LegalizeDAG.cpp revision fc52163a45b9ea147db1c20a1db3edff0f0bf652
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" 2216c29b5f285f375be53dabaa73e3e91107485fe4Anton Korobeynikov#include "llvm/Target/TargetFrameLowering.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 64fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings /// LastCALLSEQ - 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. 67fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings SmallVector<SDValue, 8> LastCALLSEQ; 68fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 69fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings // Track CALLSEQ_BEGIN/CALLSEQ_END nesting. 70fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings int depthCALLSEQ; 711809d5fa216bbdc505502468b7bd85629e1e44bcStuart Hastings 723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner enum LegalizeAction { 7368a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Legal, // The target natively supports this operation. 7468a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Promote, // This operation should be executed in a larger type. 75d74ea2bbd8bb630331f35ead42d385249bd42af8Chris Lattner Expand // Try to expand this to other ops, otherwise use a libcall. 763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner }; 77fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// ValueTypeActions - This is a bitvector that contains two bits for each 793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// value type, where the two bits correspond to the LegalizeAction enum. 803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// This can be queried with "getTypeAction(VT)". 8168a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner TargetLowering::ValueTypeActionImpl ValueTypeActions; 823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// LegalizedNodes - For nodes that are of legal width, and that have more 843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// than one use, this map indicates what regularized operand to use. This 853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// allows us to avoid legalizing the same thing more than once. 86475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue> LegalizedNodes; 873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 88475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void AddLegalizedOperand(SDValue From, SDValue To) { 8969a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(From, To)); 9069a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner // If someone requests legalization of the new node, return itself. 9169a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner if (From != To) 9269a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(To, To)); 9395771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson 94a778f5c798fc78ca15f813c362cdcdcc1eb86266Devang Patel // Transfer SDDbgValues. 95a778f5c798fc78ca15f813c362cdcdcc1eb86266Devang Patel DAG.TransferDbgValues(From, To); 968afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner } 978afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner 983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerpublic: 991fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(SelectionDAG &DAG, CodeGenOpt::Level ol); 1003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// getTypeAction - Return how we should legalize values of this type, either 1023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// it is already legal or we need to expand it into multiple registers of 1033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// smaller integer type, or we need to promote it to a larger type. 104e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson LegalizeAction getTypeAction(EVT VT) const { 105aafe626c7fa9f99150cccd27d0151a2cf7c8c00bChris Lattner return (LegalizeAction)ValueTypeActions.getTypeAction(VT); 1063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// isTypeLegal - Return true if this type is legal on this target. 1093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 110e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson bool isTypeLegal(EVT VT) const { 1113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return getTypeAction(VT) == Legal; 1123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner void LegalizeDAG(); 1153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 116456a93afcec7740c45cafa8354317f7b17987a6dChris Lattnerprivate: 117c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// LegalizeOp - We know that the specified value has a legal type. 118c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// Recursively ensure that the operands have legal types, then return the 119c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// result. 120475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LegalizeOp(SDValue O); 121fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1227ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue OptimizeFloatStore(StoreSDNode *ST); 1237ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 1246867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// PerformInsertVectorEltInMemory - Some target cannot handle a variable 1256867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 1266867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// is necessary to spill the vector being inserted into to memory, perform 1276867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// the insert there, and then read the result back. 128475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue PerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, 1293f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 1303f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, 1313f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 132826695281344e3a4c4d44d73dd155107aafd689bDan Gohman 1335a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1345a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// performs the same shuffe in terms of order or result bytes, but on a type 1355a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// whose vector element type is narrower than the original shuffle type. 1365a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 137e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl, 1386e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach SDValue N1, SDValue N2, 1395a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SmallVectorImpl<int> &Mask) const; 140fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 141c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner bool LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 14200755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo); 1436831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 144e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson void LegalizeSetCCCondCode(EVT VT, SDValue &LHS, SDValue &RHS, SDValue &CC, 145775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DebugLoc dl); 146fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 14747b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman SDValue ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, bool isSigned); 148e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach std::pair<SDValue, SDValue> ExpandChainLibCall(RTLIB::Libcall LC, 149e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach SDNode *Node, bool isSigned); 150f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman SDValue ExpandFPLibCall(SDNode *Node, RTLIB::Libcall Call_F32, 151f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, RTLIB::Libcall Call_F80, 152f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128); 1538983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov SDValue ExpandIntLibCall(SDNode *Node, bool isSigned, 1548983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I8, 1558983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I16, 1568983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I32, 1578983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I64, 158f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128); 15965279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng void ExpandDivRemLibCall(SDNode *Node, SmallVectorImpl<SDValue> &Results); 160475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 161e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue EmitStackConvert(SDValue SrcOp, EVT SlotVT, EVT DestVT, DebugLoc dl); 162475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandBUILD_VECTOR(SDNode *Node); 163475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandSCALAR_TO_VECTOR(SDNode *Node); 1644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman void ExpandDYNAMIC_STACKALLOC(SDNode *Node, 1654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results); 1664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue ExpandFCOPYSIGN(SDNode *Node); 167e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue ExpandLegalINT_TO_FP(bool isSigned, SDValue LegalOp, EVT DestVT, 168af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 169e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue PromoteLegalINT_TO_FP(SDValue LegalOp, EVT DestVT, bool isSigned, 170af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 171e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue PromoteLegalFP_TO_INT(SDValue LegalOp, EVT DestVT, bool isSigned, 172af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 173475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1748a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBSWAP(SDValue Op, DebugLoc dl); 1758a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBitCount(unsigned Opc, SDValue Op, DebugLoc dl); 176475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1773d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue ExpandExtractFromVectorThroughStack(SDValue Op); 178cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene SDValue ExpandInsertToVectorThroughStack(SDValue Op); 1797ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue ExpandVectorBuildThroughStack(SDNode* Node); 1808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 181e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach std::pair<SDValue, SDValue> ExpandAtomic(SDNode *Node); 182e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 1838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void ExpandNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void PromoteNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 185fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings 186fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings SDValue getLastCALLSEQ() { return LastCALLSEQ.back(); /*[depthCALLSEQ];*/ } 187fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings void setLastCALLSEQ(const SDValue s) { LastCALLSEQ.back() /*[depthCALLSEQ]*/ = s; } 188fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings void pushLastCALLSEQ(SDValue s) { 189fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings depthCALLSEQ++; 190fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings LastCALLSEQ.push_back(s); 191fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings } 192fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings void popLastCALLSEQ() { 193fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings LastCALLSEQ.pop_back(); 194fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings depthCALLSEQ--; 195fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings assert(depthCALLSEQ >= 0 && "excess pop of LastCALLSEQ"); 196fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings } 1973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner}; 1983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2005a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 2015a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// performs the same shuffe in terms of order or result bytes, but on a type 2025a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// whose vector element type is narrower than the original shuffle type. 2039008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman/// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 2046e9926108a69efbc11f1cadf947e98500e4d4228Jim GrosbachSDValue 2056e9926108a69efbc11f1cadf947e98500e4d4228Jim GrosbachSelectionDAGLegalize::ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl, 2065a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue N1, SDValue N2, 2079008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVectorImpl<int> &Mask) const { 2085a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumMaskElts = VT.getVectorNumElements(); 2095a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumDestElts = NVT.getVectorNumElements(); 2109008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman unsigned NumEltsGrowth = NumDestElts / NumMaskElts; 2119008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 2129008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(NumEltsGrowth && "Cannot promote to vector type with fewer elts!"); 2139008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 2149008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman if (NumEltsGrowth == 1) 2159008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &Mask[0]); 2166e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach 2179008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVector<int, 8> NewMask; 2185a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman for (unsigned i = 0; i != NumMaskElts; ++i) { 2199008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman int Idx = Mask[i]; 2209008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman for (unsigned j = 0; j != NumEltsGrowth; ++j) { 2216e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach if (Idx < 0) 2229008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(-1); 2239008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman else 2249008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(Idx * NumEltsGrowth + j); 2254352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner } 22615684b29552393553524171bff1913e750f390f8Rafael Espindola } 2275a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman assert(NewMask.size() == NumDestElts && "Non-integer NumEltsGrowth?"); 2289008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(TLI.isShuffleMaskLegal(NewMask, NVT) && "Shuffle not legal?"); 2299008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &NewMask[0]); 2304352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 2314352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 2325aa4977fba97e816b5735f0bc53f16a46b24de63Bill WendlingSelectionDAGLegalize::SelectionDAGLegalize(SelectionDAG &dag, 2331fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman CodeGenOpt::Level ol) 23455e59c186303ff02c0be7429da3b1b36c347f164Dan Gohman : TM(dag.getTarget()), TLI(dag.getTargetLoweringInfo()), 23555e59c186303ff02c0be7429da3b1b36c347f164Dan Gohman DAG(dag), OptLevel(ol), 2361fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman ValueTypeActions(TLI.getValueTypeActions()) { 237825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE && 2383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Too many value types for ValueTypeActions to hold!"); 2393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAGLegalize::LegalizeDAG() { 242fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings depthCALLSEQ = 0; 243fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings pushLastCALLSEQ(DAG.getEntryNode()); 244e5ab34e05d701da042619bf540046efc3c7bc41fMon P Wang 245ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // The legalize process is inherently a bottom-up recursive process (users 246ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // legalize their uses before themselves). Given infinite stack space, we 247ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // could just start legalizing on the root and traverse the whole graph. In 248ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // practice however, this causes us to run out of stack space on large basic 24932fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // blocks. To avoid this problem, compute an ordering of the nodes where each 25032fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // node is only legalized after all of its operands are legalized. 251f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman DAG.AssignTopologicalOrder(); 252f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman for (SelectionDAG::allnodes_iterator I = DAG.allnodes_begin(), 2537896c9f436a4eda5ec15e882a7505ba482a2fcd0Chris Lattner E = prior(DAG.allnodes_end()); I != llvm::next(E); ++I) 254b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(I, 0)); 25532fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner 25632fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // Finally, it's possible the root changed. Get the new root. 257475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue OldRoot = DAG.getRoot(); 25832fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner assert(LegalizedNodes.count(OldRoot) && "Root didn't get legalized?"); 25932fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner DAG.setRoot(LegalizedNodes[OldRoot]); 2603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LegalizedNodes.clear(); 2623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remove dead nodes now. 264190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner DAG.RemoveDeadNodes(); 2653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2676831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 2686831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// FindCallEndFromCallStart - Given a chained node that is part of a call 2696831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_END node that terminates the call sequence. 270a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastingsstatic SDNode *FindCallEndFromCallStart(SDNode *Node, int depth = 0) { 271fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings int next_depth = depth; 272a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings if (Node->getOpcode() == ISD::CALLSEQ_START) 273fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings next_depth = depth + 1; 274fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings if (Node->getOpcode() == ISD::CALLSEQ_END) { 275fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings assert(depth > 0 && "negative depth!"); 276fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings if (depth == 1) 27756500edc7a2599e651d39df71a714e1e255ed96aStuart Hastings return Node; 278fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings else 279fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings next_depth = depth - 1; 28056500edc7a2599e651d39df71a714e1e255ed96aStuart Hastings } 2816831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->use_empty()) 2826831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; // No CallSeqEnd 283fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2846831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // The chain is usually at the end. 285475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue TheChain(Node, Node->getNumValues()-1); 286825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) { 2876831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Sometimes it's at the beginning. 288475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, 0); 289825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) { 2906831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Otherwise, hunt for it. 2916831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 1, e = Node->getNumValues(); i != e; ++i) 292825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Node->getValueType(i) == MVT::Other) { 293475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, i); 2946831a815999dde4cf801e2076e66b4943964daf2Chris Lattner break; 2956831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 296fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 297fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, we walked into a node without a chain. 298825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) 2996831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 3006831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 3016831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 302fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3036831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (SDNode::use_iterator UI = Node->use_begin(), 3046831a815999dde4cf801e2076e66b4943964daf2Chris Lattner E = Node->use_end(); UI != E; ++UI) { 305fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3066831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Make sure to only follow users of our token chain. 3078968450305c28444edc3c272d8752a8db0c2f34aDan Gohman SDNode *User = *UI; 3086831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) 3096831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (User->getOperand(i) == TheChain) 310fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings if (SDNode *Result = FindCallEndFromCallStart(User, next_depth)) 3116831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 3126831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 3136831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 3146831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 3156831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 316fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// FindCallStartFromCallEnd - Given a chained node that is part of a call 3176831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_START node that initiates the call sequence. 3186831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallStartFromCallEnd(SDNode *Node) { 319a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings int nested = 0; 3206831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(Node && "Didn't find callseq_start for a call??"); 321a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings while (Node->getOpcode() != ISD::CALLSEQ_START || nested) { 322a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings Node = Node->getOperand(0).getNode(); 323a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings assert(Node->getOperand(0).getValueType() == MVT::Other && 324a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings "Node doesn't have a token chain argument!"); 325a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings switch (Node->getOpcode()) { 326a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings default: 327a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings break; 328a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings case ISD::CALLSEQ_START: 329a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings if (!nested) 330a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings return Node; 331a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings nested--; 332a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings break; 333a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings case ISD::CALLSEQ_END: 334a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings nested++; 335a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings break; 336a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings } 337a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings } 338a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings return 0; 3396831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 3406831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3416831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// LegalizeAllNodesNotLeadingTo - Recursively walk the uses of N, looking to 342fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// see if any uses can reach Dest. If no dest operands can get to dest, 3436831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// legalize them, legalize ourself, and return false, otherwise, return true. 344c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 345c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// Keep track of the nodes we fine that actually do lead to Dest in 346c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// NodesLeadingTo. This avoids retraversing them exponential number of times. 347c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 348c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattnerbool SelectionDAGLegalize::LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 34900755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo) { 3506831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (N == Dest) return true; // N certainly leads to Dest :) 351fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 352c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // If we've already processed this node and it does lead to Dest, there is no 353c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // need to reprocess it. 354c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (NodesLeadingTo.count(N)) return true; 355fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3566831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the first result of this node has been already legalized, then it cannot 3576831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // reach N. 35874807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman if (LegalizedNodes.count(SDValue(N, 0))) return false; 359fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3606831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node has not already been legalized. Check and legalize all 3616831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // operands. If none lead to Dest, then we can legalize this node. 3626831a815999dde4cf801e2076e66b4943964daf2Chris Lattner bool OperandsLeadToDest = false; 3636831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) 3646831a815999dde4cf801e2076e66b4943964daf2Chris Lattner OperandsLeadToDest |= // If an operand leads to Dest, so do we. 3656e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach LegalizeAllNodesNotLeadingTo(N->getOperand(i).getNode(), Dest, 3666e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach NodesLeadingTo); 3676831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 368c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (OperandsLeadToDest) { 369c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo.insert(N); 370c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner return true; 371c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 3726831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3736831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node looks safe, legalize it and return false. 374b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(N, 0)); 3756831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return false; 3766831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 3776831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3789f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// ExpandConstantFP - Expands the ConstantFP node to an integer constant or 3799f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// a load from the constant pool. 380475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanstatic SDValue ExpandConstantFP(ConstantFPSDNode *CFP, bool UseCP, 3810d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman SelectionDAG &DAG, const TargetLowering &TLI) { 382004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng bool Extend = false; 38333c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen DebugLoc dl = CFP->getDebugLoc(); 384004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 385004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // If a FP immediate is precise when represented as a float and if the 386004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // target can do an extending load from float to double, we put it into 387004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // the constant pool as a float, even if it's is statically typed as a 388aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // double. This shrinks FP constants and canonicalizes them for targets where 389aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // an FP extending load is the same cost as a normal load (such as on the x87 390aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // fp stack or PPC FP unit). 391e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = CFP->getValueType(0); 3924fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman ConstantFP *LLVMC = const_cast<ConstantFP*>(CFP->getConstantFPValue()); 3939f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng if (!UseCP) { 394825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert((VT == MVT::f64 || VT == MVT::f32) && "Invalid type expansion"); 3957111b02c734c992b8c97d9918118768026dad79eDale Johannesen return DAG.getConstant(LLVMC->getValueAPF().bitcastToAPInt(), 396825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (VT == MVT::f64) ? MVT::i64 : MVT::i32); 397279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng } 398279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng 399e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OrigVT = VT; 400e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SVT = VT; 401825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson while (SVT != MVT::f32) { 402825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SVT = (MVT::SimpleValueType)(SVT.getSimpleVT().SimpleTy - 1); 4037720cb3823d5b5868f9b88b0127277820edcb562Dan Gohman if (ConstantFPSDNode::isValueValidForType(SVT, CFP->getValueAPF()) && 404ef12057737229452c17983faa20857dba441ef05Evan Cheng // Only do this if the target has a native EXTLOAD instruction from 405ef12057737229452c17983faa20857dba441ef05Evan Cheng // smaller type. 4060329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng TLI.isLoadExtLegal(ISD::EXTLOAD, SVT) && 407aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner TLI.ShouldShrinkFPConstant(OrigVT)) { 40823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *SType = SVT.getTypeForEVT(*DAG.getContext()); 409baf3c404409d5e47b13984a7f95bfbd6d1f2e79eOwen Anderson LLVMC = cast<ConstantFP>(ConstantExpr::getFPTrunc(LLVMC, SType)); 410ef12057737229452c17983faa20857dba441ef05Evan Cheng VT = SVT; 411ef12057737229452c17983faa20857dba441ef05Evan Cheng Extend = true; 412ef12057737229452c17983faa20857dba441ef05Evan Cheng } 413004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng } 414004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 415475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(LLVMC, TLI.getPointerTy()); 4161606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 417ef12057737229452c17983faa20857dba441ef05Evan Cheng if (Extend) 418a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings return DAG.getExtLoad(ISD::EXTLOAD, dl, OrigVT, 419bcc8017c738e92d9c1af221b11c4916cb524184eEvan Cheng DAG.getEntryNode(), 42085ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner CPIdx, MachinePointerInfo::getConstantPool(), 42185ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner VT, false, false, Alignment); 42233c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen return DAG.getLoad(OrigVT, dl, DAG.getEntryNode(), CPIdx, 42385ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getConstantPool(), false, false, 4241e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 425004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng} 426004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 427f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedStore - Expands an unaligned store to 2 half-size stores. 428f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 429475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedStore(StoreSDNode *ST, SelectionDAG &DAG, 4300d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman const TargetLowering &TLI) { 431475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = ST->getChain(); 432475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = ST->getBasePtr(); 433475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Val = ST->getValue(); 434e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Val.getValueType(); 435907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen int Alignment = ST->getAlignment(); 436bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = ST->getDebugLoc(); 43783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ST->getMemoryVT().isFloatingPoint() || 43883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands ST->getMemoryVT().isVector()) { 43923b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT intVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits()); 44005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 44105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a bitconvert of the value to the integer type of the 44205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // same size, then a (misaligned) int store. 44305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // FIXME: Does not handle truncating floating point stores! 444bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue Result = DAG.getNode(ISD::BITCAST, dl, intVT, Val); 445da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner return DAG.getStore(Chain, dl, Result, Ptr, ST->getPointerInfo(), 446da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->isVolatile(), ST->isNonTemporal(), Alignment); 44705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } else { 44805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do a (aligned) store to a stack slot, then copy from the stack slot 44905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // to the final destination using (unaligned) integer loads and stores. 450e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT StoredVT = ST->getMemoryVT(); 451e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT RegVT = 452adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng TLI.getRegisterType(*DAG.getContext(), 453adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT::getIntegerVT(*DAG.getContext(), 454adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng StoredVT.getSizeInBits())); 45505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned StoredBytes = StoredVT.getSizeInBits() / 8; 45605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned RegBytes = RegVT.getSizeInBits() / 8; 45705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned NumRegs = (StoredBytes + RegBytes - 1) / RegBytes; 45805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 459fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Make sure the stack slot is also aligned for the register type. 460fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands SDValue StackPtr = DAG.CreateStackTemporary(StoredVT, RegVT); 461fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 462fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Perform the original store, only redirected to the stack slot. 463fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Store = DAG.getTruncStore(Chain, dl, 464ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Val, StackPtr, MachinePointerInfo(), 465ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner StoredVT, false, false, 0); 46605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 46705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SmallVector<SDValue, 8> Stores; 46805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned Offset = 0; 46905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 47005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do all but one copies using the full register width. 47105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands for (unsigned i = 1; i < NumRegs; i++) { 47205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Load one integer register's worth from the stack slot. 473ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Load = DAG.getLoad(RegVT, dl, Store, StackPtr, 474ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(), 4751e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 47605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Store it to the final location. Remember the store. 477bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, Ptr, 478ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner ST->getPointerInfo().getWithOffset(Offset), 4791e559443a17d1b335f697551c6263ba60d5dd827David Greene ST->isVolatile(), ST->isNonTemporal(), 48005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 48105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Increment the pointers. 48205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Offset += RegBytes; 483bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 48405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Increment); 485bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 48605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 48705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 488fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // The last store may be partial. Do a truncating store. On big-endian 489fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // machines this requires an extending load from the stack slot to ensure 490fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // that the bits are in the right place. 491adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 492adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng 8 * (StoredBytes - Offset)); 493fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 494fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Load from the stack slot. 495a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Store, StackPtr, 4963d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MachinePointerInfo(), 4973d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MemVT, false, false, 0); 49805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 499bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, Ptr, 5003d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ST->getPointerInfo() 5013d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner .getWithOffset(Offset), 502fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MemVT, ST->isVolatile(), 5031e559443a17d1b335f697551c6263ba60d5dd827David Greene ST->isNonTemporal(), 50405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 50505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The order of the stores doesn't matter - say it with a TokenFactor. 506825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 50705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Stores.size()); 50805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 509907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 51083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(ST->getMemoryVT().isInteger() && 51183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands !ST->getMemoryVT().isVector() && 512907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen "Unaligned store of unknown type."); 513f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Get the half-size VT 514bceddbdc919fc2ca7bc8c3911586ba93367686f0Ken Dyck EVT NewStoredVT = ST->getMemoryVT().getHalfSizedIntegerVT(*DAG.getContext()); 51583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands int NumBits = NewStoredVT.getSizeInBits(); 516f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int IncrementSize = NumBits / 8; 517f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 518f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Divide the stored value in two parts. 51995771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson SDValue ShiftAmount = DAG.getConstant(NumBits, 52095771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(Val.getValueType())); 521475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = Val; 522bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Hi = DAG.getNode(ISD::SRL, dl, VT, Val, ShiftAmount); 523f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 524f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Store the two parts 525475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store1, Store2; 526bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store1 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Lo:Hi, Ptr, 527da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo(), NewStoredVT, 5281e559443a17d1b335f697551c6263ba60d5dd827David Greene ST->isVolatile(), ST->isNonTemporal(), Alignment); 529bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 530f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 531dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands Alignment = MinAlign(Alignment, IncrementSize); 532bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store2 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Hi:Lo, Ptr, 533da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo().getWithOffset(IncrementSize), 5341e559443a17d1b335f697551c6263ba60d5dd827David Greene NewStoredVT, ST->isVolatile(), ST->isNonTemporal(), 5351e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 536f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 537825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Store1, Store2); 538f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 539f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 540f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedLoad - Expands an unaligned load to 2 half-size loads. 541f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 542475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedLoad(LoadSDNode *LD, SelectionDAG &DAG, 543e9530ecae4897fe8157bd4d7616043bd8c0484e2Dan Gohman const TargetLowering &TLI) { 544475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = LD->getChain(); 545475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = LD->getBasePtr(); 546e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = LD->getValueType(0); 547e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT LoadedVT = LD->getMemoryVT(); 548bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = LD->getDebugLoc(); 54983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (VT.isFloatingPoint() || VT.isVector()) { 55023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT intVT = EVT::getIntegerVT(*DAG.getContext(), LoadedVT.getSizeInBits()); 55105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 55205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a (misaligned) integer load of the same size, 55305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // then bitconvert to floating point or vector. 554ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue newLoad = DAG.getLoad(intVT, dl, Chain, Ptr, LD->getPointerInfo(), 555ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->isVolatile(), 5561e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), LD->getAlignment()); 557bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue Result = DAG.getNode(ISD::BITCAST, dl, LoadedVT, newLoad); 55805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (VT.isFloatingPoint() && LoadedVT != VT) 559bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, VT, Result); 560907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen 56105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Ops[] = { Result, Chain }; 562bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 563ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner } 564bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 565ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Copy the value to a (aligned) stack slot using (unaligned) integer 566ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // loads and stores, then do a (aligned) load from the stack slot. 567ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner EVT RegVT = TLI.getRegisterType(*DAG.getContext(), intVT); 568ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner unsigned LoadedBytes = LoadedVT.getSizeInBits() / 8; 569ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner unsigned RegBytes = RegVT.getSizeInBits() / 8; 570ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner unsigned NumRegs = (LoadedBytes + RegBytes - 1) / RegBytes; 571ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 572ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Make sure the stack slot is also aligned for the register type. 573ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue StackBase = DAG.CreateStackTemporary(LoadedVT, RegVT); 574ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 575ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 576ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SmallVector<SDValue, 8> Stores; 577ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue StackPtr = StackBase; 578ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner unsigned Offset = 0; 579ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 580ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Do all but one copies using the full register width. 581ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner for (unsigned i = 1; i < NumRegs; i++) { 582ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Load one integer register's worth from the original location. 583ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Load = DAG.getLoad(RegVT, dl, Chain, Ptr, 584ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(Offset), 585ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->isVolatile(), LD->isNonTemporal(), 586ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MinAlign(LD->getAlignment(), Offset)); 58705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 588ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, StackPtr, 5896229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner MachinePointerInfo(), false, false, 0)); 590ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Increment the pointers. 591ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Offset += RegBytes; 592ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 593ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 594ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Increment); 59505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 596ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 597ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // The last copy may be partial. Do an extending load. 598ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 599ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 8 * (LoadedBytes - Offset)); 600a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Chain, Ptr, 601ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(Offset), 602ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MemVT, LD->isVolatile(), 603ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->isNonTemporal(), 604ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MinAlign(LD->getAlignment(), Offset)); 605ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Follow the load with a store to the stack slot. Remember the store. 606ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // On big-endian machines this requires a truncating store to ensure 607ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // that the bits end up in the right place. 608ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, StackPtr, 609ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(), MemVT, 610ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, 0)); 611ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 612ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // The order of the stores doesn't matter - say it with a TokenFactor. 613ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 614ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Stores.size()); 615ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 616ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Finally, perform the original load only redirected to the stack slot. 617a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Load = DAG.getExtLoad(LD->getExtensionType(), dl, VT, TF, StackBase, 618ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(), LoadedVT, false, false, 0); 619ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 620ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Callers expect a MERGE_VALUES node. 621ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Ops[] = { Load, TF }; 622ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner return DAG.getMergeValues(Ops, 2, dl); 623907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 62483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(LoadedVT.isInteger() && !LoadedVT.isVector() && 625e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner "Unaligned load of unsupported type."); 626e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner 6278155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // Compute the new VT that is half the size of the old one. This is an 6288155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // integer MVT. 62983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned NumBits = LoadedVT.getSizeInBits(); 630e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewLoadedVT; 63123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson NewLoadedVT = EVT::getIntegerVT(*DAG.getContext(), NumBits/2); 632e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner NumBits >>= 1; 633fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 634e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned Alignment = LD->getAlignment(); 635e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned IncrementSize = NumBits / 8; 636f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ISD::LoadExtType HiExtType = LD->getExtensionType(); 637f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 638f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If the original load is NON_EXTLOAD, the hi part load must be ZEXTLOAD. 639f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (HiExtType == ISD::NON_EXTLOAD) 640f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio HiExtType = ISD::ZEXTLOAD; 641f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 642f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Load the value in two parts 643475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 644f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (TLI.isLittleEndian()) { 645a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getPointerInfo(), 646ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner NewLoadedVT, LD->isVolatile(), 6471e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), Alignment); 648bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 649f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 650a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, 651ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 652ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner NewLoadedVT, LD->isVolatile(), 6536e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach LD->isNonTemporal(), MinAlign(Alignment,IncrementSize)); 654f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 655a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getPointerInfo(), 656ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner NewLoadedVT, LD->isVolatile(), 6571e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), Alignment); 658bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 659f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 660a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, 661ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 662ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner NewLoadedVT, LD->isVolatile(), 6636e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach LD->isNonTemporal(), MinAlign(Alignment,IncrementSize)); 664f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 665f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 666f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // aggregate the two parts 66795771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson SDValue ShiftAmount = DAG.getConstant(NumBits, 66895771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(Hi.getValueType())); 669bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::SHL, dl, VT, Hi, ShiftAmount); 670bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::OR, dl, VT, Result, Lo); 671f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 672825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 673f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Hi.getValue(1)); 674f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 675475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Result, TF }; 676bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 677f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 678912095becac923ff614d7b07728eb345ada67765Evan Cheng 6796867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// PerformInsertVectorEltInMemory - Some target cannot handle a variable 6806867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 6816867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// is necessary to spill the vector being inserted into to memory, perform 6826867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// the insert there, and then read the result back. 683475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize:: 684bb5da918545efb54857a09c983a5a7f22a7e04d4Dale JohannesenPerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, SDValue Idx, 685bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl) { 686475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1 = Vec; 687475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp2 = Val; 688475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = Idx; 689fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 6906867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // If the target doesn't support this, we have to spill the input vector 6916867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // to a temporary stack slot, update the element, then reload it. This is 6926867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // badness. We could also load the value into a vector register (either 6936867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // with a "move to register" or "extload into register" instruction, then 6946867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // permute it into place, if the idx is a constant and if the idx is 6956867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // supported by the target. 696e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp1.getValueType(); 697e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 698e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT IdxVT = Tmp3.getValueType(); 699e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PtrVT = TLI.getPointerTy(); 700475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(VT); 7016867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 702ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex(); 703ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 7046867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the vector. 705bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Tmp1, StackPtr, 70685ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getFixedStack(SPFI), 7071e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 7086867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 7096867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Truncate or zero extend offset to target pointer type. 7108e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands unsigned CastOpc = IdxVT.bitsGT(PtrVT) ? ISD::TRUNCATE : ISD::ZERO_EXTEND; 711bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(CastOpc, dl, PtrVT, Tmp3); 7126867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Add the offset to the index. 713aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned EltSize = EltVT.getSizeInBits()/8; 714bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(ISD::MUL, dl, IdxVT, Tmp3,DAG.getConstant(EltSize, IdxVT)); 715bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue StackPtr2 = DAG.getNode(ISD::ADD, dl, IdxVT, Tmp3, StackPtr); 7166867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the scalar value. 71785ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner Ch = DAG.getTruncStore(Ch, dl, Tmp2, StackPtr2, MachinePointerInfo(), EltVT, 7181e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 7196867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Load the updated vector. 720bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getLoad(VT, dl, Ch, StackPtr, 72185ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getFixedStack(SPFI), false, false, 0); 7226867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman} 7236867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 724e9f1015d1f184a51aaadfd03be0846bd5e7d08a2Mon P Wang 7253f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanSDValue SelectionDAGLegalize:: 7263f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, SDValue Idx, DebugLoc dl) { 7273f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (ConstantSDNode *InsertPos = dyn_cast<ConstantSDNode>(Idx)) { 7283f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // SCALAR_TO_VECTOR requires that the type of the value being inserted 7293f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // match the element type of the vector being created, except for 7303f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // integers in which case the inserted value can be over width. 731e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = Vec.getValueType().getVectorElementType(); 7323f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (Val.getValueType() == EltVT || 7333f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman (EltVT.isInteger() && Val.getValueType().bitsGE(EltVT))) { 7343f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ScVec = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, 7353f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Vec.getValueType(), Val); 7363f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 7373f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman unsigned NumElts = Vec.getValueType().getVectorNumElements(); 7383f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // We generate a shuffle of InVec and ScVec, so the shuffle mask 7393f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // should be 0,1,2,3,4,5... with the appropriate element replaced with 7403f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // elt 0 of the RHS. 7413f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SmallVector<int, 8> ShufOps; 7423f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0; i != NumElts; ++i) 7433f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman ShufOps.push_back(i != InsertPos->getZExtValue() ? i : NumElts); 7443f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 7453f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return DAG.getVectorShuffle(Vec.getValueType(), dl, Vec, ScVec, 7463f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman &ShufOps[0]); 7473f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 7483f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 7493f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return PerformInsertVectorEltInMemory(Vec, Val, Idx, dl); 7503f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman} 7513f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 7527ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::OptimizeFloatStore(StoreSDNode* ST) { 7537ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Turn 'store float 1.0, Ptr' -> 'store int 0x12345678, Ptr' 7547ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: We shouldn't do this for TargetConstantFP's. 7557ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: move this to the DAG Combiner! Note that we can't regress due 7567ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // to phase ordering between legalized code and the dag combiner. This 7577ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // probably means that we need to integrate dag combiner and legalizer 7587ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // together. 7597ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We generally can't do this one for long doubles. 7607ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp1 = ST->getChain(); 7617ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp2 = ST->getBasePtr(); 7627ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp3; 7637ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Alignment = ST->getAlignment(); 7647ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bool isVolatile = ST->isVolatile(); 7651e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = ST->isNonTemporal(); 7667ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = ST->getDebugLoc(); 7677ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(ST->getValue())) { 768825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (CFP->getValueType(0) == MVT::f32 && 769825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson getTypeAction(MVT::i32) == Legal) { 7707ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF(). 7717ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bitcastToAPInt().zextOrTrunc(32), 772825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::i32); 773da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 774da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner isVolatile, isNonTemporal, Alignment); 775da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner } 776bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 777da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner if (CFP->getValueType(0) == MVT::f64) { 7787ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // If this target supports 64-bit registers, do a single 64-bit store. 779825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (getTypeAction(MVT::i64) == Legal) { 7807ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF().bitcastToAPInt(). 781825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson zextOrTrunc(64), MVT::i64); 782da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 783da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner isVolatile, isNonTemporal, Alignment); 784da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner } 785bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 786da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner if (getTypeAction(MVT::i32) == Legal && !ST->isVolatile()) { 7877ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, if the target supports 32-bit registers, use 2 32-bit 7887ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // stores. If the target supports neither 32- nor 64-bits, this 7897ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // xform is certainly not worth it. 7907ef3d178660b82d1571757e49f44b004d772a116Eli Friedman const APInt &IntVal =CFP->getValueAPF().bitcastToAPInt(); 79140f8f6264d5af2c38e797e0dc59827cd231e8ff7Jay Foad SDValue Lo = DAG.getConstant(IntVal.trunc(32), MVT::i32); 792825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Hi = DAG.getConstant(IntVal.lshr(32).trunc(32), MVT::i32); 7937ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (TLI.isBigEndian()) std::swap(Lo, Hi); 7947ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 795da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Lo = DAG.getStore(Tmp1, dl, Lo, Tmp2, ST->getPointerInfo(), isVolatile, 796da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner isNonTemporal, Alignment); 7977ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 7987ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DAG.getIntPtrConstant(4)); 799da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Hi = DAG.getStore(Tmp1, dl, Hi, Tmp2, 800da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo().getWithOffset(4), 8011e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, MinAlign(Alignment, 4U)); 8027ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 803825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 8047ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 8057ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 8067ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 8078e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng return SDValue(0, 0); 8087ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 8097ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 810a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// LegalizeOp - We know that the specified value has a legal type, and 811a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// that its operands are legal. Now ensure that the operation itself 812a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// is legal, recursively ensuring that the operands' operations remain 813a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// legal. 814475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) { 81509ec1b058331aadb29a348091611d23892b5c492Chris Lattner if (Op.getOpcode() == ISD::TargetConstant) // Allow illegal target nodes. 81609ec1b058331aadb29a348091611d23892b5c492Chris Lattner return Op; 817fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 818ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif SDNode *Node = Op.getNode(); 8197d2ad624fa749a6d3edac0d94e9c107989c16304Dale Johannesen DebugLoc dl = Node->getDebugLoc(); 820e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner 8211fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 8221fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman assert(getTypeAction(Node->getValueType(i)) == Legal && 8231fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 8241fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman 8251fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 8266e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach assert((isTypeLegal(Node->getOperand(i).getValueType()) || 8271fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman Node->getOperand(i).getOpcode() == ISD::TargetConstant) && 8281fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 8293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 83045982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 83145982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 832475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 833e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (I != LegalizedNodes.end()) return I->second; 8343e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 835475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 836475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result = Op; 837456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner bool isCustom = false; 838fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 8398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Figure out the correct action; the way to query this varies by opcode 8406b9a293a0c7d86c07d704da5facb34cc03ce1d02Bill Wendling TargetLowering::LegalizeAction Action = TargetLowering::Legal; 8418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman bool SimpleFinishLegalizing = true; 8423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 8438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_W_CHAIN: 8448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_WO_CHAIN: 8458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_VOID: 8468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAARG: 8478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STACKSAVE: 848825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Action = TLI.getOperationAction(Node->getOpcode(), MVT::Other); 8498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 8518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 8528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 8538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 8548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType()); 8558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: 8578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 858e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT InnerType = cast<VTSDNode>(Node->getOperand(1))->getVT(); 8598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), InnerType); 8608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 8623be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SELECT_CC: 8633be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SETCC: 8643be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::BR_CC: { 8653be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CCOperand = Node->getOpcode() == ISD::SELECT_CC ? 4 : 8663be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getOpcode() == ISD::SETCC ? 2 : 1; 8673be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CompareOperand = Node->getOpcode() == ISD::BR_CC ? 2 : 0; 868e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(CompareOperand).getValueType(); 8693be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman ISD::CondCode CCCode = 8703be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman cast<CondCodeSDNode>(Node->getOperand(CCOperand))->get(); 8713be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getCondCodeAction(CCCode, OpVT); 8723be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Action == TargetLowering::Legal) { 8733be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Node->getOpcode() == ISD::SELECT_CC) 8743be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 8753be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getValueType(0)); 8763be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman else 8773be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), OpVT); 8783be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8793be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 8803be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::LOAD: 8828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STORE: 883ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: Model these properly. LOAD and STORE are complicated, and 884ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // STORE expects the unlegalized operand in some cases. 885ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 886ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_START: 8888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_END: 889ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: This shouldn't be necessary. These nodes have special properties 890ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // dealing with the recursive nature of legalization. Removing this 891ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // special case should be done as part of making LegalizeDAG non-recursive. 892ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 893ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: 8958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 8968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SADDO: 8978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SSUBO: 8988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UADDO: 8998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::USUBO: 9008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SMULO: 9018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UMULO: 9028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FPOWI: 9038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 9048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 9058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 906c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach case ISD::EH_SJLJ_SETJMP: 907c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach case ISD::EH_SJLJ_LONGJMP: 908e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach case ISD::EH_SJLJ_DISPATCHSETUP: 909f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // These operations lie about being legal: when they claim to be legal, 910f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // they should actually be expanded. 9118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 9128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Action == TargetLowering::Legal) 9138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Expand; 9148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAMPOLINE: 9168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 9178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 9184bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // These operations lie about being legal: when they claim to be legal, 9194bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // they should actually be custom-lowered. 9204bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 9214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Action == TargetLowering::Legal) 9224bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TargetLowering::Custom; 9238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BUILD_VECTOR: 925b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // A weird case: legalization for BUILD_VECTOR never legalizes the 926b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // operands! 927b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // FIXME: This really sucks... changing it isn't semantically incorrect, 928b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // but it massively pessimizes the code for floating-point BUILD_VECTORs 929b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // because ConstantFP operands get legalized into constant pool loads 930b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // before the BUILD_VECTOR code can see them. It doesn't usually bite, 931b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // though, because BUILD_VECTORS usually get lowered into other nodes 932b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // which get legalized properly. 9338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SimpleFinishLegalizing = false; 934948c1b1cda280c6428dbeaa03a6c2c559dbb93f4Chris Lattner break; 9353e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 936d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner if (Node->getOpcode() >= ISD::BUILTIN_OP_END) { 9378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Legal; 9388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 9398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 9408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 943d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner 9448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (SimpleFinishLegalizing) { 9458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVector<SDValue, 8> Ops, ResultVals; 9468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 9478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops.push_back(LegalizeOp(Node->getOperand(i))); 9488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 9498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: break; 9508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR: 9518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRIND: 9528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_JT: 9538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_CC: 9548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRCOND: 955fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings assert(depthCALLSEQ == 1 && "branch inside CALLSEQ_BEGIN/END?"); 956fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings // Branches tweak the chain to include LastCALLSEQ 957825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ops[0] = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Ops[0], 958fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings getLastCALLSEQ()); 9598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[0] = LegalizeOp(Ops[0]); 960fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings setLastCALLSEQ(DAG.getEntryNode()); 9618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SHL: 9638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRL: 9648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRA: 9658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTL: 9668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTR: 9678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Legalizing shifts/rotates requires adjusting the shift amount 9688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // to the appropriate width. 9698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!Ops[1].getValueType().isVector()) 9706154f6c9292179fab6346ae8336f2ad790b52028Owen Anderson Ops[1] = LegalizeOp(DAG.getShiftAmountOperand(Ops[0].getValueType(), 9716154f6c9292179fab6346ae8336f2ad790b52028Owen Anderson Ops[1])); 9728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 973db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SRL_PARTS: 974db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SRA_PARTS: 975db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SHL_PARTS: 976db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman // Legalizing shifts/rotates requires adjusting the shift amount 977db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman // to the appropriate width. 978db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman if (!Ops[2].getValueType().isVector()) 9796154f6c9292179fab6346ae8336f2ad790b52028Owen Anderson Ops[2] = LegalizeOp(DAG.getShiftAmountOperand(Ops[0].getValueType(), 9806154f6c9292179fab6346ae8336f2ad790b52028Owen Anderson Ops[2])); 9812c9489d6e96d99f77b6c31919805b5e61954deb2Dan Gohman break; 9828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 984027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), Ops.data(), 985027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Ops.size()), 0); 9868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Action) { 9878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Legal: 988d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 9898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Result.getValue(i)); 9908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Custom: 9928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FIXME: The handling for custom lowering with multiple results is 9938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // a complete mess. 9948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = TLI.LowerOperation(Result, DAG); 9958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Tmp1.getNode()) { 9968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) { 9978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (e == 1) 9988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1); 9998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 10008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1.getValue(i)); 10018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 10028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 10038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 10048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 10058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FALL THROUGH 10068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Expand: 10078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ExpandNode(Result.getNode(), ResultVals); 10088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 10098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Promote: 10108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman PromoteNode(Result.getNode(), ResultVals); 10118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 10128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 10138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!ResultVals.empty()) { 10148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = ResultVals.size(); i != e; ++i) { 10158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (ResultVals[i] != SDValue(Node, i)) 10168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals[i] = LegalizeOp(ResultVals[i]); 10178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman AddLegalizedOperand(SDValue(Node, i), ResultVals[i]); 10188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 10198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman return ResultVals[Op.getResNo()]; 1020d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner } 10218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 10228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 10238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 10248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: 1025e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#ifndef NDEBUG 1026993aacedfdc3f156f667b4efa280ee79eab3b898David Greene dbgs() << "NODE: "; 1027993aacedfdc3f156f667b4efa280ee79eab3b898David Greene Node->dump( &DAG); 1028993aacedfdc3f156f667b4efa280ee79eab3b898David Greene dbgs() << "\n"; 1029e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#endif 103035a389344d21178ee280c2410401b2060b5b879cChris Lattner assert(0 && "Do not know how to legalize this operator!"); 103198ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman 1032b2827b0901162169bb2692b77a839c9767849134Chris Lattner case ISD::BUILD_VECTOR: 1033b2827b0901162169bb2692b77a839c9767849134Chris Lattner switch (TLI.getOperationAction(ISD::BUILD_VECTOR, Node->getValueType(0))) { 103435a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 10352332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner case TargetLowering::Custom: 10362332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Tmp3 = TLI.LowerOperation(Result, DAG); 1037ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()) { 10382332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Result = Tmp3; 10392332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 10402332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 10412332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner // FALLTHROUGH 1042ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner case TargetLowering::Expand: 1043ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandBUILD_VECTOR(Result.getNode()); 1044b2827b0901162169bb2692b77a839c9767849134Chris Lattner break; 10452332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 10462332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 10476831a815999dde4cf801e2076e66b4943964daf2Chris Lattner case ISD::CALLSEQ_START: { 10486831a815999dde4cf801e2076e66b4943964daf2Chris Lattner SDNode *CallEnd = FindCallEndFromCallStart(Node); 1049fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings assert(CallEnd && "didn't find CALLSEQ_END!"); 1050fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10516831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Recursively Legalize all of the inputs of the call end that do not lead 10526831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // to this call start. This ensures that any libcalls that need be inserted 10536831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // are inserted *before* the CALLSEQ_START. 105400755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner {SmallPtrSet<SDNode*, 32> NodesLeadingTo; 10556831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = CallEnd->getNumOperands(); i != e; ++i) 1056ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif LegalizeAllNodesNotLeadingTo(CallEnd->getOperand(i).getNode(), Node, 1057c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo); 1058c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 10596831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 1060ee7f8b5f058174a55372159bc23088198e5f5991Jim Grosbach // Now that we have legalized all of the inputs (which may have inserted 1061ee7f8b5f058174a55372159bc23088198e5f5991Jim Grosbach // libcalls), create the new CALLSEQ_START node. 10626831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 10636831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 1064ee7f8b5f058174a55372159bc23088198e5f5991Jim Grosbach // Merge in the last call to ensure that this call starts after the last 10656831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // call ended. 1066fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings if (getLastCALLSEQ().getOpcode() != ISD::EntryToken) { 1067825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 1068fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings Tmp1, getLastCALLSEQ()); 1069b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner Tmp1 = LegalizeOp(Tmp1); 1070b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner } 1071fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10726831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Do not try to legalize the target-specific arguments (#1+). 10736831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Tmp1 != Node->getOperand(0)) { 1074475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 10756831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Ops[0] = Tmp1; 10766e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), &Ops[0], 10776e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach Ops.size()), Result.getResNo()); 10786831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1079fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10806831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Remember that the CALLSEQ_START is legalized. 10814b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(0), Result); 10824b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) // If this has a flag result, remember it. 10834b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 1084fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10856831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Now that the callseq_start and all of the non-call nodes above this call 1086fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // sequence have been legalized, legalize the call itself. During this 10876831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // process, no libcalls can/will be inserted, guaranteeing that no calls 10886831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // can overlap. 10896831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Note that we are selecting this call! 1090fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings setLastCALLSEQ(SDValue(CallEnd, 0)); 1091fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10926831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call, starting from the CALLSEQ_END. 1093fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings LegalizeOp(getLastCALLSEQ()); 10946831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 10956831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 109616cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner case ISD::CALLSEQ_END: 1097fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings { 1098fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings SDNode *myCALLSEQ_BEGIN = FindCallStartFromCallEnd(Node); 1099fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings 1100fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings // If the CALLSEQ_START node hasn't been legalized first, legalize it. This 1101fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings // will cause this node to be legalized as well as handling libcalls right. 1102fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings if (getLastCALLSEQ().getNode() != Node) { 1103fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings LegalizeOp(SDValue(myCALLSEQ_BEGIN, 0)); 1104fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 1105fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings assert(I != LegalizedNodes.end() && 1106fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings "Legalizing the call start should have legalized this node!"); 1107fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings return I->second; 1108fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings } 1109fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings 1110fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings pushLastCALLSEQ(SDValue(myCALLSEQ_BEGIN, 0)); 11116831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1112fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1113fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, the call start has been legalized and everything is going 11146831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // according to plan. Just legalize ourselves normally here. 11153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 111670814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // Do not try to legalize the target-specific arguments (#1+), except for 111770814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // an optional flag input. 1118f1b4eafbfec976f939ec0ea3e8acf91cef5363e3Chris Lattner if (Node->getOperand(Node->getNumOperands()-1).getValueType() != MVT::Glue){ 111970814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0)) { 1120475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 112170814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 1122027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 1123027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman &Ops[0], Ops.size()), 1124027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result.getResNo()); 112570814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 112670814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } else { 112770814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(Node->getNumOperands()-1)); 112870814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0) || 112970814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 != Node->getOperand(Node->getNumOperands()-1)) { 1130475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 113170814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 113270814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops.back() = Tmp2; 1133027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 1134027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman &Ops[0], Ops.size()), 1135027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result.getResNo()); 113670814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 11376a5428934ba6159c1acc541944332e51a6cfa59aChris Lattner } 11386831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // This finishes up call legalization. 1139fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings popLastCALLSEQ(); 11401809d5fa216bbdc505502468b7bd85629e1e44bcStuart Hastings 11414b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner // If the CALLSEQ_END node has a flag, remember that we legalized it. 1142475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Result.getValue(0)); 11434b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) 1144475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Result.getValue(1)); 114599a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Result.getValue(Op.getResNo()); 1146f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::LOAD: { 1147466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng LoadSDNode *LD = cast<LoadSDNode>(Node); 1148466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = LegalizeOp(LD->getChain()); // Legalize the chain. 1149466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp2 = LegalizeOp(LD->getBasePtr()); // Legalize the base pointer. 11502d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 1151466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng ISD::LoadExtType ExtType = LD->getExtensionType(); 1152466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng if (ExtType == ISD::NON_EXTLOAD) { 1153e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1154027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 1155027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Tmp1, Tmp2, LD->getOffset()), 1156027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result.getResNo()); 1157466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = Result.getValue(0); 1158466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = Result.getValue(1); 1159fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1160466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng switch (TLI.getOperationAction(Node->getOpcode(), VT)) { 116135a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 1162f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1163f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned load and the target doesn't support it, 1164f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1165bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) { 1166e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = LD->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1167e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 1168f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (LD->getAlignment() < ABIAlignment){ 11696e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 1170debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson DAG, TLI); 1171f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp3 = Result.getOperand(0); 1172f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp4 = Result.getOperand(1); 1173907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp3 = LegalizeOp(Tmp3); 1174907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp4 = LegalizeOp(Tmp4); 1175f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1176f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1177f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 1178466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Custom: 1179466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = TLI.LowerOperation(Tmp3, DAG); 1180ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) { 1181466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = LegalizeOp(Tmp1); 1182466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1183466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1184466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1185466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Promote: { 1186466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Only promote a load of vector type to another. 118783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Cannot promote this load!"); 1188466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Change base type to a different vector type. 1189e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), VT); 1190466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng 1191ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Tmp1 = DAG.getLoad(NVT, dl, Tmp1, Tmp2, LD->getPointerInfo(), 11921e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isVolatile(), LD->isNonTemporal(), 11931e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->getAlignment()); 1194bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp3 = LegalizeOp(DAG.getNode(ISD::BITCAST, dl, VT, Tmp1)); 119541f6cbbeb21d7d4376b8c0302b9766c3e43be5f2Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1196466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1197f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 1198466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1199fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Since loads produce two values, make sure to remember that we 1200466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // legalized both of them. 1201475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp3); 1202475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp4); 120399a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Op.getResNo() ? Tmp4 : Tmp3; 12043d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } 1205bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 12063d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner EVT SrcVT = LD->getMemoryVT(); 12073d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned SrcWidth = SrcVT.getSizeInBits(); 12083d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned Alignment = LD->getAlignment(); 12093d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner bool isVolatile = LD->isVolatile(); 12103d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner bool isNonTemporal = LD->isNonTemporal(); 12113d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12123d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (SrcWidth != SrcVT.getStoreSizeInBits() && 12133d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Some targets pretend to have an i1 loading operation, and actually 12143d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // load an i8. This trick is correct for ZEXTLOAD because the top 7 12153d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // bits are guaranteed to be zero; it helps the optimizers understand 12163d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // that these bits are zero. It is also useful for EXTLOAD, since it 12173d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // tells the optimizers that those bits are undefined. It would be 12183d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // nice to have an effective generic way of getting these benefits... 12193d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Until such a way is found, don't insist on promoting i1 here. 12203d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner (SrcVT != MVT::i1 || 12213d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner TLI.getLoadExtAction(ExtType, MVT::i1) == TargetLowering::Promote)) { 12223d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Promote to a byte-sized load if not loading an integral number of 12233d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // bytes. For example, promote EXTLOAD:i20 -> EXTLOAD:i24. 12243d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned NewWidth = SrcVT.getStoreSizeInBits(); 12253d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner EVT NVT = EVT::getIntegerVT(*DAG.getContext(), NewWidth); 12263d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner SDValue Ch; 12273d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12283d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // The extra bits are guaranteed to be zero, since we stored them that 12293d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // way. A zext load from NVT thus automatically gives zext from SrcVT. 12303d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12313d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ISD::LoadExtType NewExtType = 12323d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ExtType == ISD::ZEXTLOAD ? ISD::ZEXTLOAD : ISD::EXTLOAD; 12333d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 1234a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Result = DAG.getExtLoad(NewExtType, dl, Node->getValueType(0), 12353d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1, Tmp2, LD->getPointerInfo(), 12363d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner NVT, isVolatile, isNonTemporal, Alignment); 12373d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12383d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Ch = Result.getValue(1); // The chain. 12393d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12403d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (ExtType == ISD::SEXTLOAD) 12413d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Having the top bits zero doesn't help when sign extending. 12423d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 12433d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result.getValueType(), 12443d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result, DAG.getValueType(SrcVT)); 12453d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner else if (ExtType == ISD::ZEXTLOAD || NVT == Result.getValueType()) 12463d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // All the top bits are guaranteed to be zero - inform the optimizers. 12473d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getNode(ISD::AssertZext, dl, 12483d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result.getValueType(), Result, 12493d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG.getValueType(SrcVT)); 12503d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12513d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(Result); 12523d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Ch); 12533d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } else if (SrcWidth & (SrcWidth - 1)) { 12543d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // If not loading a power-of-2 number of bits, expand as two loads. 12553d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(!SrcVT.isVector() && "Unsupported extload!"); 12563d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned RoundWidth = 1 << Log2_32(SrcWidth); 12573d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(RoundWidth < SrcWidth); 12583d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned ExtraWidth = SrcWidth - RoundWidth; 12593d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(ExtraWidth < RoundWidth); 12603d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 12613d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner "Load size not an integral number of bytes!"); 12623d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 12633d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 12643d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner SDValue Lo, Hi, Ch; 12653d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned IncrementSize; 12663d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12673d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (TLI.isLittleEndian()) { 12683d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // EXTLOAD:i24 -> ZEXTLOAD:i16 | (shl EXTLOAD@+2:i8, 16) 12693d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Load the bottom RoundWidth bits. 1270a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, Node->getValueType(0), 12713d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1, Tmp2, 12723d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo(), RoundVT, isVolatile, 12733d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner isNonTemporal, Alignment); 12743d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12753d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Load the remaining ExtraWidth bits. 12763d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner IncrementSize = RoundWidth / 8; 12773d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 12783d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG.getIntPtrConstant(IncrementSize)); 1279a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2, 12803d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 12813d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ExtraVT, isVolatile, isNonTemporal, 12823d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MinAlign(Alignment, IncrementSize)); 12833d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12843d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Build a factor node to remember that this load is independent of 12853d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // the other one. 12863d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 12873d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi.getValue(1)); 12883d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12893d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Move the top bits to the right place. 12903d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 129195771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson DAG.getConstant(RoundWidth, 129295771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(Hi.getValueType()))); 12933d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12943d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Join the hi and lo parts. 12953d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 12963d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } else { 12973d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Big endian - avoid unaligned loads. 12983d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // EXTLOAD:i24 -> (shl EXTLOAD:i16, 8) | ZEXTLOAD@+2:i8 12993d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Load the top RoundWidth bits. 1300a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2, 13013d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo(), RoundVT, isVolatile, 13023d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner isNonTemporal, Alignment); 13033d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 13043d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Load the remaining ExtraWidth bits. 13053d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner IncrementSize = RoundWidth / 8; 13063d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 13073d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG.getIntPtrConstant(IncrementSize)); 13083d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Lo = DAG.getExtLoad(ISD::ZEXTLOAD, 1309a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings dl, Node->getValueType(0), Tmp1, Tmp2, 13103d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 13113d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ExtraVT, isVolatile, isNonTemporal, 13123d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MinAlign(Alignment, IncrementSize)); 13133d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 13143d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Build a factor node to remember that this load is independent of 13153d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // the other one. 13163d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 13173d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi.getValue(1)); 13183d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 13193d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Move the top bits to the right place. 13203d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 132195771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson DAG.getConstant(ExtraWidth, 132295771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(Hi.getValueType()))); 13233d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 13243d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Join the hi and lo parts. 13253d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 13263d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } 1327f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 13283d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(Result); 13293d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Ch); 13303d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } else { 13313d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner switch (TLI.getLoadExtAction(ExtType, SrcVT)) { 13323d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner default: assert(0 && "This action is not supported yet!"); 13333d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case TargetLowering::Custom: 13343d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner isCustom = true; 13353d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // FALLTHROUGH 13363d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case TargetLowering::Legal: 13373d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 13383d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1, Tmp2, LD->getOffset()), 13393d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result.getResNo()); 13403d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = Result.getValue(0); 13413d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = Result.getValue(1); 13423d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 13433d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (isCustom) { 13443d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp3 = TLI.LowerOperation(Result, DAG); 13453d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (Tmp3.getNode()) { 13463d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(Tmp3); 13473d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Tmp3.getValue(1)); 13483d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } 1349f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 13503d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // If this is an unaligned load and the target doesn't support it, 13513d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // expand it. 13523d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) { 13533d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner const Type *Ty = 13543d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getMemoryVT().getTypeForEVT(*DAG.getContext()); 13553d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned ABIAlignment = 13563d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner TLI.getTargetData()->getABITypeAlignment(Ty); 13573d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (LD->getAlignment() < ABIAlignment){ 13583d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 13593d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG, TLI); 13603d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = Result.getOperand(0); 13613d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = Result.getOperand(1); 13623d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(Tmp1); 13633d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Tmp2); 1364f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1365f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 13663d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } 13673d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner break; 13683d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case TargetLowering::Expand: 13693d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (!TLI.isLoadExtLegal(ISD::EXTLOAD, SrcVT) && isTypeLegal(SrcVT)) { 13703d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner SDValue Load = DAG.getLoad(SrcVT, dl, Tmp1, Tmp2, 13713d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo(), 13723d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->isVolatile(), LD->isNonTemporal(), 13733d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getAlignment()); 13743d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned ExtendOp; 13753d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner switch (ExtType) { 13763d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case ISD::EXTLOAD: 13773d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ExtendOp = (SrcVT.isFloatingPoint() ? 13783d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ISD::FP_EXTEND : ISD::ANY_EXTEND); 1379f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 13803d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case ISD::SEXTLOAD: ExtendOp = ISD::SIGN_EXTEND; break; 13813d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case ISD::ZEXTLOAD: ExtendOp = ISD::ZERO_EXTEND; break; 13823d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner default: llvm_unreachable("Unexpected extend load type!"); 1383f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 13843d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getNode(ExtendOp, dl, Node->getValueType(0), Load); 13853d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(Result); // Relegalize new nodes. 13863d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Load.getValue(1)); 1387466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1388466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 13893d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // FIXME: This does not work for vectors on most targets. Sign- and 13903d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // zero-extend operations are currently folded into extending loads, 13913d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // whether they are legal or not, and then we end up here without any 13923d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // support for legalizing them. 13933d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(ExtType != ISD::EXTLOAD && 13943d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner "EXTLOAD should always be supported!"); 13953d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Turn the unsupported load into an EXTLOAD followed by an explicit 13963d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // zero/sign extend inreg. 1397a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings Result = DAG.getExtLoad(ISD::EXTLOAD, dl, Node->getValueType(0), 13983d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1, Tmp2, LD->getPointerInfo(), SrcVT, 13993d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->isVolatile(), LD->isNonTemporal(), 14003d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getAlignment()); 14013d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner SDValue ValRes; 14023d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (ExtType == ISD::SEXTLOAD) 14033d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ValRes = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 14043d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result.getValueType(), 14053d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result, DAG.getValueType(SrcVT)); 14063d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner else 1407dd11ea4a372b992775f67b64fb703edf2de0d27bDan Gohman ValRes = DAG.getZeroExtendInReg(Result, dl, SrcVT.getScalarType()); 14083d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(ValRes); // Relegalize new nodes. 14093d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Result.getValue(1)); // Relegalize new nodes. 14103d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner break; 14119d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth } 141201ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 14133d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 14143d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Since loads produce two values, make sure to remember that we legalized 14153d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // both of them. 14163d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner AddLegalizedOperand(SDValue(Node, 0), Tmp1); 14173d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner AddLegalizedOperand(SDValue(Node, 1), Tmp2); 14183d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner return Op.getResNo() ? Tmp2 : Tmp1; 141901ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 1420f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::STORE: { 14218b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng StoreSDNode *ST = cast<StoreSDNode>(Node); 14228b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = LegalizeOp(ST->getChain()); // Legalize the chain. 14238b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp2 = LegalizeOp(ST->getBasePtr()); // Legalize the pointer. 1424d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman unsigned Alignment = ST->getAlignment(); 1425d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman bool isVolatile = ST->isVolatile(); 14261e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = ST->isNonTemporal(); 14278b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 14288b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng if (!ST->isTruncatingStore()) { 14297ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (SDNode *OptStore = OptimizeFloatStore(ST).getNode()) { 14307ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Result = SDValue(OptStore, 0); 14317ef3d178660b82d1571757e49f44b004d772a116Eli Friedman break; 1432d93d46ee7e0a0e539d42139b85c71b2b8c3968feChris Lattner } 1433fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1434957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman { 14358b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp3 = LegalizeOp(ST->getValue()); 1436027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 1437027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Tmp1, Tmp3, Tmp2, 1438027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman ST->getOffset()), 1439027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result.getResNo()); 14408b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 1441e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp3.getValueType(); 14428b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng switch (TLI.getOperationAction(ISD::STORE, VT)) { 144335a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 1444f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1445f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned store and the target doesn't support it, 1446f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1447bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) { 1448e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext()); 14496e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach unsigned ABIAlignment= TLI.getTargetData()->getABITypeAlignment(Ty); 1450f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (ST->getAlignment() < ABIAlignment) 1451e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), 1452e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng DAG, TLI); 1453f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1454f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 14558b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Custom: 14568b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = TLI.LowerOperation(Result, DAG); 1457ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) Result = Tmp1; 14588b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 14598b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Promote: 146083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Unknown legal promote case!"); 1461bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp3 = DAG.getNode(ISD::BITCAST, dl, 14628b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng TLI.getTypeToPromoteTo(ISD::STORE, VT), Tmp3); 1463ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, 1464da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo(), isVolatile, 14651e559443a17d1b335f697551c6263ba60d5dd827David Greene isNonTemporal, Alignment); 14668b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 14678b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 14682efce0a589e2a688a1a06b5dc2ed0db32ae79924Chris Lattner break; 1469f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 14708b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } else { 1471957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman Tmp3 = LegalizeOp(ST->getValue()); 14727e857201f387d004571e6058e2ea709163500f38Duncan Sands 1473e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT StVT = ST->getMemoryVT(); 147483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned StWidth = StVT.getSizeInBits(); 14757e857201f387d004571e6058e2ea709163500f38Duncan Sands 147683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (StWidth != StVT.getStoreSizeInBits()) { 14777e857201f387d004571e6058e2ea709163500f38Duncan Sands // Promote to a byte-sized store with upper bits zero if not 14787e857201f387d004571e6058e2ea709163500f38Duncan Sands // storing an integral number of bytes. For example, promote 14797e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i1 X -> TRUNCSTORE:i8 (and X, 1) 1480adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT NVT = EVT::getIntegerVT(*DAG.getContext(), 1481adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng StVT.getStoreSizeInBits()); 1482ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getZeroExtendInReg(Tmp3, dl, StVT); 1483da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Result = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 1484da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner NVT, isVolatile, isNonTemporal, Alignment); 14857e857201f387d004571e6058e2ea709163500f38Duncan Sands } else if (StWidth & (StWidth - 1)) { 14867e857201f387d004571e6058e2ea709163500f38Duncan Sands // If not storing a power-of-2 number of bits, expand as two stores. 1487bceddbdc919fc2ca7bc8c3911586ba93367686f0Ken Dyck assert(!StVT.isVector() && "Unsupported truncstore!"); 14887e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned RoundWidth = 1 << Log2_32(StWidth); 14897e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(RoundWidth < StWidth); 14907e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned ExtraWidth = StWidth - RoundWidth; 14917e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(ExtraWidth < RoundWidth); 14927e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 14937e857201f387d004571e6058e2ea709163500f38Duncan Sands "Store size not an integral number of bytes!"); 149423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 149523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 1496475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 14977e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned IncrementSize; 14987e857201f387d004571e6058e2ea709163500f38Duncan Sands 14997e857201f387d004571e6058e2ea709163500f38Duncan Sands if (TLI.isLittleEndian()) { 15007e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 X, TRUNCSTORE@+2:i8 (srl X, 16) 15017e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the bottom RoundWidth bits. 1502da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 1503da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner RoundVT, 15041e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, Alignment); 15057e857201f387d004571e6058e2ea709163500f38Duncan Sands 15067e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 15077e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1508ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 15097e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1510ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 151195771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson DAG.getConstant(RoundWidth, 151295771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(Tmp3.getValueType()))); 1513da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, 1514da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo().getWithOffset(IncrementSize), 1515da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ExtraVT, isVolatile, isNonTemporal, 15167e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 15177e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 15187e857201f387d004571e6058e2ea709163500f38Duncan Sands // Big endian - avoid unaligned stores. 15197e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 (srl X, 8), TRUNCSTORE@+2:i8 X 15207e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the top RoundWidth bits. 1521ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 152295771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson DAG.getConstant(ExtraWidth, 152395771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(Tmp3.getValueType()))); 1524da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getPointerInfo(), 1525da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner RoundVT, isVolatile, isNonTemporal, Alignment); 15267e857201f387d004571e6058e2ea709163500f38Duncan Sands 15277e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 15287e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1529ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 15307e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1531da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, 1532da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo().getWithOffset(IncrementSize), 1533da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ExtraVT, isVolatile, isNonTemporal, 15347e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 15357e857201f387d004571e6058e2ea709163500f38Duncan Sands } 1536c7029805ef35ce9805931067b841e6af11db382eChris Lattner 15377e857201f387d004571e6058e2ea709163500f38Duncan Sands // The order of the stores doesn't matter. 1538825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Result = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 15397e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 15407e857201f387d004571e6058e2ea709163500f38Duncan Sands if (Tmp1 != ST->getChain() || Tmp3 != ST->getValue() || 15417e857201f387d004571e6058e2ea709163500f38Duncan Sands Tmp2 != ST->getBasePtr()) 1542027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 1543027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Tmp1, Tmp3, Tmp2, 1544027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman ST->getOffset()), 1545027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result.getResNo()); 15467e857201f387d004571e6058e2ea709163500f38Duncan Sands 15477e857201f387d004571e6058e2ea709163500f38Duncan Sands switch (TLI.getTruncStoreAction(ST->getValue().getValueType(), StVT)) { 154835a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 15497e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Legal: 15507e857201f387d004571e6058e2ea709163500f38Duncan Sands // If this is an unaligned store and the target doesn't support it, 15517e857201f387d004571e6058e2ea709163500f38Duncan Sands // expand it. 1552bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) { 1553e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext()); 15546e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach unsigned ABIAlignment= TLI.getTargetData()->getABITypeAlignment(Ty); 15557e857201f387d004571e6058e2ea709163500f38Duncan Sands if (ST->getAlignment() < ABIAlignment) 1556e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), 1557e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng DAG, TLI); 15587e857201f387d004571e6058e2ea709163500f38Duncan Sands } 15597e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 15607e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Custom: 15617e857201f387d004571e6058e2ea709163500f38Duncan Sands Result = TLI.LowerOperation(Result, DAG); 15627e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 15637e857201f387d004571e6058e2ea709163500f38Duncan Sands case Expand: 15647e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i16 i32 -> STORE i16 15657e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(isTypeLegal(StVT) && "Do not know how to expand this store!"); 1566ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getNode(ISD::TRUNCATE, dl, StVT, Tmp3); 1567da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 1568da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner isVolatile, isNonTemporal, Alignment); 15697e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 1570f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 15718b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 15723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 15733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 1574f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 157545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 15764ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner assert(Result.getValueType() == Op.getValueType() && 15774ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner "Bad legalization!"); 1578fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1579456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner // Make sure that the generated code is itself legal. 1580456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner if (Result != Op) 1581456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner Result = LegalizeOp(Result); 15823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 158345982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 158445982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 158545982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner AddLegalizedOperand(Op, Result); 15863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return Result; 15873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 15883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 15893d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli FriedmanSDValue SelectionDAGLegalize::ExpandExtractFromVectorThroughStack(SDValue Op) { 15903d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Vec = Op.getOperand(0); 15913d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Idx = Op.getOperand(1); 15923d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DebugLoc dl = Op.getDebugLoc(); 15933d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Store the value to a temporary stack slot, then LOAD the returned part. 15943d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue StackPtr = DAG.CreateStackTemporary(Vec.getValueType()); 15956229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Vec, StackPtr, 15966229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner MachinePointerInfo(), false, false, 0); 15973d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15983d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Add the offset to the index. 1599aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned EltSize = 1600aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman Vec.getValueType().getVectorElementType().getSizeInBits()/8; 16013d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::MUL, dl, Idx.getValueType(), Idx, 16023d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DAG.getConstant(EltSize, Idx.getValueType())); 16033d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 16043d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman if (Idx.getValueType().bitsGT(TLI.getPointerTy())) 16053d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::TRUNCATE, dl, TLI.getPointerTy(), Idx); 16063d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman else 16073d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::ZERO_EXTEND, dl, TLI.getPointerTy(), Idx); 16083d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 16093d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman StackPtr = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, StackPtr); 16103d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 1611c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman if (Op.getValueType().isVector()) 1612ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner return DAG.getLoad(Op.getValueType(), dl, Ch, StackPtr,MachinePointerInfo(), 16131e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 1614a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings return DAG.getExtLoad(ISD::EXTLOAD, dl, Op.getValueType(), Ch, StackPtr, 16153d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MachinePointerInfo(), 16163d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Vec.getValueType().getVectorElementType(), 16173d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner false, false, 0); 16183d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman} 16193d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 1620cfe33c46aa50f04adb0431243e7d25f79b719ac6David GreeneSDValue SelectionDAGLegalize::ExpandInsertToVectorThroughStack(SDValue Op) { 1621cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene assert(Op.getValueType().isVector() && "Non-vector insert subvector!"); 1622cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1623cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene SDValue Vec = Op.getOperand(0); 1624cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene SDValue Part = Op.getOperand(1); 1625cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene SDValue Idx = Op.getOperand(2); 1626cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene DebugLoc dl = Op.getDebugLoc(); 1627cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1628cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene // Store the value to a temporary stack slot, then LOAD the returned part. 1629cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1630cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene SDValue StackPtr = DAG.CreateStackTemporary(Vec.getValueType()); 1631cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene int FI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex(); 1632cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene MachinePointerInfo PtrInfo = MachinePointerInfo::getFixedStack(FI); 1633cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1634cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene // First store the whole vector. 1635cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Vec, StackPtr, PtrInfo, 1636cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene false, false, 0); 1637cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1638cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene // Then store the inserted part. 1639cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1640cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene // Add the offset to the index. 1641cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene unsigned EltSize = 1642cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene Vec.getValueType().getVectorElementType().getSizeInBits()/8; 1643cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1644cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene Idx = DAG.getNode(ISD::MUL, dl, Idx.getValueType(), Idx, 1645cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene DAG.getConstant(EltSize, Idx.getValueType())); 1646cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1647cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene if (Idx.getValueType().bitsGT(TLI.getPointerTy())) 1648cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene Idx = DAG.getNode(ISD::TRUNCATE, dl, TLI.getPointerTy(), Idx); 1649cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene else 1650cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene Idx = DAG.getNode(ISD::ZERO_EXTEND, dl, TLI.getPointerTy(), Idx); 1651cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1652cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene SDValue SubStackPtr = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, 1653cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene StackPtr); 1654cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1655cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene // Store the subvector. 1656cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene Ch = DAG.getStore(DAG.getEntryNode(), dl, Part, SubStackPtr, 1657cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene MachinePointerInfo(), false, false, 0); 1658cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 1659cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene // Finally, load the updated vector. 1660cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene return DAG.getLoad(Op.getValueType(), dl, Ch, StackPtr, PtrInfo, 1661cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene false, false, 0); 1662cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene} 1663cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene 16647ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::ExpandVectorBuildThroughStack(SDNode* Node) { 16657ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We can't handle this case efficiently. Allocate a sufficiently 16667ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // aligned object on the stack, store each element into it, then load 16677ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // the result as a vector. 16687ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Create the stack frame object. 1669e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 16705b8bce11d60694a651965cf019b9cb5d84ed3b90Dale Johannesen EVT EltVT = VT.getVectorElementType(); 16717ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = Node->getDebugLoc(); 16727ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue FIPtr = DAG.CreateStackTemporary(VT); 1673ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int FI = cast<FrameIndexSDNode>(FIPtr.getNode())->getIndex(); 1674ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo PtrInfo = MachinePointerInfo::getFixedStack(FI); 16757ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16767ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Emit a store of each element to the stack slot. 16777ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SmallVector<SDValue, 8> Stores; 1678aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned TypeByteSize = EltVT.getSizeInBits() / 8; 16797ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Store (in the right endianness) the elements to memory. 16807ef3d178660b82d1571757e49f44b004d772a116Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 16817ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Ignore undef elements. 16827ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (Node->getOperand(i).getOpcode() == ISD::UNDEF) continue; 16837ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16847ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Offset = TypeByteSize*i; 16857ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16867ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Idx = DAG.getConstant(Offset, FIPtr.getValueType()); 16877ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Idx = DAG.getNode(ISD::ADD, dl, FIPtr.getValueType(), FIPtr, Idx); 16887ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16899949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman // If the destination vector element type is narrower than the source 16909949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman // element type, only store the bits necessary. 16919949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman if (EltVT.bitsLT(Node->getOperand(i).getValueType().getScalarType())) { 16925b8bce11d60694a651965cf019b9cb5d84ed3b90Dale Johannesen Stores.push_back(DAG.getTruncStore(DAG.getEntryNode(), dl, 1693ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Node->getOperand(i), Idx, 1694ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner PtrInfo.getWithOffset(Offset), 16951e559443a17d1b335f697551c6263ba60d5dd827David Greene EltVT, false, false, 0)); 1696eb38ebf15c326a5bb45ca9da6329cdf19ad6df95Mon P Wang } else 16976e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach Stores.push_back(DAG.getStore(DAG.getEntryNode(), dl, 1698ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Node->getOperand(i), Idx, 1699ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner PtrInfo.getWithOffset(Offset), 17001e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0)); 17017ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 17027ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 17037ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue StoreChain; 17047ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (!Stores.empty()) // Not all undef elements? 1705825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson StoreChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 17067ef3d178660b82d1571757e49f44b004d772a116Eli Friedman &Stores[0], Stores.size()); 17077ef3d178660b82d1571757e49f44b004d772a116Eli Friedman else 17087ef3d178660b82d1571757e49f44b004d772a116Eli Friedman StoreChain = DAG.getEntryNode(); 17097ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 17107ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Result is a load from the stack slot. 1711ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner return DAG.getLoad(VT, dl, StoreChain, FIPtr, PtrInfo, false, false, 0); 17127ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 17137ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 17144bc8c718218159fe410462f6e3670e7cb76c0c04Eli FriedmanSDValue SelectionDAGLegalize::ExpandFCOPYSIGN(SDNode* Node) { 17154bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 17164bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = Node->getOperand(0); 17174bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = Node->getOperand(1); 17185d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands 17195d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Get the sign bit of the RHS. First obtain a value that has the same 17205d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // sign as the sign bit, i.e. negative if and only if the sign bit is 1. 17214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignBit; 17225d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands EVT FloatVT = Tmp2.getValueType(); 17235d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands EVT IVT = EVT::getIntegerVT(*DAG.getContext(), FloatVT.getSizeInBits()); 17244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (isTypeLegal(IVT)) { 17255d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Convert to an integer with the same sign bit. 1726bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SignBit = DAG.getNode(ISD::BITCAST, dl, IVT, Tmp2); 17274bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else { 17285d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Store the float to memory, then load the sign part out as an integer. 17295d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands MVT LoadTy = TLI.getPointerTy(); 17305d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // First create a temporary that is aligned for both the load and store. 17315d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SDValue StackPtr = DAG.CreateStackTemporary(FloatVT, LoadTy); 17325d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Then store the float to it. 17334bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Ch = 17346229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner DAG.getStore(DAG.getEntryNode(), dl, Tmp2, StackPtr, MachinePointerInfo(), 17351e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 17365d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands if (TLI.isBigEndian()) { 17375d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands assert(FloatVT.isByteSized() && "Unsupported floating point type!"); 17385d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Load out a legal integer with the same sign bit as the float. 1739ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SignBit = DAG.getLoad(LoadTy, dl, Ch, StackPtr, MachinePointerInfo(), 1740ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, 0); 17415d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands } else { // Little endian 17425d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SDValue LoadPtr = StackPtr; 17435d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // The float may be wider than the integer we are going to load. Advance 17445d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // the pointer so that the loaded integer will contain the sign bit. 17455d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands unsigned Strides = (FloatVT.getSizeInBits()-1)/LoadTy.getSizeInBits(); 17465d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands unsigned ByteOffset = (Strides * LoadTy.getSizeInBits()) / 8; 17475d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands LoadPtr = DAG.getNode(ISD::ADD, dl, LoadPtr.getValueType(), 17485d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands LoadPtr, DAG.getIntPtrConstant(ByteOffset)); 17495d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Load a legal integer containing the sign bit. 1750ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SignBit = DAG.getLoad(LoadTy, dl, Ch, LoadPtr, MachinePointerInfo(), 1751ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, 0); 17525d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Move the sign bit to the top bit of the loaded integer. 17535d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands unsigned BitShift = LoadTy.getSizeInBits() - 17545d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands (FloatVT.getSizeInBits() - 8 * ByteOffset); 17555d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands assert(BitShift < LoadTy.getSizeInBits() && "Pointer advanced wrong?"); 17565d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands if (BitShift) 17575d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SignBit = DAG.getNode(ISD::SHL, dl, LoadTy, SignBit, 175895771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson DAG.getConstant(BitShift, 175995771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(SignBit.getValueType()))); 17605d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands } 17614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 17625d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Now get the sign bit proper, by seeing whether the value is negative. 17635d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SignBit = DAG.getSetCC(dl, TLI.getSetCCResultType(SignBit.getValueType()), 17645d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SignBit, DAG.getConstant(0, SignBit.getValueType()), 17655d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands ISD::SETLT); 17664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Get the absolute value of the result. 17674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue AbsVal = DAG.getNode(ISD::FABS, dl, Tmp1.getValueType(), Tmp1); 17684bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Select between the nabs and abs value based on the sign bit of 17694bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // the input. 17704bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getNode(ISD::SELECT, dl, AbsVal.getValueType(), SignBit, 17714bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getNode(ISD::FNEG, dl, AbsVal.getValueType(), AbsVal), 17724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman AbsVal); 17734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 17744bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 17754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedmanvoid SelectionDAGLegalize::ExpandDYNAMIC_STACKALLOC(SDNode* Node, 17764bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results) { 17774bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned SPReg = TLI.getStackPointerRegisterToSaveRestore(); 17784bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert(SPReg && "Target cannot require DYNAMIC_STACKALLOC expansion and" 17794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman " not tell us which reg is the stack pointer!"); 17804bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 1781e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 17824bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = SDValue(Node, 0); 17834bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = SDValue(Node, 1); 17844bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp3 = Node->getOperand(2); 17854bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Tmp1.getOperand(0); 17864bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 17874bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Chain the dynamic stack allocation so that it doesn't modify the stack 17884bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // pointer when other instructions are using the stack. 17894bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(0, true)); 17904bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 17914bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Size = Tmp2.getOperand(1); 17924bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SP = DAG.getCopyFromReg(Chain, dl, SPReg, VT); 17934bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = SP.getValue(1); 17944bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Align = cast<ConstantSDNode>(Tmp3)->getZExtValue(); 179516c29b5f285f375be53dabaa73e3e91107485fe4Anton Korobeynikov unsigned StackAlign = TM.getFrameLowering()->getStackAlignment(); 17964bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Align > StackAlign) 17974bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SP = DAG.getNode(ISD::AND, dl, VT, SP, 17984bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getConstant(-(uint64_t)Align, VT)); 17994bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, SP, Size); // Value 18004bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCopyToReg(Chain, dl, SPReg, Tmp1); // Output chain 18014bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 18024bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp2 = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(0, true), 18034bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getIntPtrConstant(0, true), SDValue()); 18044bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 18054bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 18064bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp2); 18074bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 18084bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 18097f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// LegalizeSetCCCondCode - Legalize a SETCC with given LHS and RHS and 1810f77fc92b03efe455008474894d217282e2a03cadDan Gohman/// condition code CC on the current target. This routine expands SETCC with 18117f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// illegal condition code into AND / OR of multiple SETCC values. 1812e50ed30282bb5b4a9ed952580523f2dda16215acOwen Andersonvoid SelectionDAGLegalize::LegalizeSetCCCondCode(EVT VT, 18137f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng SDValue &LHS, SDValue &RHS, 1814bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue &CC, 1815775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DebugLoc dl) { 1816e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = LHS.getValueType(); 18177f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CCCode = cast<CondCodeSDNode>(CC)->get(); 18187f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (TLI.getCondCodeAction(CCCode, OpVT)) { 181935a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unknown condition code action!"); 18207f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Legal: 18217f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // Nothing to do. 18227f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 18237f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Expand: { 18247f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CC1 = ISD::SETCC_INVALID, CC2 = ISD::SETCC_INVALID; 18257f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng unsigned Opc = 0; 18267f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (CCCode) { 182735a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Don't know how to expand this condition!"); 1828e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETO; Opc = ISD::AND; break; 1829e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGT: CC1 = ISD::SETGT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1830e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGE: CC1 = ISD::SETGE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1831e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLT: CC1 = ISD::SETLT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1832e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLE: CC1 = ISD::SETLE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1833e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETONE: CC1 = ISD::SETNE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1834e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1835e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGT: CC1 = ISD::SETGT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1836e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGE: CC1 = ISD::SETGE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1837e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULT: CC1 = ISD::SETLT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1838e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULE: CC1 = ISD::SETLE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1839e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUNE: CC1 = ISD::SETNE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 18407f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // FIXME: Implement more expansions. 18417f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 18427f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 1843bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC1 = DAG.getSetCC(dl, VT, LHS, RHS, CC1); 1844bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC2 = DAG.getSetCC(dl, VT, LHS, RHS, CC2); 1845bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen LHS = DAG.getNode(Opc, dl, VT, SetCC1, SetCC2); 18467f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng RHS = SDValue(); 18477f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng CC = SDValue(); 18487f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 18497f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 18507f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 18517f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng} 18527f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 18531401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// EmitStackConvert - Emit a store/load combination to the stack. This stores 18541401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// SrcOp to a stack slot of type SlotVT, truncating it if needed. It then does 18551401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// a load from the stack slot to DestVT, extending it if needed. 18561401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// The resultant code need not be legal. 1857475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::EmitStackConvert(SDValue SrcOp, 1858e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SlotVT, 1859e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 18608a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 186135481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Create the stack frame object. 1862ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson unsigned SrcAlign = 1863ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getTargetData()->getPrefTypeAlignment(SrcOp.getValueType(). 186423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson getTypeForEVT(*DAG.getContext())); 1865475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FIPtr = DAG.CreateStackTemporary(SlotVT, SrcAlign); 1866fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1867ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(FIPtr); 1868ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = StackPtrFI->getIndex(); 1869da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner MachinePointerInfo PtrInfo = MachinePointerInfo::getFixedStack(SPFI); 1870ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 187183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SrcSize = SrcOp.getValueType().getSizeInBits(); 187283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SlotSize = SlotVT.getSizeInBits(); 187383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned DestSize = DestVT.getSizeInBits(); 1874adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng const Type *DestType = DestVT.getTypeForEVT(*DAG.getContext()); 1875adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng unsigned DestAlign = TLI.getTargetData()->getPrefTypeAlignment(DestType); 1876fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18771401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // Emit a store to the stack slot. Use a truncstore if the input value is 18781401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // later than DestVT. 1879475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store; 1880ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 18811401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SrcSize > SlotSize) 18828a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getTruncStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 1883da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner PtrInfo, SlotVT, false, false, SrcAlign); 18841401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner else { 18851401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SrcSize == SlotSize && "Invalid store"); 18868a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 1887da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner PtrInfo, false, false, SrcAlign); 18881401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner } 1889fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 189035481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Result is a load from the stack slot. 18911401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SlotSize == DestSize) 1892da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner return DAG.getLoad(DestVT, dl, Store, FIPtr, PtrInfo, 1893ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, DestAlign); 1894fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18951401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SlotSize < DestSize && "Unknown extension!"); 1896a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings return DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, Store, FIPtr, 1897da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner PtrInfo, SlotVT, false, false, DestAlign); 189835481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner} 189935481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner 1900475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandSCALAR_TO_VECTOR(SDNode *Node) { 19018a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl = Node->getDebugLoc(); 19024352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // Create a vector sized/aligned stack slot, store the value to element #0, 19034352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // then load the whole vector back out. 1904475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(Node->getValueType(0)); 190569de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 1906ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(StackPtr); 1907ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = StackPtrFI->getIndex(); 1908ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 1909b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands SDValue Ch = DAG.getTruncStore(DAG.getEntryNode(), dl, Node->getOperand(0), 1910b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands StackPtr, 191185ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getFixedStack(SPFI), 19121e559443a17d1b335f697551c6263ba60d5dd827David Greene Node->getValueType(0).getVectorElementType(), 19131e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 19148a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(Node->getValueType(0), dl, Ch, StackPtr, 191585ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getFixedStack(SPFI), 19161e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 19174352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 19184352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 19194352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 1920ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner/// ExpandBUILD_VECTOR - Expand a BUILD_VECTOR node on targets that don't 192107a96765daedf180a7102d39fe56c499878312b7Dan Gohman/// support the operation, but do support the resultant vector type. 1922475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandBUILD_VECTOR(SDNode *Node) { 192326cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson unsigned NumElems = Node->getNumOperands(); 19247a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Value1, Value2; 192526cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson DebugLoc dl = Node->getDebugLoc(); 1926e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1927e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(0).getValueType(); 1928e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 1929fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1930fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // If the only non-undef value is the low element, turn this into a 193187100e0b83b808757bf44dabecd1d1048255d1adChris Lattner // SCALAR_TO_VECTOR node. If this is { X, X, X, X }, determine X. 1932ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner bool isOnlyLowElement = true; 19337a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman bool MoreThanTwoValues = false; 19342eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner bool isConstant = true; 19357a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 1936475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue V = Node->getOperand(i); 19377a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 19387a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 19397a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (i > 0) 1940ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner isOnlyLowElement = false; 19417a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!isa<ConstantFPSDNode>(V) && !isa<ConstantSDNode>(V)) 19422eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner isConstant = false; 19437a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 19447a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) { 19457a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value1 = V; 19467a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (!Value2.getNode()) { 19477a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V != Value1) 19487a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value2 = V; 19497a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (V != Value1 && V != Value2) { 19507a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman MoreThanTwoValues = true; 19517a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 1952ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1953fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 19547a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) 19557a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getUNDEF(VT); 19567a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 19577a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (isOnlyLowElement) 195826cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson return DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Node->getOperand(0)); 1959fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 19602eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // If all elements are constants, create a load from the constant pool. 1961ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner if (isConstant) { 1962ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner std::vector<Constant*> CV; 1963033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng for (unsigned i = 0, e = NumElems; i != e; ++i) { 1964fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel if (ConstantFPSDNode *V = 1965ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner dyn_cast<ConstantFPSDNode>(Node->getOperand(i))) { 19664fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman CV.push_back(const_cast<ConstantFP *>(V->getConstantFPValue())); 1967fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel } else if (ConstantSDNode *V = 1968ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson dyn_cast<ConstantSDNode>(Node->getOperand(i))) { 19699a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen if (OpVT==EltVT) 19709a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CV.push_back(const_cast<ConstantInt *>(V->getConstantIntValue())); 19719a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen else { 19729a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // If OpVT and EltVT don't match, EltVT is not legal and the 19739a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // element values have been promoted/truncated earlier. Undo this; 19749a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // we don't want a v16i8 to become a v16i32 for example. 19759a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen const ConstantInt *CI = V->getConstantIntValue(); 19769a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CV.push_back(ConstantInt::get(EltVT.getTypeForEVT(*DAG.getContext()), 19779a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CI->getZExtValue())); 19789a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen } 1979ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } else { 1980ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner assert(Node->getOperand(i).getOpcode() == ISD::UNDEF); 19819a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen const Type *OpNTy = EltVT.getTypeForEVT(*DAG.getContext()); 19829e9a0d5fc26878e51a58a8b57900fcbf952c2691Owen Anderson CV.push_back(UndefValue::get(OpNTy)); 1983ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1984ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1985af7ec975870f92245f1f1484ac80a1e2db6a0afaOwen Anderson Constant *CP = ConstantVector::get(CV); 1986475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(CP, TLI.getPointerTy()); 19871606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 19888a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(VT, dl, DAG.getEntryNode(), CPIdx, 198985ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getConstantPool(), 19901e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, Alignment); 1991ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1992fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 19937a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!MoreThanTwoValues) { 19947a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SmallVector<int, 8> ShuffleVec(NumElems, -1); 19957a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 19967a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue V = Node->getOperand(i); 19977a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 19987a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 19997a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman ShuffleVec[i] = V == Value1 ? 0 : NumElems; 20007a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 20017a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (TLI.isShuffleMaskLegal(ShuffleVec, Node->getValueType(0))) { 20022eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Get the splatted value into the low element of a vector register. 20037a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec1 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value1); 20047a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec2; 20057a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (Value2.getNode()) 20067a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value2); 20077a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman else 20087a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getUNDEF(VT); 2009fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 20102eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Return shuffle(LowValVec, undef, <0,0,0,0>) 20117a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getVectorShuffle(VT, dl, Vec1, Vec2, ShuffleVec.data()); 2012033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 2013033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 2014fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 20157ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, we can't handle this case efficiently. 20167ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return ExpandVectorBuildThroughStack(Node); 2017ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner} 2018ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner 201977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// ExpandLibCall - Expand a node into a call to a libcall. If the result value 202077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// does not fit into a register, return the lo part and set the hi part to the 202177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// by-reg argument. If it does fit into a single register, return the result 202277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// and leave the Hi part unset. 2023475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, 202447b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman bool isSigned) { 2025fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // The input chain to this libcall is the entry node of the function. 20266831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalizing the call will automatically add the previous call to the 20276831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // dependence. 2028475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InChain = DAG.getEntryNode(); 2029fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 203077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 203147857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer TargetLowering::ArgListEntry Entry; 203277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 2033e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ArgVT = Node->getOperand(i).getValueType(); 203423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext()); 2035fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Entry.Node = Node->getOperand(i); Entry.Ty = ArgTy; 2036d0b82b301d700217a716526f9329bb031e0d6578Anton Korobeynikov Entry.isSExt = isSigned; 203700fee65fd21f9615d1a604b8b7d42cd16a3f6b47Duncan Sands Entry.isZExt = !isSigned; 203847857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer Args.push_back(Entry); 203977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 2040056292fd738924f3f7703725d8f630983794b5a5Bill Wendling SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 20410c39719bfc7d0b3e61fbd55e1115184a1d5f6ae7Mon P Wang TLI.getPointerTy()); 2042edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 20430d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Splice the libcall in wherever FindInputOutputChains tells us to. 204423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext()); 20453d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng 20463d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng // isTailCall may be true since the callee does not reference caller stack 20473d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng // frame. Check if it's in the right position. 20483d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng bool isTailCall = isInTailCallPosition(DAG, Node, TLI); 2049ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson std::pair<SDValue, SDValue> CallInfo = 205086098bd6a63d2cdf0c9be9ef3151bd2728281fd7Dale Johannesen TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false, 20513d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng 0, TLI.getLibcallCallingConv(LC), isTailCall, 205298ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 205346ada19645c981a0b7932487d163f7582074a4d9Bill Wendling Callee, Args, DAG, Node->getDebugLoc()); 20540d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 20553d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng if (!CallInfo.second.getNode()) 20563d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng // It's a tailcall, return the chain (which is the DAG root). 20573d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng return DAG.getRoot(); 20583d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng 20596831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call sequence, starting with the chain. This will advance 2060fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings // the LastCALLSEQ to the legalized version of the CALLSEQ_END node that 20616831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // was added by LowerCallTo (guaranteeing proper serialization of calls). 20626831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(CallInfo.second); 206374807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman return CallInfo.first; 206422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 206522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2066e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach// ExpandChainLibCall - Expand a node into a call to a libcall. Similar to 2067e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach// ExpandLibCall except that the first operand is the in-chain. 2068e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbachstd::pair<SDValue, SDValue> 2069e03262fcfc09356a0e3ec589041bc2e0248944e9Jim GrosbachSelectionDAGLegalize::ExpandChainLibCall(RTLIB::Libcall LC, 2070e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach SDNode *Node, 2071e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach bool isSigned) { 2072e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach SDValue InChain = Node->getOperand(0); 2073e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2074e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach TargetLowering::ArgListTy Args; 2075e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach TargetLowering::ArgListEntry Entry; 2076e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach for (unsigned i = 1, e = Node->getNumOperands(); i != e; ++i) { 2077e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach EVT ArgVT = Node->getOperand(i).getValueType(); 2078e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach const Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext()); 2079e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Entry.Node = Node->getOperand(i); 2080e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Entry.Ty = ArgTy; 2081e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Entry.isSExt = isSigned; 2082e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Entry.isZExt = !isSigned; 2083e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Args.push_back(Entry); 2084e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2085e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 2086e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach TLI.getPointerTy()); 2087e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2088e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach // Splice the libcall in wherever FindInputOutputChains tells us to. 2089e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach const Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext()); 2090e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach std::pair<SDValue, SDValue> CallInfo = 2091e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false, 20923d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng 0, TLI.getLibcallCallingConv(LC), /*isTailCall=*/false, 2093e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach /*isReturnValueUsed=*/true, 2094e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Callee, Args, DAG, Node->getDebugLoc()); 2095e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2096e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach // Legalize the call sequence, starting with the chain. This will advance 2097fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings // the LastCALLSEQ to the legalized version of the CALLSEQ_END node that 2098e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach // was added by LowerCallTo (guaranteeing proper serialization of calls). 2099e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach LegalizeOp(CallInfo.second); 2100e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach return CallInfo; 2101e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach} 2102e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2103f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandFPLibCall(SDNode* Node, 2104f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F32, 2105f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, 2106f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F80, 2107f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128) { 2108f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 2109825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 211035a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unexpected request for libcall!"); 2111825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f32: LC = Call_F32; break; 2112825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f64: LC = Call_F64; break; 2113825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f80: LC = Call_F80; break; 2114825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::ppcf128: LC = Call_PPCF128; break; 2115f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 2116f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, false); 2117f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 2118f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 2119f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandIntLibCall(SDNode* Node, bool isSigned, 21208983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I8, 2121f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I16, 2122f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I32, 2123f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I64, 2124f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128) { 2125f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 2126825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 212735a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unexpected request for libcall!"); 21288983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i8: LC = Call_I8; break; 21298983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i16: LC = Call_I16; break; 21308983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i32: LC = Call_I32; break; 21318983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i64: LC = Call_I64; break; 2132825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i128: LC = Call_I128; break; 2133f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 2134f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, isSigned); 2135f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 2136f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 213765279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng/// isDivRemLibcallAvailable - Return true if divmod libcall is available. 213865279cb9bd985721ac6ad090fed02298396ba06dEvan Chengstatic bool isDivRemLibcallAvailable(SDNode *Node, bool isSigned, 213965279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng const TargetLowering &TLI) { 21408e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng RTLIB::Libcall LC; 21418e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 21428e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng default: assert(0 && "Unexpected request for libcall!"); 21438e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng case MVT::i8: LC= isSigned ? RTLIB::SDIVREM_I8 : RTLIB::UDIVREM_I8; break; 21448e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng case MVT::i16: LC= isSigned ? RTLIB::SDIVREM_I16 : RTLIB::UDIVREM_I16; break; 21458e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng case MVT::i32: LC= isSigned ? RTLIB::SDIVREM_I32 : RTLIB::UDIVREM_I32; break; 21468e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng case MVT::i64: LC= isSigned ? RTLIB::SDIVREM_I64 : RTLIB::UDIVREM_I64; break; 21478e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng case MVT::i128: LC= isSigned ? RTLIB::SDIVREM_I128:RTLIB::UDIVREM_I128; break; 21488e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng } 21498e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 215065279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng return TLI.getLibcallName(LC) != 0; 215165279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng} 21528e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 215365279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng/// UseDivRem - Only issue divrem libcall if both quotient and remainder are 215465279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng/// needed. 215565279cb9bd985721ac6ad090fed02298396ba06dEvan Chengstatic bool UseDivRem(SDNode *Node, bool isSigned, bool isDIV) { 21568e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng unsigned OtherOpcode = 0; 215765279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng if (isSigned) 21588e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng OtherOpcode = isDIV ? ISD::SREM : ISD::SDIV; 215965279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng else 21608e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng OtherOpcode = isDIV ? ISD::UREM : ISD::UDIV; 216165279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng 21628e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng SDValue Op0 = Node->getOperand(0); 21638e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng SDValue Op1 = Node->getOperand(1); 21648e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng for (SDNode::use_iterator UI = Op0.getNode()->use_begin(), 21658e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng UE = Op0.getNode()->use_end(); UI != UE; ++UI) { 21668e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng SDNode *User = *UI; 21678e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng if (User == Node) 21688e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng continue; 21698e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng if (User->getOpcode() == OtherOpcode && 21708e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng User->getOperand(0) == Op0 && 217165279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng User->getOperand(1) == Op1) 217265279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng return true; 21738e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng } 217465279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng return false; 217565279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng} 217665279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng 217765279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng/// ExpandDivRemLibCall - Issue libcalls to __{u}divmod to compute div / rem 217865279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng/// pairs. 217965279cb9bd985721ac6ad090fed02298396ba06dEvan Chengvoid 218065279cb9bd985721ac6ad090fed02298396ba06dEvan ChengSelectionDAGLegalize::ExpandDivRemLibCall(SDNode *Node, 218165279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng SmallVectorImpl<SDValue> &Results) { 218265279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng unsigned Opcode = Node->getOpcode(); 218365279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng bool isSigned = Opcode == ISD::SDIVREM; 218465279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng 218565279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::Libcall LC; 218665279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 218765279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng default: assert(0 && "Unexpected request for libcall!"); 218865279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng case MVT::i8: LC= isSigned ? RTLIB::SDIVREM_I8 : RTLIB::UDIVREM_I8; break; 218965279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng case MVT::i16: LC= isSigned ? RTLIB::SDIVREM_I16 : RTLIB::UDIVREM_I16; break; 219065279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng case MVT::i32: LC= isSigned ? RTLIB::SDIVREM_I32 : RTLIB::UDIVREM_I32; break; 219165279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng case MVT::i64: LC= isSigned ? RTLIB::SDIVREM_I64 : RTLIB::UDIVREM_I64; break; 219265279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng case MVT::i128: LC= isSigned ? RTLIB::SDIVREM_I128:RTLIB::UDIVREM_I128; break; 21938e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng } 21948e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 21958e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng // The input chain to this libcall is the entry node of the function. 21968e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng // Legalizing the call will automatically add the previous call to the 21978e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng // dependence. 21988e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng SDValue InChain = DAG.getEntryNode(); 21998e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 22008e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng EVT RetVT = Node->getValueType(0); 22018e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng const Type *RetTy = RetVT.getTypeForEVT(*DAG.getContext()); 22028e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 22038e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng TargetLowering::ArgListTy Args; 22048e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng TargetLowering::ArgListEntry Entry; 22058e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 22068e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng EVT ArgVT = Node->getOperand(i).getValueType(); 22078e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng const Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext()); 22088e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Entry.Node = Node->getOperand(i); Entry.Ty = ArgTy; 22098e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Entry.isSExt = isSigned; 22108e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Entry.isZExt = !isSigned; 22118e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Args.push_back(Entry); 22128e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng } 22138e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 22148e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng // Also pass the return address of the remainder. 22158e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng SDValue FIPtr = DAG.CreateStackTemporary(RetVT); 22168e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Entry.Node = FIPtr; 22178e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Entry.Ty = RetTy->getPointerTo(); 22188e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Entry.isSExt = isSigned; 22198e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Entry.isZExt = !isSigned; 22208e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng Args.push_back(Entry); 22218e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 22228e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 22238e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng TLI.getPointerTy()); 22248e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 22258e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng // Splice the libcall in wherever FindInputOutputChains tells us to. 22268e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng DebugLoc dl = Node->getDebugLoc(); 22278e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng std::pair<SDValue, SDValue> CallInfo = 22288e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false, 22298e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 0, TLI.getLibcallCallingConv(LC), /*isTailCall=*/false, 22308e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng /*isReturnValueUsed=*/true, Callee, Args, DAG, dl); 22318e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 22328e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng // Legalize the call sequence, starting with the chain. This will advance 2233fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings // the LastCALLSEQ to the legalized version of the CALLSEQ_END node that 22348e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng // was added by LowerCallTo (guaranteeing proper serialization of calls). 22358e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng LegalizeOp(CallInfo.second); 22368e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 22378e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng // Remainder is loaded back from the stack frame. 2238fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings SDValue Rem = DAG.getLoad(RetVT, dl, getLastCALLSEQ(), FIPtr, 22398e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng MachinePointerInfo(), false, false, 0); 224065279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng Results.push_back(CallInfo.first); 224165279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng Results.push_back(Rem); 22428e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng} 22438e23e815ad1136721acdfcce76975a37c8a2c036Evan Cheng 224422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandLegalINT_TO_FP - This function is responsible for legalizing a 224522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// INT_TO_FP operation of the specified operand when the target requests that 224622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we expand it. At this point, we know that the result and operand types are 224722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target. 2248475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLegalINT_TO_FP(bool isSigned, 2249475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0, 2250e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2251af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 2252825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Op0.getValueType() == MVT::i32) { 225322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // simple 32-bit [signed|unsigned] integer to float/double expansion 2254fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 225523594d4537fb88a963c6d6993af5027eac9bfbacChris Lattner // Get the stack frame index of a 8 byte buffer. 2256825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue StackSlot = DAG.CreateStackTemporary(MVT::f64); 2257fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 225822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // word offset constant for Hi/Lo address computation 2259475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue WordOff = DAG.getConstant(sizeof(int), TLI.getPointerTy()); 226022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // set up Hi and Lo (into buffer) address based on endian 2261475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = StackSlot; 2262fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Lo = DAG.getNode(ISD::ADD, dl, 2263ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getPointerTy(), StackSlot, WordOff); 2264408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner if (TLI.isLittleEndian()) 2265408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner std::swap(Hi, Lo); 2266fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 226722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // if signed map to unsigned space 2268475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0Mapped; 226922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) { 227022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // constant used to invert sign bit (signed to unsigned mapping) 2271825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue SignBit = DAG.getConstant(0x80000000u, MVT::i32); 2272825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Op0Mapped = DAG.getNode(ISD::XOR, dl, MVT::i32, Op0, SignBit); 227322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } else { 227422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Op0Mapped = Op0; 227522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 227622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the lo of the constructed double - based on integer input 2277af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Store1 = DAG.getStore(DAG.getEntryNode(), dl, 22786229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner Op0Mapped, Lo, MachinePointerInfo(), 22791e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 228022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // initial hi portion of constructed double 2281825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue InitialHi = DAG.getConstant(0x43300000u, MVT::i32); 228222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the hi of the constructed double - biased exponent 22836229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner SDValue Store2 = DAG.getStore(Store1, dl, InitialHi, Hi, 22846229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner MachinePointerInfo(), 22856229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner false, false, 0); 228622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // load the constructed double 2287ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Load = DAG.getLoad(MVT::f64, dl, Store2, StackSlot, 2288ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(), false, false, 0); 228922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // FP constant to bias correct the final result 2290475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Bias = DAG.getConstantFP(isSigned ? 2291ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000080000000ULL) : 2292ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000000000000ULL), 2293825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::f64); 229422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // subtract the bias 2295825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Sub = DAG.getNode(ISD::FSUB, dl, MVT::f64, Load, Bias); 229622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // final result 2297475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result; 229822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // handle final rounding 2299825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (DestVT == MVT::f64) { 230022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // do nothing 230122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Result = Sub; 2302825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsLT(MVT::f64)) { 2303af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_ROUND, dl, DestVT, Sub, 23040bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(0)); 2305825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsGT(MVT::f64)) { 2306af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, DestVT, Sub); 230722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 230822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Result; 230922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 231022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner assert(!isSigned && "Legalize cannot Expand SINT_TO_FP for i64 yet"); 2311a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen // Code below here assumes !isSigned without checking again. 23120fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman 23130fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // Implementation of unsigned i64 to f64 following the algorithm in 23140fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // __floatundidf in compiler_rt. This implementation has the advantage 23150fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // of performing rounding correctly, both in the default rounding mode 23160fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // and in all alternate rounding modes. 23170fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // TODO: Generalize this for use with other types. 23180fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman if (Op0.getValueType() == MVT::i64 && DestVT == MVT::f64) { 23190fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue TwoP52 = 23200fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstant(UINT64_C(0x4330000000000000), MVT::i64); 23210fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue TwoP84PlusTwoP52 = 23220fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstantFP(BitsToDouble(UINT64_C(0x4530000000100000)), MVT::f64); 23230fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue TwoP84 = 23240fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstant(UINT64_C(0x4530000000000000), MVT::i64); 23250fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman 23260fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue Lo = DAG.getZeroExtendInReg(Op0, dl, MVT::i32); 23270fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue Hi = DAG.getNode(ISD::SRL, dl, MVT::i64, Op0, 23280fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstant(32, MVT::i64)); 23290fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue LoOr = DAG.getNode(ISD::OR, dl, MVT::i64, Lo, TwoP52); 23300fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue HiOr = DAG.getNode(ISD::OR, dl, MVT::i64, Hi, TwoP84); 2331bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue LoFlt = DAG.getNode(ISD::BITCAST, dl, MVT::f64, LoOr); 2332bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue HiFlt = DAG.getNode(ISD::BITCAST, dl, MVT::f64, HiOr); 23336e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach SDValue HiSub = DAG.getNode(ISD::FSUB, dl, MVT::f64, HiFlt, 23346e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach TwoP84PlusTwoP52); 23350fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman return DAG.getNode(ISD::FADD, dl, MVT::f64, LoFlt, HiSub); 23360fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman } 23370fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman 23383a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // Implementation of unsigned i64 to f32. 2339a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen // TODO: Generalize this for use with other types. 2340a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen if (Op0.getValueType() == MVT::i64 && DestVT == MVT::f32) { 23413a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // For unsigned conversions, convert them to signed conversions using the 23423a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // algorithm from the x86_64 __floatundidf in compiler_rt. 23433a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson if (!isSigned) { 23443a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue Fast = DAG.getNode(ISD::SINT_TO_FP, dl, MVT::f32, Op0); 2345bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 234695771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson SDValue ShiftConst = 234795771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson DAG.getConstant(1, TLI.getShiftAmountTy(Op0.getValueType())); 23483a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue Shr = DAG.getNode(ISD::SRL, dl, MVT::i64, Op0, ShiftConst); 23493a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue AndConst = DAG.getConstant(1, MVT::i64); 23503a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue And = DAG.getNode(ISD::AND, dl, MVT::i64, Op0, AndConst); 23513a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue Or = DAG.getNode(ISD::OR, dl, MVT::i64, And, Shr); 2352bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 23533a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue SignCvt = DAG.getNode(ISD::SINT_TO_FP, dl, MVT::f32, Or); 23543a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue Slow = DAG.getNode(ISD::FADD, dl, MVT::f32, SignCvt, SignCvt); 2355bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 23563a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // TODO: This really should be implemented using a branch rather than a 2357bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck // select. We happen to get lucky and machinesink does the right 2358bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck // thing most of the time. This would be a good candidate for a 23593a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson //pseudo-op, or, even better, for whole-function isel. 2360bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue SignBitTest = DAG.getSetCC(dl, TLI.getSetCCResultType(MVT::i64), 23613a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson Op0, DAG.getConstant(0, MVT::i64), ISD::SETLT); 23623a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson return DAG.getNode(ISD::SELECT, dl, MVT::f32, SignBitTest, Slow, Fast); 23633a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson } 2364bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 23653a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // Otherwise, implement the fully general conversion. 2366bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 23676e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach SDValue And = DAG.getNode(ISD::AND, dl, MVT::i64, Op0, 2368a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(UINT64_C(0xfffffffffffff800), MVT::i64)); 2369a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Or = DAG.getNode(ISD::OR, dl, MVT::i64, And, 2370a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(UINT64_C(0x800), MVT::i64)); 23716e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach SDValue And2 = DAG.getNode(ISD::AND, dl, MVT::i64, Op0, 2372a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(UINT64_C(0x7ff), MVT::i64)); 2373a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Ne = DAG.getSetCC(dl, TLI.getSetCCResultType(MVT::i64), 2374a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen And2, DAG.getConstant(UINT64_C(0), MVT::i64), ISD::SETNE); 2375a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Sel = DAG.getNode(ISD::SELECT, dl, MVT::i64, Ne, Or, Op0); 2376a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Ge = DAG.getSetCC(dl, TLI.getSetCCResultType(MVT::i64), 2377a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen Op0, DAG.getConstant(UINT64_C(0x0020000000000000), MVT::i64), 23783a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson ISD::SETUGE); 2379a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Sel2 = DAG.getNode(ISD::SELECT, dl, MVT::i64, Ge, Sel, Op0); 238095771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson EVT SHVT = TLI.getShiftAmountTy(Sel2.getValueType()); 2381bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 2382a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Sh = DAG.getNode(ISD::SRL, dl, MVT::i64, Sel2, 2383a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(32, SHVT)); 2384a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Trunc = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Sh); 2385a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fcvt = DAG.getNode(ISD::UINT_TO_FP, dl, MVT::f64, Trunc); 2386a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue TwoP32 = 2387a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstantFP(BitsToDouble(UINT64_C(0x41f0000000000000)), MVT::f64); 2388a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fmul = DAG.getNode(ISD::FMUL, dl, MVT::f64, TwoP32, Fcvt); 2389a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Lo = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Sel2); 2390a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fcvt2 = DAG.getNode(ISD::UINT_TO_FP, dl, MVT::f64, Lo); 2391a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fadd = DAG.getNode(ISD::FADD, dl, MVT::f64, Fmul, Fcvt2); 2392a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen return DAG.getNode(ISD::FP_ROUND, dl, MVT::f32, Fadd, 2393a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getIntPtrConstant(0)); 2394a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen } 2395a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen 2396b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue Tmp1 = DAG.getNode(ISD::SINT_TO_FP, dl, DestVT, Op0); 2397b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman 2398b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue SignSet = DAG.getSetCC(dl, TLI.getSetCCResultType(Op0.getValueType()), 2399b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Op0, DAG.getConstant(0, Op0.getValueType()), 2400b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman ISD::SETLT); 2401b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue Zero = DAG.getIntPtrConstant(0), Four = DAG.getIntPtrConstant(4); 2402b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue CstOffset = DAG.getNode(ISD::SELECT, dl, Zero.getValueType(), 2403b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SignSet, Four, Zero); 2404b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman 2405b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman // If the sign bit of the integer is set, the large number will be treated 2406b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman // as a negative number. To counteract this, the dynamic code adds an 2407b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman // offset depending on the data type. 2408b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman uint64_t FF; 2409b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman switch (Op0.getValueType().getSimpleVT().SimpleTy) { 241035a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unsupported integer type!"); 2411b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i8 : FF = 0x43800000ULL; break; // 2^8 (as a float) 2412b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i16: FF = 0x47800000ULL; break; // 2^16 (as a float) 2413b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i32: FF = 0x4F800000ULL; break; // 2^32 (as a float) 2414b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i64: FF = 0x5F800000ULL; break; // 2^64 (as a float) 2415b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman } 2416b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman if (TLI.isLittleEndian()) FF <<= 32; 2417b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Constant *FudgeFactor = ConstantInt::get( 2418b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Type::getInt64Ty(*DAG.getContext()), FF); 2419b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman 2420b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue CPIdx = DAG.getConstantPool(FudgeFactor, TLI.getPointerTy()); 2421b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 2422b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman CPIdx = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), CPIdx, CstOffset); 2423b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Alignment = std::min(Alignment, 4u); 2424b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue FudgeInReg; 2425b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman if (DestVT == MVT::f32) 2426b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman FudgeInReg = DAG.getLoad(MVT::f32, dl, DAG.getEntryNode(), CPIdx, 242785ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getConstantPool(), 2428b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman false, false, Alignment); 2429b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman else { 2430b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman FudgeInReg = 2431a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings LegalizeOp(DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, 2432b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman DAG.getEntryNode(), CPIdx, 243385ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getConstantPool(), 2434b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman MVT::f32, false, false, Alignment)); 2435b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman } 243622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2437b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman return DAG.getNode(ISD::FADD, dl, DestVT, Tmp1, FudgeInReg); 243822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 243922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 244022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalINT_TO_FP - This function is responsible for legalizing a 244122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// *INT_TO_FP operation of the specified operand when the target requests that 244222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 244322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal UINT_TO_FP or SINT_TO_FP 244422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that takes a larger input. 2445475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalINT_TO_FP(SDValue LegalOp, 2446e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2447af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2448af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 244922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate *INT_TO_FP operation to use. 2450e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewInTy = LegalOp.getValueType(); 245122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 245222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 245322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 245422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 245522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2456825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewInTy = (MVT::SimpleValueType)(NewInTy.getSimpleVT().SimpleTy+1); 245783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewInTy.isInteger() && "Ran out of possibilities!"); 245822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 245922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports SINT_TO_FP of this type, use it. 24603be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::SINT_TO_FP, NewInTy)) { 24613be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::SINT_TO_FP; 24623be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 246322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 246422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) continue; 246522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 246622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports UINT_TO_FP of this type, use it. 24673be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::UINT_TO_FP, NewInTy)) { 24683be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::UINT_TO_FP; 24693be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 247022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 247122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 247222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 247322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 247422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 247522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Okay, we found the operation and type to use. Zero extend our input to the 247622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // desired type then run the operation on it. 2477af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(OpToUse, dl, DestVT, 247822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, 2479af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen dl, NewInTy, LegalOp)); 248077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 248177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 248222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalFP_TO_INT - This function is responsible for legalizing a 248322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// FP_TO_*INT operation of the specified operand when the target requests that 248422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 248522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal FP_TO_UINT or FP_TO_SINT 248622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that returns a larger result. 2487475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalFP_TO_INT(SDValue LegalOp, 2488e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2489af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2490af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 249122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate FP_TO*INT operation to use. 2492e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewOutTy = DestVT; 24939c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 249422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 2495e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 249622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 249722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2498825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewOutTy = (MVT::SimpleValueType)(NewOutTy.getSimpleVT().SimpleTy+1); 249983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewOutTy.isInteger() && "Ran out of possibilities!"); 250066de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner 25013be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_SINT, NewOutTy)) { 250222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_SINT; 250322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 250422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 2505e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 25063be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_UINT, NewOutTy)) { 250722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_UINT; 250822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 2509e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner } 25100d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 251122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 2512a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner } 2513a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner 2514fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 251527a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Okay, we found the operation and type to use. 2516af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Operation = DAG.getNode(OpToUse, dl, NewOutTy, LegalOp); 2517126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 251827a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Truncate the result of the extended FP_TO_*INT operation to the desired 251927a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // size. 2520af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(ISD::TRUNCATE, dl, DestVT, Operation); 252122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 252213689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner 252322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBSWAP - Open code the operations for BSWAP of the specified operation. 252422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 25258a782a2a8c2f0c82f292d03a3f707232b0bae27bDale JohannesenSDValue SelectionDAGLegalize::ExpandBSWAP(SDValue Op, DebugLoc dl) { 2526e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 252795771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson EVT SHVT = TLI.getShiftAmountTy(VT); 2528475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4, Tmp5, Tmp6, Tmp7, Tmp8; 2529825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (VT.getSimpleVT().SimpleTy) { 253035a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unhandled Expand type in BSWAP!"); 2531825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i16: 25328a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 25338a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 25348a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp1, Tmp2); 2535825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i32: 25368a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 25378a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 25388a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 25398a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 25408a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(0xFF0000, VT)); 25418a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(0xFF00, VT)); 25428a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 25438a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 25448a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 2545825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i64: 25468a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(56, SHVT)); 25478a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(40, SHVT)); 25488a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 25498a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 25508a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 25518a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 25528a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(40, SHVT)); 25538a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(56, SHVT)); 25548a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::AND, dl, VT, Tmp7, DAG.getConstant(255ULL<<48, VT)); 25558a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::AND, dl, VT, Tmp6, DAG.getConstant(255ULL<<40, VT)); 25568a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::AND, dl, VT, Tmp5, DAG.getConstant(255ULL<<32, VT)); 25578a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::AND, dl, VT, Tmp4, DAG.getConstant(255ULL<<24, VT)); 25588a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(255ULL<<16, VT)); 25598a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(255ULL<<8 , VT)); 25608a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp7); 25618a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::OR, dl, VT, Tmp6, Tmp5); 25628a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 25638a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 25648a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp6); 25658a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 25668a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp4); 25670d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner } 256877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 2569edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 2570b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer/// SplatByte - Distribute ByteVal over NumBits bits. 25715df5a22d1a098961edebac59fbddcab045fddd29Benjamin Kramer// FIXME: Move this helper to a common place. 2572b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramerstatic APInt SplatByte(unsigned NumBits, uint8_t ByteVal) { 2573b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer APInt Val = APInt(NumBits, ByteVal); 2574b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer unsigned Shift = 8; 2575b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer for (unsigned i = NumBits; i > 8; i >>= 1) { 2576b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Val = (Val << Shift) | Val; 2577b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Shift <<= 1; 2578b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer } 2579b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer return Val; 2580b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer} 2581b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer 258222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBitCount - Expand the specified bitcount instruction into operations. 258322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 2584fdc40a0a696c658d550d894ea03772e5f8af2c94Scott MichelSDValue SelectionDAGLegalize::ExpandBitCount(unsigned Opc, SDValue Op, 25858a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 258622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner switch (Opc) { 258735a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Cannot expand this yet!"); 258822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTPOP: { 2589e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 259095771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson EVT ShVT = TLI.getShiftAmountTy(VT); 2591b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer unsigned Len = VT.getSizeInBits(); 2592b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer 25935df5a22d1a098961edebac59fbddcab045fddd29Benjamin Kramer assert(VT.isInteger() && Len <= 128 && Len % 8 == 0 && 25945df5a22d1a098961edebac59fbddcab045fddd29Benjamin Kramer "CTPOP not implemented for this type."); 25955df5a22d1a098961edebac59fbddcab045fddd29Benjamin Kramer 2596b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // This is the "best" algorithm from 2597b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // http://graphics.stanford.edu/~seander/bithacks.html#CountBitsSetParallel 2598b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer 2599b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer SDValue Mask55 = DAG.getConstant(SplatByte(Len, 0x55), VT); 2600b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer SDValue Mask33 = DAG.getConstant(SplatByte(Len, 0x33), VT); 2601b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer SDValue Mask0F = DAG.getConstant(SplatByte(Len, 0x0F), VT); 2602b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer SDValue Mask01 = DAG.getConstant(SplatByte(Len, 0x01), VT); 2603b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer 2604b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // v = v - ((v >> 1) & 0x55555555...) 2605b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Op = DAG.getNode(ISD::SUB, dl, VT, Op, 2606b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::AND, dl, VT, 2607b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::SRL, dl, VT, Op, 2608b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getConstant(1, ShVT)), 2609b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Mask55)); 2610b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // v = (v & 0x33333333...) + ((v >> 2) & 0x33333333...) 2611b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Op = DAG.getNode(ISD::ADD, dl, VT, 2612b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::AND, dl, VT, Op, Mask33), 2613b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::AND, dl, VT, 2614b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::SRL, dl, VT, Op, 2615b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getConstant(2, ShVT)), 2616b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Mask33)); 2617b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // v = (v + (v >> 4)) & 0x0F0F0F0F... 2618b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Op = DAG.getNode(ISD::AND, dl, VT, 2619b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::ADD, dl, VT, Op, 2620b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::SRL, dl, VT, Op, 2621b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getConstant(4, ShVT))), 2622b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Mask0F); 2623b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // v = (v * 0x01010101...) >> (Len - 8) 2624b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Op = DAG.getNode(ISD::SRL, dl, VT, 2625b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::MUL, dl, VT, Op, Mask01), 2626b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getConstant(Len - 8, ShVT)); 262795771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson 262822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Op; 262922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 263022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTLZ: { 263122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we do this: 263222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 1); 263322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 2); 263422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // ... 263522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>16); 263622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>32); // for 64-bit input 263722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // return popcount(~x); 263822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // 263922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // but see also: http://www.hackersdelight.org/HDcode/nlz.cc 2640e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 264195771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson EVT ShVT = TLI.getShiftAmountTy(VT); 264283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 264322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 2644475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2645fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::OR, dl, VT, Op, 2646e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3)); 264722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 26488a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Op = DAG.getNOT(dl, Op, VT); 26498a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Op); 265022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 265122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTTZ: { 265222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we use: { return popcount(~x & (x - 1)); } 265322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // unless the target has ctlz but not ctpop, in which case we use: 265422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // { return 32 - nlz(~x & (x-1)); } 265522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // see also http://www.hackersdelight.org/HDcode/ntz.cc 2656e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 26578a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue Tmp3 = DAG.getNode(ISD::AND, dl, VT, 26588a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNOT(dl, Op, VT), 26598a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SUB, dl, VT, Op, 26607581bfa2757a3149c6d17c0fe592e5c3808aa843Bill Wendling DAG.getConstant(1, VT))); 266122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If ISD::CTLZ is legal and CTPOP isn't, then do that instead. 2662f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman if (!TLI.isOperationLegalOrCustom(ISD::CTPOP, VT) && 2663f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.isOperationLegalOrCustom(ISD::CTLZ, VT)) 26648a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::SUB, dl, VT, 266583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(VT.getSizeInBits(), VT), 26668a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::CTLZ, dl, VT, Tmp3)); 26678a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Tmp3); 266822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 266922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 267022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 2671e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 2672e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbachstd::pair <SDValue, SDValue> SelectionDAGLegalize::ExpandAtomic(SDNode *Node) { 2673e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach unsigned Opc = Node->getOpcode(); 2674e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach MVT VT = cast<AtomicSDNode>(Node)->getMemoryVT().getSimpleVT(); 2675e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach RTLIB::Libcall LC; 2676e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2677e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (Opc) { 2678e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: 2679e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach llvm_unreachable("Unhandled atomic intrinsic Expand!"); 2680e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2681ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case ISD::ATOMIC_SWAP: 2682ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach switch (VT.SimpleTy) { 2683ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2684ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case MVT::i8: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_1; break; 2685ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case MVT::i16: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_2; break; 2686ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case MVT::i32: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_4; break; 2687ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case MVT::i64: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_8; break; 2688ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach } 2689ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach break; 2690e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_CMP_SWAP: 2691e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2692e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2693e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_1; break; 2694e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_2; break; 2695e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_4; break; 2696e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_8; break; 2697e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2698e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2699e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_ADD: 2700e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2701e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2702e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_ADD_1; break; 2703e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_ADD_2; break; 2704e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_ADD_4; break; 2705e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_ADD_8; break; 2706e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2707e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2708e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_SUB: 2709e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2710e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2711e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_SUB_1; break; 2712e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_SUB_2; break; 2713e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_SUB_4; break; 2714e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_SUB_8; break; 2715e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2716e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2717e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_AND: 2718e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2719e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2720e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_AND_1; break; 2721e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_AND_2; break; 2722e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_AND_4; break; 2723e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_AND_8; break; 2724e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2725e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2726e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_OR: 2727e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2728e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2729e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_OR_1; break; 2730e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_OR_2; break; 2731e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_OR_4; break; 2732e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_OR_8; break; 2733e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2734e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2735e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_XOR: 2736e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2737e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2738e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_XOR_1; break; 2739e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_XOR_2; break; 2740e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_XOR_4; break; 2741e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_XOR_8; break; 2742e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2743e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2744e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_NAND: 2745e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2746e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2747e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_NAND_1; break; 2748e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_NAND_2; break; 2749e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_NAND_4; break; 2750e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_NAND_8; break; 2751e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2752e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2753e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2754e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2755e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach return ExpandChainLibCall(LC, Node, false); 2756e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach} 2757e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 27588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::ExpandNode(SDNode *Node, 27598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 27608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 2761bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 27628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 27638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 27648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 27658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 27668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandBitCount(Node->getOpcode(), Node->getOperand(0), dl); 27678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 27688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 27698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: 2770775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandBSWAP(Node->getOperand(0), dl)); 27718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 27728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 27738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 27748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 27758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, Node->getValueType(0))); 27768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 27778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 27788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(1, Node->getValueType(0))); 27798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 27808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 27818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_LABEL: 27828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::PREFETCH: 27838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAEND: 2784c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach case ISD::EH_SJLJ_LONGJMP: 2785e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach case ISD::EH_SJLJ_DISPATCHSETUP: 2786e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach // If the target didn't expand these, there's nothing to do, so just 2787e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach // preserve the chain and be done. 2788c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach Results.push_back(Node->getOperand(0)); 2789c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach break; 2790c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach case ISD::EH_SJLJ_SETJMP: 2791e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach // If the target didn't expand this, just return 'zero' and preserve the 2792e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach // chain. 2793c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach Results.push_back(DAG.getConstant(0, MVT::i32)); 27948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(0)); 27958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 2796bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach case ISD::MEMBARRIER: { 2797bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach // If the target didn't lower this, lower it to '__sync_synchronize()' call 2798bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach TargetLowering::ArgListTy Args; 2799bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach std::pair<SDValue, SDValue> CallResult = 2800bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach TLI.LowerCallTo(Node->getOperand(0), Type::getVoidTy(*DAG.getContext()), 28013d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng false, false, false, false, 0, CallingConv::C, 28023d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng /*isTailCall=*/false, 2803bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach /*isReturnValueUsed=*/true, 2804bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach DAG.getExternalSymbol("__sync_synchronize", 2805bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach TLI.getPointerTy()), 2806bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach Args, DAG, dl); 2807bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach Results.push_back(CallResult.second); 2808bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach break; 2809bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach } 2810b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach // By default, atomic intrinsics are marked Legal and lowered. Targets 2811b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach // which don't support them directly, however, may want libcalls, in which 2812b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach // case they mark them Expand, and we get here. 2813b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_SWAP: 2814b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_ADD: 2815b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_SUB: 2816b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_AND: 2817b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_OR: 2818b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_XOR: 2819b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_NAND: 2820b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_MIN: 2821b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_MAX: 2822b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_UMIN: 2823b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_UMAX: 2824a845706dc1cebfe75913832e07ef114519a879d6Evan Cheng case ISD::ATOMIC_CMP_SWAP: { 2825e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach std::pair<SDValue, SDValue> Tmp = ExpandAtomic(Node); 2826e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Results.push_back(Tmp.first); 2827e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Results.push_back(Tmp.second); 282859c38f31acf87901208bbf790508196b1c0ad1fdJim Grosbach break; 2829a845706dc1cebfe75913832e07ef114519a879d6Evan Cheng } 28304bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::DYNAMIC_STACKALLOC: 28314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ExpandDYNAMIC_STACKALLOC(Node, Results); 28324bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 28338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 28348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0; i < Node->getNumValues(); i++) 28358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(i)); 28368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 28378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UNDEF: { 2838e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 28398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (VT.isInteger()) 28408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, VT)); 284135a389344d21178ee280c2410401b2060b5b879cChris Lattner else { 284235a389344d21178ee280c2410401b2060b5b879cChris Lattner assert(VT.isFloatingPoint() && "Unknown value type!"); 28438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstantFP(0, VT)); 284435a389344d21178ee280c2410401b2060b5b879cChris Lattner } 28458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 28468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 28478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAP: { 28488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // If this operation is not supported, lower it to 'abort()' call 28498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::ArgListTy Args; 28508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman std::pair<SDValue, SDValue> CallResult = 28511d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson TLI.LowerCallTo(Node->getOperand(0), Type::getVoidTy(*DAG.getContext()), 28523d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng false, false, false, false, 0, CallingConv::C, 28533d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng /*isTailCall=*/false, 285498ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 28558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getExternalSymbol("abort", TLI.getPointerTy()), 285646ada19645c981a0b7932487d163f7582074a4d9Bill Wendling Args, DAG, dl); 28578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(CallResult.second); 28588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 28598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 28608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND: 2861bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck case ISD::BITCAST: 28628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), Node->getValueType(0), 28638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 28648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 28658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 28668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_EXTEND: 28678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), 28688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType(), 28698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 28708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 28718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 28728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 28738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: we could fall back on load/store here too for targets without 28748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // SAR. However, it is doubtful that any exist. 2875e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 287687862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman EVT VT = Node->getValueType(0); 287795771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson EVT ShiftAmountTy = TLI.getShiftAmountTy(VT); 2878d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman if (VT.isVector()) 287987862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman ShiftAmountTy = VT; 2880d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman unsigned BitsDiff = VT.getScalarType().getSizeInBits() - 2881d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman ExtraVT.getScalarType().getSizeInBits(); 288287862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman SDValue ShiftCst = DAG.getConstant(BitsDiff, ShiftAmountTy); 28838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SHL, dl, Node->getValueType(0), 28848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), ShiftCst); 2885775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SRA, dl, Node->getValueType(0), Tmp1, ShiftCst); 2886775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 28878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 28888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 28898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: { 28908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // The only way we can lower this is to turn it into a TRUNCSTORE, 28917a2bdde0a0eebcd2125055e0eacaca040f0b766cChris Lattner // EXTLOAD pair, targeting a temporary location (a stack slot). 28928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 28938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: there is a choice here between constantly creating new stack 28948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // slots and always reusing the same one. We currently always create 28958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // new ones, as reuse may inhibit scheduling. 2896e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 28978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), ExtraVT, 28988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 28998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 29008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 29038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 29048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandLegalINT_TO_FP(Node->getOpcode() == ISD::SINT_TO_FP, 29058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), Node->getValueType(0), dl); 29068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 29078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: { 29098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SDValue True, False; 2910e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getOperand(0).getValueType(); 2911e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = Node->getValueType(0); 29123069cbf7b3ef9a31bbb8e434686b7259052c364aBenjamin Kramer APFloat apf(APInt::getNullValue(VT.getSizeInBits())); 29138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APInt x = APInt::getSignBit(NVT.getSizeInBits()); 29148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman (void)apf.convertFromAPInt(x, false, APFloat::rmNearestTiesToEven); 29158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getConstantFP(apf, VT); 29168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), 29178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), 29188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, ISD::SETLT); 29198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman True = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, Node->getOperand(0)); 2920775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling False = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, 2921775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getNode(ISD::FSUB, dl, VT, 2922775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(0), Tmp1)); 29238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman False = DAG.getNode(ISD::XOR, dl, NVT, False, 29248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(x, NVT)); 29258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, True, False); 29268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 29278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 2929509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VAARG: { 2930509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman const Value *V = cast<SrcValueSDNode>(Node->getOperand(2))->getValue(); 2931e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2932509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2933509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 293472d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola unsigned Align = Node->getConstantOperandVal(3); 293572d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola 2936ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue VAListLoad = DAG.getLoad(TLI.getPointerTy(), dl, Tmp1, Tmp2, 2937ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(V), false, false, 0); 293872d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola SDValue VAList = VAListLoad; 293972d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola 2940cbeeae23c31d32b833c9c7c3e8984e4cbcf22f45Rafael Espindola if (Align > TLI.getMinStackArgumentAlignment()) { 2941cbeeae23c31d32b833c9c7c3e8984e4cbcf22f45Rafael Espindola assert(((Align & (Align-1)) == 0) && "Expected Align to be a power of 2"); 2942cbeeae23c31d32b833c9c7c3e8984e4cbcf22f45Rafael Espindola 294372d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola VAList = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList, 294472d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola DAG.getConstant(Align - 1, 294572d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola TLI.getPointerTy())); 294672d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola 294772d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola VAList = DAG.getNode(ISD::AND, dl, TLI.getPointerTy(), VAList, 294807e3a38c78d2788e05d716e7fa552b9449c87c33Chris Lattner DAG.getConstant(-(int64_t)Align, 294972d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola TLI.getPointerTy())); 295072d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola } 295172d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola 2952509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Increment the pointer, VAList, to the next vaarg 2953509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList, 2954509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(TLI.getTargetData()-> 2955adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng getTypeAllocSize(VT.getTypeForEVT(*DAG.getContext())), 2956509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TLI.getPointerTy())); 2957509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Store the incremented VAList to the legalized pointer 29586229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner Tmp3 = DAG.getStore(VAListLoad.getValue(1), dl, Tmp3, Tmp2, 29596229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner MachinePointerInfo(V), false, false, 0); 2960509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Load the actual argument out of the pointer VAList 2961ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Results.push_back(DAG.getLoad(VT, dl, Tmp3, VAList, MachinePointerInfo(), 29621e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0)); 2963509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Results[0].getValue(1)); 2964509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2965509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 29668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VACOPY: { 29678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This defaults to loading a pointer from the input and storing it to the 29688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // output, returning the chain. 29698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VD = cast<SrcValueSDNode>(Node->getOperand(3))->getValue(); 29708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VS = cast<SrcValueSDNode>(Node->getOperand(4))->getValue(); 29718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getLoad(TLI.getPointerTy(), dl, Node->getOperand(0), 2972ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Node->getOperand(2), MachinePointerInfo(VS), 2973ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, 0); 2974ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Tmp1 = DAG.getStore(Tmp1.getValue(1), dl, Tmp1, Node->getOperand(1), 2975ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(VD), false, false, 0); 2976775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 29778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 29808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOperand(0).getValueType().getVectorNumElements() == 1) 29818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This must be an access of the only element. Return it. 2982bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp1 = DAG.getNode(ISD::BITCAST, dl, Node->getValueType(0), 29838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 29848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 29858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandExtractFromVectorThroughStack(SDValue(Node, 0)); 29868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 29878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_SUBVECTOR: 2989775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandExtractFromVectorThroughStack(SDValue(Node, 0))); 29908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 2991cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene case ISD::INSERT_SUBVECTOR: 2992cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene Results.push_back(ExpandInsertToVectorThroughStack(SDValue(Node, 0))); 2993cfe33c46aa50f04adb0431243e7d25f79b719ac6David Greene break; 2994509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::CONCAT_VECTORS: { 2995775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandVectorBuildThroughStack(Node)); 2996509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2997509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 29988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SCALAR_TO_VECTOR: 2999775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandSCALAR_TO_VECTOR(Node)); 30008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 30013f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INSERT_VECTOR_ELT: 3002775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandINSERT_VECTOR_ELT(Node->getOperand(0), 3003775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1), 3004775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(2), dl)); 30053f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 3006509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 3007509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 3008509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 3009509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3010e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 3011e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 301214b2141497a913a2d5b508a0174ba09cac61e0bfBob Wilson if (getTypeAction(EltVT) == Promote) 301314b2141497a913a2d5b508a0174ba09cac61e0bfBob Wilson EltVT = TLI.getTypeToTransformTo(*DAG.getContext(), EltVT); 3014509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned NumElems = VT.getVectorNumElements(); 3015509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<SDValue, 8> Ops; 3016509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman for (unsigned i = 0; i != NumElems; ++i) { 3017509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Mask[i] < 0) { 3018509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getUNDEF(EltVT)); 3019509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman continue; 3020509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3021509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned Idx = Mask[i]; 3022509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Idx < NumElems) 3023775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 3024775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(0), 3025775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getIntPtrConstant(Idx))); 3026509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 3027775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 3028775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1), 3029775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getIntPtrConstant(Idx - NumElems))); 3030509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3031509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &Ops[0], Ops.size()); 3032509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3033509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3034509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 30358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: { 3036e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpTy = Node->getOperand(0).getValueType(); 30378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (cast<ConstantSDNode>(Node->getOperand(1))->getZExtValue()) { 30388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 1 -> Hi 30398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRL, dl, OpTy, Node->getOperand(0), 30408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OpTy.getSizeInBits()/2, 304195771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(Node->getOperand(0).getValueType()))); 30428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), Tmp1); 30438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 30448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 0 -> Lo 30458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), 30468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 30478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 30488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 30498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 30508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 30513f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKSAVE: 30523f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // Expand to CopyFromReg if the target set 30533f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // StackPointerRegisterToSaveRestore. 30543f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 3055775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, SP, 3056775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 30573f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Results[0].getValue(1)); 30583f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } else { 3059775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getUNDEF(Node->getValueType(0))); 30603f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Node->getOperand(0)); 30613f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 30623f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 30633f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKRESTORE: 3064775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // Expand to CopyToReg if the target set 3065775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // StackPointerRegisterToSaveRestore. 3066775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 3067775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyToReg(Node->getOperand(0), dl, SP, 3068775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1))); 3069775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 3070775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Node->getOperand(0)); 3071775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 30723f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 30734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::FCOPYSIGN: 3074775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFCOPYSIGN(Node)); 30754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 3076f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEG: 3077f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FNEG(X) -> Y = SUB -0.0, X 3078f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getConstantFP(-0.0, Node->getValueType(0)); 3079f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(ISD::FSUB, dl, Node->getValueType(0), Tmp1, 3080f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Node->getOperand(0)); 3081f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 3082f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3083f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FABS: { 3084f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FABS(X) -> Y = (X >u 0.0) ? X : fneg(X). 3085e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 3086f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = Node->getOperand(0); 3087f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp2 = DAG.getConstantFP(0.0, VT); 3088775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(Tmp1.getValueType()), 3089f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1, Tmp2, ISD::SETUGT); 3090775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp3 = DAG.getNode(ISD::FNEG, dl, VT, Tmp1); 3091775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SELECT, dl, VT, Tmp2, Tmp1, Tmp3); 3092f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 3093f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3094f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 3095f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSQRT: 3096775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::SQRT_F32, RTLIB::SQRT_F64, 3097775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::SQRT_F80, RTLIB::SQRT_PPCF128)); 3098f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3099f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSIN: 3100775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::SIN_F32, RTLIB::SIN_F64, 3101775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::SIN_F80, RTLIB::SIN_PPCF128)); 3102f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3103f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCOS: 3104775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::COS_F32, RTLIB::COS_F64, 3105775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::COS_F80, RTLIB::COS_PPCF128)); 3106f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3107f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG: 3108775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG_F32, RTLIB::LOG_F64, 3109775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG_F80, RTLIB::LOG_PPCF128)); 3110f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3111f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG2: 3112775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG2_F32, RTLIB::LOG2_F64, 3113775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG2_F80, RTLIB::LOG2_PPCF128)); 3114f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3115f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG10: 3116775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG10_F32, RTLIB::LOG10_F64, 3117775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG10_F80, RTLIB::LOG10_PPCF128)); 3118f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3119f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP: 3120775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP_F32, RTLIB::EXP_F64, 3121775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::EXP_F80, RTLIB::EXP_PPCF128)); 3122f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3123f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP2: 3124775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP2_F32, RTLIB::EXP2_F64, 3125775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::EXP2_F80, RTLIB::EXP2_PPCF128)); 3126f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3127f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FTRUNC: 3128775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::TRUNC_F32, RTLIB::TRUNC_F64, 3129775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::TRUNC_F80, RTLIB::TRUNC_PPCF128)); 3130f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3131f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FFLOOR: 3132775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::FLOOR_F32, RTLIB::FLOOR_F64, 3133775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::FLOOR_F80, RTLIB::FLOOR_PPCF128)); 3134f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3135f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCEIL: 3136775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::CEIL_F32, RTLIB::CEIL_F64, 3137775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::CEIL_F80, RTLIB::CEIL_PPCF128)); 3138f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3139f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FRINT: 3140775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::RINT_F32, RTLIB::RINT_F64, 3141775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::RINT_F80, RTLIB::RINT_PPCF128)); 3142f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3143f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEARBYINT: 3144775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::NEARBYINT_F32, 3145775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_F64, 3146775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_F80, 3147775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_PPCF128)); 3148f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3149f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOWI: 3150775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::POWI_F32, RTLIB::POWI_F64, 3151775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::POWI_F80, RTLIB::POWI_PPCF128)); 3152f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3153f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOW: 3154775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::POW_F32, RTLIB::POW_F64, 3155775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::POW_F80, RTLIB::POW_PPCF128)); 3156f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3157f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FDIV: 3158775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::DIV_F32, RTLIB::DIV_F64, 3159775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::DIV_F80, RTLIB::DIV_PPCF128)); 3160f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3161f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FREM: 3162775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::REM_F32, RTLIB::REM_F64, 3163775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::REM_F80, RTLIB::REM_PPCF128)); 3164f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3165927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov case ISD::FP16_TO_FP32: 3166927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov Results.push_back(ExpandLibCall(RTLIB::FPEXT_F16_F32, Node, false)); 3167927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov break; 3168927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov case ISD::FP32_TO_FP16: 3169927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov Results.push_back(ExpandLibCall(RTLIB::FPROUND_F32_F16, Node, false)); 3170927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov break; 3171f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::ConstantFP: { 3172f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman ConstantFPSDNode *CFP = cast<ConstantFPSDNode>(Node); 3173775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // Check to see if this FP immediate is already legal. 3174775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // If this is a legal constant, turn it into a TargetConstantFP node. 3175a1eaa3c52b75d4fe2bcd4f7c52e56c405ee91d3cEvan Cheng if (TLI.isFPImmLegal(CFP->getValueAPF(), Node->getValueType(0))) 3176775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(SDValue(Node, 0)); 3177f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 3178775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandConstantFP(CFP, true, DAG, TLI)); 3179f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 3180f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 318126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EHSELECTION: { 318226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionSelectorRegister(); 318326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 3184775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(1), dl, Reg, 3185775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 318626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 318726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 318826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 318926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EXCEPTIONADDR: { 319026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionAddressRegister(); 319126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 3192775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, Reg, 3193775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 319426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 319526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 319626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 319726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::SUB: { 3198e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 319926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ISD::ADD, VT) && 320026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman TLI.isOperationLegalOrCustom(ISD::XOR, VT) && 320126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "Don't know how to expand this subtraction!"); 320226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ISD::XOR, dl, VT, Node->getOperand(1), 320326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman DAG.getConstant(APInt::getAllOnesValue(VT.getSizeInBits()), VT)); 3204775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::ADD, dl, VT, Tmp2, DAG.getConstant(1, VT)); 3205775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::ADD, dl, VT, Node->getOperand(0), Tmp1)); 320626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 320726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 3208f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UREM: 3209f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SREM: { 3210e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 321126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 3212f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SREM; 3213f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivOpc = isSigned ? ISD::SDIV : ISD::UDIV; 3214f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 3215f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(0); 3216f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp3 = Node->getOperand(1); 321765279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng if (TLI.isOperationLegalOrCustom(DivRemOpc, VT) || 321865279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng (isDivRemLibcallAvailable(Node, isSigned, TLI) && 321965279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng UseDivRem(Node, isSigned, false))) { 32203be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Tmp2, Tmp3).getValue(1); 32213be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } else if (TLI.isOperationLegalOrCustom(DivOpc, VT)) { 3222f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // X % Y -> X-X/Y*Y 3223f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivOpc, dl, VT, Tmp2, Tmp3); 3224f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, VT, Tmp1, Tmp3); 3225f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, Tmp2, Tmp1); 322665279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng } else if (isSigned) 322765279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng Tmp1 = ExpandIntLibCall(Node, true, 322865279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::SREM_I8, 322965279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::SREM_I16, RTLIB::SREM_I32, 323065279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::SREM_I64, RTLIB::SREM_I128); 323165279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng else 323265279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng Tmp1 = ExpandIntLibCall(Node, false, 323365279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::UREM_I8, 323465279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::UREM_I16, RTLIB::UREM_I32, 323565279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::UREM_I64, RTLIB::UREM_I128); 323626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 323726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 323826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 3239f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UDIV: 3240f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SDIV: { 3241f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SDIV; 3242f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 3243e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 324426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 324565279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng if (TLI.isOperationLegalOrCustom(DivRemOpc, VT) || 324665279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng (isDivRemLibcallAvailable(Node, isSigned, TLI) && 324765279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng UseDivRem(Node, isSigned, true))) 3248f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Node->getOperand(0), 3249f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(1)); 325065279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng else if (isSigned) 325165279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng Tmp1 = ExpandIntLibCall(Node, true, 325265279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::SDIV_I8, 325365279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::SDIV_I16, RTLIB::SDIV_I32, 325465279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::SDIV_I64, RTLIB::SDIV_I128); 325565279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng else 325665279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng Tmp1 = ExpandIntLibCall(Node, false, 325765279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::UDIV_I8, 325865279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::UDIV_I16, RTLIB::UDIV_I32, 325965279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng RTLIB::UDIV_I64, RTLIB::UDIV_I128); 326026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 326126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 326226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 326326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHU: 326426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHS: { 326526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned ExpandOpcode = Node->getOpcode() == ISD::MULHU ? ISD::UMUL_LOHI : 326626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman ISD::SMUL_LOHI; 3267e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 326826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 326926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ExpandOpcode, VT) && 327026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "If this wasn't legal, it shouldn't have been created!"); 327126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ExpandOpcode, dl, VTs, Node->getOperand(0), 327226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getOperand(1)); 327326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1.getValue(1)); 327426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 327526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 327665279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng case ISD::SDIVREM: 327765279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng case ISD::UDIVREM: 327865279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng // Expand into divrem libcall 327965279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng ExpandDivRemLibCall(Node, Results); 328065279cb9bd985721ac6ad090fed02298396ba06dEvan Cheng break; 328126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MUL: { 3282e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 328326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 328426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // See if multiply or divide can be lowered using two-result operations. 328526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // We just need the low half of the multiply; try both the signed 328626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // and unsigned forms. If the target supports both SMUL_LOHI and 328726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // UMUL_LOHI, form a preference by checking which forms of plain 328826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // MULH it supports. 328926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasSMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::SMUL_LOHI, VT); 329026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasUMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::UMUL_LOHI, VT); 329126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHS = TLI.isOperationLegalOrCustom(ISD::MULHS, VT); 329226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHU = TLI.isOperationLegalOrCustom(ISD::MULHU, VT); 329326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned OpToUse = 0; 329426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (HasSMUL_LOHI && !HasMULHS) { 329526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 329626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI && !HasMULHU) { 329726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 329826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasSMUL_LOHI) { 329926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 330026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI) { 330126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 330226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 330326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (OpToUse) { 3304775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(OpToUse, dl, VTs, Node->getOperand(0), 3305775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1))); 330626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 330726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 33088983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, false, 33098983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::MUL_I8, 33108983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::MUL_I16, RTLIB::MUL_I32, 331126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::MUL_I64, RTLIB::MUL_I128); 331226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 331326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 331426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 33154bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SADDO: 33164bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SSUBO: { 33174bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 33184bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 33194bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::SADDO ? 33204bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 33214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 33224bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 3323122d06de7482dcb39e7dbcbfe302e39cc55627e5Bill Wendling EVT OType = Node->getValueType(1); 3324775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling 33254bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Zero = DAG.getConstant(0, LHS.getValueType()); 33264bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 33274bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // LHSSign -> LHS >= 0 33284bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RHSSign -> RHS >= 0 33294bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // SumSign -> Sum >= 0 33304bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 33314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Add: 33324bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign == RHSSign) && (LHSSign != SumSign) 33334bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Sub: 33344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign != RHSSign) && (LHSSign != SumSign) 33354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 33364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHSSign = DAG.getSetCC(dl, OType, LHS, Zero, ISD::SETGE); 33374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHSSign = DAG.getSetCC(dl, OType, RHS, Zero, ISD::SETGE); 33384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignsMatch = DAG.getSetCC(dl, OType, LHSSign, RHSSign, 33394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Node->getOpcode() == ISD::SADDO ? 33404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETEQ : ISD::SETNE); 33414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 33424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSign = DAG.getSetCC(dl, OType, Sum, Zero, ISD::SETGE); 33434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSignNE = DAG.getSetCC(dl, OType, LHSSign, SumSign, ISD::SETNE); 33444bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 33454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Cmp = DAG.getNode(ISD::AND, dl, OType, SignsMatch, SumSignNE); 33464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Cmp); 33474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 33484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 33494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::UADDO: 33504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::USUBO: { 33514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 33524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 33534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::UADDO ? 33544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 33554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 33564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 3357775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getSetCC(dl, Node->getValueType(1), Sum, LHS, 3358775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOpcode () == ISD::UADDO ? 3359775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling ISD::SETULT : ISD::SETUGT)); 33604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 33614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 3362db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::UMULO: 3363db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::SMULO: { 3364e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 3365db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue LHS = Node->getOperand(0); 3366db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue RHS = Node->getOperand(1); 3367db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue BottomHalf; 3368db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue TopHalf; 3369ec9d8b00470b2ddabef4e1b58b4f60d69995d8ceNuno Lopes static const unsigned Ops[2][3] = 3370db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { { ISD::MULHU, ISD::UMUL_LOHI, ISD::ZERO_EXTEND }, 3371db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { ISD::MULHS, ISD::SMUL_LOHI, ISD::SIGN_EXTEND }}; 3372db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman bool isSigned = Node->getOpcode() == ISD::SMULO; 3373db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (TLI.isOperationLegalOrCustom(Ops[isSigned][0], VT)) { 3374db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::MUL, dl, VT, LHS, RHS); 3375db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(Ops[isSigned][0], dl, VT, LHS, RHS); 3376db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else if (TLI.isOperationLegalOrCustom(Ops[isSigned][1], VT)) { 3377db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(Ops[isSigned][1], dl, DAG.getVTList(VT, VT), LHS, 3378db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS); 3379db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = BottomHalf.getValue(1); 338038a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher } else if (TLI.isTypeLegal(EVT::getIntegerVT(*DAG.getContext(), 338138a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher VT.getSizeInBits() * 2))) { 338223b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT WideVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits() * 2); 3383db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman LHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, LHS); 3384db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, RHS); 3385db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, WideVT, LHS, RHS); 3386db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 3387db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(0)); 3388db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 3389db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(1)); 339038a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher } else { 339138a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher // We can fall back to a libcall with an illegal type for the MUL if we 339238a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher // have a libcall big enough. 339338a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher // Also, we can fall back to a division in some cases, but that's a big 339438a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher // performance hit in the general case. 339538a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher EVT WideVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits() * 2); 339638a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 339738a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher if (WideVT == MVT::i16) 339838a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher LC = RTLIB::MUL_I16; 339938a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher else if (WideVT == MVT::i32) 340038a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher LC = RTLIB::MUL_I32; 340138a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher else if (WideVT == MVT::i64) 340238a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher LC = RTLIB::MUL_I64; 340338a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher else if (WideVT == MVT::i128) 340438a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher LC = RTLIB::MUL_I128; 340538a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher assert(LC != RTLIB::UNKNOWN_LIBCALL && "Cannot expand this operation!"); 340638a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher LHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, LHS); 340738a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher RHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, RHS); 340895771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson 3409e3385811aaf1e7ff548c1f1edc6a85d034909a5cEric Christopher SDValue Ret = ExpandLibCall(LC, Node, isSigned); 341038a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher BottomHalf = DAG.getNode(ISD::TRUNCATE, dl, VT, Ret); 341138a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher TopHalf = DAG.getNode(ISD::SRL, dl, Ret.getValueType(), Ret, 341238a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher DAG.getConstant(VT.getSizeInBits(), TLI.getPointerTy())); 341338a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher TopHalf = DAG.getNode(ISD::TRUNCATE, dl, VT, TopHalf); 3414db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 3415db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (isSigned) { 341695771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson Tmp1 = DAG.getConstant(VT.getSizeInBits() - 1, 341795771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(BottomHalf.getValueType())); 3418db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::SRA, dl, VT, BottomHalf, Tmp1); 3419db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, Tmp1, 3420db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman ISD::SETNE); 3421db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else { 3422db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, 3423db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getConstant(0, VT), ISD::SETNE); 3424db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 3425db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(BottomHalf); 3426db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(TopHalf); 3427db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman break; 3428db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 3429f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BUILD_PAIR: { 3430e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PairTy = Node->getValueType(0); 3431f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, PairTy, Node->getOperand(0)); 3432f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = DAG.getNode(ISD::ANY_EXTEND, dl, PairTy, Node->getOperand(1)); 3433775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2 = DAG.getNode(ISD::SHL, dl, PairTy, Tmp2, 3434f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(PairTy.getSizeInBits()/2, 343595771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson TLI.getShiftAmountTy(PairTy))); 3436775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::OR, dl, PairTy, Tmp1, Tmp2)); 3437f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 3438f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 3439509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::SELECT: 3440509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 3441509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 3442509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = Node->getOperand(2); 3443775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (Tmp1.getOpcode() == ISD::SETCC) { 3444509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1.getOperand(0), Tmp1.getOperand(1), 3445509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, 3446509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<CondCodeSDNode>(Tmp1.getOperand(2))->get()); 3447775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 3448509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1, 3449509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(0, Tmp1.getValueType()), 3450509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, ISD::SETNE); 3451775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 3452509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3453509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 34544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::BR_JT: { 34554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Node->getOperand(0); 34564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Table = Node->getOperand(1); 34574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Index = Node->getOperand(2); 34584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 3459e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PTy = TLI.getPointerTy(); 3460071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner 3461071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner const TargetData &TD = *TLI.getTargetData(); 3462071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner unsigned EntrySize = 3463071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner DAG.getMachineFunction().getJumpTableInfo()->getEntrySize(TD); 34646e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach 3465071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner Index = DAG.getNode(ISD::MUL, dl, PTy, 34664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Index, DAG.getConstant(EntrySize, PTy)); 34674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Addr = DAG.getNode(ISD::ADD, dl, PTy, Index, Table); 34684bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 346923b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), EntrySize * 8); 3470a901129169194881a78b7fd8953e09f55b846d10Stuart Hastings SDValue LD = DAG.getExtLoad(ISD::SEXTLOAD, dl, PTy, Chain, Addr, 347185ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getJumpTable(), MemVT, 34721e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 34734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = LD; 347455e59c186303ff02c0be7429da3b1b36c347f164Dan Gohman if (TM.getRelocationModel() == Reloc::PIC_) { 34754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // For PIC, the sequence is: 3476775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // BRIND(load(Jumptable + index) + RelocBase) 34774bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RelocBase can be JumpTable, GOT or some sort of global base. 34784bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = DAG.getNode(ISD::ADD, dl, PTy, Addr, 34794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getPICJumpTableRelocBase(Table, DAG)); 34804bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 3481825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BRIND, dl, MVT::Other, LD.getValue(1), Addr); 34824bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 34834bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 34844bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 3485f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BRCOND: 3486f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Expand brcond's setcc into its constituent parts and create a BR_CC 3487f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Node. 3488f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = Node->getOperand(0); 3489f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(1); 3490775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (Tmp2.getOpcode() == ISD::SETCC) { 3491825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, 3492f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1, Tmp2.getOperand(2), 3493f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2.getOperand(0), Tmp2.getOperand(1), 3494f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 3495775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 3496825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, Tmp1, 3497f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getCondCode(ISD::SETNE), Tmp2, 3498f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(0, Tmp2.getValueType()), 3499f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 3500775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 3501f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(Tmp1); 3502f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 3503ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 3504ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = Node->getOperand(0); 3505ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp2 = Node->getOperand(1); 3506ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp3 = Node->getOperand(2); 3507775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling LegalizeSetCCCondCode(Node->getValueType(0), Tmp1, Tmp2, Tmp3, dl); 3508ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 3509ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // If we expanded the SETCC into an AND/OR, return the new node 3510ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman if (Tmp2.getNode() == 0) { 3511ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 3512ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3513ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 3514ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 3515ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // Otherwise, SETCC for the given comparison type must be completely 3516ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // illegal; expand it into a SELECT_CC. 3517e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 3518ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, VT, Tmp1, Tmp2, 3519ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman DAG.getConstant(1, VT), DAG.getConstant(0, VT), Tmp3); 3520ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 3521ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3522ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 3523bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::SELECT_CC: { 3524bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // LHS 3525bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(1); // RHS 3526bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(2); // True 3527bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(3); // False 3528bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue CC = Node->getOperand(4); 3529bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3530bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp1.getValueType()), 3531775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1, Tmp2, CC, dl); 3532bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3533bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp2.getNode() && "Can't legalize SELECT_CC with legal condition!"); 3534bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = DAG.getConstant(0, Tmp1.getValueType()); 3535bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman CC = DAG.getCondCode(ISD::SETNE); 3536bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, Node->getValueType(0), Tmp1, Tmp2, 3537bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Tmp4, CC); 3538bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 3539bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 3540bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 3541bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::BR_CC: { 3542bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // Chain 3543bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(2); // LHS 3544bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(3); // RHS 3545bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(1); // CC 3546bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3547bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp2.getValueType()), 3548775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2, Tmp3, Tmp4, dl); 3549fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings assert(depthCALLSEQ == 1 && "branch inside CALLSEQ_BEGIN/END?"); 3550fc52163a45b9ea147db1c20a1db3edff0f0bf652Stuart Hastings setLastCALLSEQ(DAG.getEntryNode()); 3551bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3552bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp3.getNode() && "Can't legalize BR_CC with legal condition!"); 3553bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = DAG.getConstant(0, Tmp2.getValueType()); 3554bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = DAG.getCondCode(ISD::SETNE); 3555bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::BR_CC, dl, Node->getValueType(0), Tmp1, Tmp4, Tmp2, 3556bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Node->getOperand(4)); 3557bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 3558bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 3559bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 35603f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GLOBAL_OFFSET_TABLE: 35613f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalAddress: 35623f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalTLSAddress: 35633f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ExternalSymbol: 35643f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ConstantPool: 35653f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::JumpTable: 35663f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_W_CHAIN: 35673f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_WO_CHAIN: 35683f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_VOID: 35693f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // FIXME: Custom lowering for these operations shouldn't return null! 35703f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 35713f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(SDValue(Node, i)); 35723f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 35738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 35748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 35758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::PromoteNode(SDNode *Node, 35768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 3577e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OVT = Node->getValueType(0); 35788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::UINT_TO_FP || 3579a64eb92fe305424ebde2e3de2b12160b8bf76047Eli Friedman Node->getOpcode() == ISD::SINT_TO_FP || 3580775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOpcode() == ISD::SETCC) { 35818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT = Node->getOperand(0).getValueType(); 3582775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 3583e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), OVT); 35848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 3585509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SDValue Tmp1, Tmp2, Tmp3; 35868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 35878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 35888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 35898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 35908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Zero extend the argument. 35918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0)); 35928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Perform the larger operation. 35939a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1); 35948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::CTTZ) { 35958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman //if Tmp1 == sizeinbits(NVT) then Tmp1 = sizeinbits(Old VT) 35969a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), 35978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, DAG.getConstant(NVT.getSizeInBits(), NVT), 35988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ISD::SETEQ); 35998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, 36008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OVT.getSizeInBits(), NVT), Tmp1); 36018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else if (Node->getOpcode() == ISD::CTLZ) { 36028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Tmp1 = Tmp1 - (sizeinbits(NVT) - sizeinbits(Old VT)) 36038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, NVT, Tmp1, 36048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(NVT.getSizeInBits() - 36058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT.getSizeInBits(), NVT)); 36068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 3607775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::TRUNCATE, dl, OVT, Tmp1)); 36088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 36098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: { 36108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman unsigned DiffBits = NVT.getSizeInBits() - OVT.getSizeInBits(); 3611167bea71a4bd19329a218f5e1bd8facfd90a0cf9Bill Wendling Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0)); 3612775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::BSWAP, dl, NVT, Tmp1); 3613775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SRL, dl, NVT, Tmp1, 361495771afbfd604ad003fa3723cac66c9370fed55dOwen Anderson DAG.getConstant(DiffBits, TLI.getShiftAmountTy(NVT))); 3615775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 36168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 36178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 36188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: 36198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_SINT: 36208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalFP_TO_INT(Node->getOperand(0), Node->getValueType(0), 36218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::FP_TO_SINT, dl); 36228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 36238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 36248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 36258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 36268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalINT_TO_FP(Node->getOperand(0), Node->getValueType(0), 36278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::SINT_TO_FP, dl); 36288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 36298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 3630f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::AND: 3631f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::OR: 3632c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::XOR: { 3633c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen unsigned ExtOp, TruncOp; 3634c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen if (OVT.isVector()) { 3635bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck ExtOp = ISD::BITCAST; 3636bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck TruncOp = ISD::BITCAST; 363735a389344d21178ee280c2410401b2060b5b879cChris Lattner } else { 363835a389344d21178ee280c2410401b2060b5b879cChris Lattner assert(OVT.isInteger() && "Cannot promote logic operation"); 3639c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen ExtOp = ISD::ANY_EXTEND; 3640c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen TruncOp = ISD::TRUNCATE; 3641c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3642c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Promote each of the values to the new type. 3643c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 3644c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3645c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Perform the larger operation, then convert back 3646775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1, Tmp2); 3647775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(TruncOp, dl, OVT, Tmp1)); 3648f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3649c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3650c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::SELECT: { 3651509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned ExtOp, TruncOp; 36524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Node->getValueType(0).isVector()) { 3653bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck ExtOp = ISD::BITCAST; 3654bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck TruncOp = ISD::BITCAST; 36554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else if (Node->getValueType(0).isInteger()) { 3656509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::ANY_EXTEND; 3657509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::TRUNCATE; 3658509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } else { 3659509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::FP_EXTEND; 3660509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::FP_ROUND; 3661509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3662509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 3663509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Promote each of the values to the new type. 3664509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3665509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(2)); 3666509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Perform the larger operation, then round down. 3667509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp1, Tmp2, Tmp3); 3668509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (TruncOp != ISD::FP_ROUND) 3669775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1); 3670509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 3671775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1, 3672509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(0)); 3673775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 3674509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3675c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3676509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 3677509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 3678509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 3679509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3680509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Cast the two input vectors. 3681bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp1 = DAG.getNode(ISD::BITCAST, dl, NVT, Node->getOperand(0)); 3682bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp2 = DAG.getNode(ISD::BITCAST, dl, NVT, Node->getOperand(1)); 3683509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3684509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Convert the shuffle mask to the right # elements. 3685775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = ShuffleWithNarrowerEltType(NVT, OVT, dl, Tmp1, Tmp2, Mask); 3686bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp1 = DAG.getNode(ISD::BITCAST, dl, OVT, Tmp1); 3687509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3688509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3689509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3690ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 369178d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen unsigned ExtOp = ISD::FP_EXTEND; 369278d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen if (NVT.isInteger()) { 369378d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ISD::CondCode CCCode = 369478d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen cast<CondCodeSDNode>(Node->getOperand(2))->get(); 369578d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ExtOp = isSignedIntSetCC(CCCode) ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND; 3696ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 369778d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 369878d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3699ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(DAG.getNode(ISD::SETCC, dl, Node->getValueType(0), 3700ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1, Tmp2, Node->getOperand(2))); 3701ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3702ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 37038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 37048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 37058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 37063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// SelectionDAG::Legalize - This is the entry point for the file. 37073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 3708714efc63d4319b771d89a95aa7a42d400f03d8c9Dan Gohmanvoid SelectionDAG::Legalize(CodeGenOpt::Level OptLevel) { 37093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// run - This is the main entry point to this class. 37103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 37111fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(*this, OptLevel).LegalizeDAG(); 37123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 37133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 3714