value type, where the two bits correspond to the LegalizeAction enum. 823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// This can be queried with "getTypeAction(VT)". 8368a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner TargetLowering::ValueTypeActionImpl ValueTypeActions; 843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// LegalizedNodes - For nodes that are of legal width, and that have more 863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// than one use, this map indicates what regularized operand to use. This 873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// allows us to avoid legalizing the same thing more than once. 88475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue> LegalizedNodes; 893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 90475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void AddLegalizedOperand(SDValue From, SDValue To) { 9169a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(From, To)); 9269a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner // If someone requests legalization of the new node, return itself. 9369a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner if (From != To) 9469a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(To, To)); 958afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner } 968afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner 973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerpublic: 981fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(SelectionDAG &DAG, CodeGenOpt::Level ol); 993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// getTypeAction - Return how we should legalize values of this type, either 1013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// it is already legal or we need to expand it into multiple registers of 1023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// smaller integer type, or we need to promote it to a larger type. 103e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson LegalizeAction getTypeAction(EVT VT) const { 104aafe626c7fa9f99150cccd27d0151a2cf7c8c00bChris Lattner return (LegalizeAction)ValueTypeActions.getTypeAction(VT); 1053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// isTypeLegal - Return true if this type is legal on this target. 1083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 109e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson bool isTypeLegal(EVT VT) const { 1103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return getTypeAction(VT) == Legal; 1113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner void LegalizeDAG(); 1143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 115456a93afcec7740c45cafa8354317f7b17987a6dChris Lattnerprivate: 116c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// LegalizeOp - We know that the specified value has a legal type. 117c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// Recursively ensure that the operands have legal types, then return the 118c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// result. 119475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LegalizeOp(SDValue O); 120fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1217ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue OptimizeFloatStore(StoreSDNode *ST); 1227ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 1236867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// PerformInsertVectorEltInMemory - Some target cannot handle a variable 1246867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 1256867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// is necessary to spill the vector being inserted into to memory, perform 1266867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// the insert there, and then read the result back. 127475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue PerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, 1283f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 1293f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, 1303f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 131826695281344e3a4c4d44d73dd155107aafd689bDan Gohman 1325a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1335a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// performs the same shuffe in terms of order or result bytes, but on a type 1345a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// whose vector element type is narrower than the original shuffle type. 1355a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 136e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl, 1376e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach SDValue N1, SDValue N2, 1385a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SmallVectorImpl<int> &Mask) const; 139fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 140c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner bool LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 14100755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo); 1426831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 143e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson void LegalizeSetCCCondCode(EVT VT, SDValue &LHS, SDValue &RHS, SDValue &CC, 144775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DebugLoc dl); 145fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 14647b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman SDValue ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, bool isSigned); 147e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach std::pair<SDValue, SDValue> ExpandChainLibCall(RTLIB::Libcall LC, 148e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 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 178e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach std::pair<SDValue, SDValue> ExpandAtomic(SDNode *Node); 179e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 1808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void ExpandNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void PromoteNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner}; 1833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1855a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1865a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// performs the same shuffe in terms of order or result bytes, but on a type 1875a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// whose vector element type is narrower than the original shuffle type. 1889008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman/// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 1896e9926108a69efbc11f1cadf947e98500e4d4228Jim GrosbachSDValue 1906e9926108a69efbc11f1cadf947e98500e4d4228Jim GrosbachSelectionDAGLegalize::ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl, 1915a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue N1, SDValue N2, 1929008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVectorImpl<int> &Mask) const { 1935a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumMaskElts = VT.getVectorNumElements(); 1945a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumDestElts = NVT.getVectorNumElements(); 1959008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman unsigned NumEltsGrowth = NumDestElts / NumMaskElts; 1969008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1979008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(NumEltsGrowth && "Cannot promote to vector type with fewer elts!"); 1989008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1999008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman if (NumEltsGrowth == 1) 2009008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &Mask[0]); 2016e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach 2029008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVector<int, 8> NewMask; 2035a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman for (unsigned i = 0; i != NumMaskElts; ++i) { 2049008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman int Idx = Mask[i]; 2059008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman for (unsigned j = 0; j != NumEltsGrowth; ++j) { 2066e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach if (Idx < 0) 2079008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(-1); 2089008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman else 2099008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(Idx * NumEltsGrowth + j); 2104352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner } 21115684b29552393553524171bff1913e750f390f8Rafael Espindola } 2125a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman assert(NewMask.size() == NumDestElts && "Non-integer NumEltsGrowth?"); 2139008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(TLI.isShuffleMaskLegal(NewMask, NVT) && "Shuffle not legal?"); 2149008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &NewMask[0]); 2154352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 2164352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 2175aa4977fba97e816b5735f0bc53f16a46b24de63Bill WendlingSelectionDAGLegalize::SelectionDAGLegalize(SelectionDAG &dag, 2181fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman CodeGenOpt::Level ol) 21955e59c186303ff02c0be7429da3b1b36c347f164Dan Gohman : TM(dag.getTarget()), TLI(dag.getTargetLoweringInfo()), 22055e59c186303ff02c0be7429da3b1b36c347f164Dan Gohman DAG(dag), OptLevel(ol), 2211fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman ValueTypeActions(TLI.getValueTypeActions()) { 222825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE && 2233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Too many value types for ValueTypeActions to hold!"); 2243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2253e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2263e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAGLegalize::LegalizeDAG() { 2276831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LastCALLSEQ_END = DAG.getEntryNode(); 2286831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = false; 229e5ab34e05d701da042619bf540046efc3c7bc41fMon P Wang 230ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // The legalize process is inherently a bottom-up recursive process (users 231ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // legalize their uses before themselves). Given infinite stack space, we 232ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // could just start legalizing on the root and traverse the whole graph. In 233ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // practice however, this causes us to run out of stack space on large basic 23432fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // blocks. To avoid this problem, compute an ordering of the nodes where each 23532fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // node is only legalized after all of its operands are legalized. 236f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman DAG.AssignTopologicalOrder(); 237f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman for (SelectionDAG::allnodes_iterator I = DAG.allnodes_begin(), 2387896c9f436a4eda5ec15e882a7505ba482a2fcd0Chris Lattner E = prior(DAG.allnodes_end()); I != llvm::next(E); ++I) 239b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(I, 0)); 24032fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner 24132fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // Finally, it's possible the root changed. Get the new root. 242475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue OldRoot = DAG.getRoot(); 24332fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner assert(LegalizedNodes.count(OldRoot) && "Root didn't get legalized?"); 24432fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner DAG.setRoot(LegalizedNodes[OldRoot]); 2453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LegalizedNodes.clear(); 2473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remove dead nodes now. 249190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner DAG.RemoveDeadNodes(); 2503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2526831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 2536831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// FindCallEndFromCallStart - Given a chained node that is part of a call 2546831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_END node that terminates the call sequence. 2556831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallEndFromCallStart(SDNode *Node) { 2566831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_END) 2576831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Node; 2586831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->use_empty()) 2596831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; // No CallSeqEnd 260fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2616831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // The chain is usually at the end. 262475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue TheChain(Node, Node->getNumValues()-1); 263825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) { 2646831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Sometimes it's at the beginning. 265475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, 0); 266825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) { 2676831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Otherwise, hunt for it. 2686831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 1, e = Node->getNumValues(); i != e; ++i) 269825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Node->getValueType(i) == MVT::Other) { 270475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, i); 2716831a815999dde4cf801e2076e66b4943964daf2Chris Lattner break; 2726831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 273fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 274fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, we walked into a node without a chain. 275825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) 2766831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2776831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2786831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 279fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2806831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (SDNode::use_iterator UI = Node->use_begin(), 2816831a815999dde4cf801e2076e66b4943964daf2Chris Lattner E = Node->use_end(); UI != E; ++UI) { 282fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2836831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Make sure to only follow users of our token chain. 2848968450305c28444edc3c272d8752a8db0c2f34aDan Gohman SDNode *User = *UI; 2856831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) 2866831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (User->getOperand(i) == TheChain) 2876831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (SDNode *Result = FindCallEndFromCallStart(User)) 2886831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 2896831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2906831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2916831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 2926831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 293fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// FindCallStartFromCallEnd - Given a chained node that is part of a call 2946831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_START node that initiates the call sequence. 2956831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallStartFromCallEnd(SDNode *Node) { 2966831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(Node && "Didn't find callseq_start for a call??"); 2976831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_START) return Node; 298fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 299825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert(Node->getOperand(0).getValueType() == MVT::Other && 3006831a815999dde4cf801e2076e66b4943964daf2Chris Lattner "Node doesn't have a token chain argument!"); 301ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif return FindCallStartFromCallEnd(Node->getOperand(0).getNode()); 3026831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 3036831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3046831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// LegalizeAllNodesNotLeadingTo - Recursively walk the uses of N, looking to 305fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// see if any uses can reach Dest. If no dest operands can get to dest, 3066831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// legalize them, legalize ourself, and return false, otherwise, return true. 307c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 308c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// Keep track of the nodes we fine that actually do lead to Dest in 309c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// NodesLeadingTo. This avoids retraversing them exponential number of times. 310c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 311c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattnerbool SelectionDAGLegalize::LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 31200755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo) { 3136831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (N == Dest) return true; // N certainly leads to Dest :) 314fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 315c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // If we've already processed this node and it does lead to Dest, there is no 316c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // need to reprocess it. 317c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (NodesLeadingTo.count(N)) return true; 318fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3196831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the first result of this node has been already legalized, then it cannot 3206831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // reach N. 32174807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman if (LegalizedNodes.count(SDValue(N, 0))) return false; 322fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3236831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node has not already been legalized. Check and legalize all 3246831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // operands. If none lead to Dest, then we can legalize this node. 3256831a815999dde4cf801e2076e66b4943964daf2Chris Lattner bool OperandsLeadToDest = false; 3266831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) 3276831a815999dde4cf801e2076e66b4943964daf2Chris Lattner OperandsLeadToDest |= // If an operand leads to Dest, so do we. 3286e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach LegalizeAllNodesNotLeadingTo(N->getOperand(i).getNode(), Dest, 3296e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach NodesLeadingTo); 3306831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 331c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (OperandsLeadToDest) { 332c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo.insert(N); 333c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner return true; 334c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 3356831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3366831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node looks safe, legalize it and return false. 337b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(N, 0)); 3386831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return false; 3396831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 3406831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3419f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// ExpandConstantFP - Expands the ConstantFP node to an integer constant or 3429f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// a load from the constant pool. 343475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanstatic SDValue ExpandConstantFP(ConstantFPSDNode *CFP, bool UseCP, 3440d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman SelectionDAG &DAG, const TargetLowering &TLI) { 345004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng bool Extend = false; 34633c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen DebugLoc dl = CFP->getDebugLoc(); 347004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 348004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // If a FP immediate is precise when represented as a float and if the 349004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // target can do an extending load from float to double, we put it into 350004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // the constant pool as a float, even if it's is statically typed as a 351aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // double. This shrinks FP constants and canonicalizes them for targets where 352aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // an FP extending load is the same cost as a normal load (such as on the x87 353aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // fp stack or PPC FP unit). 354e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = CFP->getValueType(0); 3554fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman ConstantFP *LLVMC = const_cast<ConstantFP*>(CFP->getConstantFPValue()); 3569f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng if (!UseCP) { 357825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert((VT == MVT::f64 || VT == MVT::f32) && "Invalid type expansion"); 3587111b02c734c992b8c97d9918118768026dad79eDale Johannesen return DAG.getConstant(LLVMC->getValueAPF().bitcastToAPInt(), 359825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (VT == MVT::f64) ? MVT::i64 : MVT::i32); 360279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng } 361279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng 362e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OrigVT = VT; 363e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SVT = VT; 364825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson while (SVT != MVT::f32) { 365825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SVT = (MVT::SimpleValueType)(SVT.getSimpleVT().SimpleTy - 1); 3667720cb3823d5b5868f9b88b0127277820edcb562Dan Gohman if (ConstantFPSDNode::isValueValidForType(SVT, CFP->getValueAPF()) && 367ef12057737229452c17983faa20857dba441ef05Evan Cheng // Only do this if the target has a native EXTLOAD instruction from 368ef12057737229452c17983faa20857dba441ef05Evan Cheng // smaller type. 3690329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng TLI.isLoadExtLegal(ISD::EXTLOAD, SVT) && 370aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner TLI.ShouldShrinkFPConstant(OrigVT)) { 37123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *SType = SVT.getTypeForEVT(*DAG.getContext()); 372baf3c404409d5e47b13984a7f95bfbd6d1f2e79eOwen Anderson LLVMC = cast<ConstantFP>(ConstantExpr::getFPTrunc(LLVMC, SType)); 373ef12057737229452c17983faa20857dba441ef05Evan Cheng VT = SVT; 374ef12057737229452c17983faa20857dba441ef05Evan Cheng Extend = true; 375ef12057737229452c17983faa20857dba441ef05Evan Cheng } 376004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng } 377004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 378475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(LLVMC, TLI.getPointerTy()); 3791606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 380ef12057737229452c17983faa20857dba441ef05Evan Cheng if (Extend) 381bcc8017c738e92d9c1af221b11c4916cb524184eEvan Cheng return DAG.getExtLoad(ISD::EXTLOAD, OrigVT, dl, 382bcc8017c738e92d9c1af221b11c4916cb524184eEvan Cheng DAG.getEntryNode(), 38385ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner CPIdx, MachinePointerInfo::getConstantPool(), 38485ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner VT, false, false, Alignment); 38533c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen return DAG.getLoad(OrigVT, dl, DAG.getEntryNode(), CPIdx, 38685ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getConstantPool(), false, false, 3871e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 388004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng} 389004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 390f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedStore - Expands an unaligned store to 2 half-size stores. 391f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 392475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedStore(StoreSDNode *ST, SelectionDAG &DAG, 3930d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman const TargetLowering &TLI) { 394475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = ST->getChain(); 395475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = ST->getBasePtr(); 396475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Val = ST->getValue(); 397e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Val.getValueType(); 398907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen int Alignment = ST->getAlignment(); 399bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = ST->getDebugLoc(); 40083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ST->getMemoryVT().isFloatingPoint() || 40183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands ST->getMemoryVT().isVector()) { 40223b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT intVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits()); 40305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 40405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a bitconvert of the value to the integer type of the 40505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // same size, then a (misaligned) int store. 40605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // FIXME: Does not handle truncating floating point stores! 407bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue Result = DAG.getNode(ISD::BITCAST, dl, intVT, Val); 408da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner return DAG.getStore(Chain, dl, Result, Ptr, ST->getPointerInfo(), 409da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->isVolatile(), ST->isNonTemporal(), Alignment); 41005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } else { 41105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do a (aligned) store to a stack slot, then copy from the stack slot 41205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // to the final destination using (unaligned) integer loads and stores. 413e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT StoredVT = ST->getMemoryVT(); 414e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT RegVT = 415adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng TLI.getRegisterType(*DAG.getContext(), 416adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT::getIntegerVT(*DAG.getContext(), 417adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng StoredVT.getSizeInBits())); 41805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned StoredBytes = StoredVT.getSizeInBits() / 8; 41905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned RegBytes = RegVT.getSizeInBits() / 8; 42005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned NumRegs = (StoredBytes + RegBytes - 1) / RegBytes; 42105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 422fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Make sure the stack slot is also aligned for the register type. 423fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands SDValue StackPtr = DAG.CreateStackTemporary(StoredVT, RegVT); 424fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 425fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Perform the original store, only redirected to the stack slot. 426fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Store = DAG.getTruncStore(Chain, dl, 427ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Val, StackPtr, MachinePointerInfo(), 428ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner StoredVT, false, false, 0); 42905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 43005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SmallVector<SDValue, 8> Stores; 43105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned Offset = 0; 43205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 43305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do all but one copies using the full register width. 43405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands for (unsigned i = 1; i < NumRegs; i++) { 43505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Load one integer register's worth from the stack slot. 436ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Load = DAG.getLoad(RegVT, dl, Store, StackPtr, 437ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(), 4381e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 43905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Store it to the final location. Remember the store. 440bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, Ptr, 441ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner ST->getPointerInfo().getWithOffset(Offset), 4421e559443a17d1b335f697551c6263ba60d5dd827David Greene ST->isVolatile(), ST->isNonTemporal(), 44305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 44405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Increment the pointers. 44505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Offset += RegBytes; 446bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 44705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Increment); 448bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 44905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 45005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 451fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // The last store may be partial. Do a truncating store. On big-endian 452fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // machines this requires an extending load from the stack slot to ensure 453fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // that the bits are in the right place. 454adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 455adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng 8 * (StoredBytes - Offset)); 456fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 457fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Load from the stack slot. 458bcc8017c738e92d9c1af221b11c4916cb524184eEvan Cheng SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, RegVT, dl, Store, StackPtr, 4593d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MachinePointerInfo(), 4603d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MemVT, false, false, 0); 46105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 462bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, Ptr, 4633d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ST->getPointerInfo() 4643d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner .getWithOffset(Offset), 465fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MemVT, ST->isVolatile(), 4661e559443a17d1b335f697551c6263ba60d5dd827David Greene ST->isNonTemporal(), 46705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 46805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The order of the stores doesn't matter - say it with a TokenFactor. 469825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 47005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Stores.size()); 47105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 472907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 47383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(ST->getMemoryVT().isInteger() && 47483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands !ST->getMemoryVT().isVector() && 475907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen "Unaligned store of unknown type."); 476f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Get the half-size VT 477bceddbdc919fc2ca7bc8c3911586ba93367686f0Ken Dyck EVT NewStoredVT = ST->getMemoryVT().getHalfSizedIntegerVT(*DAG.getContext()); 47883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands int NumBits = NewStoredVT.getSizeInBits(); 479f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int IncrementSize = NumBits / 8; 480f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 481f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Divide the stored value in two parts. 482475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 483475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = Val; 484bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Hi = DAG.getNode(ISD::SRL, dl, VT, Val, ShiftAmount); 485f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 486f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Store the two parts 487475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store1, Store2; 488bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store1 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Lo:Hi, Ptr, 489da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo(), NewStoredVT, 4901e559443a17d1b335f697551c6263ba60d5dd827David Greene ST->isVolatile(), ST->isNonTemporal(), Alignment); 491bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 492f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 493dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands Alignment = MinAlign(Alignment, IncrementSize); 494bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store2 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Hi:Lo, Ptr, 495da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo().getWithOffset(IncrementSize), 4961e559443a17d1b335f697551c6263ba60d5dd827David Greene NewStoredVT, ST->isVolatile(), ST->isNonTemporal(), 4971e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 498f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 499825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Store1, Store2); 500f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 501f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 502f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedLoad - Expands an unaligned load to 2 half-size loads. 503f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 504475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedLoad(LoadSDNode *LD, SelectionDAG &DAG, 505e9530ecae4897fe8157bd4d7616043bd8c0484e2Dan Gohman const TargetLowering &TLI) { 506475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = LD->getChain(); 507475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = LD->getBasePtr(); 508e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = LD->getValueType(0); 509e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT LoadedVT = LD->getMemoryVT(); 510bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = LD->getDebugLoc(); 51183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (VT.isFloatingPoint() || VT.isVector()) { 51223b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT intVT = EVT::getIntegerVT(*DAG.getContext(), LoadedVT.getSizeInBits()); 51305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 51405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a (misaligned) integer load of the same size, 51505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // then bitconvert to floating point or vector. 516ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue newLoad = DAG.getLoad(intVT, dl, Chain, Ptr, LD->getPointerInfo(), 517ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->isVolatile(), 5181e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), LD->getAlignment()); 519bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue Result = DAG.getNode(ISD::BITCAST, dl, LoadedVT, newLoad); 52005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (VT.isFloatingPoint() && LoadedVT != VT) 521bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, VT, Result); 522907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen 52305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Ops[] = { Result, Chain }; 524bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 525ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner } 526bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 527ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Copy the value to a (aligned) stack slot using (unaligned) integer 528ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // loads and stores, then do a (aligned) load from the stack slot. 529ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner EVT RegVT = TLI.getRegisterType(*DAG.getContext(), intVT); 530ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner unsigned LoadedBytes = LoadedVT.getSizeInBits() / 8; 531ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner unsigned RegBytes = RegVT.getSizeInBits() / 8; 532ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner unsigned NumRegs = (LoadedBytes + RegBytes - 1) / RegBytes; 533ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 534ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Make sure the stack slot is also aligned for the register type. 535ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue StackBase = DAG.CreateStackTemporary(LoadedVT, RegVT); 536ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 537ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 538ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SmallVector<SDValue, 8> Stores; 539ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue StackPtr = StackBase; 540ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner unsigned Offset = 0; 541ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 542ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Do all but one copies using the full register width. 543ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner for (unsigned i = 1; i < NumRegs; i++) { 544ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Load one integer register's worth from the original location. 545ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Load = DAG.getLoad(RegVT, dl, Chain, Ptr, 546ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(Offset), 547ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->isVolatile(), LD->isNonTemporal(), 548ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MinAlign(LD->getAlignment(), Offset)); 54905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 550ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, StackPtr, 5516229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner MachinePointerInfo(), false, false, 0)); 552ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Increment the pointers. 553ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Offset += RegBytes; 554ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 555ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 556ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Increment); 55705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 558ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 559ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // The last copy may be partial. Do an extending load. 560ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 561ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 8 * (LoadedBytes - Offset)); 562ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, RegVT, dl, Chain, Ptr, 563ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(Offset), 564ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MemVT, LD->isVolatile(), 565ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->isNonTemporal(), 566ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MinAlign(LD->getAlignment(), Offset)); 567ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Follow the load with a store to the stack slot. Remember the store. 568ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // On big-endian machines this requires a truncating store to ensure 569ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // that the bits end up in the right place. 570ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, StackPtr, 571ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(), MemVT, 572ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, 0)); 573ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 574ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // The order of the stores doesn't matter - say it with a TokenFactor. 575ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 576ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Stores.size()); 577ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 578ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Finally, perform the original load only redirected to the stack slot. 579ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Load = DAG.getExtLoad(LD->getExtensionType(), VT, dl, TF, StackBase, 580ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(), LoadedVT, false, false, 0); 581ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 582ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Callers expect a MERGE_VALUES node. 583ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Ops[] = { Load, TF }; 584ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner return DAG.getMergeValues(Ops, 2, dl); 585907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 58683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(LoadedVT.isInteger() && !LoadedVT.isVector() && 587e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner "Unaligned load of unsupported type."); 588e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner 5898155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // Compute the new VT that is half the size of the old one. This is an 5908155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // integer MVT. 59183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned NumBits = LoadedVT.getSizeInBits(); 592e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewLoadedVT; 59323b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson NewLoadedVT = EVT::getIntegerVT(*DAG.getContext(), NumBits/2); 594e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner NumBits >>= 1; 595fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 596e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned Alignment = LD->getAlignment(); 597e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned IncrementSize = NumBits / 8; 598f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ISD::LoadExtType HiExtType = LD->getExtensionType(); 599f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 600f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If the original load is NON_EXTLOAD, the hi part load must be ZEXTLOAD. 601f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (HiExtType == ISD::NON_EXTLOAD) 602f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio HiExtType = ISD::ZEXTLOAD; 603f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 604f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Load the value in two parts 605475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 606f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (TLI.isLittleEndian()) { 607ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Lo = DAG.getExtLoad(ISD::ZEXTLOAD, VT, dl, Chain, Ptr, LD->getPointerInfo(), 608ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 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())); 612ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Hi = DAG.getExtLoad(HiExtType, VT, dl, Chain, Ptr, 613ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 614ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner NewLoadedVT, LD->isVolatile(), 6156e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach LD->isNonTemporal(), MinAlign(Alignment,IncrementSize)); 616f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 617ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Hi = DAG.getExtLoad(HiExtType, VT, dl, Chain, Ptr, LD->getPointerInfo(), 618ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner NewLoadedVT, LD->isVolatile(), 6191e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), Alignment); 620bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 621f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 622ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Lo = DAG.getExtLoad(ISD::ZEXTLOAD, VT, dl, Chain, Ptr, 623ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 624ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner NewLoadedVT, LD->isVolatile(), 6256e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach LD->isNonTemporal(), MinAlign(Alignment,IncrementSize)); 626f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 627f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 628f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // aggregate the two parts 629475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 630bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::SHL, dl, VT, Hi, ShiftAmount); 631bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::OR, dl, VT, Result, Lo); 632f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 633825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 634f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Hi.getValue(1)); 635f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 636475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Result, TF }; 637bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 638f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 639912095becac923ff614d7b07728eb345ada67765Evan Cheng 6406867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// PerformInsertVectorEltInMemory - Some target cannot handle a variable 6416867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 6426867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// is necessary to spill the vector being inserted into to memory, perform 6436867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// the insert there, and then read the result back. 644475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize:: 645bb5da918545efb54857a09c983a5a7f22a7e04d4Dale JohannesenPerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, SDValue Idx, 646bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl) { 647475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1 = Vec; 648475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp2 = Val; 649475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = Idx; 650fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 6516867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // If the target doesn't support this, we have to spill the input vector 6526867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // to a temporary stack slot, update the element, then reload it. This is 6536867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // badness. We could also load the value into a vector register (either 6546867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // with a "move to register" or "extload into register" instruction, then 6556867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // permute it into place, if the idx is a constant and if the idx is 6566867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // supported by the target. 657e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp1.getValueType(); 658e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 659e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT IdxVT = Tmp3.getValueType(); 660e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PtrVT = TLI.getPointerTy(); 661475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(VT); 6626867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 663ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex(); 664ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 6656867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the vector. 666bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Tmp1, StackPtr, 66785ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getFixedStack(SPFI), 6681e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 6696867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 6706867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Truncate or zero extend offset to target pointer type. 6718e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands unsigned CastOpc = IdxVT.bitsGT(PtrVT) ? ISD::TRUNCATE : ISD::ZERO_EXTEND; 672bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(CastOpc, dl, PtrVT, Tmp3); 6736867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Add the offset to the index. 674aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned EltSize = EltVT.getSizeInBits()/8; 675bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(ISD::MUL, dl, IdxVT, Tmp3,DAG.getConstant(EltSize, IdxVT)); 676bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue StackPtr2 = DAG.getNode(ISD::ADD, dl, IdxVT, Tmp3, StackPtr); 6776867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the scalar value. 67885ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner Ch = DAG.getTruncStore(Ch, dl, Tmp2, StackPtr2, MachinePointerInfo(), EltVT, 6791e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 6806867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Load the updated vector. 681bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getLoad(VT, dl, Ch, StackPtr, 68285ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getFixedStack(SPFI), false, false, 0); 6836867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman} 6846867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 685e9f1015d1f184a51aaadfd03be0846bd5e7d08a2Mon P Wang 6863f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanSDValue SelectionDAGLegalize:: 6873f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, SDValue Idx, DebugLoc dl) { 6883f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (ConstantSDNode *InsertPos = dyn_cast<ConstantSDNode>(Idx)) { 6893f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // SCALAR_TO_VECTOR requires that the type of the value being inserted 6903f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // match the element type of the vector being created, except for 6913f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // integers in which case the inserted value can be over width. 692e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = Vec.getValueType().getVectorElementType(); 6933f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (Val.getValueType() == EltVT || 6943f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman (EltVT.isInteger() && Val.getValueType().bitsGE(EltVT))) { 6953f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ScVec = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, 6963f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Vec.getValueType(), Val); 6973f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6983f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman unsigned NumElts = Vec.getValueType().getVectorNumElements(); 6993f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // We generate a shuffle of InVec and ScVec, so the shuffle mask 7003f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // should be 0,1,2,3,4,5... with the appropriate element replaced with 7013f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // elt 0 of the RHS. 7023f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SmallVector<int, 8> ShufOps; 7033f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0; i != NumElts; ++i) 7043f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman ShufOps.push_back(i != InsertPos->getZExtValue() ? i : NumElts); 7053f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 7063f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return DAG.getVectorShuffle(Vec.getValueType(), dl, Vec, ScVec, 7073f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman &ShufOps[0]); 7083f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 7093f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 7103f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return PerformInsertVectorEltInMemory(Vec, Val, Idx, dl); 7113f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman} 7123f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 7137ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::OptimizeFloatStore(StoreSDNode* ST) { 7147ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Turn 'store float 1.0, Ptr' -> 'store int 0x12345678, Ptr' 7157ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: We shouldn't do this for TargetConstantFP's. 7167ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: move this to the DAG Combiner! Note that we can't regress due 7177ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // to phase ordering between legalized code and the dag combiner. This 7187ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // probably means that we need to integrate dag combiner and legalizer 7197ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // together. 7207ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We generally can't do this one for long doubles. 7217ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp1 = ST->getChain(); 7227ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp2 = ST->getBasePtr(); 7237ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp3; 7247ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Alignment = ST->getAlignment(); 7257ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bool isVolatile = ST->isVolatile(); 7261e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = ST->isNonTemporal(); 7277ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = ST->getDebugLoc(); 7287ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(ST->getValue())) { 729825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (CFP->getValueType(0) == MVT::f32 && 730825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson getTypeAction(MVT::i32) == Legal) { 7317ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF(). 7327ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bitcastToAPInt().zextOrTrunc(32), 733825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::i32); 734da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 735da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner isVolatile, isNonTemporal, Alignment); 736da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner } 737bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 738da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner if (CFP->getValueType(0) == MVT::f64) { 7397ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // If this target supports 64-bit registers, do a single 64-bit store. 740825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (getTypeAction(MVT::i64) == Legal) { 7417ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF().bitcastToAPInt(). 742825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson zextOrTrunc(64), MVT::i64); 743da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 744da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner isVolatile, isNonTemporal, Alignment); 745da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner } 746bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 747da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner if (getTypeAction(MVT::i32) == Legal && !ST->isVolatile()) { 7487ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, if the target supports 32-bit registers, use 2 32-bit 7497ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // stores. If the target supports neither 32- nor 64-bits, this 7507ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // xform is certainly not worth it. 7517ef3d178660b82d1571757e49f44b004d772a116Eli Friedman const APInt &IntVal =CFP->getValueAPF().bitcastToAPInt(); 752825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Lo = DAG.getConstant(APInt(IntVal).trunc(32), MVT::i32); 753825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Hi = DAG.getConstant(IntVal.lshr(32).trunc(32), MVT::i32); 7547ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (TLI.isBigEndian()) std::swap(Lo, Hi); 7557ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 756da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Lo = DAG.getStore(Tmp1, dl, Lo, Tmp2, ST->getPointerInfo(), isVolatile, 757da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner isNonTemporal, Alignment); 7587ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 7597ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DAG.getIntPtrConstant(4)); 760da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Hi = DAG.getStore(Tmp1, dl, Hi, Tmp2, 761da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo().getWithOffset(4), 7621e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, MinAlign(Alignment, 4U)); 7637ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 764825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 7657ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7667ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7677ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7687ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return SDValue(); 7697ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 7707ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 771a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// LegalizeOp - We know that the specified value has a legal type, and 772a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// that its operands are legal. Now ensure that the operation itself 773a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// is legal, recursively ensuring that the operands' operations remain 774a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// legal. 775475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) { 77609ec1b058331aadb29a348091611d23892b5c492Chris Lattner if (Op.getOpcode() == ISD::TargetConstant) // Allow illegal target nodes. 77709ec1b058331aadb29a348091611d23892b5c492Chris Lattner return Op; 778fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 779ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif SDNode *Node = Op.getNode(); 7807d2ad624fa749a6d3edac0d94e9c107989c16304Dale Johannesen DebugLoc dl = Node->getDebugLoc(); 781e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner 7821fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 7831fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman assert(getTypeAction(Node->getValueType(i)) == Legal && 7841fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7851fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman 7861fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 7876e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach assert((isTypeLegal(Node->getOperand(i).getValueType()) || 7881fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman Node->getOperand(i).getOpcode() == ISD::TargetConstant) && 7891fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 79145982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 79245982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 793475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 794e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (I != LegalizedNodes.end()) return I->second; 7953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 796475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 797475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result = Op; 798456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner bool isCustom = false; 799fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 8008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Figure out the correct action; the way to query this varies by opcode 8018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::LegalizeAction Action; 8028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman bool SimpleFinishLegalizing = true; 8033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 8048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_W_CHAIN: 8058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_WO_CHAIN: 8068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_VOID: 8078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAARG: 8088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STACKSAVE: 809825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Action = TLI.getOperationAction(Node->getOpcode(), MVT::Other); 8108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 8128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 8138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 8148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 8158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType()); 8168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: 8188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 819e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT InnerType = cast<VTSDNode>(Node->getOperand(1))->getVT(); 8208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), InnerType); 8218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 8233be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SELECT_CC: 8243be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SETCC: 8253be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::BR_CC: { 8263be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CCOperand = Node->getOpcode() == ISD::SELECT_CC ? 4 : 8273be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getOpcode() == ISD::SETCC ? 2 : 1; 8283be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CompareOperand = Node->getOpcode() == ISD::BR_CC ? 2 : 0; 829e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(CompareOperand).getValueType(); 8303be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman ISD::CondCode CCCode = 8313be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman cast<CondCodeSDNode>(Node->getOperand(CCOperand))->get(); 8323be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getCondCodeAction(CCCode, OpVT); 8333be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Action == TargetLowering::Legal) { 8343be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Node->getOpcode() == ISD::SELECT_CC) 8353be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 8363be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getValueType(0)); 8373be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman else 8383be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), OpVT); 8393be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8403be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 8413be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::LOAD: 8438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STORE: 844ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: Model these properly. LOAD and STORE are complicated, and 845ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // STORE expects the unlegalized operand in some cases. 846ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 847ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_START: 8498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_END: 850ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: This shouldn't be necessary. These nodes have special properties 851ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // dealing with the recursive nature of legalization. Removing this 852ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // special case should be done as part of making LegalizeDAG non-recursive. 853ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 854ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: 8568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 8578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SADDO: 8588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SSUBO: 8598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UADDO: 8608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::USUBO: 8618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SMULO: 8628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UMULO: 8638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FPOWI: 8648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 8658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 8668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 867c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach case ISD::EH_SJLJ_SETJMP: 868c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach case ISD::EH_SJLJ_LONGJMP: 869e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach case ISD::EH_SJLJ_DISPATCHSETUP: 870f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // These operations lie about being legal: when they claim to be legal, 871f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // they should actually be expanded. 8728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Action == TargetLowering::Legal) 8748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Expand; 8758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAMPOLINE: 8778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 8788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 8794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // These operations lie about being legal: when they claim to be legal, 8804bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // they should actually be custom-lowered. 8814bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8824bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Action == TargetLowering::Legal) 8834bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TargetLowering::Custom; 8848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BUILD_VECTOR: 886b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // A weird case: legalization for BUILD_VECTOR never legalizes the 887b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // operands! 888b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // FIXME: This really sucks... changing it isn't semantically incorrect, 889b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // but it massively pessimizes the code for floating-point BUILD_VECTORs 890b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // because ConstantFP operands get legalized into constant pool loads 891b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // before the BUILD_VECTOR code can see them. It doesn't usually bite, 892b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // though, because BUILD_VECTORS usually get lowered into other nodes 893b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // which get legalized properly. 8948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SimpleFinishLegalizing = false; 895948c1b1cda280c6428dbeaa03a6c2c559dbb93f4Chris Lattner break; 8963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 897d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner if (Node->getOpcode() >= ISD::BUILTIN_OP_END) { 8988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Legal; 8998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 9008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 9018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 904d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner 9058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (SimpleFinishLegalizing) { 9068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVector<SDValue, 8> Ops, ResultVals; 9078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 9088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops.push_back(LegalizeOp(Node->getOperand(i))); 9098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 9108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: break; 9118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR: 9128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRIND: 9138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_JT: 9148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_CC: 9158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRCOND: 9168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Branches tweak the chain to include LastCALLSEQ_END 917825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ops[0] = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Ops[0], 9188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END); 9198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[0] = LegalizeOp(Ops[0]); 9208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 9218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SHL: 9238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRL: 9248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRA: 9258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTL: 9268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTR: 9278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Legalizing shifts/rotates requires adjusting the shift amount 9288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // to the appropriate width. 9298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!Ops[1].getValueType().isVector()) 9308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[1] = LegalizeOp(DAG.getShiftAmountOperand(Ops[1])); 9318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 932db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SRL_PARTS: 933db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SRA_PARTS: 934db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SHL_PARTS: 935db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman // Legalizing shifts/rotates requires adjusting the shift amount 936db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman // to the appropriate width. 937db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman if (!Ops[2].getValueType().isVector()) 938db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman Ops[2] = LegalizeOp(DAG.getShiftAmountOperand(Ops[2])); 9392c9489d6e96d99f77b6c31919805b5e61954deb2Dan Gohman break; 9408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 942027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), Ops.data(), 943027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Ops.size()), 0); 9448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Action) { 9458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Legal: 946d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 9478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Result.getValue(i)); 9488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Custom: 9508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FIXME: The handling for custom lowering with multiple results is 9518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // a complete mess. 9528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = TLI.LowerOperation(Result, DAG); 9538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Tmp1.getNode()) { 9548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) { 9558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (e == 1) 9568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1); 9578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 9588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1.getValue(i)); 9598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FALL THROUGH 9648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Expand: 9658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ExpandNode(Result.getNode(), ResultVals); 9668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Promote: 9688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman PromoteNode(Result.getNode(), ResultVals); 9698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!ResultVals.empty()) { 9728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = ResultVals.size(); i != e; ++i) { 9738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (ResultVals[i] != SDValue(Node, i)) 9748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals[i] = LegalizeOp(ResultVals[i]); 9758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman AddLegalizedOperand(SDValue(Node, i), ResultVals[i]); 9768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman return ResultVals[Op.getResNo()]; 978d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner } 9798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 9828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: 983e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#ifndef NDEBUG 984993aacedfdc3f156f667b4efa280ee79eab3b898David Greene dbgs() << "NODE: "; 985993aacedfdc3f156f667b4efa280ee79eab3b898David Greene Node->dump( &DAG); 986993aacedfdc3f156f667b4efa280ee79eab3b898David Greene dbgs() << "\n"; 987e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#endif 98835a389344d21178ee280c2410401b2060b5b879cChris Lattner assert(0 && "Do not know how to legalize this operator!"); 98998ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman 990b2827b0901162169bb2692b77a839c9767849134Chris Lattner case ISD::BUILD_VECTOR: 991b2827b0901162169bb2692b77a839c9767849134Chris Lattner switch (TLI.getOperationAction(ISD::BUILD_VECTOR, Node->getValueType(0))) { 99235a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 9932332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner case TargetLowering::Custom: 9942332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Tmp3 = TLI.LowerOperation(Result, DAG); 995ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()) { 9962332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Result = Tmp3; 9972332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 9982332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 9992332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner // FALLTHROUGH 1000ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner case TargetLowering::Expand: 1001ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandBUILD_VECTOR(Result.getNode()); 1002b2827b0901162169bb2692b77a839c9767849134Chris Lattner break; 10032332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 10042332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 10056831a815999dde4cf801e2076e66b4943964daf2Chris Lattner case ISD::CALLSEQ_START: { 10066831a815999dde4cf801e2076e66b4943964daf2Chris Lattner SDNode *CallEnd = FindCallEndFromCallStart(Node); 1007fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10086831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Recursively Legalize all of the inputs of the call end that do not lead 10096831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // to this call start. This ensures that any libcalls that need be inserted 10106831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // are inserted *before* the CALLSEQ_START. 101100755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner {SmallPtrSet<SDNode*, 32> NodesLeadingTo; 10126831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = CallEnd->getNumOperands(); i != e; ++i) 1013ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif LegalizeAllNodesNotLeadingTo(CallEnd->getOperand(i).getNode(), Node, 1014c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo); 1015c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 10166831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 1017ee7f8b5f058174a55372159bc23088198e5f5991Jim Grosbach // Now that we have legalized all of the inputs (which may have inserted 1018ee7f8b5f058174a55372159bc23088198e5f5991Jim Grosbach // libcalls), create the new CALLSEQ_START node. 10196831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 10206831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 1021ee7f8b5f058174a55372159bc23088198e5f5991Jim Grosbach // Merge in the last call to ensure that this call starts after the last 10226831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // call ended. 1023c5d7d7c715f7b7a4eeea1ceaafefc3d1d6df2addChris Lattner if (LastCALLSEQ_END.getOpcode() != ISD::EntryToken) { 1024825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 1025ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp1, LastCALLSEQ_END); 1026b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner Tmp1 = LegalizeOp(Tmp1); 1027b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner } 1028fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10296831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Do not try to legalize the target-specific arguments (#1+). 10306831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Tmp1 != Node->getOperand(0)) { 1031475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 10326831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Ops[0] = Tmp1; 10336e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), &Ops[0], 10346e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach Ops.size()), Result.getResNo()); 10356831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1036fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10376831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Remember that the CALLSEQ_START is legalized. 10384b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(0), Result); 10394b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) // If this has a flag result, remember it. 10404b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 1041fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10426831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Now that the callseq_start and all of the non-call nodes above this call 1043fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // sequence have been legalized, legalize the call itself. During this 10446831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // process, no libcalls can/will be inserted, guaranteeing that no calls 10456831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // can overlap. 10466831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "Inconsistent sequentialization of calls!"); 10476831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Note that we are selecting this call! 1048475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LastCALLSEQ_END = SDValue(CallEnd, 0); 10496831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = true; 1050fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10516831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call, starting from the CALLSEQ_END. 10526831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(LastCALLSEQ_END); 10536831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "CALLSEQ_END should have cleared this!"); 10546831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 10556831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 105616cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner case ISD::CALLSEQ_END: 10576831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the CALLSEQ_START node hasn't been legalized first, legalize it. This 10586831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // will cause this node to be legalized as well as handling libcalls right. 1059ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (LastCALLSEQ_END.getNode() != Node) { 1060475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LegalizeOp(SDValue(FindCallStartFromCallEnd(Node), 0)); 1061475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 10626831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(I != LegalizedNodes.end() && 10636831a815999dde4cf801e2076e66b4943964daf2Chris Lattner "Legalizing the call start should have legalized this node!"); 10646831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return I->second; 10656831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1066fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1067fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, the call start has been legalized and everything is going 10686831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // according to plan. Just legalize ourselves normally here. 10693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 107070814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // Do not try to legalize the target-specific arguments (#1+), except for 107170814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // an optional flag input. 1072825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Node->getOperand(Node->getNumOperands()-1).getValueType() != MVT::Flag){ 107370814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0)) { 1074475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 107570814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 1076027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 1077027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman &Ops[0], Ops.size()), 1078027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result.getResNo()); 107970814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 108070814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } else { 108170814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(Node->getNumOperands()-1)); 108270814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0) || 108370814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 != Node->getOperand(Node->getNumOperands()-1)) { 1084475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 108570814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 108670814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops.back() = Tmp2; 1087027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 1088027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman &Ops[0], Ops.size()), 1089027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result.getResNo()); 109070814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 10916a5428934ba6159c1acc541944332e51a6cfa59aChris Lattner } 10924b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner assert(IsLegalizingCall && "Call sequence imbalance between start/end?"); 10936831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // This finishes up call legalization. 10946831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = false; 1095fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10964b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner // If the CALLSEQ_END node has a flag, remember that we legalized it. 1097475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Result.getValue(0)); 10984b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) 1099475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Result.getValue(1)); 110099a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Result.getValue(Op.getResNo()); 1101f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::LOAD: { 1102466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng LoadSDNode *LD = cast<LoadSDNode>(Node); 1103466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = LegalizeOp(LD->getChain()); // Legalize the chain. 1104466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp2 = LegalizeOp(LD->getBasePtr()); // Legalize the base pointer. 11052d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 1106466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng ISD::LoadExtType ExtType = LD->getExtensionType(); 1107466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng if (ExtType == ISD::NON_EXTLOAD) { 1108e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1109027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 1110027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Tmp1, Tmp2, LD->getOffset()), 1111027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result.getResNo()); 1112466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = Result.getValue(0); 1113466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = Result.getValue(1); 1114fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1115466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng switch (TLI.getOperationAction(Node->getOpcode(), VT)) { 111635a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 1117f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1118f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned load and the target doesn't support it, 1119f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1120bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) { 1121e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = LD->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1122e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 1123f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (LD->getAlignment() < ABIAlignment){ 11246e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 1125debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson DAG, TLI); 1126f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp3 = Result.getOperand(0); 1127f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp4 = Result.getOperand(1); 1128907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp3 = LegalizeOp(Tmp3); 1129907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp4 = LegalizeOp(Tmp4); 1130f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1131f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1132f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 1133466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Custom: 1134466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = TLI.LowerOperation(Tmp3, DAG); 1135ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) { 1136466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = LegalizeOp(Tmp1); 1137466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1138466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1139466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1140466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Promote: { 1141466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Only promote a load of vector type to another. 114283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Cannot promote this load!"); 1143466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Change base type to a different vector type. 1144e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), VT); 1145466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng 1146ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Tmp1 = DAG.getLoad(NVT, dl, Tmp1, Tmp2, LD->getPointerInfo(), 11471e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isVolatile(), LD->isNonTemporal(), 11481e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->getAlignment()); 1149bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp3 = LegalizeOp(DAG.getNode(ISD::BITCAST, dl, VT, Tmp1)); 115041f6cbbeb21d7d4376b8c0302b9766c3e43be5f2Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1151466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1152f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 1153466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1154fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Since loads produce two values, make sure to remember that we 1155466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // legalized both of them. 1156475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp3); 1157475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp4); 115899a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Op.getResNo() ? Tmp4 : Tmp3; 11593d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } 1160bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 11613d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner EVT SrcVT = LD->getMemoryVT(); 11623d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned SrcWidth = SrcVT.getSizeInBits(); 11633d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned Alignment = LD->getAlignment(); 11643d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner bool isVolatile = LD->isVolatile(); 11653d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner bool isNonTemporal = LD->isNonTemporal(); 11663d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 11673d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (SrcWidth != SrcVT.getStoreSizeInBits() && 11683d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Some targets pretend to have an i1 loading operation, and actually 11693d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // load an i8. This trick is correct for ZEXTLOAD because the top 7 11703d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // bits are guaranteed to be zero; it helps the optimizers understand 11713d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // that these bits are zero. It is also useful for EXTLOAD, since it 11723d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // tells the optimizers that those bits are undefined. It would be 11733d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // nice to have an effective generic way of getting these benefits... 11743d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Until such a way is found, don't insist on promoting i1 here. 11753d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner (SrcVT != MVT::i1 || 11763d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner TLI.getLoadExtAction(ExtType, MVT::i1) == TargetLowering::Promote)) { 11773d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Promote to a byte-sized load if not loading an integral number of 11783d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // bytes. For example, promote EXTLOAD:i20 -> EXTLOAD:i24. 11793d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned NewWidth = SrcVT.getStoreSizeInBits(); 11803d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner EVT NVT = EVT::getIntegerVT(*DAG.getContext(), NewWidth); 11813d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner SDValue Ch; 11823d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 11833d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // The extra bits are guaranteed to be zero, since we stored them that 11843d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // way. A zext load from NVT thus automatically gives zext from SrcVT. 11853d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 11863d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ISD::LoadExtType NewExtType = 11873d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ExtType == ISD::ZEXTLOAD ? ISD::ZEXTLOAD : ISD::EXTLOAD; 11883d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 11893d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getExtLoad(NewExtType, Node->getValueType(0), dl, 11903d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1, Tmp2, LD->getPointerInfo(), 11913d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner NVT, isVolatile, isNonTemporal, Alignment); 11923d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 11933d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Ch = Result.getValue(1); // The chain. 11943d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 11953d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (ExtType == ISD::SEXTLOAD) 11963d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Having the top bits zero doesn't help when sign extending. 11973d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 11983d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result.getValueType(), 11993d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result, DAG.getValueType(SrcVT)); 12003d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner else if (ExtType == ISD::ZEXTLOAD || NVT == Result.getValueType()) 12013d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // All the top bits are guaranteed to be zero - inform the optimizers. 12023d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getNode(ISD::AssertZext, dl, 12033d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result.getValueType(), Result, 12043d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG.getValueType(SrcVT)); 12053d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12063d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(Result); 12073d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Ch); 12083d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } else if (SrcWidth & (SrcWidth - 1)) { 12093d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // If not loading a power-of-2 number of bits, expand as two loads. 12103d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(!SrcVT.isVector() && "Unsupported extload!"); 12113d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned RoundWidth = 1 << Log2_32(SrcWidth); 12123d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(RoundWidth < SrcWidth); 12133d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned ExtraWidth = SrcWidth - RoundWidth; 12143d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(ExtraWidth < RoundWidth); 12153d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 12163d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner "Load size not an integral number of bytes!"); 12173d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 12183d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 12193d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner SDValue Lo, Hi, Ch; 12203d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned IncrementSize; 12213d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12223d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (TLI.isLittleEndian()) { 12233d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // EXTLOAD:i24 -> ZEXTLOAD:i16 | (shl EXTLOAD@+2:i8, 16) 12243d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Load the bottom RoundWidth bits. 12253d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Lo = DAG.getExtLoad(ISD::ZEXTLOAD, Node->getValueType(0), dl, 12263d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1, Tmp2, 12273d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo(), RoundVT, isVolatile, 12283d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner isNonTemporal, Alignment); 12293d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12303d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Load the remaining ExtraWidth bits. 12313d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner IncrementSize = RoundWidth / 8; 12323d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 12333d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG.getIntPtrConstant(IncrementSize)); 12343d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi = DAG.getExtLoad(ExtType, Node->getValueType(0), dl, Tmp1, Tmp2, 12353d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 12363d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ExtraVT, isVolatile, isNonTemporal, 12373d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MinAlign(Alignment, IncrementSize)); 12383d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12393d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Build a factor node to remember that this load is independent of 12403d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // the other one. 12413d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 12423d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi.getValue(1)); 12433d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12443d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Move the top bits to the right place. 12453d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 12463d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG.getConstant(RoundWidth, TLI.getShiftAmountTy())); 12473d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12483d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Join the hi and lo parts. 12493d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 12503d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } else { 12513d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Big endian - avoid unaligned loads. 12523d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // EXTLOAD:i24 -> (shl EXTLOAD:i16, 8) | ZEXTLOAD@+2:i8 12533d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Load the top RoundWidth bits. 12543d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi = DAG.getExtLoad(ExtType, Node->getValueType(0), dl, Tmp1, Tmp2, 12553d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo(), RoundVT, isVolatile, 12563d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner isNonTemporal, Alignment); 12573d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12583d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Load the remaining ExtraWidth bits. 12593d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner IncrementSize = RoundWidth / 8; 12603d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 12613d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG.getIntPtrConstant(IncrementSize)); 12623d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Lo = DAG.getExtLoad(ISD::ZEXTLOAD, 12633d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Node->getValueType(0), dl, Tmp1, Tmp2, 12643d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 12653d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ExtraVT, isVolatile, isNonTemporal, 12663d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MinAlign(Alignment, IncrementSize)); 12673d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12683d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Build a factor node to remember that this load is independent of 12693d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // the other one. 12703d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 12713d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi.getValue(1)); 12723d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12733d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Move the top bits to the right place. 12743d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 12753d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy())); 12763d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12773d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Join the hi and lo parts. 12783d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 12793d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } 1280f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 12813d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(Result); 12823d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Ch); 12833d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } else { 12843d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner switch (TLI.getLoadExtAction(ExtType, SrcVT)) { 12853d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner default: assert(0 && "This action is not supported yet!"); 12863d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case TargetLowering::Custom: 12873d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner isCustom = true; 12883d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // FALLTHROUGH 12893d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case TargetLowering::Legal: 12903d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 12913d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1, Tmp2, LD->getOffset()), 12923d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result.getResNo()); 12933d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = Result.getValue(0); 12943d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = Result.getValue(1); 12953d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12963d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (isCustom) { 12973d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp3 = TLI.LowerOperation(Result, DAG); 12983d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (Tmp3.getNode()) { 12993d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(Tmp3); 13003d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Tmp3.getValue(1)); 13013d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } 1302f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 13033d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // If this is an unaligned load and the target doesn't support it, 13043d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // expand it. 13053d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) { 13063d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner const Type *Ty = 13073d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getMemoryVT().getTypeForEVT(*DAG.getContext()); 13083d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned ABIAlignment = 13093d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner TLI.getTargetData()->getABITypeAlignment(Ty); 13103d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (LD->getAlignment() < ABIAlignment){ 13113d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 13123d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG, TLI); 13133d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = Result.getOperand(0); 13143d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = Result.getOperand(1); 13153d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(Tmp1); 13163d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Tmp2); 1317f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1318f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 13193d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } 13203d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner break; 13213d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case TargetLowering::Expand: 13223d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (!TLI.isLoadExtLegal(ISD::EXTLOAD, SrcVT) && isTypeLegal(SrcVT)) { 13233d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner SDValue Load = DAG.getLoad(SrcVT, dl, Tmp1, Tmp2, 13243d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo(), 13253d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->isVolatile(), LD->isNonTemporal(), 13263d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getAlignment()); 13273d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned ExtendOp; 13283d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner switch (ExtType) { 13293d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case ISD::EXTLOAD: 13303d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ExtendOp = (SrcVT.isFloatingPoint() ? 13313d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ISD::FP_EXTEND : ISD::ANY_EXTEND); 1332f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 13333d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case ISD::SEXTLOAD: ExtendOp = ISD::SIGN_EXTEND; break; 13343d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case ISD::ZEXTLOAD: ExtendOp = ISD::ZERO_EXTEND; break; 13353d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner default: llvm_unreachable("Unexpected extend load type!"); 1336f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 13373d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getNode(ExtendOp, dl, Node->getValueType(0), Load); 13383d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(Result); // Relegalize new nodes. 13393d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Load.getValue(1)); 1340466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1341466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 13423d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // FIXME: This does not work for vectors on most targets. Sign- and 13433d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // zero-extend operations are currently folded into extending loads, 13443d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // whether they are legal or not, and then we end up here without any 13453d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // support for legalizing them. 13463d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(ExtType != ISD::EXTLOAD && 13473d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner "EXTLOAD should always be supported!"); 13483d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Turn the unsupported load into an EXTLOAD followed by an explicit 13493d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // zero/sign extend inreg. 13503d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getExtLoad(ISD::EXTLOAD, Node->getValueType(0), dl, 13513d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1, Tmp2, LD->getPointerInfo(), SrcVT, 13523d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->isVolatile(), LD->isNonTemporal(), 13533d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getAlignment()); 13543d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner SDValue ValRes; 13553d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (ExtType == ISD::SEXTLOAD) 13563d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ValRes = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 13573d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result.getValueType(), 13583d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result, DAG.getValueType(SrcVT)); 13593d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner else 13603d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ValRes = DAG.getZeroExtendInReg(Result, dl, SrcVT); 13613d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(ValRes); // Relegalize new nodes. 13623d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Result.getValue(1)); // Relegalize new nodes. 13633d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner break; 13649d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth } 136501ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 13663d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 13673d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Since loads produce two values, make sure to remember that we legalized 13683d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // both of them. 13693d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner AddLegalizedOperand(SDValue(Node, 0), Tmp1); 13703d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner AddLegalizedOperand(SDValue(Node, 1), Tmp2); 13713d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner return Op.getResNo() ? Tmp2 : Tmp1; 137201ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 1373f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::STORE: { 13748b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng StoreSDNode *ST = cast<StoreSDNode>(Node); 13758b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = LegalizeOp(ST->getChain()); // Legalize the chain. 13768b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp2 = LegalizeOp(ST->getBasePtr()); // Legalize the pointer. 1377d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman unsigned Alignment = ST->getAlignment(); 1378d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman bool isVolatile = ST->isVolatile(); 13791e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = ST->isNonTemporal(); 13808b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 13818b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng if (!ST->isTruncatingStore()) { 13827ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (SDNode *OptStore = OptimizeFloatStore(ST).getNode()) { 13837ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Result = SDValue(OptStore, 0); 13847ef3d178660b82d1571757e49f44b004d772a116Eli Friedman break; 1385d93d46ee7e0a0e539d42139b85c71b2b8c3968feChris Lattner } 1386fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1387957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman { 13888b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp3 = LegalizeOp(ST->getValue()); 1389027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 1390027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Tmp1, Tmp3, Tmp2, 1391027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman ST->getOffset()), 1392027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result.getResNo()); 13938b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 1394e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp3.getValueType(); 13958b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng switch (TLI.getOperationAction(ISD::STORE, VT)) { 139635a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 1397f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1398f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned store and the target doesn't support it, 1399f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1400bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) { 1401e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext()); 14026e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach unsigned ABIAlignment= TLI.getTargetData()->getABITypeAlignment(Ty); 1403f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (ST->getAlignment() < ABIAlignment) 1404e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), 1405e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng DAG, TLI); 1406f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1407f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 14088b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Custom: 14098b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = TLI.LowerOperation(Result, DAG); 1410ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) Result = Tmp1; 14118b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 14128b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Promote: 141383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Unknown legal promote case!"); 1414bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp3 = DAG.getNode(ISD::BITCAST, dl, 14158b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng TLI.getTypeToPromoteTo(ISD::STORE, VT), Tmp3); 1416ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, 1417da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo(), isVolatile, 14181e559443a17d1b335f697551c6263ba60d5dd827David Greene isNonTemporal, Alignment); 14198b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 14208b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 14212efce0a589e2a688a1a06b5dc2ed0db32ae79924Chris Lattner break; 1422f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 14238b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } else { 1424957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman Tmp3 = LegalizeOp(ST->getValue()); 14257e857201f387d004571e6058e2ea709163500f38Duncan Sands 1426e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT StVT = ST->getMemoryVT(); 142783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned StWidth = StVT.getSizeInBits(); 14287e857201f387d004571e6058e2ea709163500f38Duncan Sands 142983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (StWidth != StVT.getStoreSizeInBits()) { 14307e857201f387d004571e6058e2ea709163500f38Duncan Sands // Promote to a byte-sized store with upper bits zero if not 14317e857201f387d004571e6058e2ea709163500f38Duncan Sands // storing an integral number of bytes. For example, promote 14327e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i1 X -> TRUNCSTORE:i8 (and X, 1) 1433adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT NVT = EVT::getIntegerVT(*DAG.getContext(), 1434adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng StVT.getStoreSizeInBits()); 1435ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getZeroExtendInReg(Tmp3, dl, StVT); 1436da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Result = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 1437da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner NVT, isVolatile, isNonTemporal, Alignment); 14387e857201f387d004571e6058e2ea709163500f38Duncan Sands } else if (StWidth & (StWidth - 1)) { 14397e857201f387d004571e6058e2ea709163500f38Duncan Sands // If not storing a power-of-2 number of bits, expand as two stores. 1440bceddbdc919fc2ca7bc8c3911586ba93367686f0Ken Dyck assert(!StVT.isVector() && "Unsupported truncstore!"); 14417e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned RoundWidth = 1 << Log2_32(StWidth); 14427e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(RoundWidth < StWidth); 14437e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned ExtraWidth = StWidth - RoundWidth; 14447e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(ExtraWidth < RoundWidth); 14457e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 14467e857201f387d004571e6058e2ea709163500f38Duncan Sands "Store size not an integral number of bytes!"); 144723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 144823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 1449475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 14507e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned IncrementSize; 14517e857201f387d004571e6058e2ea709163500f38Duncan Sands 14527e857201f387d004571e6058e2ea709163500f38Duncan Sands if (TLI.isLittleEndian()) { 14537e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 X, TRUNCSTORE@+2:i8 (srl X, 16) 14547e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the bottom RoundWidth bits. 1455da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 1456da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner RoundVT, 14571e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, Alignment); 14587e857201f387d004571e6058e2ea709163500f38Duncan Sands 14597e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14607e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1461ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14627e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1463ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 14647e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(RoundWidth, TLI.getShiftAmountTy())); 1465da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, 1466da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo().getWithOffset(IncrementSize), 1467da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ExtraVT, isVolatile, isNonTemporal, 14687e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 14697e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 14707e857201f387d004571e6058e2ea709163500f38Duncan Sands // Big endian - avoid unaligned stores. 14717e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 (srl X, 8), TRUNCSTORE@+2:i8 X 14727e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the top RoundWidth bits. 1473ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 14747e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy())); 1475da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getPointerInfo(), 1476da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner RoundVT, isVolatile, isNonTemporal, Alignment); 14777e857201f387d004571e6058e2ea709163500f38Duncan Sands 14787e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14797e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1480ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14817e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1482da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, 1483da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo().getWithOffset(IncrementSize), 1484da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ExtraVT, isVolatile, isNonTemporal, 14857e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 14867e857201f387d004571e6058e2ea709163500f38Duncan Sands } 1487c7029805ef35ce9805931067b841e6af11db382eChris Lattner 14887e857201f387d004571e6058e2ea709163500f38Duncan Sands // The order of the stores doesn't matter. 1489825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Result = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 14907e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 14917e857201f387d004571e6058e2ea709163500f38Duncan Sands if (Tmp1 != ST->getChain() || Tmp3 != ST->getValue() || 14927e857201f387d004571e6058e2ea709163500f38Duncan Sands Tmp2 != ST->getBasePtr()) 1493027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 1494027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Tmp1, Tmp3, Tmp2, 1495027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman ST->getOffset()), 1496027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result.getResNo()); 14977e857201f387d004571e6058e2ea709163500f38Duncan Sands 14987e857201f387d004571e6058e2ea709163500f38Duncan Sands switch (TLI.getTruncStoreAction(ST->getValue().getValueType(), StVT)) { 149935a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 15007e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Legal: 15017e857201f387d004571e6058e2ea709163500f38Duncan Sands // If this is an unaligned store and the target doesn't support it, 15027e857201f387d004571e6058e2ea709163500f38Duncan Sands // expand it. 1503bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) { 1504e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext()); 15056e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach unsigned ABIAlignment= TLI.getTargetData()->getABITypeAlignment(Ty); 15067e857201f387d004571e6058e2ea709163500f38Duncan Sands if (ST->getAlignment() < ABIAlignment) 1507e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), 1508e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng DAG, TLI); 15097e857201f387d004571e6058e2ea709163500f38Duncan Sands } 15107e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 15117e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Custom: 15127e857201f387d004571e6058e2ea709163500f38Duncan Sands Result = TLI.LowerOperation(Result, DAG); 15137e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 15147e857201f387d004571e6058e2ea709163500f38Duncan Sands case Expand: 15157e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i16 i32 -> STORE i16 15167e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(isTypeLegal(StVT) && "Do not know how to expand this store!"); 1517ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getNode(ISD::TRUNCATE, dl, StVT, Tmp3); 1518da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 1519da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner isVolatile, isNonTemporal, Alignment); 15207e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 1521f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 15228b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 15233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 15243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 1525f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 152645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 15274ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner assert(Result.getValueType() == Op.getValueType() && 15284ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner "Bad legalization!"); 1529fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1530456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner // Make sure that the generated code is itself legal. 1531456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner if (Result != Op) 1532456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner Result = LegalizeOp(Result); 15333e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 153445982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 153545982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 153645982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner AddLegalizedOperand(Op, Result); 15373e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return Result; 15383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 15393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 15403d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli FriedmanSDValue SelectionDAGLegalize::ExpandExtractFromVectorThroughStack(SDValue Op) { 15413d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Vec = Op.getOperand(0); 15423d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Idx = Op.getOperand(1); 15433d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DebugLoc dl = Op.getDebugLoc(); 15443d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Store the value to a temporary stack slot, then LOAD the returned part. 15453d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue StackPtr = DAG.CreateStackTemporary(Vec.getValueType()); 15466229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Vec, StackPtr, 15476229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner MachinePointerInfo(), false, false, 0); 15483d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15493d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Add the offset to the index. 1550aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned EltSize = 1551aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman Vec.getValueType().getVectorElementType().getSizeInBits()/8; 15523d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::MUL, dl, Idx.getValueType(), Idx, 15533d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DAG.getConstant(EltSize, Idx.getValueType())); 15543d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15553d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman if (Idx.getValueType().bitsGT(TLI.getPointerTy())) 15563d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::TRUNCATE, dl, TLI.getPointerTy(), Idx); 15573d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman else 15583d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::ZERO_EXTEND, dl, TLI.getPointerTy(), Idx); 15593d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15603d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman StackPtr = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, StackPtr); 15613d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 1562c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman if (Op.getValueType().isVector()) 1563ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner return DAG.getLoad(Op.getValueType(), dl, Ch, StackPtr,MachinePointerInfo(), 15641e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 15653d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner return DAG.getExtLoad(ISD::EXTLOAD, Op.getValueType(), dl, Ch, StackPtr, 15663d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MachinePointerInfo(), 15673d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Vec.getValueType().getVectorElementType(), 15683d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner false, false, 0); 15693d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman} 15703d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15717ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::ExpandVectorBuildThroughStack(SDNode* Node) { 15727ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We can't handle this case efficiently. Allocate a sufficiently 15737ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // aligned object on the stack, store each element into it, then load 15747ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // the result as a vector. 15757ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Create the stack frame object. 1576e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 15775b8bce11d60694a651965cf019b9cb5d84ed3b90Dale Johannesen EVT EltVT = VT.getVectorElementType(); 15787ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15797ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue FIPtr = DAG.CreateStackTemporary(VT); 1580ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int FI = cast<FrameIndexSDNode>(FIPtr.getNode())->getIndex(); 1581ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo PtrInfo = MachinePointerInfo::getFixedStack(FI); 15827ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15837ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Emit a store of each element to the stack slot. 15847ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SmallVector<SDValue, 8> Stores; 1585aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned TypeByteSize = EltVT.getSizeInBits() / 8; 15867ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Store (in the right endianness) the elements to memory. 15877ef3d178660b82d1571757e49f44b004d772a116Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 15887ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Ignore undef elements. 15897ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (Node->getOperand(i).getOpcode() == ISD::UNDEF) continue; 15907ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15917ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Offset = TypeByteSize*i; 15927ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15937ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Idx = DAG.getConstant(Offset, FIPtr.getValueType()); 15947ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Idx = DAG.getNode(ISD::ADD, dl, FIPtr.getValueType(), FIPtr, Idx); 15957ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15969949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman // If the destination vector element type is narrower than the source 15979949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman // element type, only store the bits necessary. 15989949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman if (EltVT.bitsLT(Node->getOperand(i).getValueType().getScalarType())) { 15995b8bce11d60694a651965cf019b9cb5d84ed3b90Dale Johannesen Stores.push_back(DAG.getTruncStore(DAG.getEntryNode(), dl, 1600ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Node->getOperand(i), Idx, 1601ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner PtrInfo.getWithOffset(Offset), 16021e559443a17d1b335f697551c6263ba60d5dd827David Greene EltVT, false, false, 0)); 1603eb38ebf15c326a5bb45ca9da6329cdf19ad6df95Mon P Wang } else 16046e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach Stores.push_back(DAG.getStore(DAG.getEntryNode(), dl, 1605ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Node->getOperand(i), Idx, 1606ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner PtrInfo.getWithOffset(Offset), 16071e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0)); 16087ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 16097ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16107ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue StoreChain; 16117ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (!Stores.empty()) // Not all undef elements? 1612825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson StoreChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 16137ef3d178660b82d1571757e49f44b004d772a116Eli Friedman &Stores[0], Stores.size()); 16147ef3d178660b82d1571757e49f44b004d772a116Eli Friedman else 16157ef3d178660b82d1571757e49f44b004d772a116Eli Friedman StoreChain = DAG.getEntryNode(); 16167ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16177ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Result is a load from the stack slot. 1618ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner return DAG.getLoad(VT, dl, StoreChain, FIPtr, PtrInfo, false, false, 0); 16197ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 16207ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16214bc8c718218159fe410462f6e3670e7cb76c0c04Eli FriedmanSDValue SelectionDAGLegalize::ExpandFCOPYSIGN(SDNode* Node) { 16224bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 16234bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = Node->getOperand(0); 16244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = Node->getOperand(1); 16255d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands 16265d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Get the sign bit of the RHS. First obtain a value that has the same 16275d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // sign as the sign bit, i.e. negative if and only if the sign bit is 1. 16284bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignBit; 16295d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands EVT FloatVT = Tmp2.getValueType(); 16305d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands EVT IVT = EVT::getIntegerVT(*DAG.getContext(), FloatVT.getSizeInBits()); 16314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (isTypeLegal(IVT)) { 16325d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Convert to an integer with the same sign bit. 1633bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SignBit = DAG.getNode(ISD::BITCAST, dl, IVT, Tmp2); 16344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else { 16355d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Store the float to memory, then load the sign part out as an integer. 16365d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands MVT LoadTy = TLI.getPointerTy(); 16375d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // First create a temporary that is aligned for both the load and store. 16385d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SDValue StackPtr = DAG.CreateStackTemporary(FloatVT, LoadTy); 16395d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Then store the float to it. 16404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Ch = 16416229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner DAG.getStore(DAG.getEntryNode(), dl, Tmp2, StackPtr, MachinePointerInfo(), 16421e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 16435d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands if (TLI.isBigEndian()) { 16445d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands assert(FloatVT.isByteSized() && "Unsupported floating point type!"); 16455d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Load out a legal integer with the same sign bit as the float. 1646ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SignBit = DAG.getLoad(LoadTy, dl, Ch, StackPtr, MachinePointerInfo(), 1647ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, 0); 16485d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands } else { // Little endian 16495d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SDValue LoadPtr = StackPtr; 16505d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // The float may be wider than the integer we are going to load. Advance 16515d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // the pointer so that the loaded integer will contain the sign bit. 16525d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands unsigned Strides = (FloatVT.getSizeInBits()-1)/LoadTy.getSizeInBits(); 16535d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands unsigned ByteOffset = (Strides * LoadTy.getSizeInBits()) / 8; 16545d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands LoadPtr = DAG.getNode(ISD::ADD, dl, LoadPtr.getValueType(), 16555d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands LoadPtr, DAG.getIntPtrConstant(ByteOffset)); 16565d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Load a legal integer containing the sign bit. 1657ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SignBit = DAG.getLoad(LoadTy, dl, Ch, LoadPtr, MachinePointerInfo(), 1658ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, 0); 16595d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Move the sign bit to the top bit of the loaded integer. 16605d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands unsigned BitShift = LoadTy.getSizeInBits() - 16615d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands (FloatVT.getSizeInBits() - 8 * ByteOffset); 16625d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands assert(BitShift < LoadTy.getSizeInBits() && "Pointer advanced wrong?"); 16635d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands if (BitShift) 16645d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SignBit = DAG.getNode(ISD::SHL, dl, LoadTy, SignBit, 16655d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands DAG.getConstant(BitShift,TLI.getShiftAmountTy())); 16665d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands } 16674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16685d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Now get the sign bit proper, by seeing whether the value is negative. 16695d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SignBit = DAG.getSetCC(dl, TLI.getSetCCResultType(SignBit.getValueType()), 16705d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SignBit, DAG.getConstant(0, SignBit.getValueType()), 16715d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands ISD::SETLT); 16724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Get the absolute value of the result. 16734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue AbsVal = DAG.getNode(ISD::FABS, dl, Tmp1.getValueType(), Tmp1); 16744bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Select between the nabs and abs value based on the sign bit of 16754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // the input. 16764bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getNode(ISD::SELECT, dl, AbsVal.getValueType(), SignBit, 16774bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getNode(ISD::FNEG, dl, AbsVal.getValueType(), AbsVal), 16784bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman AbsVal); 16794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16804bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16814bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedmanvoid SelectionDAGLegalize::ExpandDYNAMIC_STACKALLOC(SDNode* Node, 16824bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results) { 16834bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned SPReg = TLI.getStackPointerRegisterToSaveRestore(); 16844bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert(SPReg && "Target cannot require DYNAMIC_STACKALLOC expansion and" 16854bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman " not tell us which reg is the stack pointer!"); 16864bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 1687e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 16884bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = SDValue(Node, 0); 16894bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = SDValue(Node, 1); 16904bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp3 = Node->getOperand(2); 16914bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Tmp1.getOperand(0); 16924bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16934bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Chain the dynamic stack allocation so that it doesn't modify the stack 16944bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // pointer when other instructions are using the stack. 16954bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(0, true)); 16964bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16974bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Size = Tmp2.getOperand(1); 16984bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SP = DAG.getCopyFromReg(Chain, dl, SPReg, VT); 16994bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = SP.getValue(1); 17004bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Align = cast<ConstantSDNode>(Tmp3)->getZExtValue(); 170155e59c186303ff02c0be7429da3b1b36c347f164Dan Gohman unsigned StackAlign = TM.getFrameInfo()->getStackAlignment(); 17024bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Align > StackAlign) 17034bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SP = DAG.getNode(ISD::AND, dl, VT, SP, 17044bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getConstant(-(uint64_t)Align, VT)); 17054bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, SP, Size); // Value 17064bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCopyToReg(Chain, dl, SPReg, Tmp1); // Output chain 17074bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 17084bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp2 = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(0, true), 17094bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getIntPtrConstant(0, true), SDValue()); 17104bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 17114bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 17124bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp2); 17134bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 17144bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 17157f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// LegalizeSetCCCondCode - Legalize a SETCC with given LHS and RHS and 1716f77fc92b03efe455008474894d217282e2a03cadDan Gohman/// condition code CC on the current target. This routine expands SETCC with 17177f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// illegal condition code into AND / OR of multiple SETCC values. 1718e50ed30282bb5b4a9ed952580523f2dda16215acOwen Andersonvoid SelectionDAGLegalize::LegalizeSetCCCondCode(EVT VT, 17197f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng SDValue &LHS, SDValue &RHS, 1720bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue &CC, 1721775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DebugLoc dl) { 1722e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = LHS.getValueType(); 17237f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CCCode = cast<CondCodeSDNode>(CC)->get(); 17247f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (TLI.getCondCodeAction(CCCode, OpVT)) { 172535a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unknown condition code action!"); 17267f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Legal: 17277f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // Nothing to do. 17287f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 17297f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Expand: { 17307f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CC1 = ISD::SETCC_INVALID, CC2 = ISD::SETCC_INVALID; 17317f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng unsigned Opc = 0; 17327f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (CCCode) { 173335a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Don't know how to expand this condition!"); 1734e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETO; Opc = ISD::AND; break; 1735e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGT: CC1 = ISD::SETGT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1736e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGE: CC1 = ISD::SETGE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1737e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLT: CC1 = ISD::SETLT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1738e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLE: CC1 = ISD::SETLE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1739e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETONE: CC1 = ISD::SETNE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1740e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1741e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGT: CC1 = ISD::SETGT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1742e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGE: CC1 = ISD::SETGE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1743e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULT: CC1 = ISD::SETLT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1744e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULE: CC1 = ISD::SETLE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1745e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUNE: CC1 = ISD::SETNE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 17467f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // FIXME: Implement more expansions. 17477f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17487f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 1749bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC1 = DAG.getSetCC(dl, VT, LHS, RHS, CC1); 1750bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC2 = DAG.getSetCC(dl, VT, LHS, RHS, CC2); 1751bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen LHS = DAG.getNode(Opc, dl, VT, SetCC1, SetCC2); 17527f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng RHS = SDValue(); 17537f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng CC = SDValue(); 17547f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 17557f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17567f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17577f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng} 17587f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 17591401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// EmitStackConvert - Emit a store/load combination to the stack. This stores 17601401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// SrcOp to a stack slot of type SlotVT, truncating it if needed. It then does 17611401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// a load from the stack slot to DestVT, extending it if needed. 17621401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// The resultant code need not be legal. 1763475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::EmitStackConvert(SDValue SrcOp, 1764e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SlotVT, 1765e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 17668a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 176735481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Create the stack frame object. 1768ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson unsigned SrcAlign = 1769ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getTargetData()->getPrefTypeAlignment(SrcOp.getValueType(). 177023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson getTypeForEVT(*DAG.getContext())); 1771475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FIPtr = DAG.CreateStackTemporary(SlotVT, SrcAlign); 1772fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1773ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(FIPtr); 1774ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = StackPtrFI->getIndex(); 1775da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner MachinePointerInfo PtrInfo = MachinePointerInfo::getFixedStack(SPFI); 1776ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 177783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SrcSize = SrcOp.getValueType().getSizeInBits(); 177883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SlotSize = SlotVT.getSizeInBits(); 177983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned DestSize = DestVT.getSizeInBits(); 1780adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng const Type *DestType = DestVT.getTypeForEVT(*DAG.getContext()); 1781adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng unsigned DestAlign = TLI.getTargetData()->getPrefTypeAlignment(DestType); 1782fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17831401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // Emit a store to the stack slot. Use a truncstore if the input value is 17841401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // later than DestVT. 1785475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store; 1786ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 17871401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SrcSize > SlotSize) 17888a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getTruncStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 1789da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner PtrInfo, SlotVT, false, false, SrcAlign); 17901401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner else { 17911401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SrcSize == SlotSize && "Invalid store"); 17928a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 1793da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner PtrInfo, false, false, SrcAlign); 17941401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner } 1795fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 179635481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Result is a load from the stack slot. 17971401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SlotSize == DestSize) 1798da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner return DAG.getLoad(DestVT, dl, Store, FIPtr, PtrInfo, 1799ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, DestAlign); 1800fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18011401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SlotSize < DestSize && "Unknown extension!"); 1802ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner return DAG.getExtLoad(ISD::EXTLOAD, DestVT, dl, Store, FIPtr, 1803da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner PtrInfo, SlotVT, false, false, DestAlign); 180435481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner} 180535481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner 1806475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandSCALAR_TO_VECTOR(SDNode *Node) { 18078a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl = Node->getDebugLoc(); 18084352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // Create a vector sized/aligned stack slot, store the value to element #0, 18094352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // then load the whole vector back out. 1810475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(Node->getValueType(0)); 181169de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 1812ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(StackPtr); 1813ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = StackPtrFI->getIndex(); 1814ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 1815b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands SDValue Ch = DAG.getTruncStore(DAG.getEntryNode(), dl, Node->getOperand(0), 1816b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands StackPtr, 181785ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getFixedStack(SPFI), 18181e559443a17d1b335f697551c6263ba60d5dd827David Greene Node->getValueType(0).getVectorElementType(), 18191e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 18208a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(Node->getValueType(0), dl, Ch, StackPtr, 182185ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getFixedStack(SPFI), 18221e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 18234352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 18244352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 18254352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 1826ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner/// ExpandBUILD_VECTOR - Expand a BUILD_VECTOR node on targets that don't 182707a96765daedf180a7102d39fe56c499878312b7Dan Gohman/// support the operation, but do support the resultant vector type. 1828475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandBUILD_VECTOR(SDNode *Node) { 182926cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson unsigned NumElems = Node->getNumOperands(); 18307a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Value1, Value2; 183126cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson DebugLoc dl = Node->getDebugLoc(); 1832e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1833e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(0).getValueType(); 1834e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 1835fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1836fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // If the only non-undef value is the low element, turn this into a 183787100e0b83b808757bf44dabecd1d1048255d1adChris Lattner // SCALAR_TO_VECTOR node. If this is { X, X, X, X }, determine X. 1838ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner bool isOnlyLowElement = true; 18397a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman bool MoreThanTwoValues = false; 18402eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner bool isConstant = true; 18417a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 1842475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue V = Node->getOperand(i); 18437a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 18447a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 18457a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (i > 0) 1846ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner isOnlyLowElement = false; 18477a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!isa<ConstantFPSDNode>(V) && !isa<ConstantSDNode>(V)) 18482eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner isConstant = false; 18497a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 18507a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) { 18517a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value1 = V; 18527a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (!Value2.getNode()) { 18537a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V != Value1) 18547a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value2 = V; 18557a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (V != Value1 && V != Value2) { 18567a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman MoreThanTwoValues = true; 18577a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 1858ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1859fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18607a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) 18617a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getUNDEF(VT); 18627a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 18637a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (isOnlyLowElement) 186426cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson return DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Node->getOperand(0)); 1865fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18662eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // If all elements are constants, create a load from the constant pool. 1867ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner if (isConstant) { 1868ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner std::vector<Constant*> CV; 1869033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng for (unsigned i = 0, e = NumElems; i != e; ++i) { 1870fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel if (ConstantFPSDNode *V = 1871ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner dyn_cast<ConstantFPSDNode>(Node->getOperand(i))) { 18724fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman CV.push_back(const_cast<ConstantFP *>(V->getConstantFPValue())); 1873fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel } else if (ConstantSDNode *V = 1874ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson dyn_cast<ConstantSDNode>(Node->getOperand(i))) { 18759a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen if (OpVT==EltVT) 18769a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CV.push_back(const_cast<ConstantInt *>(V->getConstantIntValue())); 18779a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen else { 18789a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // If OpVT and EltVT don't match, EltVT is not legal and the 18799a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // element values have been promoted/truncated earlier. Undo this; 18809a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // we don't want a v16i8 to become a v16i32 for example. 18819a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen const ConstantInt *CI = V->getConstantIntValue(); 18829a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CV.push_back(ConstantInt::get(EltVT.getTypeForEVT(*DAG.getContext()), 18839a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CI->getZExtValue())); 18849a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen } 1885ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } else { 1886ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner assert(Node->getOperand(i).getOpcode() == ISD::UNDEF); 18879a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen const Type *OpNTy = EltVT.getTypeForEVT(*DAG.getContext()); 18889e9a0d5fc26878e51a58a8b57900fcbf952c2691Owen Anderson CV.push_back(UndefValue::get(OpNTy)); 1889ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1890ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1891af7ec975870f92245f1f1484ac80a1e2db6a0afaOwen Anderson Constant *CP = ConstantVector::get(CV); 1892475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(CP, TLI.getPointerTy()); 18931606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 18948a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(VT, dl, DAG.getEntryNode(), CPIdx, 189585ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getConstantPool(), 18961e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, Alignment); 1897ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1898fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18997a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!MoreThanTwoValues) { 19007a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SmallVector<int, 8> ShuffleVec(NumElems, -1); 19017a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 19027a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue V = Node->getOperand(i); 19037a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 19047a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 19057a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman ShuffleVec[i] = V == Value1 ? 0 : NumElems; 19067a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 19077a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (TLI.isShuffleMaskLegal(ShuffleVec, Node->getValueType(0))) { 19082eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Get the splatted value into the low element of a vector register. 19097a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec1 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value1); 19107a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec2; 19117a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (Value2.getNode()) 19127a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value2); 19137a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman else 19147a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getUNDEF(VT); 1915fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 19162eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Return shuffle(LowValVec, undef, <0,0,0,0>) 19177a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getVectorShuffle(VT, dl, Vec1, Vec2, ShuffleVec.data()); 1918033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1919033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1920fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 19217ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, we can't handle this case efficiently. 19227ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return ExpandVectorBuildThroughStack(Node); 1923ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner} 1924ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner 192577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// ExpandLibCall - Expand a node into a call to a libcall. If the result value 192677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// does not fit into a register, return the lo part and set the hi part to the 192777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// by-reg argument. If it does fit into a single register, return the result 192877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// and leave the Hi part unset. 1929475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, 193047b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman bool isSigned) { 19316831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "Cannot overlap legalization of calls!"); 1932fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // The input chain to this libcall is the entry node of the function. 19336831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalizing the call will automatically add the previous call to the 19346831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // dependence. 1935475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InChain = DAG.getEntryNode(); 1936fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 193777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 193847857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer TargetLowering::ArgListEntry Entry; 193977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 1940e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ArgVT = Node->getOperand(i).getValueType(); 194123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext()); 1942fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Entry.Node = Node->getOperand(i); Entry.Ty = ArgTy; 1943d0b82b301d700217a716526f9329bb031e0d6578Anton Korobeynikov Entry.isSExt = isSigned; 194400fee65fd21f9615d1a604b8b7d42cd16a3f6b47Duncan Sands Entry.isZExt = !isSigned; 194547857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer Args.push_back(Entry); 194677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 1947056292fd738924f3f7703725d8f630983794b5a5Bill Wendling SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 19480c39719bfc7d0b3e61fbd55e1115184a1d5f6ae7Mon P Wang TLI.getPointerTy()); 1949edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 19500d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Splice the libcall in wherever FindInputOutputChains tells us to. 195123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext()); 19523d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng 19533d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng // isTailCall may be true since the callee does not reference caller stack 19543d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng // frame. Check if it's in the right position. 19553d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng bool isTailCall = isInTailCallPosition(DAG, Node, TLI); 1956ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson std::pair<SDValue, SDValue> CallInfo = 195786098bd6a63d2cdf0c9be9ef3151bd2728281fd7Dale Johannesen TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false, 19583d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng 0, TLI.getLibcallCallingConv(LC), isTailCall, 195998ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 196046ada19645c981a0b7932487d163f7582074a4d9Bill Wendling Callee, Args, DAG, Node->getDebugLoc()); 19610d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 19623d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng if (!CallInfo.second.getNode()) 19633d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng // It's a tailcall, return the chain (which is the DAG root). 19643d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng return DAG.getRoot(); 19653d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng 19666831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call sequence, starting with the chain. This will advance 19676831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // the LastCALLSEQ_END to the legalized version of the CALLSEQ_END node that 19686831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // was added by LowerCallTo (guaranteeing proper serialization of calls). 19696831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(CallInfo.second); 197074807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman return CallInfo.first; 197122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 197222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 1973e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach// ExpandChainLibCall - Expand a node into a call to a libcall. Similar to 1974e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach// ExpandLibCall except that the first operand is the in-chain. 1975e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbachstd::pair<SDValue, SDValue> 1976e03262fcfc09356a0e3ec589041bc2e0248944e9Jim GrosbachSelectionDAGLegalize::ExpandChainLibCall(RTLIB::Libcall LC, 1977e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach SDNode *Node, 1978e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach bool isSigned) { 1979e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach assert(!IsLegalizingCall && "Cannot overlap legalization of calls!"); 1980e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach SDValue InChain = Node->getOperand(0); 1981e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 1982e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach TargetLowering::ArgListTy Args; 1983e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach TargetLowering::ArgListEntry Entry; 1984e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach for (unsigned i = 1, e = Node->getNumOperands(); i != e; ++i) { 1985e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach EVT ArgVT = Node->getOperand(i).getValueType(); 1986e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach const Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext()); 1987e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Entry.Node = Node->getOperand(i); 1988e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Entry.Ty = ArgTy; 1989e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Entry.isSExt = isSigned; 1990e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Entry.isZExt = !isSigned; 1991e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Args.push_back(Entry); 1992e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 1993e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 1994e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach TLI.getPointerTy()); 1995e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 1996e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach // Splice the libcall in wherever FindInputOutputChains tells us to. 1997e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach const Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext()); 1998e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach std::pair<SDValue, SDValue> CallInfo = 1999e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false, 20003d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng 0, TLI.getLibcallCallingConv(LC), /*isTailCall=*/false, 2001e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach /*isReturnValueUsed=*/true, 2002e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Callee, Args, DAG, Node->getDebugLoc()); 2003e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2004e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach // Legalize the call sequence, starting with the chain. This will advance 2005e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach // the LastCALLSEQ_END to the legalized version of the CALLSEQ_END node that 2006e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach // was added by LowerCallTo (guaranteeing proper serialization of calls). 2007e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach LegalizeOp(CallInfo.second); 2008e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach return CallInfo; 2009e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach} 2010e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2011f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandFPLibCall(SDNode* Node, 2012f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F32, 2013f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, 2014f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F80, 2015f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128) { 2016f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 2017825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 201835a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unexpected request for libcall!"); 2019825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f32: LC = Call_F32; break; 2020825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f64: LC = Call_F64; break; 2021825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f80: LC = Call_F80; break; 2022825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::ppcf128: LC = Call_PPCF128; break; 2023f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 2024f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, false); 2025f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 2026f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 2027f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandIntLibCall(SDNode* Node, bool isSigned, 20288983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I8, 2029f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I16, 2030f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I32, 2031f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I64, 2032f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128) { 2033f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 2034825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 203535a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unexpected request for libcall!"); 20368983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i8: LC = Call_I8; break; 20378983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i16: LC = Call_I16; break; 20388983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i32: LC = Call_I32; break; 20398983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i64: LC = Call_I64; break; 2040825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i128: LC = Call_I128; break; 2041f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 2042f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, isSigned); 2043f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 2044f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 204522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandLegalINT_TO_FP - This function is responsible for legalizing a 204622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// INT_TO_FP operation of the specified operand when the target requests that 204722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we expand it. At this point, we know that the result and operand types are 204822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target. 2049475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLegalINT_TO_FP(bool isSigned, 2050475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0, 2051e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2052af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 2053825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Op0.getValueType() == MVT::i32) { 205422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // simple 32-bit [signed|unsigned] integer to float/double expansion 2055fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 205623594d4537fb88a963c6d6993af5027eac9bfbacChris Lattner // Get the stack frame index of a 8 byte buffer. 2057825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue StackSlot = DAG.CreateStackTemporary(MVT::f64); 2058fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 205922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // word offset constant for Hi/Lo address computation 2060475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue WordOff = DAG.getConstant(sizeof(int), TLI.getPointerTy()); 206122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // set up Hi and Lo (into buffer) address based on endian 2062475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = StackSlot; 2063fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Lo = DAG.getNode(ISD::ADD, dl, 2064ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getPointerTy(), StackSlot, WordOff); 2065408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner if (TLI.isLittleEndian()) 2066408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner std::swap(Hi, Lo); 2067fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 206822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // if signed map to unsigned space 2069475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0Mapped; 207022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) { 207122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // constant used to invert sign bit (signed to unsigned mapping) 2072825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue SignBit = DAG.getConstant(0x80000000u, MVT::i32); 2073825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Op0Mapped = DAG.getNode(ISD::XOR, dl, MVT::i32, Op0, SignBit); 207422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } else { 207522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Op0Mapped = Op0; 207622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 207722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the lo of the constructed double - based on integer input 2078af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Store1 = DAG.getStore(DAG.getEntryNode(), dl, 20796229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner Op0Mapped, Lo, MachinePointerInfo(), 20801e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 208122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // initial hi portion of constructed double 2082825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue InitialHi = DAG.getConstant(0x43300000u, MVT::i32); 208322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the hi of the constructed double - biased exponent 20846229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner SDValue Store2 = DAG.getStore(Store1, dl, InitialHi, Hi, 20856229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner MachinePointerInfo(), 20866229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner false, false, 0); 208722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // load the constructed double 2088ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Load = DAG.getLoad(MVT::f64, dl, Store2, StackSlot, 2089ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(), false, false, 0); 209022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // FP constant to bias correct the final result 2091475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Bias = DAG.getConstantFP(isSigned ? 2092ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000080000000ULL) : 2093ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000000000000ULL), 2094825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::f64); 209522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // subtract the bias 2096825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Sub = DAG.getNode(ISD::FSUB, dl, MVT::f64, Load, Bias); 209722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // final result 2098475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result; 209922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // handle final rounding 2100825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (DestVT == MVT::f64) { 210122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // do nothing 210222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Result = Sub; 2103825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsLT(MVT::f64)) { 2104af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_ROUND, dl, DestVT, Sub, 21050bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(0)); 2106825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsGT(MVT::f64)) { 2107af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, DestVT, Sub); 210822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 210922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Result; 211022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 211122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner assert(!isSigned && "Legalize cannot Expand SINT_TO_FP for i64 yet"); 2112a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen // Code below here assumes !isSigned without checking again. 21130fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman 21140fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // Implementation of unsigned i64 to f64 following the algorithm in 21150fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // __floatundidf in compiler_rt. This implementation has the advantage 21160fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // of performing rounding correctly, both in the default rounding mode 21170fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // and in all alternate rounding modes. 21180fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // TODO: Generalize this for use with other types. 21190fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman if (Op0.getValueType() == MVT::i64 && DestVT == MVT::f64) { 21200fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue TwoP52 = 21210fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstant(UINT64_C(0x4330000000000000), MVT::i64); 21220fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue TwoP84PlusTwoP52 = 21230fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstantFP(BitsToDouble(UINT64_C(0x4530000000100000)), MVT::f64); 21240fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue TwoP84 = 21250fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstant(UINT64_C(0x4530000000000000), MVT::i64); 21260fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman 21270fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue Lo = DAG.getZeroExtendInReg(Op0, dl, MVT::i32); 21280fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue Hi = DAG.getNode(ISD::SRL, dl, MVT::i64, Op0, 21290fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstant(32, MVT::i64)); 21300fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue LoOr = DAG.getNode(ISD::OR, dl, MVT::i64, Lo, TwoP52); 21310fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue HiOr = DAG.getNode(ISD::OR, dl, MVT::i64, Hi, TwoP84); 2132bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue LoFlt = DAG.getNode(ISD::BITCAST, dl, MVT::f64, LoOr); 2133bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue HiFlt = DAG.getNode(ISD::BITCAST, dl, MVT::f64, HiOr); 21346e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach SDValue HiSub = DAG.getNode(ISD::FSUB, dl, MVT::f64, HiFlt, 21356e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach TwoP84PlusTwoP52); 21360fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman return DAG.getNode(ISD::FADD, dl, MVT::f64, LoFlt, HiSub); 21370fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman } 21380fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman 21393a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // Implementation of unsigned i64 to f32. 2140a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen // TODO: Generalize this for use with other types. 2141a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen if (Op0.getValueType() == MVT::i64 && DestVT == MVT::f32) { 21423a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // For unsigned conversions, convert them to signed conversions using the 21433a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // algorithm from the x86_64 __floatundidf in compiler_rt. 21443a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson if (!isSigned) { 21453a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue Fast = DAG.getNode(ISD::SINT_TO_FP, dl, MVT::f32, Op0); 2146bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 21473a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue ShiftConst = DAG.getConstant(1, TLI.getShiftAmountTy()); 21483a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue Shr = DAG.getNode(ISD::SRL, dl, MVT::i64, Op0, ShiftConst); 21493a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue AndConst = DAG.getConstant(1, MVT::i64); 21503a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue And = DAG.getNode(ISD::AND, dl, MVT::i64, Op0, AndConst); 21513a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue Or = DAG.getNode(ISD::OR, dl, MVT::i64, And, Shr); 2152bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 21533a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue SignCvt = DAG.getNode(ISD::SINT_TO_FP, dl, MVT::f32, Or); 21543a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue Slow = DAG.getNode(ISD::FADD, dl, MVT::f32, SignCvt, SignCvt); 2155bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 21563a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // TODO: This really should be implemented using a branch rather than a 2157bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck // select. We happen to get lucky and machinesink does the right 2158bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck // thing most of the time. This would be a good candidate for a 21593a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson //pseudo-op, or, even better, for whole-function isel. 2160bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue SignBitTest = DAG.getSetCC(dl, TLI.getSetCCResultType(MVT::i64), 21613a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson Op0, DAG.getConstant(0, MVT::i64), ISD::SETLT); 21623a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson return DAG.getNode(ISD::SELECT, dl, MVT::f32, SignBitTest, Slow, Fast); 21633a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson } 2164bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 21653a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // Otherwise, implement the fully general conversion. 2166a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen EVT SHVT = TLI.getShiftAmountTy(); 2167bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 21686e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach SDValue And = DAG.getNode(ISD::AND, dl, MVT::i64, Op0, 2169a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(UINT64_C(0xfffffffffffff800), MVT::i64)); 2170a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Or = DAG.getNode(ISD::OR, dl, MVT::i64, And, 2171a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(UINT64_C(0x800), MVT::i64)); 21726e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach SDValue And2 = DAG.getNode(ISD::AND, dl, MVT::i64, Op0, 2173a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(UINT64_C(0x7ff), MVT::i64)); 2174a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Ne = DAG.getSetCC(dl, TLI.getSetCCResultType(MVT::i64), 2175a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen And2, DAG.getConstant(UINT64_C(0), MVT::i64), ISD::SETNE); 2176a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Sel = DAG.getNode(ISD::SELECT, dl, MVT::i64, Ne, Or, Op0); 2177a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Ge = DAG.getSetCC(dl, TLI.getSetCCResultType(MVT::i64), 2178a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen Op0, DAG.getConstant(UINT64_C(0x0020000000000000), MVT::i64), 21793a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson ISD::SETUGE); 2180a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Sel2 = DAG.getNode(ISD::SELECT, dl, MVT::i64, Ge, Sel, Op0); 2181bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 2182a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Sh = DAG.getNode(ISD::SRL, dl, MVT::i64, Sel2, 2183a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(32, SHVT)); 2184a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Trunc = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Sh); 2185a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fcvt = DAG.getNode(ISD::UINT_TO_FP, dl, MVT::f64, Trunc); 2186a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue TwoP32 = 2187a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstantFP(BitsToDouble(UINT64_C(0x41f0000000000000)), MVT::f64); 2188a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fmul = DAG.getNode(ISD::FMUL, dl, MVT::f64, TwoP32, Fcvt); 2189a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Lo = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Sel2); 2190a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fcvt2 = DAG.getNode(ISD::UINT_TO_FP, dl, MVT::f64, Lo); 2191a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fadd = DAG.getNode(ISD::FADD, dl, MVT::f64, Fmul, Fcvt2); 2192a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen return DAG.getNode(ISD::FP_ROUND, dl, MVT::f32, Fadd, 2193a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getIntPtrConstant(0)); 2194a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen } 2195a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen 2196b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue Tmp1 = DAG.getNode(ISD::SINT_TO_FP, dl, DestVT, Op0); 2197b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman 2198b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue SignSet = DAG.getSetCC(dl, TLI.getSetCCResultType(Op0.getValueType()), 2199b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Op0, DAG.getConstant(0, Op0.getValueType()), 2200b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman ISD::SETLT); 2201b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue Zero = DAG.getIntPtrConstant(0), Four = DAG.getIntPtrConstant(4); 2202b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue CstOffset = DAG.getNode(ISD::SELECT, dl, Zero.getValueType(), 2203b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SignSet, Four, Zero); 2204b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman 2205b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman // If the sign bit of the integer is set, the large number will be treated 2206b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman // as a negative number. To counteract this, the dynamic code adds an 2207b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman // offset depending on the data type. 2208b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman uint64_t FF; 2209b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman switch (Op0.getValueType().getSimpleVT().SimpleTy) { 221035a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unsupported integer type!"); 2211b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i8 : FF = 0x43800000ULL; break; // 2^8 (as a float) 2212b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i16: FF = 0x47800000ULL; break; // 2^16 (as a float) 2213b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i32: FF = 0x4F800000ULL; break; // 2^32 (as a float) 2214b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i64: FF = 0x5F800000ULL; break; // 2^64 (as a float) 2215b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman } 2216b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman if (TLI.isLittleEndian()) FF <<= 32; 2217b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Constant *FudgeFactor = ConstantInt::get( 2218b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Type::getInt64Ty(*DAG.getContext()), FF); 2219b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman 2220b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue CPIdx = DAG.getConstantPool(FudgeFactor, TLI.getPointerTy()); 2221b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 2222b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman CPIdx = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), CPIdx, CstOffset); 2223b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Alignment = std::min(Alignment, 4u); 2224b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue FudgeInReg; 2225b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman if (DestVT == MVT::f32) 2226b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman FudgeInReg = DAG.getLoad(MVT::f32, dl, DAG.getEntryNode(), CPIdx, 222785ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getConstantPool(), 2228b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman false, false, Alignment); 2229b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman else { 2230b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman FudgeInReg = 2231bcc8017c738e92d9c1af221b11c4916cb524184eEvan Cheng LegalizeOp(DAG.getExtLoad(ISD::EXTLOAD, DestVT, dl, 2232b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman DAG.getEntryNode(), CPIdx, 223385ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getConstantPool(), 2234b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman MVT::f32, false, false, Alignment)); 2235b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman } 223622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2237b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman return DAG.getNode(ISD::FADD, dl, DestVT, Tmp1, FudgeInReg); 223822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 223922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 224022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalINT_TO_FP - This function is responsible for legalizing a 224122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// *INT_TO_FP operation of the specified operand when the target requests that 224222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 224322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal UINT_TO_FP or SINT_TO_FP 224422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that takes a larger input. 2245475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalINT_TO_FP(SDValue LegalOp, 2246e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2247af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2248af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 224922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate *INT_TO_FP operation to use. 2250e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewInTy = LegalOp.getValueType(); 225122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 225222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 225322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 225422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 225522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2256825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewInTy = (MVT::SimpleValueType)(NewInTy.getSimpleVT().SimpleTy+1); 225783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewInTy.isInteger() && "Ran out of possibilities!"); 225822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 225922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports SINT_TO_FP of this type, use it. 22603be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::SINT_TO_FP, NewInTy)) { 22613be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::SINT_TO_FP; 22623be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 226322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 226422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) continue; 226522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 226622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports UINT_TO_FP of this type, use it. 22673be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::UINT_TO_FP, NewInTy)) { 22683be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::UINT_TO_FP; 22693be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 227022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 227122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 227222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 227322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 227422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 227522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Okay, we found the operation and type to use. Zero extend our input to the 227622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // desired type then run the operation on it. 2277af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(OpToUse, dl, DestVT, 227822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, 2279af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen dl, NewInTy, LegalOp)); 228077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 228177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 228222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalFP_TO_INT - This function is responsible for legalizing a 228322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// FP_TO_*INT operation of the specified operand when the target requests that 228422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 228522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal FP_TO_UINT or FP_TO_SINT 228622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that returns a larger result. 2287475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalFP_TO_INT(SDValue LegalOp, 2288e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2289af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2290af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 229122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate FP_TO*INT operation to use. 2292e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewOutTy = DestVT; 22939c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 229422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 2295e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 229622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 229722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2298825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewOutTy = (MVT::SimpleValueType)(NewOutTy.getSimpleVT().SimpleTy+1); 229983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewOutTy.isInteger() && "Ran out of possibilities!"); 230066de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner 23013be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_SINT, NewOutTy)) { 230222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_SINT; 230322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 230422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 2305e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 23063be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_UINT, NewOutTy)) { 230722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_UINT; 230822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 2309e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner } 23100d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 231122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 2312a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner } 2313a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner 2314fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 231527a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Okay, we found the operation and type to use. 2316af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Operation = DAG.getNode(OpToUse, dl, NewOutTy, LegalOp); 2317126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 231827a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Truncate the result of the extended FP_TO_*INT operation to the desired 231927a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // size. 2320af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(ISD::TRUNCATE, dl, DestVT, Operation); 232122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 232213689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner 232322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBSWAP - Open code the operations for BSWAP of the specified operation. 232422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 23258a782a2a8c2f0c82f292d03a3f707232b0bae27bDale JohannesenSDValue SelectionDAGLegalize::ExpandBSWAP(SDValue Op, DebugLoc dl) { 2326e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2327e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SHVT = TLI.getShiftAmountTy(); 2328475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4, Tmp5, Tmp6, Tmp7, Tmp8; 2329825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (VT.getSimpleVT().SimpleTy) { 233035a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unhandled Expand type in BSWAP!"); 2331825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i16: 23328a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 23338a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 23348a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp1, Tmp2); 2335825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i32: 23368a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 23378a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 23388a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 23398a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 23408a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(0xFF0000, VT)); 23418a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(0xFF00, VT)); 23428a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 23438a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 23448a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 2345825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i64: 23468a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(56, SHVT)); 23478a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(40, SHVT)); 23488a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 23498a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 23508a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 23518a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 23528a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(40, SHVT)); 23538a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(56, SHVT)); 23548a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::AND, dl, VT, Tmp7, DAG.getConstant(255ULL<<48, VT)); 23558a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::AND, dl, VT, Tmp6, DAG.getConstant(255ULL<<40, VT)); 23568a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::AND, dl, VT, Tmp5, DAG.getConstant(255ULL<<32, VT)); 23578a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::AND, dl, VT, Tmp4, DAG.getConstant(255ULL<<24, VT)); 23588a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(255ULL<<16, VT)); 23598a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(255ULL<<8 , VT)); 23608a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp7); 23618a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::OR, dl, VT, Tmp6, Tmp5); 23628a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 23638a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 23648a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp6); 23658a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 23668a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp4); 23670d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner } 236877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 2369edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 237022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBitCount - Expand the specified bitcount instruction into operations. 237122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 2372fdc40a0a696c658d550d894ea03772e5f8af2c94Scott MichelSDValue SelectionDAGLegalize::ExpandBitCount(unsigned Opc, SDValue Op, 23738a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 237422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner switch (Opc) { 237535a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Cannot expand this yet!"); 237622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTPOP: { 237722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner static const uint64_t mask[6] = { 237822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x5555555555555555ULL, 0x3333333333333333ULL, 237922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x0F0F0F0F0F0F0F0FULL, 0x00FF00FF00FF00FFULL, 238022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x0000FFFF0000FFFFULL, 0x00000000FFFFFFFFULL 238122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner }; 2382e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2383e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ShVT = TLI.getShiftAmountTy(); 238483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 238522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 238622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner //x = (x & mask[i][len/8]) + (x >> (1 << i) & mask[i][len/8]) 2387b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands unsigned EltSize = VT.isVector() ? 2388b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands VT.getVectorElementType().getSizeInBits() : len; 2389b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands SDValue Tmp2 = DAG.getConstant(APInt(EltSize, mask[i]), VT); 2390475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2391fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::ADD, dl, VT, 2392e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::AND, dl, VT, Op, Tmp2), 23938a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::AND, dl, VT, 23948a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3), 23958a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2)); 239622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 239722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Op; 239822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 239922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTLZ: { 240022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we do this: 240122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 1); 240222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 2); 240322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // ... 240422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>16); 240522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>32); // for 64-bit input 240622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // return popcount(~x); 240722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // 240822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // but see also: http://www.hackersdelight.org/HDcode/nlz.cc 2409e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2410e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ShVT = TLI.getShiftAmountTy(); 241183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 241222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 2413475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2414fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::OR, dl, VT, Op, 2415e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3)); 241622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 24178a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Op = DAG.getNOT(dl, Op, VT); 24188a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Op); 241922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 242022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTTZ: { 242122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we use: { return popcount(~x & (x - 1)); } 242222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // unless the target has ctlz but not ctpop, in which case we use: 242322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // { return 32 - nlz(~x & (x-1)); } 242422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // see also http://www.hackersdelight.org/HDcode/ntz.cc 2425e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 24268a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue Tmp3 = DAG.getNode(ISD::AND, dl, VT, 24278a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNOT(dl, Op, VT), 24288a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SUB, dl, VT, Op, 24297581bfa2757a3149c6d17c0fe592e5c3808aa843Bill Wendling DAG.getConstant(1, VT))); 243022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If ISD::CTLZ is legal and CTPOP isn't, then do that instead. 2431f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman if (!TLI.isOperationLegalOrCustom(ISD::CTPOP, VT) && 2432f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.isOperationLegalOrCustom(ISD::CTLZ, VT)) 24338a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::SUB, dl, VT, 243483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(VT.getSizeInBits(), VT), 24358a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::CTLZ, dl, VT, Tmp3)); 24368a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Tmp3); 243722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 243822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 243922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 2440e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 2441e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbachstd::pair <SDValue, SDValue> SelectionDAGLegalize::ExpandAtomic(SDNode *Node) { 2442e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach unsigned Opc = Node->getOpcode(); 2443e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach MVT VT = cast<AtomicSDNode>(Node)->getMemoryVT().getSimpleVT(); 2444e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach RTLIB::Libcall LC; 2445e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2446e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (Opc) { 2447e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: 2448e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach llvm_unreachable("Unhandled atomic intrinsic Expand!"); 2449e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2450ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case ISD::ATOMIC_SWAP: 2451ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach switch (VT.SimpleTy) { 2452ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2453ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case MVT::i8: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_1; break; 2454ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case MVT::i16: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_2; break; 2455ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case MVT::i32: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_4; break; 2456ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case MVT::i64: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_8; break; 2457ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach } 2458ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach break; 2459e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_CMP_SWAP: 2460e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2461e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2462e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_1; break; 2463e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_2; break; 2464e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_4; break; 2465e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_8; break; 2466e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2467e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2468e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_ADD: 2469e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2470e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2471e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_ADD_1; break; 2472e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_ADD_2; break; 2473e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_ADD_4; break; 2474e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_ADD_8; break; 2475e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2476e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2477e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_SUB: 2478e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2479e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2480e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_SUB_1; break; 2481e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_SUB_2; break; 2482e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_SUB_4; break; 2483e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_SUB_8; break; 2484e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2485e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2486e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_AND: 2487e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2488e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2489e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_AND_1; break; 2490e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_AND_2; break; 2491e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_AND_4; break; 2492e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_AND_8; break; 2493e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2494e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2495e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_OR: 2496e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2497e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2498e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_OR_1; break; 2499e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_OR_2; break; 2500e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_OR_4; break; 2501e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_OR_8; break; 2502e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2503e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2504e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_XOR: 2505e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2506e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2507e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_XOR_1; break; 2508e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_XOR_2; break; 2509e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_XOR_4; break; 2510e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_XOR_8; break; 2511e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2512e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2513e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_NAND: 2514e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2515e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2516e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_NAND_1; break; 2517e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_NAND_2; break; 2518e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_NAND_4; break; 2519e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_NAND_8; break; 2520e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2521e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2522e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2523e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2524e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach return ExpandChainLibCall(LC, Node, false); 2525e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach} 2526e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 25278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::ExpandNode(SDNode *Node, 25288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 25298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 2530bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 25318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 25328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 25338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 25348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 25358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandBitCount(Node->getOpcode(), Node->getOperand(0), dl); 25368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 25378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 25388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: 2539775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandBSWAP(Node->getOperand(0), dl)); 25408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 25418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 25428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 25438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 25448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, Node->getValueType(0))); 25458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 25468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 25478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(1, Node->getValueType(0))); 25488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 25498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 25508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_LABEL: 25518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::PREFETCH: 25528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAEND: 2553c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach case ISD::EH_SJLJ_LONGJMP: 2554e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach case ISD::EH_SJLJ_DISPATCHSETUP: 2555e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach // If the target didn't expand these, there's nothing to do, so just 2556e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach // preserve the chain and be done. 2557c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach Results.push_back(Node->getOperand(0)); 2558c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach break; 2559c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach case ISD::EH_SJLJ_SETJMP: 2560e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach // If the target didn't expand this, just return 'zero' and preserve the 2561e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach // chain. 2562c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach Results.push_back(DAG.getConstant(0, MVT::i32)); 25638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(0)); 25648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 2565bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach case ISD::MEMBARRIER: { 2566bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach // If the target didn't lower this, lower it to '__sync_synchronize()' call 2567bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach TargetLowering::ArgListTy Args; 2568bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach std::pair<SDValue, SDValue> CallResult = 2569bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach TLI.LowerCallTo(Node->getOperand(0), Type::getVoidTy(*DAG.getContext()), 25703d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng false, false, false, false, 0, CallingConv::C, 25713d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng /*isTailCall=*/false, 2572bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach /*isReturnValueUsed=*/true, 2573bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach DAG.getExternalSymbol("__sync_synchronize", 2574bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach TLI.getPointerTy()), 2575bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach Args, DAG, dl); 2576bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach Results.push_back(CallResult.second); 2577bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach break; 2578bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach } 2579b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach // By default, atomic intrinsics are marked Legal and lowered. Targets 2580b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach // which don't support them directly, however, may want libcalls, in which 2581b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach // case they mark them Expand, and we get here. 2582b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach // FIXME: Unimplemented for now. Add libcalls. 2583b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_SWAP: 2584b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_ADD: 2585b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_SUB: 2586b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_AND: 2587b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_OR: 2588b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_XOR: 2589b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_NAND: 2590b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_MIN: 2591b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_MAX: 2592b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_UMIN: 2593b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_UMAX: 2594a845706dc1cebfe75913832e07ef114519a879d6Evan Cheng case ISD::ATOMIC_CMP_SWAP: { 2595e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach std::pair<SDValue, SDValue> Tmp = ExpandAtomic(Node); 2596e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Results.push_back(Tmp.first); 2597e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Results.push_back(Tmp.second); 259859c38f31acf87901208bbf790508196b1c0ad1fdJim Grosbach break; 2599a845706dc1cebfe75913832e07ef114519a879d6Evan Cheng } 26004bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::DYNAMIC_STACKALLOC: 26014bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ExpandDYNAMIC_STACKALLOC(Node, Results); 26024bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 26038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 26048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0; i < Node->getNumValues(); i++) 26058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(i)); 26068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 26078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UNDEF: { 2608e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 26098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (VT.isInteger()) 26108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, VT)); 261135a389344d21178ee280c2410401b2060b5b879cChris Lattner else { 261235a389344d21178ee280c2410401b2060b5b879cChris Lattner assert(VT.isFloatingPoint() && "Unknown value type!"); 26138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstantFP(0, VT)); 261435a389344d21178ee280c2410401b2060b5b879cChris Lattner } 26158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 26168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 26178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAP: { 26188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // If this operation is not supported, lower it to 'abort()' call 26198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::ArgListTy Args; 26208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman std::pair<SDValue, SDValue> CallResult = 26211d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson TLI.LowerCallTo(Node->getOperand(0), Type::getVoidTy(*DAG.getContext()), 26223d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng false, false, false, false, 0, CallingConv::C, 26233d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng /*isTailCall=*/false, 262498ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 26258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getExternalSymbol("abort", TLI.getPointerTy()), 262646ada19645c981a0b7932487d163f7582074a4d9Bill Wendling Args, DAG, dl); 26278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(CallResult.second); 26288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 26298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 26308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND: 2631bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck case ISD::BITCAST: 26328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), Node->getValueType(0), 26338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 26348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 26358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 26368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_EXTEND: 26378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), 26388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType(), 26398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 26408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 26418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 26428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 26438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: we could fall back on load/store here too for targets without 26448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // SAR. However, it is doubtful that any exist. 2645e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 264687862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman EVT VT = Node->getValueType(0); 264787862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman EVT ShiftAmountTy = TLI.getShiftAmountTy(); 2648d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman if (VT.isVector()) 264987862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman ShiftAmountTy = VT; 2650d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman unsigned BitsDiff = VT.getScalarType().getSizeInBits() - 2651d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman ExtraVT.getScalarType().getSizeInBits(); 265287862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman SDValue ShiftCst = DAG.getConstant(BitsDiff, ShiftAmountTy); 26538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SHL, dl, Node->getValueType(0), 26548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), ShiftCst); 2655775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SRA, dl, Node->getValueType(0), Tmp1, ShiftCst); 2656775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 26578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 26588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 26598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: { 26608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // The only way we can lower this is to turn it into a TRUNCSTORE, 26618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // EXTLOAD pair, targetting a temporary location (a stack slot). 26628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 26638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: there is a choice here between constantly creating new stack 26648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // slots and always reusing the same one. We currently always create 26658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // new ones, as reuse may inhibit scheduling. 2666e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 26678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), ExtraVT, 26688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 26698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 26708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 26718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 26728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 26738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 26748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandLegalINT_TO_FP(Node->getOpcode() == ISD::SINT_TO_FP, 26758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), Node->getValueType(0), dl); 26768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 26778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 26788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: { 26798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SDValue True, False; 2680e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getOperand(0).getValueType(); 2681e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = Node->getValueType(0); 26828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const uint64_t zero[] = {0, 0}; 26838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APFloat apf = APFloat(APInt(VT.getSizeInBits(), 2, zero)); 26848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APInt x = APInt::getSignBit(NVT.getSizeInBits()); 26858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman (void)apf.convertFromAPInt(x, false, APFloat::rmNearestTiesToEven); 26868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getConstantFP(apf, VT); 26878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), 26888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), 26898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, ISD::SETLT); 26908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman True = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, Node->getOperand(0)); 2691775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling False = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, 2692775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getNode(ISD::FSUB, dl, VT, 2693775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(0), Tmp1)); 26948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman False = DAG.getNode(ISD::XOR, dl, NVT, False, 26958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(x, NVT)); 26968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, True, False); 26978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 26988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 26998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 2700509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VAARG: { 2701509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman const Value *V = cast<SrcValueSDNode>(Node->getOperand(2))->getValue(); 2702e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2703509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2704509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 270572d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola unsigned Align = Node->getConstantOperandVal(3); 270672d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola 2707ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue VAListLoad = DAG.getLoad(TLI.getPointerTy(), dl, Tmp1, Tmp2, 2708ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(V), false, false, 0); 270972d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola SDValue VAList = VAListLoad; 271072d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola 2711cbeeae23c31d32b833c9c7c3e8984e4cbcf22f45Rafael Espindola if (Align > TLI.getMinStackArgumentAlignment()) { 2712cbeeae23c31d32b833c9c7c3e8984e4cbcf22f45Rafael Espindola assert(((Align & (Align-1)) == 0) && "Expected Align to be a power of 2"); 2713cbeeae23c31d32b833c9c7c3e8984e4cbcf22f45Rafael Espindola 271472d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola VAList = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList, 271572d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola DAG.getConstant(Align - 1, 271672d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola TLI.getPointerTy())); 271772d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola 271872d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola VAList = DAG.getNode(ISD::AND, dl, TLI.getPointerTy(), VAList, 271907e3a38c78d2788e05d716e7fa552b9449c87c33Chris Lattner DAG.getConstant(-(int64_t)Align, 272072d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola TLI.getPointerTy())); 272172d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola } 272272d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola 2723509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Increment the pointer, VAList, to the next vaarg 2724509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList, 2725509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(TLI.getTargetData()-> 2726adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng getTypeAllocSize(VT.getTypeForEVT(*DAG.getContext())), 2727509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TLI.getPointerTy())); 2728509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Store the incremented VAList to the legalized pointer 27296229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner Tmp3 = DAG.getStore(VAListLoad.getValue(1), dl, Tmp3, Tmp2, 27306229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner MachinePointerInfo(V), false, false, 0); 2731509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Load the actual argument out of the pointer VAList 2732ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Results.push_back(DAG.getLoad(VT, dl, Tmp3, VAList, MachinePointerInfo(), 27331e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0)); 2734509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Results[0].getValue(1)); 2735509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2736509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 27378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VACOPY: { 27388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This defaults to loading a pointer from the input and storing it to the 27398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // output, returning the chain. 27408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VD = cast<SrcValueSDNode>(Node->getOperand(3))->getValue(); 27418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VS = cast<SrcValueSDNode>(Node->getOperand(4))->getValue(); 27428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getLoad(TLI.getPointerTy(), dl, Node->getOperand(0), 2743ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Node->getOperand(2), MachinePointerInfo(VS), 2744ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, 0); 2745ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Tmp1 = DAG.getStore(Tmp1.getValue(1), dl, Tmp1, Node->getOperand(1), 2746ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(VD), false, false, 0); 2747775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 27488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 27498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 27508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 27518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOperand(0).getValueType().getVectorNumElements() == 1) 27528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This must be an access of the only element. Return it. 2753bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp1 = DAG.getNode(ISD::BITCAST, dl, Node->getValueType(0), 27548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 27558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 27568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandExtractFromVectorThroughStack(SDValue(Node, 0)); 27578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 27588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 27598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_SUBVECTOR: 2760775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandExtractFromVectorThroughStack(SDValue(Node, 0))); 27618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 2762509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::CONCAT_VECTORS: { 2763775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandVectorBuildThroughStack(Node)); 2764509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2765509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 27668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SCALAR_TO_VECTOR: 2767775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandSCALAR_TO_VECTOR(Node)); 27688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 27693f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INSERT_VECTOR_ELT: 2770775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandINSERT_VECTOR_ELT(Node->getOperand(0), 2771775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1), 2772775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(2), dl)); 27733f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 2774509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 2775509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 2776509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 2777509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 2778e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2779e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 278014b2141497a913a2d5b508a0174ba09cac61e0bfBob Wilson if (getTypeAction(EltVT) == Promote) 278114b2141497a913a2d5b508a0174ba09cac61e0bfBob Wilson EltVT = TLI.getTypeToTransformTo(*DAG.getContext(), EltVT); 2782509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned NumElems = VT.getVectorNumElements(); 2783509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<SDValue, 8> Ops; 2784509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman for (unsigned i = 0; i != NumElems; ++i) { 2785509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Mask[i] < 0) { 2786509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getUNDEF(EltVT)); 2787509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman continue; 2788509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2789509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned Idx = Mask[i]; 2790509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Idx < NumElems) 2791775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2792775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(0), 2793775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getIntPtrConstant(Idx))); 2794509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 2795775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2796775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1), 2797775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getIntPtrConstant(Idx - NumElems))); 2798509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2799509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &Ops[0], Ops.size()); 2800509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 2801509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2802509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 28038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: { 2804e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpTy = Node->getOperand(0).getValueType(); 28058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (cast<ConstantSDNode>(Node->getOperand(1))->getZExtValue()) { 28068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 1 -> Hi 28078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRL, dl, OpTy, Node->getOperand(0), 28088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OpTy.getSizeInBits()/2, 28098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TLI.getShiftAmountTy())); 28108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), Tmp1); 28118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 28128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 0 -> Lo 28138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), 28148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 28158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 28168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 28178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 28188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 28193f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKSAVE: 28203f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // Expand to CopyFromReg if the target set 28213f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // StackPointerRegisterToSaveRestore. 28223f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 2823775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, SP, 2824775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 28253f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Results[0].getValue(1)); 28263f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } else { 2827775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getUNDEF(Node->getValueType(0))); 28283f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Node->getOperand(0)); 28293f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 28303f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 28313f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKRESTORE: 2832775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // Expand to CopyToReg if the target set 2833775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // StackPointerRegisterToSaveRestore. 2834775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 2835775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyToReg(Node->getOperand(0), dl, SP, 2836775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1))); 2837775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 2838775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Node->getOperand(0)); 2839775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 28403f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 28414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::FCOPYSIGN: 2842775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFCOPYSIGN(Node)); 28434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 2844f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEG: 2845f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FNEG(X) -> Y = SUB -0.0, X 2846f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getConstantFP(-0.0, Node->getValueType(0)); 2847f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(ISD::FSUB, dl, Node->getValueType(0), Tmp1, 2848f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Node->getOperand(0)); 2849f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2850f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2851f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FABS: { 2852f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FABS(X) -> Y = (X >u 0.0) ? X : fneg(X). 2853e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2854f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = Node->getOperand(0); 2855f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp2 = DAG.getConstantFP(0.0, VT); 2856775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(Tmp1.getValueType()), 2857f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1, Tmp2, ISD::SETUGT); 2858775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp3 = DAG.getNode(ISD::FNEG, dl, VT, Tmp1); 2859775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SELECT, dl, VT, Tmp2, Tmp1, Tmp3); 2860f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2861f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2862f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 2863f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSQRT: 2864775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::SQRT_F32, RTLIB::SQRT_F64, 2865775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::SQRT_F80, RTLIB::SQRT_PPCF128)); 2866f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2867f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSIN: 2868775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::SIN_F32, RTLIB::SIN_F64, 2869775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::SIN_F80, RTLIB::SIN_PPCF128)); 2870f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2871f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCOS: 2872775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::COS_F32, RTLIB::COS_F64, 2873775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::COS_F80, RTLIB::COS_PPCF128)); 2874f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2875f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG: 2876775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG_F32, RTLIB::LOG_F64, 2877775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG_F80, RTLIB::LOG_PPCF128)); 2878f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2879f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG2: 2880775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG2_F32, RTLIB::LOG2_F64, 2881775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG2_F80, RTLIB::LOG2_PPCF128)); 2882f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2883f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG10: 2884775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG10_F32, RTLIB::LOG10_F64, 2885775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG10_F80, RTLIB::LOG10_PPCF128)); 2886f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2887f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP: 2888775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP_F32, RTLIB::EXP_F64, 2889775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::EXP_F80, RTLIB::EXP_PPCF128)); 2890f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2891f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP2: 2892775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP2_F32, RTLIB::EXP2_F64, 2893775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::EXP2_F80, RTLIB::EXP2_PPCF128)); 2894f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2895f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FTRUNC: 2896775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::TRUNC_F32, RTLIB::TRUNC_F64, 2897775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::TRUNC_F80, RTLIB::TRUNC_PPCF128)); 2898f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2899f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FFLOOR: 2900775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::FLOOR_F32, RTLIB::FLOOR_F64, 2901775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::FLOOR_F80, RTLIB::FLOOR_PPCF128)); 2902f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2903f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCEIL: 2904775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::CEIL_F32, RTLIB::CEIL_F64, 2905775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::CEIL_F80, RTLIB::CEIL_PPCF128)); 2906f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2907f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FRINT: 2908775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::RINT_F32, RTLIB::RINT_F64, 2909775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::RINT_F80, RTLIB::RINT_PPCF128)); 2910f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2911f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEARBYINT: 2912775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::NEARBYINT_F32, 2913775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_F64, 2914775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_F80, 2915775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_PPCF128)); 2916f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2917f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOWI: 2918775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::POWI_F32, RTLIB::POWI_F64, 2919775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::POWI_F80, RTLIB::POWI_PPCF128)); 2920f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2921f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOW: 2922775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::POW_F32, RTLIB::POW_F64, 2923775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::POW_F80, RTLIB::POW_PPCF128)); 2924f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2925f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FDIV: 2926775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::DIV_F32, RTLIB::DIV_F64, 2927775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::DIV_F80, RTLIB::DIV_PPCF128)); 2928f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2929f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FREM: 2930775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::REM_F32, RTLIB::REM_F64, 2931775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::REM_F80, RTLIB::REM_PPCF128)); 2932f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2933927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov case ISD::FP16_TO_FP32: 2934927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov Results.push_back(ExpandLibCall(RTLIB::FPEXT_F16_F32, Node, false)); 2935927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov break; 2936927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov case ISD::FP32_TO_FP16: 2937927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov Results.push_back(ExpandLibCall(RTLIB::FPROUND_F32_F16, Node, false)); 2938927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov break; 2939f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::ConstantFP: { 2940f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman ConstantFPSDNode *CFP = cast<ConstantFPSDNode>(Node); 2941775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // Check to see if this FP immediate is already legal. 2942775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // If this is a legal constant, turn it into a TargetConstantFP node. 2943a1eaa3c52b75d4fe2bcd4f7c52e56c405ee91d3cEvan Cheng if (TLI.isFPImmLegal(CFP->getValueAPF(), Node->getValueType(0))) 2944775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(SDValue(Node, 0)); 2945f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 2946775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandConstantFP(CFP, true, DAG, TLI)); 2947f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2948f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 294926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EHSELECTION: { 295026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionSelectorRegister(); 295126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 2952775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(1), dl, Reg, 2953775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 295426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 295526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 295626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 295726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EXCEPTIONADDR: { 295826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionAddressRegister(); 295926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 2960775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, Reg, 2961775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 296226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 296326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 296426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 296526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::SUB: { 2966e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 296726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ISD::ADD, VT) && 296826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman TLI.isOperationLegalOrCustom(ISD::XOR, VT) && 296926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "Don't know how to expand this subtraction!"); 297026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ISD::XOR, dl, VT, Node->getOperand(1), 297126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman DAG.getConstant(APInt::getAllOnesValue(VT.getSizeInBits()), VT)); 2972775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::ADD, dl, VT, Tmp2, DAG.getConstant(1, VT)); 2973775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::ADD, dl, VT, Node->getOperand(0), Tmp1)); 297426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 297526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 2976f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UREM: 2977f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SREM: { 2978e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 297926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 2980f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SREM; 2981f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivOpc = isSigned ? ISD::SDIV : ISD::UDIV; 2982f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 2983f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(0); 2984f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp3 = Node->getOperand(1); 29853be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) { 29863be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Tmp2, Tmp3).getValue(1); 29873be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } else if (TLI.isOperationLegalOrCustom(DivOpc, VT)) { 2988f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // X % Y -> X-X/Y*Y 2989f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivOpc, dl, VT, Tmp2, Tmp3); 2990f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, VT, Tmp1, Tmp3); 2991f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, Tmp2, Tmp1); 2992f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else if (isSigned) { 29938983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, true, 29948983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SREM_I8, 29958983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SREM_I16, RTLIB::SREM_I32, 2996f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::SREM_I64, RTLIB::SREM_I128); 2997f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else { 29988983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, false, 29998983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UREM_I8, 30008983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UREM_I16, RTLIB::UREM_I32, 300126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::UREM_I64, RTLIB::UREM_I128); 3002f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 300326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 300426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 300526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 3006f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UDIV: 3007f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SDIV: { 3008f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SDIV; 3009f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 3010e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 301126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 3012f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) 3013f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Node->getOperand(0), 3014f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(1)); 3015f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else if (isSigned) 30168983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, true, 30178983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SDIV_I8, 30188983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SDIV_I16, RTLIB::SDIV_I32, 301926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::SDIV_I64, RTLIB::SDIV_I128); 3020f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 30218983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, false, 30228983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UDIV_I8, 30238983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UDIV_I16, RTLIB::UDIV_I32, 3024f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::UDIV_I64, RTLIB::UDIV_I128); 302526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 302626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 302726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 302826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHU: 302926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHS: { 303026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned ExpandOpcode = Node->getOpcode() == ISD::MULHU ? ISD::UMUL_LOHI : 303126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman ISD::SMUL_LOHI; 3032e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 303326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 303426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ExpandOpcode, VT) && 303526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "If this wasn't legal, it shouldn't have been created!"); 303626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ExpandOpcode, dl, VTs, Node->getOperand(0), 303726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getOperand(1)); 303826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1.getValue(1)); 303926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 304026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 304126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MUL: { 3042e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 304326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 304426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // See if multiply or divide can be lowered using two-result operations. 304526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // We just need the low half of the multiply; try both the signed 304626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // and unsigned forms. If the target supports both SMUL_LOHI and 304726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // UMUL_LOHI, form a preference by checking which forms of plain 304826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // MULH it supports. 304926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasSMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::SMUL_LOHI, VT); 305026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasUMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::UMUL_LOHI, VT); 305126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHS = TLI.isOperationLegalOrCustom(ISD::MULHS, VT); 305226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHU = TLI.isOperationLegalOrCustom(ISD::MULHU, VT); 305326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned OpToUse = 0; 305426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (HasSMUL_LOHI && !HasMULHS) { 305526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 305626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI && !HasMULHU) { 305726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 305826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasSMUL_LOHI) { 305926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 306026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI) { 306126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 306226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 306326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (OpToUse) { 3064775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(OpToUse, dl, VTs, Node->getOperand(0), 3065775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1))); 306626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 306726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 30688983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, false, 30698983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::MUL_I8, 30708983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::MUL_I16, RTLIB::MUL_I32, 307126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::MUL_I64, RTLIB::MUL_I128); 307226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 307326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 307426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 30754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SADDO: 30764bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SSUBO: { 30774bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 30784bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 30794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::SADDO ? 30804bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 30814bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 30824bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 3083122d06de7482dcb39e7dbcbfe302e39cc55627e5Bill Wendling EVT OType = Node->getValueType(1); 3084775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling 30854bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Zero = DAG.getConstant(0, LHS.getValueType()); 30864bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 30874bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // LHSSign -> LHS >= 0 30884bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RHSSign -> RHS >= 0 30894bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // SumSign -> Sum >= 0 30904bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 30914bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Add: 30924bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign == RHSSign) && (LHSSign != SumSign) 30934bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Sub: 30944bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign != RHSSign) && (LHSSign != SumSign) 30954bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 30964bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHSSign = DAG.getSetCC(dl, OType, LHS, Zero, ISD::SETGE); 30974bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHSSign = DAG.getSetCC(dl, OType, RHS, Zero, ISD::SETGE); 30984bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignsMatch = DAG.getSetCC(dl, OType, LHSSign, RHSSign, 30994bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Node->getOpcode() == ISD::SADDO ? 31004bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETEQ : ISD::SETNE); 31014bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 31024bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSign = DAG.getSetCC(dl, OType, Sum, Zero, ISD::SETGE); 31034bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSignNE = DAG.getSetCC(dl, OType, LHSSign, SumSign, ISD::SETNE); 31044bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 31054bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Cmp = DAG.getNode(ISD::AND, dl, OType, SignsMatch, SumSignNE); 31064bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Cmp); 31074bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 31084bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 31094bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::UADDO: 31104bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::USUBO: { 31114bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 31124bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 31134bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::UADDO ? 31144bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 31154bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 31164bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 3117775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getSetCC(dl, Node->getValueType(1), Sum, LHS, 3118775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOpcode () == ISD::UADDO ? 3119775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling ISD::SETULT : ISD::SETUGT)); 31204bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 31214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 3122db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::UMULO: 3123db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::SMULO: { 3124e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 3125db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue LHS = Node->getOperand(0); 3126db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue RHS = Node->getOperand(1); 3127db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue BottomHalf; 3128db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue TopHalf; 3129ec9d8b00470b2ddabef4e1b58b4f60d69995d8ceNuno Lopes static const unsigned Ops[2][3] = 3130db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { { ISD::MULHU, ISD::UMUL_LOHI, ISD::ZERO_EXTEND }, 3131db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { ISD::MULHS, ISD::SMUL_LOHI, ISD::SIGN_EXTEND }}; 3132db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman bool isSigned = Node->getOpcode() == ISD::SMULO; 3133db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (TLI.isOperationLegalOrCustom(Ops[isSigned][0], VT)) { 3134db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::MUL, dl, VT, LHS, RHS); 3135db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(Ops[isSigned][0], dl, VT, LHS, RHS); 3136db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else if (TLI.isOperationLegalOrCustom(Ops[isSigned][1], VT)) { 3137db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(Ops[isSigned][1], dl, DAG.getVTList(VT, VT), LHS, 3138db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS); 3139db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = BottomHalf.getValue(1); 314035a389344d21178ee280c2410401b2060b5b879cChris Lattner } else { 314135a389344d21178ee280c2410401b2060b5b879cChris Lattner // FIXME: We should be able to fall back to a libcall with an illegal 314235a389344d21178ee280c2410401b2060b5b879cChris Lattner // type in some cases. 314335a389344d21178ee280c2410401b2060b5b879cChris Lattner // Also, we can fall back to a division in some cases, but that's a big 314435a389344d21178ee280c2410401b2060b5b879cChris Lattner // performance hit in the general case. 314535a389344d21178ee280c2410401b2060b5b879cChris Lattner assert(TLI.isTypeLegal(EVT::getIntegerVT(*DAG.getContext(), 314635a389344d21178ee280c2410401b2060b5b879cChris Lattner VT.getSizeInBits() * 2)) && 314735a389344d21178ee280c2410401b2060b5b879cChris Lattner "Don't know how to expand this operation yet!"); 314823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT WideVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits() * 2); 3149db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman LHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, LHS); 3150db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, RHS); 3151db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, WideVT, LHS, RHS); 3152db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 3153db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(0)); 3154db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 3155db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(1)); 3156db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 3157db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (isSigned) { 3158db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getConstant(VT.getSizeInBits() - 1, TLI.getShiftAmountTy()); 3159db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::SRA, dl, VT, BottomHalf, Tmp1); 3160db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, Tmp1, 3161db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman ISD::SETNE); 3162db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else { 3163db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, 3164db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getConstant(0, VT), ISD::SETNE); 3165db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 3166db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(BottomHalf); 3167db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(TopHalf); 3168db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman break; 3169db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 3170f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BUILD_PAIR: { 3171e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PairTy = Node->getValueType(0); 3172f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, PairTy, Node->getOperand(0)); 3173f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = DAG.getNode(ISD::ANY_EXTEND, dl, PairTy, Node->getOperand(1)); 3174775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2 = DAG.getNode(ISD::SHL, dl, PairTy, Tmp2, 3175f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(PairTy.getSizeInBits()/2, 3176f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman TLI.getShiftAmountTy())); 3177775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::OR, dl, PairTy, Tmp1, Tmp2)); 3178f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 3179f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 3180509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::SELECT: 3181509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 3182509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 3183509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = Node->getOperand(2); 3184775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (Tmp1.getOpcode() == ISD::SETCC) { 3185509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1.getOperand(0), Tmp1.getOperand(1), 3186509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, 3187509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<CondCodeSDNode>(Tmp1.getOperand(2))->get()); 3188775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 3189509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1, 3190509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(0, Tmp1.getValueType()), 3191509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, ISD::SETNE); 3192775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 3193509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3194509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 31954bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::BR_JT: { 31964bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Node->getOperand(0); 31974bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Table = Node->getOperand(1); 31984bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Index = Node->getOperand(2); 31994bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 3200e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PTy = TLI.getPointerTy(); 3201071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner 3202071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner const TargetData &TD = *TLI.getTargetData(); 3203071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner unsigned EntrySize = 3204071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner DAG.getMachineFunction().getJumpTableInfo()->getEntrySize(TD); 32056e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach 3206071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner Index = DAG.getNode(ISD::MUL, dl, PTy, 32074bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Index, DAG.getConstant(EntrySize, PTy)); 32084bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Addr = DAG.getNode(ISD::ADD, dl, PTy, Index, Table); 32094bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 321023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), EntrySize * 8); 3211bcc8017c738e92d9c1af221b11c4916cb524184eEvan Cheng SDValue LD = DAG.getExtLoad(ISD::SEXTLOAD, PTy, dl, Chain, Addr, 321285ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getJumpTable(), MemVT, 32131e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 32144bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = LD; 321555e59c186303ff02c0be7429da3b1b36c347f164Dan Gohman if (TM.getRelocationModel() == Reloc::PIC_) { 32164bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // For PIC, the sequence is: 3217775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // BRIND(load(Jumptable + index) + RelocBase) 32184bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RelocBase can be JumpTable, GOT or some sort of global base. 32194bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = DAG.getNode(ISD::ADD, dl, PTy, Addr, 32204bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getPICJumpTableRelocBase(Table, DAG)); 32214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 3222825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BRIND, dl, MVT::Other, LD.getValue(1), Addr); 32234bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 32244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 32254bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 3226f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BRCOND: 3227f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Expand brcond's setcc into its constituent parts and create a BR_CC 3228f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Node. 3229f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = Node->getOperand(0); 3230f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(1); 3231775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (Tmp2.getOpcode() == ISD::SETCC) { 3232825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, 3233f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1, Tmp2.getOperand(2), 3234f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2.getOperand(0), Tmp2.getOperand(1), 3235f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 3236775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 3237825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, Tmp1, 3238f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getCondCode(ISD::SETNE), Tmp2, 3239f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(0, Tmp2.getValueType()), 3240f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 3241775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 3242f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(Tmp1); 3243f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 3244ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 3245ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = Node->getOperand(0); 3246ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp2 = Node->getOperand(1); 3247ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp3 = Node->getOperand(2); 3248775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling LegalizeSetCCCondCode(Node->getValueType(0), Tmp1, Tmp2, Tmp3, dl); 3249ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 3250ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // If we expanded the SETCC into an AND/OR, return the new node 3251ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman if (Tmp2.getNode() == 0) { 3252ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 3253ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3254ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 3255ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 3256ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // Otherwise, SETCC for the given comparison type must be completely 3257ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // illegal; expand it into a SELECT_CC. 3258e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 3259ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, VT, Tmp1, Tmp2, 3260ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman DAG.getConstant(1, VT), DAG.getConstant(0, VT), Tmp3); 3261ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 3262ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3263ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 3264bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::SELECT_CC: { 3265bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // LHS 3266bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(1); // RHS 3267bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(2); // True 3268bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(3); // False 3269bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue CC = Node->getOperand(4); 3270bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3271bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp1.getValueType()), 3272775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1, Tmp2, CC, dl); 3273bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3274bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp2.getNode() && "Can't legalize SELECT_CC with legal condition!"); 3275bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = DAG.getConstant(0, Tmp1.getValueType()); 3276bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman CC = DAG.getCondCode(ISD::SETNE); 3277bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, Node->getValueType(0), Tmp1, Tmp2, 3278bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Tmp4, CC); 3279bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 3280bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 3281bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 3282bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::BR_CC: { 3283bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // Chain 3284bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(2); // LHS 3285bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(3); // RHS 3286bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(1); // CC 3287bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3288bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp2.getValueType()), 3289775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2, Tmp3, Tmp4, dl); 3290bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 3291bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3292bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp3.getNode() && "Can't legalize BR_CC with legal condition!"); 3293bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = DAG.getConstant(0, Tmp2.getValueType()); 3294bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = DAG.getCondCode(ISD::SETNE); 3295bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::BR_CC, dl, Node->getValueType(0), Tmp1, Tmp4, Tmp2, 3296bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Node->getOperand(4)); 3297bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 3298bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 3299bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 33003f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GLOBAL_OFFSET_TABLE: 33013f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalAddress: 33023f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalTLSAddress: 33033f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ExternalSymbol: 33043f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ConstantPool: 33053f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::JumpTable: 33063f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_W_CHAIN: 33073f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_WO_CHAIN: 33083f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_VOID: 33093f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // FIXME: Custom lowering for these operations shouldn't return null! 33103f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 33113f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(SDValue(Node, i)); 33123f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 33138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 33148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 33158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::PromoteNode(SDNode *Node, 33168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 3317e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OVT = Node->getValueType(0); 33188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::UINT_TO_FP || 3319a64eb92fe305424ebde2e3de2b12160b8bf76047Eli Friedman Node->getOpcode() == ISD::SINT_TO_FP || 3320775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOpcode() == ISD::SETCC) { 33218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT = Node->getOperand(0).getValueType(); 3322775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 3323e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), OVT); 33248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 3325509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SDValue Tmp1, Tmp2, Tmp3; 33268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 33278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 33288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 33298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 33308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Zero extend the argument. 33318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0)); 33328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Perform the larger operation. 33339a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1); 33348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::CTTZ) { 33358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman //if Tmp1 == sizeinbits(NVT) then Tmp1 = sizeinbits(Old VT) 33369a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), 33378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, DAG.getConstant(NVT.getSizeInBits(), NVT), 33388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ISD::SETEQ); 33398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, 33408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OVT.getSizeInBits(), NVT), Tmp1); 33418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else if (Node->getOpcode() == ISD::CTLZ) { 33428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Tmp1 = Tmp1 - (sizeinbits(NVT) - sizeinbits(Old VT)) 33438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, NVT, Tmp1, 33448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(NVT.getSizeInBits() - 33458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT.getSizeInBits(), NVT)); 33468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 3347775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::TRUNCATE, dl, OVT, Tmp1)); 33488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 33498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: { 33508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman unsigned DiffBits = NVT.getSizeInBits() - OVT.getSizeInBits(); 3351167bea71a4bd19329a218f5e1bd8facfd90a0cf9Bill Wendling Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0)); 3352775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::BSWAP, dl, NVT, Tmp1); 3353775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SRL, dl, NVT, Tmp1, 3354775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getConstant(DiffBits, TLI.getShiftAmountTy())); 3355775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 33568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 33578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 33588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: 33598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_SINT: 33608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalFP_TO_INT(Node->getOperand(0), Node->getValueType(0), 33618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::FP_TO_SINT, dl); 33628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 33638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 33648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 33658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 33668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalINT_TO_FP(Node->getOperand(0), Node->getValueType(0), 33678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::SINT_TO_FP, dl); 33688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 33698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 3370f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::AND: 3371f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::OR: 3372c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::XOR: { 3373c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen unsigned ExtOp, TruncOp; 3374c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen if (OVT.isVector()) { 3375bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck ExtOp = ISD::BITCAST; 3376bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck TruncOp = ISD::BITCAST; 337735a389344d21178ee280c2410401b2060b5b879cChris Lattner } else { 337835a389344d21178ee280c2410401b2060b5b879cChris Lattner assert(OVT.isInteger() && "Cannot promote logic operation"); 3379c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen ExtOp = ISD::ANY_EXTEND; 3380c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen TruncOp = ISD::TRUNCATE; 3381c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3382c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Promote each of the values to the new type. 3383c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 3384c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3385c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Perform the larger operation, then convert back 3386775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1, Tmp2); 3387775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(TruncOp, dl, OVT, Tmp1)); 3388f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3389c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3390c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::SELECT: { 3391509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned ExtOp, TruncOp; 33924bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Node->getValueType(0).isVector()) { 3393bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck ExtOp = ISD::BITCAST; 3394bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck TruncOp = ISD::BITCAST; 33954bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else if (Node->getValueType(0).isInteger()) { 3396509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::ANY_EXTEND; 3397509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::TRUNCATE; 3398509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } else { 3399509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::FP_EXTEND; 3400509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::FP_ROUND; 3401509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3402509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 3403509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Promote each of the values to the new type. 3404509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3405509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(2)); 3406509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Perform the larger operation, then round down. 3407509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp1, Tmp2, Tmp3); 3408509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (TruncOp != ISD::FP_ROUND) 3409775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1); 3410509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 3411775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1, 3412509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(0)); 3413775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 3414509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3415c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3416509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 3417509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 3418509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 3419509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3420509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Cast the two input vectors. 3421bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp1 = DAG.getNode(ISD::BITCAST, dl, NVT, Node->getOperand(0)); 3422bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp2 = DAG.getNode(ISD::BITCAST, dl, NVT, Node->getOperand(1)); 3423509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3424509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Convert the shuffle mask to the right # elements. 3425775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = ShuffleWithNarrowerEltType(NVT, OVT, dl, Tmp1, Tmp2, Mask); 3426bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp1 = DAG.getNode(ISD::BITCAST, dl, OVT, Tmp1); 3427509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3428509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3429509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3430ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 343178d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen unsigned ExtOp = ISD::FP_EXTEND; 343278d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen if (NVT.isInteger()) { 343378d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ISD::CondCode CCCode = 343478d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen cast<CondCodeSDNode>(Node->getOperand(2))->get(); 343578d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ExtOp = isSignedIntSetCC(CCCode) ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND; 3436ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 343778d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 343878d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3439ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(DAG.getNode(ISD::SETCC, dl, Node->getValueType(0), 3440ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1, Tmp2, Node->getOperand(2))); 3441ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3442ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 34438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 34448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 34458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 34463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// SelectionDAG::Legalize - This is the entry point for the file. 34473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 3448714efc63d4319b771d89a95aa7a42d400f03d8c9Dan Gohmanvoid SelectionDAG::Legalize(CodeGenOpt::Level OptLevel) { 34493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// run - This is the main entry point to this class. 34503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 34511fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(*this, OptLevel).LegalizeDAG(); 34523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 34533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 3454