LegalizeDAG.cpp revision 38a18261b97a0b7e0ed75b1c8edd81ec9bd01085
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 646831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// LastCALLSEQ_END - This keeps track of the CALLSEQ_END node that has been 656831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// legalized. We use this to ensure that calls are properly serialized 666831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// against each other, including inserted libcalls. 67475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LastCALLSEQ_END; 68fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner enum LegalizeAction { 7068a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Legal, // The target natively supports this operation. 7168a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Promote, // This operation should be executed in a larger type. 72d74ea2bbd8bb630331f35ead42d385249bd42af8Chris Lattner Expand // Try to expand this to other ops, otherwise use a libcall. 733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner }; 74fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// ValueTypeActions - This is a bitvector that contains two bits for each 763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// value type, where the two bits correspond to the LegalizeAction enum. 773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// This can be queried with "getTypeAction(VT)". 7868a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner TargetLowering::ValueTypeActionImpl ValueTypeActions; 793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// LegalizedNodes - For nodes that are of legal width, and that have more 813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// than one use, this map indicates what regularized operand to use. This 823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// allows us to avoid legalizing the same thing more than once. 83475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue> LegalizedNodes; 843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 85475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void AddLegalizedOperand(SDValue From, SDValue To) { 8669a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(From, To)); 8769a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner // If someone requests legalization of the new node, return itself. 8869a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner if (From != To) 8969a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(To, To)); 908afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner } 918afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner 923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerpublic: 931fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(SelectionDAG &DAG, CodeGenOpt::Level ol); 943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// getTypeAction - Return how we should legalize values of this type, either 963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// it is already legal or we need to expand it into multiple registers of 973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// smaller integer type, or we need to promote it to a larger type. 98e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson LegalizeAction getTypeAction(EVT VT) const { 99aafe626c7fa9f99150cccd27d0151a2cf7c8c00bChris Lattner return (LegalizeAction)ValueTypeActions.getTypeAction(VT); 1003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// isTypeLegal - Return true if this type is legal on this target. 1033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 104e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson bool isTypeLegal(EVT VT) const { 1053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return getTypeAction(VT) == Legal; 1063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner void LegalizeDAG(); 1093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 110456a93afcec7740c45cafa8354317f7b17987a6dChris Lattnerprivate: 111c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// LegalizeOp - We know that the specified value has a legal type. 112c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// Recursively ensure that the operands have legal types, then return the 113c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// result. 114475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LegalizeOp(SDValue O); 115fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1167ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue OptimizeFloatStore(StoreSDNode *ST); 1177ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 1186867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// PerformInsertVectorEltInMemory - Some target cannot handle a variable 1196867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 1206867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// is necessary to spill the vector being inserted into to memory, perform 1216867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// the insert there, and then read the result back. 122475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue PerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, 1233f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 1243f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, 1253f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 126826695281344e3a4c4d44d73dd155107aafd689bDan Gohman 1275a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1285a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// performs the same shuffe in terms of order or result bytes, but on a type 1295a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// whose vector element type is narrower than the original shuffle type. 1305a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 131e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl, 1326e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach SDValue N1, SDValue N2, 1335a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SmallVectorImpl<int> &Mask) const; 134fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 135c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner bool LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 13600755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo); 1376831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 138e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson void LegalizeSetCCCondCode(EVT VT, SDValue &LHS, SDValue &RHS, SDValue &CC, 139775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DebugLoc dl); 140fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 14147b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman SDValue ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, bool isSigned); 142e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach std::pair<SDValue, SDValue> ExpandChainLibCall(RTLIB::Libcall LC, 143e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach SDNode *Node, bool isSigned); 144f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman SDValue ExpandFPLibCall(SDNode *Node, RTLIB::Libcall Call_F32, 145f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, RTLIB::Libcall Call_F80, 146f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128); 1478983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov SDValue ExpandIntLibCall(SDNode *Node, bool isSigned, 1488983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I8, 1498983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I16, 1508983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I32, 1518983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I64, 152f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128); 153475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 154e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue EmitStackConvert(SDValue SrcOp, EVT SlotVT, EVT DestVT, DebugLoc dl); 155475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandBUILD_VECTOR(SDNode *Node); 156475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandSCALAR_TO_VECTOR(SDNode *Node); 1574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman void ExpandDYNAMIC_STACKALLOC(SDNode *Node, 1584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results); 1594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue ExpandFCOPYSIGN(SDNode *Node); 160e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue ExpandLegalINT_TO_FP(bool isSigned, SDValue LegalOp, EVT DestVT, 161af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 162e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue PromoteLegalINT_TO_FP(SDValue LegalOp, EVT DestVT, bool isSigned, 163af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 164e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue PromoteLegalFP_TO_INT(SDValue LegalOp, EVT DestVT, bool isSigned, 165af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 166475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1678a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBSWAP(SDValue Op, DebugLoc dl); 1688a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBitCount(unsigned Opc, SDValue Op, DebugLoc dl); 169475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1703d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue ExpandExtractFromVectorThroughStack(SDValue Op); 1717ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue ExpandVectorBuildThroughStack(SDNode* Node); 1728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 173e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach std::pair<SDValue, SDValue> ExpandAtomic(SDNode *Node); 174e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 1758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void ExpandNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void PromoteNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner}; 1783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1805a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1815a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// performs the same shuffe in terms of order or result bytes, but on a type 1825a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// whose vector element type is narrower than the original shuffle type. 1839008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman/// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 1846e9926108a69efbc11f1cadf947e98500e4d4228Jim GrosbachSDValue 1856e9926108a69efbc11f1cadf947e98500e4d4228Jim GrosbachSelectionDAGLegalize::ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl, 1865a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue N1, SDValue N2, 1879008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVectorImpl<int> &Mask) const { 1885a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumMaskElts = VT.getVectorNumElements(); 1895a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumDestElts = NVT.getVectorNumElements(); 1909008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman unsigned NumEltsGrowth = NumDestElts / NumMaskElts; 1919008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1929008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(NumEltsGrowth && "Cannot promote to vector type with fewer elts!"); 1939008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1949008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman if (NumEltsGrowth == 1) 1959008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &Mask[0]); 1966e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach 1979008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVector<int, 8> NewMask; 1985a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman for (unsigned i = 0; i != NumMaskElts; ++i) { 1999008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman int Idx = Mask[i]; 2009008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman for (unsigned j = 0; j != NumEltsGrowth; ++j) { 2016e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach if (Idx < 0) 2029008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(-1); 2039008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman else 2049008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(Idx * NumEltsGrowth + j); 2054352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner } 20615684b29552393553524171bff1913e750f390f8Rafael Espindola } 2075a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman assert(NewMask.size() == NumDestElts && "Non-integer NumEltsGrowth?"); 2089008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(TLI.isShuffleMaskLegal(NewMask, NVT) && "Shuffle not legal?"); 2099008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &NewMask[0]); 2104352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 2114352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 2125aa4977fba97e816b5735f0bc53f16a46b24de63Bill WendlingSelectionDAGLegalize::SelectionDAGLegalize(SelectionDAG &dag, 2131fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman CodeGenOpt::Level ol) 21455e59c186303ff02c0be7429da3b1b36c347f164Dan Gohman : TM(dag.getTarget()), TLI(dag.getTargetLoweringInfo()), 21555e59c186303ff02c0be7429da3b1b36c347f164Dan Gohman DAG(dag), OptLevel(ol), 2161fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman ValueTypeActions(TLI.getValueTypeActions()) { 217825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE && 2183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Too many value types for ValueTypeActions to hold!"); 2193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAGLegalize::LegalizeDAG() { 2226831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LastCALLSEQ_END = DAG.getEntryNode(); 223e5ab34e05d701da042619bf540046efc3c7bc41fMon P Wang 224ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // The legalize process is inherently a bottom-up recursive process (users 225ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // legalize their uses before themselves). Given infinite stack space, we 226ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // could just start legalizing on the root and traverse the whole graph. In 227ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // practice however, this causes us to run out of stack space on large basic 22832fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // blocks. To avoid this problem, compute an ordering of the nodes where each 22932fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // node is only legalized after all of its operands are legalized. 230f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman DAG.AssignTopologicalOrder(); 231f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman for (SelectionDAG::allnodes_iterator I = DAG.allnodes_begin(), 2327896c9f436a4eda5ec15e882a7505ba482a2fcd0Chris Lattner E = prior(DAG.allnodes_end()); I != llvm::next(E); ++I) 233b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(I, 0)); 23432fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner 23532fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // Finally, it's possible the root changed. Get the new root. 236475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue OldRoot = DAG.getRoot(); 23732fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner assert(LegalizedNodes.count(OldRoot) && "Root didn't get legalized?"); 23832fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner DAG.setRoot(LegalizedNodes[OldRoot]); 2393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LegalizedNodes.clear(); 2413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remove dead nodes now. 243190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner DAG.RemoveDeadNodes(); 2443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2466831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 2476831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// FindCallEndFromCallStart - Given a chained node that is part of a call 2486831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_END node that terminates the call sequence. 249a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastingsstatic SDNode *FindCallEndFromCallStart(SDNode *Node, int depth = 0) { 25056500edc7a2599e651d39df71a714e1e255ed96aStuart Hastings // Nested CALLSEQ_START/END constructs aren't yet legal, 25156500edc7a2599e651d39df71a714e1e255ed96aStuart Hastings // but we can DTRT and handle them correctly here. 252a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings if (Node->getOpcode() == ISD::CALLSEQ_START) 253a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings depth++; 2542965e69e040d86002128b91a439eb9bfc6b83df1Stuart Hastings else if (Node->getOpcode() == ISD::CALLSEQ_END) { 25556500edc7a2599e651d39df71a714e1e255ed96aStuart Hastings depth--; 25656500edc7a2599e651d39df71a714e1e255ed96aStuart Hastings if (depth == 0) 25756500edc7a2599e651d39df71a714e1e255ed96aStuart Hastings return Node; 25856500edc7a2599e651d39df71a714e1e255ed96aStuart Hastings } 2596831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->use_empty()) 2606831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; // No CallSeqEnd 261fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2626831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // The chain is usually at the end. 263475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue TheChain(Node, Node->getNumValues()-1); 264825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) { 2656831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Sometimes it's at the beginning. 266475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, 0); 267825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) { 2686831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Otherwise, hunt for it. 2696831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 1, e = Node->getNumValues(); i != e; ++i) 270825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Node->getValueType(i) == MVT::Other) { 271475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, i); 2726831a815999dde4cf801e2076e66b4943964daf2Chris Lattner break; 2736831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 274fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 275fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, we walked into a node without a chain. 276825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) 2776831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2786831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2796831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 280fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2816831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (SDNode::use_iterator UI = Node->use_begin(), 2826831a815999dde4cf801e2076e66b4943964daf2Chris Lattner E = Node->use_end(); UI != E; ++UI) { 283fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2846831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Make sure to only follow users of our token chain. 2858968450305c28444edc3c272d8752a8db0c2f34aDan Gohman SDNode *User = *UI; 2866831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) 2876831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (User->getOperand(i) == TheChain) 288a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings if (SDNode *Result = FindCallEndFromCallStart(User, depth)) 2896831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 2906831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2916831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2926831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 2936831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 294fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// FindCallStartFromCallEnd - Given a chained node that is part of a call 2956831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_START node that initiates the call sequence. 2966831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallStartFromCallEnd(SDNode *Node) { 297a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings int nested = 0; 2986831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(Node && "Didn't find callseq_start for a call??"); 299a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings while (Node->getOpcode() != ISD::CALLSEQ_START || nested) { 300a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings Node = Node->getOperand(0).getNode(); 301a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings assert(Node->getOperand(0).getValueType() == MVT::Other && 302a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings "Node doesn't have a token chain argument!"); 303a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings switch (Node->getOpcode()) { 304a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings default: 305a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings break; 306a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings case ISD::CALLSEQ_START: 307a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings if (!nested) 308a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings return Node; 309a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings nested--; 310a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings break; 311a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings case ISD::CALLSEQ_END: 312a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings nested++; 313a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings break; 314a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings } 315a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings } 316a304d02791b3e0297a9d545e0c602c9f916691f9Stuart Hastings return 0; 3176831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 3186831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3196831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// LegalizeAllNodesNotLeadingTo - Recursively walk the uses of N, looking to 320fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// see if any uses can reach Dest. If no dest operands can get to dest, 3216831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// legalize them, legalize ourself, and return false, otherwise, return true. 322c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 323c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// Keep track of the nodes we fine that actually do lead to Dest in 324c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// NodesLeadingTo. This avoids retraversing them exponential number of times. 325c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 326c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattnerbool SelectionDAGLegalize::LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 32700755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo) { 3286831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (N == Dest) return true; // N certainly leads to Dest :) 329fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 330c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // If we've already processed this node and it does lead to Dest, there is no 331c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // need to reprocess it. 332c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (NodesLeadingTo.count(N)) return true; 333fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3346831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the first result of this node has been already legalized, then it cannot 3356831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // reach N. 33674807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman if (LegalizedNodes.count(SDValue(N, 0))) return false; 337fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3386831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node has not already been legalized. Check and legalize all 3396831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // operands. If none lead to Dest, then we can legalize this node. 3406831a815999dde4cf801e2076e66b4943964daf2Chris Lattner bool OperandsLeadToDest = false; 3416831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) 3426831a815999dde4cf801e2076e66b4943964daf2Chris Lattner OperandsLeadToDest |= // If an operand leads to Dest, so do we. 3436e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach LegalizeAllNodesNotLeadingTo(N->getOperand(i).getNode(), Dest, 3446e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach NodesLeadingTo); 3456831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 346c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (OperandsLeadToDest) { 347c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo.insert(N); 348c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner return true; 349c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 3506831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3516831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node looks safe, legalize it and return false. 352b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(N, 0)); 3536831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return false; 3546831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 3556831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3569f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// ExpandConstantFP - Expands the ConstantFP node to an integer constant or 3579f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// a load from the constant pool. 358475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanstatic SDValue ExpandConstantFP(ConstantFPSDNode *CFP, bool UseCP, 3590d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman SelectionDAG &DAG, const TargetLowering &TLI) { 360004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng bool Extend = false; 36133c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen DebugLoc dl = CFP->getDebugLoc(); 362004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 363004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // If a FP immediate is precise when represented as a float and if the 364004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // target can do an extending load from float to double, we put it into 365004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // the constant pool as a float, even if it's is statically typed as a 366aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // double. This shrinks FP constants and canonicalizes them for targets where 367aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // an FP extending load is the same cost as a normal load (such as on the x87 368aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // fp stack or PPC FP unit). 369e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = CFP->getValueType(0); 3704fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman ConstantFP *LLVMC = const_cast<ConstantFP*>(CFP->getConstantFPValue()); 3719f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng if (!UseCP) { 372825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert((VT == MVT::f64 || VT == MVT::f32) && "Invalid type expansion"); 3737111b02c734c992b8c97d9918118768026dad79eDale Johannesen return DAG.getConstant(LLVMC->getValueAPF().bitcastToAPInt(), 374825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (VT == MVT::f64) ? MVT::i64 : MVT::i32); 375279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng } 376279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng 377e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OrigVT = VT; 378e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SVT = VT; 379825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson while (SVT != MVT::f32) { 380825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SVT = (MVT::SimpleValueType)(SVT.getSimpleVT().SimpleTy - 1); 3817720cb3823d5b5868f9b88b0127277820edcb562Dan Gohman if (ConstantFPSDNode::isValueValidForType(SVT, CFP->getValueAPF()) && 382ef12057737229452c17983faa20857dba441ef05Evan Cheng // Only do this if the target has a native EXTLOAD instruction from 383ef12057737229452c17983faa20857dba441ef05Evan Cheng // smaller type. 3840329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng TLI.isLoadExtLegal(ISD::EXTLOAD, SVT) && 385aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner TLI.ShouldShrinkFPConstant(OrigVT)) { 38623b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *SType = SVT.getTypeForEVT(*DAG.getContext()); 387baf3c404409d5e47b13984a7f95bfbd6d1f2e79eOwen Anderson LLVMC = cast<ConstantFP>(ConstantExpr::getFPTrunc(LLVMC, SType)); 388ef12057737229452c17983faa20857dba441ef05Evan Cheng VT = SVT; 389ef12057737229452c17983faa20857dba441ef05Evan Cheng Extend = true; 390ef12057737229452c17983faa20857dba441ef05Evan Cheng } 391004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng } 392004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 393475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(LLVMC, TLI.getPointerTy()); 3941606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 395ef12057737229452c17983faa20857dba441ef05Evan Cheng if (Extend) 396bcc8017c738e92d9c1af221b11c4916cb524184eEvan Cheng return DAG.getExtLoad(ISD::EXTLOAD, OrigVT, dl, 397bcc8017c738e92d9c1af221b11c4916cb524184eEvan Cheng DAG.getEntryNode(), 39885ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner CPIdx, MachinePointerInfo::getConstantPool(), 39985ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner VT, false, false, Alignment); 40033c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen return DAG.getLoad(OrigVT, dl, DAG.getEntryNode(), CPIdx, 40185ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getConstantPool(), false, false, 4021e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 403004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng} 404004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 405f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedStore - Expands an unaligned store to 2 half-size stores. 406f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 407475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedStore(StoreSDNode *ST, SelectionDAG &DAG, 4080d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman const TargetLowering &TLI) { 409475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = ST->getChain(); 410475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = ST->getBasePtr(); 411475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Val = ST->getValue(); 412e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Val.getValueType(); 413907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen int Alignment = ST->getAlignment(); 414bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = ST->getDebugLoc(); 41583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ST->getMemoryVT().isFloatingPoint() || 41683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands ST->getMemoryVT().isVector()) { 41723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT intVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits()); 41805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 41905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a bitconvert of the value to the integer type of the 42005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // same size, then a (misaligned) int store. 42105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // FIXME: Does not handle truncating floating point stores! 422bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue Result = DAG.getNode(ISD::BITCAST, dl, intVT, Val); 423da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner return DAG.getStore(Chain, dl, Result, Ptr, ST->getPointerInfo(), 424da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->isVolatile(), ST->isNonTemporal(), Alignment); 42505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } else { 42605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do a (aligned) store to a stack slot, then copy from the stack slot 42705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // to the final destination using (unaligned) integer loads and stores. 428e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT StoredVT = ST->getMemoryVT(); 429e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT RegVT = 430adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng TLI.getRegisterType(*DAG.getContext(), 431adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT::getIntegerVT(*DAG.getContext(), 432adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng StoredVT.getSizeInBits())); 43305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned StoredBytes = StoredVT.getSizeInBits() / 8; 43405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned RegBytes = RegVT.getSizeInBits() / 8; 43505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned NumRegs = (StoredBytes + RegBytes - 1) / RegBytes; 43605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 437fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Make sure the stack slot is also aligned for the register type. 438fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands SDValue StackPtr = DAG.CreateStackTemporary(StoredVT, RegVT); 439fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 440fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Perform the original store, only redirected to the stack slot. 441fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Store = DAG.getTruncStore(Chain, dl, 442ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Val, StackPtr, MachinePointerInfo(), 443ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner StoredVT, false, false, 0); 44405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 44505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SmallVector<SDValue, 8> Stores; 44605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned Offset = 0; 44705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 44805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do all but one copies using the full register width. 44905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands for (unsigned i = 1; i < NumRegs; i++) { 45005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Load one integer register's worth from the stack slot. 451ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Load = DAG.getLoad(RegVT, dl, Store, StackPtr, 452ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(), 4531e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 45405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Store it to the final location. Remember the store. 455bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, Ptr, 456ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner ST->getPointerInfo().getWithOffset(Offset), 4571e559443a17d1b335f697551c6263ba60d5dd827David Greene ST->isVolatile(), ST->isNonTemporal(), 45805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 45905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Increment the pointers. 46005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Offset += RegBytes; 461bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 46205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Increment); 463bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 46405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 46505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 466fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // The last store may be partial. Do a truncating store. On big-endian 467fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // machines this requires an extending load from the stack slot to ensure 468fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // that the bits are in the right place. 469adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 470adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng 8 * (StoredBytes - Offset)); 471fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 472fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Load from the stack slot. 473bcc8017c738e92d9c1af221b11c4916cb524184eEvan Cheng SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, RegVT, dl, Store, StackPtr, 4743d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MachinePointerInfo(), 4753d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MemVT, false, false, 0); 47605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 477bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, Ptr, 4783d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ST->getPointerInfo() 4793d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner .getWithOffset(Offset), 480fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MemVT, ST->isVolatile(), 4811e559443a17d1b335f697551c6263ba60d5dd827David Greene ST->isNonTemporal(), 48205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 48305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The order of the stores doesn't matter - say it with a TokenFactor. 484825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 48505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Stores.size()); 48605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 487907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 48883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(ST->getMemoryVT().isInteger() && 48983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands !ST->getMemoryVT().isVector() && 490907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen "Unaligned store of unknown type."); 491f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Get the half-size VT 492bceddbdc919fc2ca7bc8c3911586ba93367686f0Ken Dyck EVT NewStoredVT = ST->getMemoryVT().getHalfSizedIntegerVT(*DAG.getContext()); 49383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands int NumBits = NewStoredVT.getSizeInBits(); 494f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int IncrementSize = NumBits / 8; 495f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 496f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Divide the stored value in two parts. 497475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 498475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = Val; 499bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Hi = DAG.getNode(ISD::SRL, dl, VT, Val, ShiftAmount); 500f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 501f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Store the two parts 502475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store1, Store2; 503bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store1 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Lo:Hi, Ptr, 504da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo(), NewStoredVT, 5051e559443a17d1b335f697551c6263ba60d5dd827David Greene ST->isVolatile(), ST->isNonTemporal(), Alignment); 506bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 507f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 508dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands Alignment = MinAlign(Alignment, IncrementSize); 509bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store2 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Hi:Lo, Ptr, 510da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo().getWithOffset(IncrementSize), 5111e559443a17d1b335f697551c6263ba60d5dd827David Greene NewStoredVT, ST->isVolatile(), ST->isNonTemporal(), 5121e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 513f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 514825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Store1, Store2); 515f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 516f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 517f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedLoad - Expands an unaligned load to 2 half-size loads. 518f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 519475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedLoad(LoadSDNode *LD, SelectionDAG &DAG, 520e9530ecae4897fe8157bd4d7616043bd8c0484e2Dan Gohman const TargetLowering &TLI) { 521475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = LD->getChain(); 522475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = LD->getBasePtr(); 523e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = LD->getValueType(0); 524e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT LoadedVT = LD->getMemoryVT(); 525bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = LD->getDebugLoc(); 52683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (VT.isFloatingPoint() || VT.isVector()) { 52723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT intVT = EVT::getIntegerVT(*DAG.getContext(), LoadedVT.getSizeInBits()); 52805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 52905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a (misaligned) integer load of the same size, 53005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // then bitconvert to floating point or vector. 531ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue newLoad = DAG.getLoad(intVT, dl, Chain, Ptr, LD->getPointerInfo(), 532ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->isVolatile(), 5331e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), LD->getAlignment()); 534bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue Result = DAG.getNode(ISD::BITCAST, dl, LoadedVT, newLoad); 53505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (VT.isFloatingPoint() && LoadedVT != VT) 536bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, VT, Result); 537907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen 53805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Ops[] = { Result, Chain }; 539bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 540ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner } 541bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 542ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Copy the value to a (aligned) stack slot using (unaligned) integer 543ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // loads and stores, then do a (aligned) load from the stack slot. 544ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner EVT RegVT = TLI.getRegisterType(*DAG.getContext(), intVT); 545ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner unsigned LoadedBytes = LoadedVT.getSizeInBits() / 8; 546ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner unsigned RegBytes = RegVT.getSizeInBits() / 8; 547ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner unsigned NumRegs = (LoadedBytes + RegBytes - 1) / RegBytes; 548ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 549ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Make sure the stack slot is also aligned for the register type. 550ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue StackBase = DAG.CreateStackTemporary(LoadedVT, RegVT); 551ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 552ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 553ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SmallVector<SDValue, 8> Stores; 554ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue StackPtr = StackBase; 555ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner unsigned Offset = 0; 556ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 557ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Do all but one copies using the full register width. 558ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner for (unsigned i = 1; i < NumRegs; i++) { 559ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Load one integer register's worth from the original location. 560ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Load = DAG.getLoad(RegVT, dl, Chain, Ptr, 561ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(Offset), 562ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->isVolatile(), LD->isNonTemporal(), 563ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MinAlign(LD->getAlignment(), Offset)); 56405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 565ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, StackPtr, 5666229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner MachinePointerInfo(), false, false, 0)); 567ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Increment the pointers. 568ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Offset += RegBytes; 569ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 570ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 571ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Increment); 57205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 573ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 574ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // The last copy may be partial. Do an extending load. 575ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 576ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 8 * (LoadedBytes - Offset)); 577ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, RegVT, dl, Chain, Ptr, 578ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(Offset), 579ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MemVT, LD->isVolatile(), 580ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->isNonTemporal(), 581ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MinAlign(LD->getAlignment(), Offset)); 582ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Follow the load with a store to the stack slot. Remember the store. 583ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // On big-endian machines this requires a truncating store to ensure 584ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // that the bits end up in the right place. 585ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, StackPtr, 586ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(), MemVT, 587ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, 0)); 588ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 589ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // The order of the stores doesn't matter - say it with a TokenFactor. 590ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 591ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Stores.size()); 592ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 593ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Finally, perform the original load only redirected to the stack slot. 594ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Load = DAG.getExtLoad(LD->getExtensionType(), VT, dl, TF, StackBase, 595ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(), LoadedVT, false, false, 0); 596ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner 597ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner // Callers expect a MERGE_VALUES node. 598ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Ops[] = { Load, TF }; 599ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner return DAG.getMergeValues(Ops, 2, dl); 600907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 60183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(LoadedVT.isInteger() && !LoadedVT.isVector() && 602e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner "Unaligned load of unsupported type."); 603e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner 6048155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // Compute the new VT that is half the size of the old one. This is an 6058155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // integer MVT. 60683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned NumBits = LoadedVT.getSizeInBits(); 607e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewLoadedVT; 60823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson NewLoadedVT = EVT::getIntegerVT(*DAG.getContext(), NumBits/2); 609e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner NumBits >>= 1; 610fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 611e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned Alignment = LD->getAlignment(); 612e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned IncrementSize = NumBits / 8; 613f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ISD::LoadExtType HiExtType = LD->getExtensionType(); 614f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 615f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If the original load is NON_EXTLOAD, the hi part load must be ZEXTLOAD. 616f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (HiExtType == ISD::NON_EXTLOAD) 617f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio HiExtType = ISD::ZEXTLOAD; 618f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 619f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Load the value in two parts 620475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 621f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (TLI.isLittleEndian()) { 622ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Lo = DAG.getExtLoad(ISD::ZEXTLOAD, VT, dl, Chain, Ptr, LD->getPointerInfo(), 623ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner NewLoadedVT, LD->isVolatile(), 6241e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), Alignment); 625bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 626f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 627ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Hi = DAG.getExtLoad(HiExtType, VT, dl, Chain, Ptr, 628ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 629ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner NewLoadedVT, LD->isVolatile(), 6306e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach LD->isNonTemporal(), MinAlign(Alignment,IncrementSize)); 631f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 632ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Hi = DAG.getExtLoad(HiExtType, VT, dl, Chain, Ptr, LD->getPointerInfo(), 633ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner NewLoadedVT, LD->isVolatile(), 6341e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), Alignment); 635bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 636f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 637ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Lo = DAG.getExtLoad(ISD::ZEXTLOAD, VT, dl, Chain, Ptr, 638ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 639ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner NewLoadedVT, LD->isVolatile(), 6406e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach LD->isNonTemporal(), MinAlign(Alignment,IncrementSize)); 641f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 642f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 643f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // aggregate the two parts 644475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 645bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::SHL, dl, VT, Hi, ShiftAmount); 646bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::OR, dl, VT, Result, Lo); 647f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 648825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 649f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Hi.getValue(1)); 650f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 651475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Result, TF }; 652bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 653f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 654912095becac923ff614d7b07728eb345ada67765Evan Cheng 6556867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// PerformInsertVectorEltInMemory - Some target cannot handle a variable 6566867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 6576867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// is necessary to spill the vector being inserted into to memory, perform 6586867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// the insert there, and then read the result back. 659475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize:: 660bb5da918545efb54857a09c983a5a7f22a7e04d4Dale JohannesenPerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, SDValue Idx, 661bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl) { 662475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1 = Vec; 663475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp2 = Val; 664475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = Idx; 665fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 6666867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // If the target doesn't support this, we have to spill the input vector 6676867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // to a temporary stack slot, update the element, then reload it. This is 6686867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // badness. We could also load the value into a vector register (either 6696867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // with a "move to register" or "extload into register" instruction, then 6706867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // permute it into place, if the idx is a constant and if the idx is 6716867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // supported by the target. 672e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp1.getValueType(); 673e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 674e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT IdxVT = Tmp3.getValueType(); 675e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PtrVT = TLI.getPointerTy(); 676475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(VT); 6776867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 678ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex(); 679ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 6806867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the vector. 681bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Tmp1, StackPtr, 68285ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getFixedStack(SPFI), 6831e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 6846867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 6856867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Truncate or zero extend offset to target pointer type. 6868e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands unsigned CastOpc = IdxVT.bitsGT(PtrVT) ? ISD::TRUNCATE : ISD::ZERO_EXTEND; 687bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(CastOpc, dl, PtrVT, Tmp3); 6886867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Add the offset to the index. 689aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned EltSize = EltVT.getSizeInBits()/8; 690bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(ISD::MUL, dl, IdxVT, Tmp3,DAG.getConstant(EltSize, IdxVT)); 691bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue StackPtr2 = DAG.getNode(ISD::ADD, dl, IdxVT, Tmp3, StackPtr); 6926867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the scalar value. 69385ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner Ch = DAG.getTruncStore(Ch, dl, Tmp2, StackPtr2, MachinePointerInfo(), EltVT, 6941e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 6956867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Load the updated vector. 696bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getLoad(VT, dl, Ch, StackPtr, 69785ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getFixedStack(SPFI), false, false, 0); 6986867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman} 6996867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 700e9f1015d1f184a51aaadfd03be0846bd5e7d08a2Mon P Wang 7013f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanSDValue SelectionDAGLegalize:: 7023f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, SDValue Idx, DebugLoc dl) { 7033f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (ConstantSDNode *InsertPos = dyn_cast<ConstantSDNode>(Idx)) { 7043f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // SCALAR_TO_VECTOR requires that the type of the value being inserted 7053f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // match the element type of the vector being created, except for 7063f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // integers in which case the inserted value can be over width. 707e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = Vec.getValueType().getVectorElementType(); 7083f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (Val.getValueType() == EltVT || 7093f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman (EltVT.isInteger() && Val.getValueType().bitsGE(EltVT))) { 7103f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ScVec = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, 7113f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Vec.getValueType(), Val); 7123f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 7133f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman unsigned NumElts = Vec.getValueType().getVectorNumElements(); 7143f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // We generate a shuffle of InVec and ScVec, so the shuffle mask 7153f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // should be 0,1,2,3,4,5... with the appropriate element replaced with 7163f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // elt 0 of the RHS. 7173f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SmallVector<int, 8> ShufOps; 7183f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0; i != NumElts; ++i) 7193f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman ShufOps.push_back(i != InsertPos->getZExtValue() ? i : NumElts); 7203f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 7213f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return DAG.getVectorShuffle(Vec.getValueType(), dl, Vec, ScVec, 7223f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman &ShufOps[0]); 7233f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 7243f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 7253f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return PerformInsertVectorEltInMemory(Vec, Val, Idx, dl); 7263f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman} 7273f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 7287ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::OptimizeFloatStore(StoreSDNode* ST) { 7297ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Turn 'store float 1.0, Ptr' -> 'store int 0x12345678, Ptr' 7307ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: We shouldn't do this for TargetConstantFP's. 7317ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: move this to the DAG Combiner! Note that we can't regress due 7327ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // to phase ordering between legalized code and the dag combiner. This 7337ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // probably means that we need to integrate dag combiner and legalizer 7347ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // together. 7357ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We generally can't do this one for long doubles. 7367ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp1 = ST->getChain(); 7377ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp2 = ST->getBasePtr(); 7387ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp3; 7397ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Alignment = ST->getAlignment(); 7407ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bool isVolatile = ST->isVolatile(); 7411e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = ST->isNonTemporal(); 7427ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = ST->getDebugLoc(); 7437ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(ST->getValue())) { 744825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (CFP->getValueType(0) == MVT::f32 && 745825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson getTypeAction(MVT::i32) == Legal) { 7467ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF(). 7477ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bitcastToAPInt().zextOrTrunc(32), 748825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::i32); 749da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 750da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner isVolatile, isNonTemporal, Alignment); 751da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner } 752bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 753da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner if (CFP->getValueType(0) == MVT::f64) { 7547ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // If this target supports 64-bit registers, do a single 64-bit store. 755825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (getTypeAction(MVT::i64) == Legal) { 7567ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF().bitcastToAPInt(). 757825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson zextOrTrunc(64), MVT::i64); 758da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 759da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner isVolatile, isNonTemporal, Alignment); 760da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner } 761bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 762da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner if (getTypeAction(MVT::i32) == Legal && !ST->isVolatile()) { 7637ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, if the target supports 32-bit registers, use 2 32-bit 7647ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // stores. If the target supports neither 32- nor 64-bits, this 7657ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // xform is certainly not worth it. 7667ef3d178660b82d1571757e49f44b004d772a116Eli Friedman const APInt &IntVal =CFP->getValueAPF().bitcastToAPInt(); 76740f8f6264d5af2c38e797e0dc59827cd231e8ff7Jay Foad SDValue Lo = DAG.getConstant(IntVal.trunc(32), MVT::i32); 768825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Hi = DAG.getConstant(IntVal.lshr(32).trunc(32), MVT::i32); 7697ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (TLI.isBigEndian()) std::swap(Lo, Hi); 7707ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 771da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Lo = DAG.getStore(Tmp1, dl, Lo, Tmp2, ST->getPointerInfo(), isVolatile, 772da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner isNonTemporal, Alignment); 7737ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 7747ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DAG.getIntPtrConstant(4)); 775da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Hi = DAG.getStore(Tmp1, dl, Hi, Tmp2, 776da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo().getWithOffset(4), 7771e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, MinAlign(Alignment, 4U)); 7787ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 779825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 7807ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7817ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7827ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7837ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return SDValue(); 7847ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 7857ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 786a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// LegalizeOp - We know that the specified value has a legal type, and 787a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// that its operands are legal. Now ensure that the operation itself 788a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// is legal, recursively ensuring that the operands' operations remain 789a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// legal. 790475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) { 79109ec1b058331aadb29a348091611d23892b5c492Chris Lattner if (Op.getOpcode() == ISD::TargetConstant) // Allow illegal target nodes. 79209ec1b058331aadb29a348091611d23892b5c492Chris Lattner return Op; 793fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 794ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif SDNode *Node = Op.getNode(); 7957d2ad624fa749a6d3edac0d94e9c107989c16304Dale Johannesen DebugLoc dl = Node->getDebugLoc(); 796e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner 7971fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 7981fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman assert(getTypeAction(Node->getValueType(i)) == Legal && 7991fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 8001fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman 8011fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 8026e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach assert((isTypeLegal(Node->getOperand(i).getValueType()) || 8031fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman Node->getOperand(i).getOpcode() == ISD::TargetConstant) && 8041fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 8053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 80645982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 80745982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 808475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 809e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (I != LegalizedNodes.end()) return I->second; 8103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 811475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 812475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result = Op; 813456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner bool isCustom = false; 814fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 8158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Figure out the correct action; the way to query this varies by opcode 8168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::LegalizeAction Action; 8178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman bool SimpleFinishLegalizing = true; 8183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 8198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_W_CHAIN: 8208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_WO_CHAIN: 8218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_VOID: 8228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAARG: 8238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STACKSAVE: 824825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Action = TLI.getOperationAction(Node->getOpcode(), MVT::Other); 8258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 8278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 8288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 8298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 8308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType()); 8318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: 8338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 834e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT InnerType = cast<VTSDNode>(Node->getOperand(1))->getVT(); 8358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), InnerType); 8368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 8383be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SELECT_CC: 8393be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SETCC: 8403be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::BR_CC: { 8413be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CCOperand = Node->getOpcode() == ISD::SELECT_CC ? 4 : 8423be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getOpcode() == ISD::SETCC ? 2 : 1; 8433be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CompareOperand = Node->getOpcode() == ISD::BR_CC ? 2 : 0; 844e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(CompareOperand).getValueType(); 8453be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman ISD::CondCode CCCode = 8463be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman cast<CondCodeSDNode>(Node->getOperand(CCOperand))->get(); 8473be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getCondCodeAction(CCCode, OpVT); 8483be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Action == TargetLowering::Legal) { 8493be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Node->getOpcode() == ISD::SELECT_CC) 8503be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 8513be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getValueType(0)); 8523be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman else 8533be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), OpVT); 8543be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8553be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 8563be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::LOAD: 8588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STORE: 859ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: Model these properly. LOAD and STORE are complicated, and 860ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // STORE expects the unlegalized operand in some cases. 861ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 862ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_START: 8648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_END: 865ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: This shouldn't be necessary. These nodes have special properties 866ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // dealing with the recursive nature of legalization. Removing this 867ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // special case should be done as part of making LegalizeDAG non-recursive. 868ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 869ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: 8718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 8728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SADDO: 8738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SSUBO: 8748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UADDO: 8758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::USUBO: 8768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SMULO: 8778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UMULO: 8788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FPOWI: 8798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 8808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 8818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 882c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach case ISD::EH_SJLJ_SETJMP: 883c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach case ISD::EH_SJLJ_LONGJMP: 884e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach case ISD::EH_SJLJ_DISPATCHSETUP: 885f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // These operations lie about being legal: when they claim to be legal, 886f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // they should actually be expanded. 8878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Action == TargetLowering::Legal) 8898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Expand; 8908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAMPOLINE: 8928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 8938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 8944bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // These operations lie about being legal: when they claim to be legal, 8954bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // they should actually be custom-lowered. 8964bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8974bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Action == TargetLowering::Legal) 8984bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TargetLowering::Custom; 8998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BUILD_VECTOR: 901b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // A weird case: legalization for BUILD_VECTOR never legalizes the 902b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // operands! 903b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // FIXME: This really sucks... changing it isn't semantically incorrect, 904b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // but it massively pessimizes the code for floating-point BUILD_VECTORs 905b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // because ConstantFP operands get legalized into constant pool loads 906b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // before the BUILD_VECTOR code can see them. It doesn't usually bite, 907b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // though, because BUILD_VECTORS usually get lowered into other nodes 908b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // which get legalized properly. 9098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SimpleFinishLegalizing = false; 910948c1b1cda280c6428dbeaa03a6c2c559dbb93f4Chris Lattner break; 9113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 912d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner if (Node->getOpcode() >= ISD::BUILTIN_OP_END) { 9138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Legal; 9148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 9158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 9168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 919d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner 9208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (SimpleFinishLegalizing) { 9218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVector<SDValue, 8> Ops, ResultVals; 9228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 9238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops.push_back(LegalizeOp(Node->getOperand(i))); 9248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 9258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: break; 9268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR: 9278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRIND: 9288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_JT: 9298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_CC: 9308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRCOND: 9318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Branches tweak the chain to include LastCALLSEQ_END 932825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ops[0] = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Ops[0], 9338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END); 9348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[0] = LegalizeOp(Ops[0]); 9358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 9368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SHL: 9388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRL: 9398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRA: 9408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTL: 9418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTR: 9428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Legalizing shifts/rotates requires adjusting the shift amount 9438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // to the appropriate width. 9448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!Ops[1].getValueType().isVector()) 9458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[1] = LegalizeOp(DAG.getShiftAmountOperand(Ops[1])); 9468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 947db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SRL_PARTS: 948db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SRA_PARTS: 949db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SHL_PARTS: 950db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman // Legalizing shifts/rotates requires adjusting the shift amount 951db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman // to the appropriate width. 952db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman if (!Ops[2].getValueType().isVector()) 953db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman Ops[2] = LegalizeOp(DAG.getShiftAmountOperand(Ops[2])); 9542c9489d6e96d99f77b6c31919805b5e61954deb2Dan Gohman break; 9558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 957027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), Ops.data(), 958027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Ops.size()), 0); 9598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Action) { 9608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Legal: 961d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 9628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Result.getValue(i)); 9638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Custom: 9658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FIXME: The handling for custom lowering with multiple results is 9668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // a complete mess. 9678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = TLI.LowerOperation(Result, DAG); 9688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Tmp1.getNode()) { 9698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) { 9708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (e == 1) 9718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1); 9728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 9738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1.getValue(i)); 9748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FALL THROUGH 9798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Expand: 9808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ExpandNode(Result.getNode(), ResultVals); 9818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Promote: 9838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman PromoteNode(Result.getNode(), ResultVals); 9848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!ResultVals.empty()) { 9878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = ResultVals.size(); i != e; ++i) { 9888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (ResultVals[i] != SDValue(Node, i)) 9898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals[i] = LegalizeOp(ResultVals[i]); 9908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman AddLegalizedOperand(SDValue(Node, i), ResultVals[i]); 9918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman return ResultVals[Op.getResNo()]; 993d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner } 9948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 9978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: 998e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#ifndef NDEBUG 999993aacedfdc3f156f667b4efa280ee79eab3b898David Greene dbgs() << "NODE: "; 1000993aacedfdc3f156f667b4efa280ee79eab3b898David Greene Node->dump( &DAG); 1001993aacedfdc3f156f667b4efa280ee79eab3b898David Greene dbgs() << "\n"; 1002e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#endif 100335a389344d21178ee280c2410401b2060b5b879cChris Lattner assert(0 && "Do not know how to legalize this operator!"); 100498ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman 1005b2827b0901162169bb2692b77a839c9767849134Chris Lattner case ISD::BUILD_VECTOR: 1006b2827b0901162169bb2692b77a839c9767849134Chris Lattner switch (TLI.getOperationAction(ISD::BUILD_VECTOR, Node->getValueType(0))) { 100735a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 10082332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner case TargetLowering::Custom: 10092332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Tmp3 = TLI.LowerOperation(Result, DAG); 1010ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()) { 10112332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Result = Tmp3; 10122332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 10132332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 10142332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner // FALLTHROUGH 1015ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner case TargetLowering::Expand: 1016ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandBUILD_VECTOR(Result.getNode()); 1017b2827b0901162169bb2692b77a839c9767849134Chris Lattner break; 10182332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 10192332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 10206831a815999dde4cf801e2076e66b4943964daf2Chris Lattner case ISD::CALLSEQ_START: { 1021f22432282c78a65828cd9da94028e8b798858180Stuart Hastings static int depth = 0; 10226831a815999dde4cf801e2076e66b4943964daf2Chris Lattner SDNode *CallEnd = FindCallEndFromCallStart(Node); 1023fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10246831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Recursively Legalize all of the inputs of the call end that do not lead 10256831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // to this call start. This ensures that any libcalls that need be inserted 10266831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // are inserted *before* the CALLSEQ_START. 102700755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner {SmallPtrSet<SDNode*, 32> NodesLeadingTo; 10286831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = CallEnd->getNumOperands(); i != e; ++i) 1029ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif LegalizeAllNodesNotLeadingTo(CallEnd->getOperand(i).getNode(), Node, 1030c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo); 1031c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 10326831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 1033ee7f8b5f058174a55372159bc23088198e5f5991Jim Grosbach // Now that we have legalized all of the inputs (which may have inserted 1034ee7f8b5f058174a55372159bc23088198e5f5991Jim Grosbach // libcalls), create the new CALLSEQ_START node. 10356831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 10366831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 1037ee7f8b5f058174a55372159bc23088198e5f5991Jim Grosbach // Merge in the last call to ensure that this call starts after the last 10386831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // call ended. 1039f22432282c78a65828cd9da94028e8b798858180Stuart Hastings if (LastCALLSEQ_END.getOpcode() != ISD::EntryToken && depth == 0) { 1040825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 1041ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp1, LastCALLSEQ_END); 1042b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner Tmp1 = LegalizeOp(Tmp1); 1043b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner } 1044fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10456831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Do not try to legalize the target-specific arguments (#1+). 10466831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Tmp1 != Node->getOperand(0)) { 1047475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 10486831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Ops[0] = Tmp1; 10496e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), &Ops[0], 10506e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach Ops.size()), Result.getResNo()); 10516831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1052fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10536831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Remember that the CALLSEQ_START is legalized. 10544b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(0), Result); 10554b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) // If this has a flag result, remember it. 10564b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 1057fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10586831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Now that the callseq_start and all of the non-call nodes above this call 1059fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // sequence have been legalized, legalize the call itself. During this 10606831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // process, no libcalls can/will be inserted, guaranteeing that no calls 10616831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // can overlap. 1062f22432282c78a65828cd9da94028e8b798858180Stuart Hastings 1063f22432282c78a65828cd9da94028e8b798858180Stuart Hastings SDValue Saved_LastCALLSEQ_END = LastCALLSEQ_END ; 10646831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Note that we are selecting this call! 1065475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LastCALLSEQ_END = SDValue(CallEnd, 0); 1066fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1067f22432282c78a65828cd9da94028e8b798858180Stuart Hastings depth++; 10686831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call, starting from the CALLSEQ_END. 10696831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(LastCALLSEQ_END); 1070f22432282c78a65828cd9da94028e8b798858180Stuart Hastings depth--; 1071f22432282c78a65828cd9da94028e8b798858180Stuart Hastings assert(depth >= 0 && "Un-matched CALLSEQ_START?"); 1072f22432282c78a65828cd9da94028e8b798858180Stuart Hastings if (depth > 0) 1073f22432282c78a65828cd9da94028e8b798858180Stuart Hastings LastCALLSEQ_END = Saved_LastCALLSEQ_END; 10746831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 10756831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 107616cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner case ISD::CALLSEQ_END: 10776831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the CALLSEQ_START node hasn't been legalized first, legalize it. This 10786831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // will cause this node to be legalized as well as handling libcalls right. 1079ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (LastCALLSEQ_END.getNode() != Node) { 1080475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LegalizeOp(SDValue(FindCallStartFromCallEnd(Node), 0)); 1081475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 10826831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(I != LegalizedNodes.end() && 10836831a815999dde4cf801e2076e66b4943964daf2Chris Lattner "Legalizing the call start should have legalized this node!"); 10846831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return I->second; 10856831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1086fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1087fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, the call start has been legalized and everything is going 10886831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // according to plan. Just legalize ourselves normally here. 10893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 109070814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // Do not try to legalize the target-specific arguments (#1+), except for 109170814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // an optional flag input. 1092f1b4eafbfec976f939ec0ea3e8acf91cef5363e3Chris Lattner if (Node->getOperand(Node->getNumOperands()-1).getValueType() != MVT::Glue){ 109370814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0)) { 1094475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 109570814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 1096027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 1097027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman &Ops[0], Ops.size()), 1098027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result.getResNo()); 109970814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 110070814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } else { 110170814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(Node->getNumOperands()-1)); 110270814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0) || 110370814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 != Node->getOperand(Node->getNumOperands()-1)) { 1104475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 110570814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 110670814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops.back() = Tmp2; 1107027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 1108027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman &Ops[0], Ops.size()), 1109027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result.getResNo()); 111070814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 11116a5428934ba6159c1acc541944332e51a6cfa59aChris Lattner } 11126831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // This finishes up call legalization. 11134b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner // If the CALLSEQ_END node has a flag, remember that we legalized it. 1114475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Result.getValue(0)); 11154b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) 1116475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Result.getValue(1)); 111799a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Result.getValue(Op.getResNo()); 1118f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::LOAD: { 1119466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng LoadSDNode *LD = cast<LoadSDNode>(Node); 1120466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = LegalizeOp(LD->getChain()); // Legalize the chain. 1121466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp2 = LegalizeOp(LD->getBasePtr()); // Legalize the base pointer. 11222d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 1123466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng ISD::LoadExtType ExtType = LD->getExtensionType(); 1124466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng if (ExtType == ISD::NON_EXTLOAD) { 1125e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1126027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 1127027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Tmp1, Tmp2, LD->getOffset()), 1128027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result.getResNo()); 1129466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = Result.getValue(0); 1130466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = Result.getValue(1); 1131fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1132466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng switch (TLI.getOperationAction(Node->getOpcode(), VT)) { 113335a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 1134f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1135f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned load and the target doesn't support it, 1136f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1137bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) { 1138e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = LD->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1139e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 1140f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (LD->getAlignment() < ABIAlignment){ 11416e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 1142debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson DAG, TLI); 1143f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp3 = Result.getOperand(0); 1144f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp4 = Result.getOperand(1); 1145907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp3 = LegalizeOp(Tmp3); 1146907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp4 = LegalizeOp(Tmp4); 1147f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1148f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1149f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 1150466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Custom: 1151466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = TLI.LowerOperation(Tmp3, DAG); 1152ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) { 1153466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = LegalizeOp(Tmp1); 1154466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1155466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1156466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1157466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Promote: { 1158466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Only promote a load of vector type to another. 115983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Cannot promote this load!"); 1160466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Change base type to a different vector type. 1161e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), VT); 1162466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng 1163ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Tmp1 = DAG.getLoad(NVT, dl, Tmp1, Tmp2, LD->getPointerInfo(), 11641e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isVolatile(), LD->isNonTemporal(), 11651e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->getAlignment()); 1166bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp3 = LegalizeOp(DAG.getNode(ISD::BITCAST, dl, VT, Tmp1)); 116741f6cbbeb21d7d4376b8c0302b9766c3e43be5f2Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1168466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1169f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 1170466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1171fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Since loads produce two values, make sure to remember that we 1172466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // legalized both of them. 1173475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp3); 1174475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp4); 117599a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Op.getResNo() ? Tmp4 : Tmp3; 11763d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } 1177bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 11783d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner EVT SrcVT = LD->getMemoryVT(); 11793d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned SrcWidth = SrcVT.getSizeInBits(); 11803d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned Alignment = LD->getAlignment(); 11813d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner bool isVolatile = LD->isVolatile(); 11823d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner bool isNonTemporal = LD->isNonTemporal(); 11833d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 11843d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (SrcWidth != SrcVT.getStoreSizeInBits() && 11853d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Some targets pretend to have an i1 loading operation, and actually 11863d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // load an i8. This trick is correct for ZEXTLOAD because the top 7 11873d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // bits are guaranteed to be zero; it helps the optimizers understand 11883d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // that these bits are zero. It is also useful for EXTLOAD, since it 11893d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // tells the optimizers that those bits are undefined. It would be 11903d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // nice to have an effective generic way of getting these benefits... 11913d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Until such a way is found, don't insist on promoting i1 here. 11923d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner (SrcVT != MVT::i1 || 11933d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner TLI.getLoadExtAction(ExtType, MVT::i1) == TargetLowering::Promote)) { 11943d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Promote to a byte-sized load if not loading an integral number of 11953d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // bytes. For example, promote EXTLOAD:i20 -> EXTLOAD:i24. 11963d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned NewWidth = SrcVT.getStoreSizeInBits(); 11973d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner EVT NVT = EVT::getIntegerVT(*DAG.getContext(), NewWidth); 11983d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner SDValue Ch; 11993d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12003d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // The extra bits are guaranteed to be zero, since we stored them that 12013d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // way. A zext load from NVT thus automatically gives zext from SrcVT. 12023d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12033d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ISD::LoadExtType NewExtType = 12043d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ExtType == ISD::ZEXTLOAD ? ISD::ZEXTLOAD : ISD::EXTLOAD; 12053d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12063d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getExtLoad(NewExtType, Node->getValueType(0), dl, 12073d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1, Tmp2, LD->getPointerInfo(), 12083d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner NVT, isVolatile, isNonTemporal, Alignment); 12093d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12103d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Ch = Result.getValue(1); // The chain. 12113d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12123d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (ExtType == ISD::SEXTLOAD) 12133d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Having the top bits zero doesn't help when sign extending. 12143d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 12153d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result.getValueType(), 12163d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result, DAG.getValueType(SrcVT)); 12173d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner else if (ExtType == ISD::ZEXTLOAD || NVT == Result.getValueType()) 12183d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // All the top bits are guaranteed to be zero - inform the optimizers. 12193d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getNode(ISD::AssertZext, dl, 12203d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result.getValueType(), Result, 12213d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG.getValueType(SrcVT)); 12223d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12233d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(Result); 12243d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Ch); 12253d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } else if (SrcWidth & (SrcWidth - 1)) { 12263d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // If not loading a power-of-2 number of bits, expand as two loads. 12273d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(!SrcVT.isVector() && "Unsupported extload!"); 12283d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned RoundWidth = 1 << Log2_32(SrcWidth); 12293d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(RoundWidth < SrcWidth); 12303d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned ExtraWidth = SrcWidth - RoundWidth; 12313d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(ExtraWidth < RoundWidth); 12323d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 12333d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner "Load size not an integral number of bytes!"); 12343d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 12353d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 12363d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner SDValue Lo, Hi, Ch; 12373d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned IncrementSize; 12383d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12393d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (TLI.isLittleEndian()) { 12403d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // EXTLOAD:i24 -> ZEXTLOAD:i16 | (shl EXTLOAD@+2:i8, 16) 12413d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Load the bottom RoundWidth bits. 12423d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Lo = DAG.getExtLoad(ISD::ZEXTLOAD, Node->getValueType(0), dl, 12433d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1, Tmp2, 12443d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo(), RoundVT, isVolatile, 12453d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner isNonTemporal, Alignment); 12463d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12473d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Load the remaining ExtraWidth bits. 12483d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner IncrementSize = RoundWidth / 8; 12493d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 12503d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG.getIntPtrConstant(IncrementSize)); 12513d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi = DAG.getExtLoad(ExtType, Node->getValueType(0), dl, Tmp1, Tmp2, 12523d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 12533d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ExtraVT, isVolatile, isNonTemporal, 12543d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MinAlign(Alignment, IncrementSize)); 12553d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12563d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Build a factor node to remember that this load is independent of 12573d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // the other one. 12583d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 12593d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi.getValue(1)); 12603d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12613d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Move the top bits to the right place. 12623d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 12633d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG.getConstant(RoundWidth, TLI.getShiftAmountTy())); 12643d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12653d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Join the hi and lo parts. 12663d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 12673d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } else { 12683d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Big endian - avoid unaligned loads. 12693d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // EXTLOAD:i24 -> (shl EXTLOAD:i16, 8) | ZEXTLOAD@+2:i8 12703d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Load the top RoundWidth bits. 12713d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi = DAG.getExtLoad(ExtType, Node->getValueType(0), dl, 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)); 12793d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Lo = DAG.getExtLoad(ISD::ZEXTLOAD, 12803d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Node->getValueType(0), dl, Tmp1, Tmp2, 12813d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo().getWithOffset(IncrementSize), 12823d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ExtraVT, isVolatile, isNonTemporal, 12833d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MinAlign(Alignment, IncrementSize)); 12843d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12853d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Build a factor node to remember that this load is independent of 12863d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // the other one. 12873d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 12883d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi.getValue(1)); 12893d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 12903d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Move the top bits to the right place. 12913d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 12923d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy())); 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 } 1297f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 12983d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(Result); 12993d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Ch); 13003d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } else { 13013d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner switch (TLI.getLoadExtAction(ExtType, SrcVT)) { 13023d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner default: assert(0 && "This action is not supported yet!"); 13033d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case TargetLowering::Custom: 13043d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner isCustom = true; 13053d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // FALLTHROUGH 13063d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case TargetLowering::Legal: 13073d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 13083d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1, Tmp2, LD->getOffset()), 13093d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result.getResNo()); 13103d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = Result.getValue(0); 13113d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = Result.getValue(1); 13123d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 13133d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (isCustom) { 13143d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp3 = TLI.LowerOperation(Result, DAG); 13153d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (Tmp3.getNode()) { 13163d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(Tmp3); 13173d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Tmp3.getValue(1)); 13183d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } 1319f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 13203d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // If this is an unaligned load and the target doesn't support it, 13213d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // expand it. 13223d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) { 13233d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner const Type *Ty = 13243d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getMemoryVT().getTypeForEVT(*DAG.getContext()); 13253d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned ABIAlignment = 13263d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner TLI.getTargetData()->getABITypeAlignment(Ty); 13273d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (LD->getAlignment() < ABIAlignment){ 13283d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 13293d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner DAG, TLI); 13303d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = Result.getOperand(0); 13313d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = Result.getOperand(1); 13323d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(Tmp1); 13333d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Tmp2); 1334f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1335f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 13363d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner } 13373d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner break; 13383d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case TargetLowering::Expand: 13393d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (!TLI.isLoadExtLegal(ISD::EXTLOAD, SrcVT) && isTypeLegal(SrcVT)) { 13403d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner SDValue Load = DAG.getLoad(SrcVT, dl, Tmp1, Tmp2, 13413d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getPointerInfo(), 13423d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->isVolatile(), LD->isNonTemporal(), 13433d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getAlignment()); 13443d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner unsigned ExtendOp; 13453d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner switch (ExtType) { 13463d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case ISD::EXTLOAD: 13473d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ExtendOp = (SrcVT.isFloatingPoint() ? 13483d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ISD::FP_EXTEND : ISD::ANY_EXTEND); 1349f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 13503d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case ISD::SEXTLOAD: ExtendOp = ISD::SIGN_EXTEND; break; 13513d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner case ISD::ZEXTLOAD: ExtendOp = ISD::ZERO_EXTEND; break; 13523d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner default: llvm_unreachable("Unexpected extend load type!"); 1353f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 13543d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getNode(ExtendOp, dl, Node->getValueType(0), Load); 13553d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(Result); // Relegalize new nodes. 13563d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Load.getValue(1)); 1357466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1358466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 13593d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // FIXME: This does not work for vectors on most targets. Sign- and 13603d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // zero-extend operations are currently folded into extending loads, 13613d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // whether they are legal or not, and then we end up here without any 13623d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // support for legalizing them. 13633d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner assert(ExtType != ISD::EXTLOAD && 13643d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner "EXTLOAD should always be supported!"); 13653d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Turn the unsupported load into an EXTLOAD followed by an explicit 13663d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // zero/sign extend inreg. 13673d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result = DAG.getExtLoad(ISD::EXTLOAD, Node->getValueType(0), dl, 13683d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1, Tmp2, LD->getPointerInfo(), SrcVT, 13693d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->isVolatile(), LD->isNonTemporal(), 13703d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner LD->getAlignment()); 13713d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner SDValue ValRes; 13723d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner if (ExtType == ISD::SEXTLOAD) 13733d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner ValRes = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 13743d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result.getValueType(), 13753d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Result, DAG.getValueType(SrcVT)); 13763d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner else 1377dd11ea4a372b992775f67b64fb703edf2de0d27bDan Gohman ValRes = DAG.getZeroExtendInReg(Result, dl, SrcVT.getScalarType()); 13783d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp1 = LegalizeOp(ValRes); // Relegalize new nodes. 13793d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Tmp2 = LegalizeOp(Result.getValue(1)); // Relegalize new nodes. 13803d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner break; 13819d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth } 138201ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 13833d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner 13843d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // Since loads produce two values, make sure to remember that we legalized 13853d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner // both of them. 13863d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner AddLegalizedOperand(SDValue(Node, 0), Tmp1); 13873d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner AddLegalizedOperand(SDValue(Node, 1), Tmp2); 13883d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner return Op.getResNo() ? Tmp2 : Tmp1; 138901ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 1390f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::STORE: { 13918b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng StoreSDNode *ST = cast<StoreSDNode>(Node); 13928b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = LegalizeOp(ST->getChain()); // Legalize the chain. 13938b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp2 = LegalizeOp(ST->getBasePtr()); // Legalize the pointer. 1394d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman unsigned Alignment = ST->getAlignment(); 1395d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman bool isVolatile = ST->isVolatile(); 13961e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = ST->isNonTemporal(); 13978b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 13988b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng if (!ST->isTruncatingStore()) { 13997ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (SDNode *OptStore = OptimizeFloatStore(ST).getNode()) { 14007ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Result = SDValue(OptStore, 0); 14017ef3d178660b82d1571757e49f44b004d772a116Eli Friedman break; 1402d93d46ee7e0a0e539d42139b85c71b2b8c3968feChris Lattner } 1403fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1404957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman { 14058b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp3 = LegalizeOp(ST->getValue()); 1406027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 1407027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Tmp1, Tmp3, Tmp2, 1408027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman ST->getOffset()), 1409027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result.getResNo()); 14108b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 1411e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp3.getValueType(); 14128b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng switch (TLI.getOperationAction(ISD::STORE, VT)) { 141335a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 1414f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1415f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned store and the target doesn't support it, 1416f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1417bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) { 1418e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext()); 14196e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach unsigned ABIAlignment= TLI.getTargetData()->getABITypeAlignment(Ty); 1420f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (ST->getAlignment() < ABIAlignment) 1421e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), 1422e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng DAG, TLI); 1423f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1424f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 14258b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Custom: 14268b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = TLI.LowerOperation(Result, DAG); 1427ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) Result = Tmp1; 14288b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 14298b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Promote: 143083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Unknown legal promote case!"); 1431bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp3 = DAG.getNode(ISD::BITCAST, dl, 14328b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng TLI.getTypeToPromoteTo(ISD::STORE, VT), Tmp3); 1433ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, 1434da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo(), isVolatile, 14351e559443a17d1b335f697551c6263ba60d5dd827David Greene isNonTemporal, Alignment); 14368b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 14378b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 14382efce0a589e2a688a1a06b5dc2ed0db32ae79924Chris Lattner break; 1439f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 14408b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } else { 1441957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman Tmp3 = LegalizeOp(ST->getValue()); 14427e857201f387d004571e6058e2ea709163500f38Duncan Sands 1443e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT StVT = ST->getMemoryVT(); 144483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned StWidth = StVT.getSizeInBits(); 14457e857201f387d004571e6058e2ea709163500f38Duncan Sands 144683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (StWidth != StVT.getStoreSizeInBits()) { 14477e857201f387d004571e6058e2ea709163500f38Duncan Sands // Promote to a byte-sized store with upper bits zero if not 14487e857201f387d004571e6058e2ea709163500f38Duncan Sands // storing an integral number of bytes. For example, promote 14497e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i1 X -> TRUNCSTORE:i8 (and X, 1) 1450adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT NVT = EVT::getIntegerVT(*DAG.getContext(), 1451adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng StVT.getStoreSizeInBits()); 1452ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getZeroExtendInReg(Tmp3, dl, StVT); 1453da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Result = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 1454da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner NVT, isVolatile, isNonTemporal, Alignment); 14557e857201f387d004571e6058e2ea709163500f38Duncan Sands } else if (StWidth & (StWidth - 1)) { 14567e857201f387d004571e6058e2ea709163500f38Duncan Sands // If not storing a power-of-2 number of bits, expand as two stores. 1457bceddbdc919fc2ca7bc8c3911586ba93367686f0Ken Dyck assert(!StVT.isVector() && "Unsupported truncstore!"); 14587e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned RoundWidth = 1 << Log2_32(StWidth); 14597e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(RoundWidth < StWidth); 14607e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned ExtraWidth = StWidth - RoundWidth; 14617e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(ExtraWidth < RoundWidth); 14627e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 14637e857201f387d004571e6058e2ea709163500f38Duncan Sands "Store size not an integral number of bytes!"); 146423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 146523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 1466475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 14677e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned IncrementSize; 14687e857201f387d004571e6058e2ea709163500f38Duncan Sands 14697e857201f387d004571e6058e2ea709163500f38Duncan Sands if (TLI.isLittleEndian()) { 14707e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 X, TRUNCSTORE@+2:i8 (srl X, 16) 14717e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the bottom RoundWidth bits. 1472da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 1473da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner RoundVT, 14741e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, Alignment); 14757e857201f387d004571e6058e2ea709163500f38Duncan Sands 14767e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14777e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1478ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14797e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1480ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 14817e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(RoundWidth, TLI.getShiftAmountTy())); 1482da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, 1483da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo().getWithOffset(IncrementSize), 1484da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ExtraVT, isVolatile, isNonTemporal, 14857e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 14867e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 14877e857201f387d004571e6058e2ea709163500f38Duncan Sands // Big endian - avoid unaligned stores. 14887e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 (srl X, 8), TRUNCSTORE@+2:i8 X 14897e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the top RoundWidth bits. 1490ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 14917e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy())); 1492da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getPointerInfo(), 1493da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner RoundVT, isVolatile, isNonTemporal, Alignment); 14947e857201f387d004571e6058e2ea709163500f38Duncan Sands 14957e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14967e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1497ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14987e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1499da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, 1500da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ST->getPointerInfo().getWithOffset(IncrementSize), 1501da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner ExtraVT, isVolatile, isNonTemporal, 15027e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 15037e857201f387d004571e6058e2ea709163500f38Duncan Sands } 1504c7029805ef35ce9805931067b841e6af11db382eChris Lattner 15057e857201f387d004571e6058e2ea709163500f38Duncan Sands // The order of the stores doesn't matter. 1506825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Result = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 15077e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 15087e857201f387d004571e6058e2ea709163500f38Duncan Sands if (Tmp1 != ST->getChain() || Tmp3 != ST->getValue() || 15097e857201f387d004571e6058e2ea709163500f38Duncan Sands Tmp2 != ST->getBasePtr()) 1510027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result = SDValue(DAG.UpdateNodeOperands(Result.getNode(), 1511027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Tmp1, Tmp3, Tmp2, 1512027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman ST->getOffset()), 1513027657db7cf60bcbf40403496d7e4a170f9ce1ecDan Gohman Result.getResNo()); 15147e857201f387d004571e6058e2ea709163500f38Duncan Sands 15157e857201f387d004571e6058e2ea709163500f38Duncan Sands switch (TLI.getTruncStoreAction(ST->getValue().getValueType(), StVT)) { 151635a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 15177e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Legal: 15187e857201f387d004571e6058e2ea709163500f38Duncan Sands // If this is an unaligned store and the target doesn't support it, 15197e857201f387d004571e6058e2ea709163500f38Duncan Sands // expand it. 1520bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) { 1521e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext()); 15226e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach unsigned ABIAlignment= TLI.getTargetData()->getABITypeAlignment(Ty); 15237e857201f387d004571e6058e2ea709163500f38Duncan Sands if (ST->getAlignment() < ABIAlignment) 1524e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), 1525e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng DAG, TLI); 15267e857201f387d004571e6058e2ea709163500f38Duncan Sands } 15277e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 15287e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Custom: 15297e857201f387d004571e6058e2ea709163500f38Duncan Sands Result = TLI.LowerOperation(Result, DAG); 15307e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 15317e857201f387d004571e6058e2ea709163500f38Duncan Sands case Expand: 15327e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i16 i32 -> STORE i16 15337e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(isTypeLegal(StVT) && "Do not know how to expand this store!"); 1534ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getNode(ISD::TRUNCATE, dl, StVT, Tmp3); 1535da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getPointerInfo(), 1536da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner isVolatile, isNonTemporal, Alignment); 15377e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 1538f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 15398b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 15403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 15413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 1542f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 154345b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 15444ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner assert(Result.getValueType() == Op.getValueType() && 15454ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner "Bad legalization!"); 1546fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1547456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner // Make sure that the generated code is itself legal. 1548456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner if (Result != Op) 1549456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner Result = LegalizeOp(Result); 15503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 155145982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 155245982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 155345982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner AddLegalizedOperand(Op, Result); 15543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return Result; 15553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 15563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 15573d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli FriedmanSDValue SelectionDAGLegalize::ExpandExtractFromVectorThroughStack(SDValue Op) { 15583d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Vec = Op.getOperand(0); 15593d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Idx = Op.getOperand(1); 15603d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DebugLoc dl = Op.getDebugLoc(); 15613d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Store the value to a temporary stack slot, then LOAD the returned part. 15623d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue StackPtr = DAG.CreateStackTemporary(Vec.getValueType()); 15636229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Vec, StackPtr, 15646229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner MachinePointerInfo(), false, false, 0); 15653d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15663d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Add the offset to the index. 1567aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned EltSize = 1568aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman Vec.getValueType().getVectorElementType().getSizeInBits()/8; 15693d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::MUL, dl, Idx.getValueType(), Idx, 15703d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DAG.getConstant(EltSize, Idx.getValueType())); 15713d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15723d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman if (Idx.getValueType().bitsGT(TLI.getPointerTy())) 15733d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::TRUNCATE, dl, TLI.getPointerTy(), Idx); 15743d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman else 15753d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::ZERO_EXTEND, dl, TLI.getPointerTy(), Idx); 15763d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15773d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman StackPtr = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, StackPtr); 15783d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 1579c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman if (Op.getValueType().isVector()) 1580ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner return DAG.getLoad(Op.getValueType(), dl, Ch, StackPtr,MachinePointerInfo(), 15811e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 15823d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner return DAG.getExtLoad(ISD::EXTLOAD, Op.getValueType(), dl, Ch, StackPtr, 15833d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner MachinePointerInfo(), 15843d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner Vec.getValueType().getVectorElementType(), 15853d6ccfba314ed38e4506dae2781a060e9a3e07acChris Lattner false, false, 0); 15863d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman} 15873d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15887ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::ExpandVectorBuildThroughStack(SDNode* Node) { 15897ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We can't handle this case efficiently. Allocate a sufficiently 15907ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // aligned object on the stack, store each element into it, then load 15917ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // the result as a vector. 15927ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Create the stack frame object. 1593e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 15945b8bce11d60694a651965cf019b9cb5d84ed3b90Dale Johannesen EVT EltVT = VT.getVectorElementType(); 15957ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15967ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue FIPtr = DAG.CreateStackTemporary(VT); 1597ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int FI = cast<FrameIndexSDNode>(FIPtr.getNode())->getIndex(); 1598ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo PtrInfo = MachinePointerInfo::getFixedStack(FI); 15997ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16007ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Emit a store of each element to the stack slot. 16017ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SmallVector<SDValue, 8> Stores; 1602aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned TypeByteSize = EltVT.getSizeInBits() / 8; 16037ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Store (in the right endianness) the elements to memory. 16047ef3d178660b82d1571757e49f44b004d772a116Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 16057ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Ignore undef elements. 16067ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (Node->getOperand(i).getOpcode() == ISD::UNDEF) continue; 16077ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16087ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Offset = TypeByteSize*i; 16097ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16107ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Idx = DAG.getConstant(Offset, FIPtr.getValueType()); 16117ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Idx = DAG.getNode(ISD::ADD, dl, FIPtr.getValueType(), FIPtr, Idx); 16127ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16139949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman // If the destination vector element type is narrower than the source 16149949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman // element type, only store the bits necessary. 16159949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman if (EltVT.bitsLT(Node->getOperand(i).getValueType().getScalarType())) { 16165b8bce11d60694a651965cf019b9cb5d84ed3b90Dale Johannesen Stores.push_back(DAG.getTruncStore(DAG.getEntryNode(), dl, 1617ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Node->getOperand(i), Idx, 1618ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner PtrInfo.getWithOffset(Offset), 16191e559443a17d1b335f697551c6263ba60d5dd827David Greene EltVT, false, false, 0)); 1620eb38ebf15c326a5bb45ca9da6329cdf19ad6df95Mon P Wang } else 16216e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach Stores.push_back(DAG.getStore(DAG.getEntryNode(), dl, 1622ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Node->getOperand(i), Idx, 1623ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner PtrInfo.getWithOffset(Offset), 16241e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0)); 16257ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 16267ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16277ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue StoreChain; 16287ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (!Stores.empty()) // Not all undef elements? 1629825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson StoreChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 16307ef3d178660b82d1571757e49f44b004d772a116Eli Friedman &Stores[0], Stores.size()); 16317ef3d178660b82d1571757e49f44b004d772a116Eli Friedman else 16327ef3d178660b82d1571757e49f44b004d772a116Eli Friedman StoreChain = DAG.getEntryNode(); 16337ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16347ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Result is a load from the stack slot. 1635ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner return DAG.getLoad(VT, dl, StoreChain, FIPtr, PtrInfo, false, false, 0); 16367ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 16377ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 16384bc8c718218159fe410462f6e3670e7cb76c0c04Eli FriedmanSDValue SelectionDAGLegalize::ExpandFCOPYSIGN(SDNode* Node) { 16394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 16404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = Node->getOperand(0); 16414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = Node->getOperand(1); 16425d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands 16435d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Get the sign bit of the RHS. First obtain a value that has the same 16445d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // sign as the sign bit, i.e. negative if and only if the sign bit is 1. 16454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignBit; 16465d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands EVT FloatVT = Tmp2.getValueType(); 16475d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands EVT IVT = EVT::getIntegerVT(*DAG.getContext(), FloatVT.getSizeInBits()); 16484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (isTypeLegal(IVT)) { 16495d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Convert to an integer with the same sign bit. 1650bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SignBit = DAG.getNode(ISD::BITCAST, dl, IVT, Tmp2); 16514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else { 16525d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Store the float to memory, then load the sign part out as an integer. 16535d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands MVT LoadTy = TLI.getPointerTy(); 16545d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // First create a temporary that is aligned for both the load and store. 16555d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SDValue StackPtr = DAG.CreateStackTemporary(FloatVT, LoadTy); 16565d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Then store the float to it. 16574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Ch = 16586229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner DAG.getStore(DAG.getEntryNode(), dl, Tmp2, StackPtr, MachinePointerInfo(), 16591e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 16605d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands if (TLI.isBigEndian()) { 16615d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands assert(FloatVT.isByteSized() && "Unsupported floating point type!"); 16625d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Load out a legal integer with the same sign bit as the float. 1663ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SignBit = DAG.getLoad(LoadTy, dl, Ch, StackPtr, MachinePointerInfo(), 1664ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, 0); 16655d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands } else { // Little endian 16665d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SDValue LoadPtr = StackPtr; 16675d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // The float may be wider than the integer we are going to load. Advance 16685d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // the pointer so that the loaded integer will contain the sign bit. 16695d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands unsigned Strides = (FloatVT.getSizeInBits()-1)/LoadTy.getSizeInBits(); 16705d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands unsigned ByteOffset = (Strides * LoadTy.getSizeInBits()) / 8; 16715d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands LoadPtr = DAG.getNode(ISD::ADD, dl, LoadPtr.getValueType(), 16725d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands LoadPtr, DAG.getIntPtrConstant(ByteOffset)); 16735d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Load a legal integer containing the sign bit. 1674ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SignBit = DAG.getLoad(LoadTy, dl, Ch, LoadPtr, MachinePointerInfo(), 1675ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, 0); 16765d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Move the sign bit to the top bit of the loaded integer. 16775d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands unsigned BitShift = LoadTy.getSizeInBits() - 16785d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands (FloatVT.getSizeInBits() - 8 * ByteOffset); 16795d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands assert(BitShift < LoadTy.getSizeInBits() && "Pointer advanced wrong?"); 16805d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands if (BitShift) 16815d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SignBit = DAG.getNode(ISD::SHL, dl, LoadTy, SignBit, 16825d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands DAG.getConstant(BitShift,TLI.getShiftAmountTy())); 16835d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands } 16844bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16855d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Now get the sign bit proper, by seeing whether the value is negative. 16865d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SignBit = DAG.getSetCC(dl, TLI.getSetCCResultType(SignBit.getValueType()), 16875d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SignBit, DAG.getConstant(0, SignBit.getValueType()), 16885d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands ISD::SETLT); 16894bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Get the absolute value of the result. 16904bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue AbsVal = DAG.getNode(ISD::FABS, dl, Tmp1.getValueType(), Tmp1); 16914bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Select between the nabs and abs value based on the sign bit of 16924bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // the input. 16934bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getNode(ISD::SELECT, dl, AbsVal.getValueType(), SignBit, 16944bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getNode(ISD::FNEG, dl, AbsVal.getValueType(), AbsVal), 16954bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman AbsVal); 16964bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16974bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16984bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedmanvoid SelectionDAGLegalize::ExpandDYNAMIC_STACKALLOC(SDNode* Node, 16994bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results) { 17004bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned SPReg = TLI.getStackPointerRegisterToSaveRestore(); 17014bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert(SPReg && "Target cannot require DYNAMIC_STACKALLOC expansion and" 17024bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman " not tell us which reg is the stack pointer!"); 17034bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 1704e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 17054bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = SDValue(Node, 0); 17064bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = SDValue(Node, 1); 17074bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp3 = Node->getOperand(2); 17084bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Tmp1.getOperand(0); 17094bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 17104bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Chain the dynamic stack allocation so that it doesn't modify the stack 17114bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // pointer when other instructions are using the stack. 17124bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(0, true)); 17134bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 17144bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Size = Tmp2.getOperand(1); 17154bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SP = DAG.getCopyFromReg(Chain, dl, SPReg, VT); 17164bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = SP.getValue(1); 17174bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Align = cast<ConstantSDNode>(Tmp3)->getZExtValue(); 171816c29b5f285f375be53dabaa73e3e91107485fe4Anton Korobeynikov unsigned StackAlign = TM.getFrameLowering()->getStackAlignment(); 17194bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Align > StackAlign) 17204bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SP = DAG.getNode(ISD::AND, dl, VT, SP, 17214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getConstant(-(uint64_t)Align, VT)); 17224bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, SP, Size); // Value 17234bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCopyToReg(Chain, dl, SPReg, Tmp1); // Output chain 17244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 17254bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp2 = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(0, true), 17264bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getIntPtrConstant(0, true), SDValue()); 17274bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 17284bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 17294bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp2); 17304bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 17314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 17327f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// LegalizeSetCCCondCode - Legalize a SETCC with given LHS and RHS and 1733f77fc92b03efe455008474894d217282e2a03cadDan Gohman/// condition code CC on the current target. This routine expands SETCC with 17347f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// illegal condition code into AND / OR of multiple SETCC values. 1735e50ed30282bb5b4a9ed952580523f2dda16215acOwen Andersonvoid SelectionDAGLegalize::LegalizeSetCCCondCode(EVT VT, 17367f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng SDValue &LHS, SDValue &RHS, 1737bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue &CC, 1738775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DebugLoc dl) { 1739e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = LHS.getValueType(); 17407f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CCCode = cast<CondCodeSDNode>(CC)->get(); 17417f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (TLI.getCondCodeAction(CCCode, OpVT)) { 174235a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unknown condition code action!"); 17437f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Legal: 17447f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // Nothing to do. 17457f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 17467f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Expand: { 17477f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CC1 = ISD::SETCC_INVALID, CC2 = ISD::SETCC_INVALID; 17487f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng unsigned Opc = 0; 17497f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (CCCode) { 175035a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Don't know how to expand this condition!"); 1751e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETO; Opc = ISD::AND; break; 1752e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGT: CC1 = ISD::SETGT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1753e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGE: CC1 = ISD::SETGE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1754e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLT: CC1 = ISD::SETLT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1755e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLE: CC1 = ISD::SETLE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1756e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETONE: CC1 = ISD::SETNE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1757e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1758e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGT: CC1 = ISD::SETGT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1759e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGE: CC1 = ISD::SETGE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1760e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULT: CC1 = ISD::SETLT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1761e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULE: CC1 = ISD::SETLE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1762e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUNE: CC1 = ISD::SETNE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 17637f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // FIXME: Implement more expansions. 17647f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17657f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 1766bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC1 = DAG.getSetCC(dl, VT, LHS, RHS, CC1); 1767bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC2 = DAG.getSetCC(dl, VT, LHS, RHS, CC2); 1768bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen LHS = DAG.getNode(Opc, dl, VT, SetCC1, SetCC2); 17697f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng RHS = SDValue(); 17707f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng CC = SDValue(); 17717f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 17727f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17737f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17747f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng} 17757f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 17761401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// EmitStackConvert - Emit a store/load combination to the stack. This stores 17771401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// SrcOp to a stack slot of type SlotVT, truncating it if needed. It then does 17781401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// a load from the stack slot to DestVT, extending it if needed. 17791401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// The resultant code need not be legal. 1780475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::EmitStackConvert(SDValue SrcOp, 1781e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SlotVT, 1782e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 17838a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 178435481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Create the stack frame object. 1785ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson unsigned SrcAlign = 1786ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getTargetData()->getPrefTypeAlignment(SrcOp.getValueType(). 178723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson getTypeForEVT(*DAG.getContext())); 1788475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FIPtr = DAG.CreateStackTemporary(SlotVT, SrcAlign); 1789fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1790ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(FIPtr); 1791ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = StackPtrFI->getIndex(); 1792da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner MachinePointerInfo PtrInfo = MachinePointerInfo::getFixedStack(SPFI); 1793ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 179483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SrcSize = SrcOp.getValueType().getSizeInBits(); 179583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SlotSize = SlotVT.getSizeInBits(); 179683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned DestSize = DestVT.getSizeInBits(); 1797adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng const Type *DestType = DestVT.getTypeForEVT(*DAG.getContext()); 1798adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng unsigned DestAlign = TLI.getTargetData()->getPrefTypeAlignment(DestType); 1799fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18001401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // Emit a store to the stack slot. Use a truncstore if the input value is 18011401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // later than DestVT. 1802475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store; 1803ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 18041401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SrcSize > SlotSize) 18058a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getTruncStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 1806da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner PtrInfo, SlotVT, false, false, SrcAlign); 18071401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner else { 18081401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SrcSize == SlotSize && "Invalid store"); 18098a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 1810da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner PtrInfo, false, false, SrcAlign); 18111401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner } 1812fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 181335481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Result is a load from the stack slot. 18141401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SlotSize == DestSize) 1815da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner return DAG.getLoad(DestVT, dl, Store, FIPtr, PtrInfo, 1816ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, DestAlign); 1817fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18181401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SlotSize < DestSize && "Unknown extension!"); 1819ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner return DAG.getExtLoad(ISD::EXTLOAD, DestVT, dl, Store, FIPtr, 1820da2d8e1032eb4c2fefb1f647d7877910b9483835Chris Lattner PtrInfo, SlotVT, false, false, DestAlign); 182135481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner} 182235481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner 1823475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandSCALAR_TO_VECTOR(SDNode *Node) { 18248a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl = Node->getDebugLoc(); 18254352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // Create a vector sized/aligned stack slot, store the value to element #0, 18264352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // then load the whole vector back out. 1827475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(Node->getValueType(0)); 182869de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 1829ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(StackPtr); 1830ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = StackPtrFI->getIndex(); 1831ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 1832b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands SDValue Ch = DAG.getTruncStore(DAG.getEntryNode(), dl, Node->getOperand(0), 1833b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands StackPtr, 183485ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getFixedStack(SPFI), 18351e559443a17d1b335f697551c6263ba60d5dd827David Greene Node->getValueType(0).getVectorElementType(), 18361e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 18378a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(Node->getValueType(0), dl, Ch, StackPtr, 183885ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getFixedStack(SPFI), 18391e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 18404352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 18414352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 18424352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 1843ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner/// ExpandBUILD_VECTOR - Expand a BUILD_VECTOR node on targets that don't 184407a96765daedf180a7102d39fe56c499878312b7Dan Gohman/// support the operation, but do support the resultant vector type. 1845475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandBUILD_VECTOR(SDNode *Node) { 184626cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson unsigned NumElems = Node->getNumOperands(); 18477a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Value1, Value2; 184826cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson DebugLoc dl = Node->getDebugLoc(); 1849e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1850e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(0).getValueType(); 1851e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 1852fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1853fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // If the only non-undef value is the low element, turn this into a 185487100e0b83b808757bf44dabecd1d1048255d1adChris Lattner // SCALAR_TO_VECTOR node. If this is { X, X, X, X }, determine X. 1855ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner bool isOnlyLowElement = true; 18567a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman bool MoreThanTwoValues = false; 18572eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner bool isConstant = true; 18587a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 1859475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue V = Node->getOperand(i); 18607a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 18617a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 18627a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (i > 0) 1863ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner isOnlyLowElement = false; 18647a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!isa<ConstantFPSDNode>(V) && !isa<ConstantSDNode>(V)) 18652eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner isConstant = false; 18667a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 18677a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) { 18687a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value1 = V; 18697a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (!Value2.getNode()) { 18707a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V != Value1) 18717a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value2 = V; 18727a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (V != Value1 && V != Value2) { 18737a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman MoreThanTwoValues = true; 18747a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 1875ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1876fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18777a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) 18787a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getUNDEF(VT); 18797a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 18807a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (isOnlyLowElement) 188126cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson return DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Node->getOperand(0)); 1882fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18832eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // If all elements are constants, create a load from the constant pool. 1884ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner if (isConstant) { 1885ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner std::vector<Constant*> CV; 1886033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng for (unsigned i = 0, e = NumElems; i != e; ++i) { 1887fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel if (ConstantFPSDNode *V = 1888ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner dyn_cast<ConstantFPSDNode>(Node->getOperand(i))) { 18894fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman CV.push_back(const_cast<ConstantFP *>(V->getConstantFPValue())); 1890fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel } else if (ConstantSDNode *V = 1891ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson dyn_cast<ConstantSDNode>(Node->getOperand(i))) { 18929a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen if (OpVT==EltVT) 18939a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CV.push_back(const_cast<ConstantInt *>(V->getConstantIntValue())); 18949a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen else { 18959a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // If OpVT and EltVT don't match, EltVT is not legal and the 18969a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // element values have been promoted/truncated earlier. Undo this; 18979a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // we don't want a v16i8 to become a v16i32 for example. 18989a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen const ConstantInt *CI = V->getConstantIntValue(); 18999a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CV.push_back(ConstantInt::get(EltVT.getTypeForEVT(*DAG.getContext()), 19009a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CI->getZExtValue())); 19019a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen } 1902ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } else { 1903ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner assert(Node->getOperand(i).getOpcode() == ISD::UNDEF); 19049a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen const Type *OpNTy = EltVT.getTypeForEVT(*DAG.getContext()); 19059e9a0d5fc26878e51a58a8b57900fcbf952c2691Owen Anderson CV.push_back(UndefValue::get(OpNTy)); 1906ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1907ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1908af7ec975870f92245f1f1484ac80a1e2db6a0afaOwen Anderson Constant *CP = ConstantVector::get(CV); 1909475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(CP, TLI.getPointerTy()); 19101606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 19118a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(VT, dl, DAG.getEntryNode(), CPIdx, 191285ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getConstantPool(), 19131e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, Alignment); 1914ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1915fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 19167a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!MoreThanTwoValues) { 19177a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SmallVector<int, 8> ShuffleVec(NumElems, -1); 19187a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 19197a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue V = Node->getOperand(i); 19207a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 19217a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 19227a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman ShuffleVec[i] = V == Value1 ? 0 : NumElems; 19237a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 19247a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (TLI.isShuffleMaskLegal(ShuffleVec, Node->getValueType(0))) { 19252eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Get the splatted value into the low element of a vector register. 19267a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec1 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value1); 19277a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec2; 19287a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (Value2.getNode()) 19297a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value2); 19307a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman else 19317a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getUNDEF(VT); 1932fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 19332eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Return shuffle(LowValVec, undef, <0,0,0,0>) 19347a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getVectorShuffle(VT, dl, Vec1, Vec2, ShuffleVec.data()); 1935033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1936033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1937fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 19387ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, we can't handle this case efficiently. 19397ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return ExpandVectorBuildThroughStack(Node); 1940ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner} 1941ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner 194277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// ExpandLibCall - Expand a node into a call to a libcall. If the result value 194377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// does not fit into a register, return the lo part and set the hi part to the 194477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// by-reg argument. If it does fit into a single register, return the result 194577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// and leave the Hi part unset. 1946475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, 194747b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman bool isSigned) { 1948fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // The input chain to this libcall is the entry node of the function. 19496831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalizing the call will automatically add the previous call to the 19506831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // dependence. 1951475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InChain = DAG.getEntryNode(); 1952fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 195377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 195447857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer TargetLowering::ArgListEntry Entry; 195577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 1956e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ArgVT = Node->getOperand(i).getValueType(); 195723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext()); 1958fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Entry.Node = Node->getOperand(i); Entry.Ty = ArgTy; 1959d0b82b301d700217a716526f9329bb031e0d6578Anton Korobeynikov Entry.isSExt = isSigned; 196000fee65fd21f9615d1a604b8b7d42cd16a3f6b47Duncan Sands Entry.isZExt = !isSigned; 196147857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer Args.push_back(Entry); 196277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 1963056292fd738924f3f7703725d8f630983794b5a5Bill Wendling SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 19640c39719bfc7d0b3e61fbd55e1115184a1d5f6ae7Mon P Wang TLI.getPointerTy()); 1965edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 19660d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Splice the libcall in wherever FindInputOutputChains tells us to. 196723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext()); 19683d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng 19693d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng // isTailCall may be true since the callee does not reference caller stack 19703d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng // frame. Check if it's in the right position. 19713d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng bool isTailCall = isInTailCallPosition(DAG, Node, TLI); 1972ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson std::pair<SDValue, SDValue> CallInfo = 197386098bd6a63d2cdf0c9be9ef3151bd2728281fd7Dale Johannesen TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false, 19743d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng 0, TLI.getLibcallCallingConv(LC), isTailCall, 197598ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 197646ada19645c981a0b7932487d163f7582074a4d9Bill Wendling Callee, Args, DAG, Node->getDebugLoc()); 19770d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 19783d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng if (!CallInfo.second.getNode()) 19793d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng // It's a tailcall, return the chain (which is the DAG root). 19803d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng return DAG.getRoot(); 19813d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng 19826831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call sequence, starting with the chain. This will advance 19836831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // the LastCALLSEQ_END to the legalized version of the CALLSEQ_END node that 19846831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // was added by LowerCallTo (guaranteeing proper serialization of calls). 19856831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(CallInfo.second); 198674807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman return CallInfo.first; 198722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 198822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 1989e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach// ExpandChainLibCall - Expand a node into a call to a libcall. Similar to 1990e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach// ExpandLibCall except that the first operand is the in-chain. 1991e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbachstd::pair<SDValue, SDValue> 1992e03262fcfc09356a0e3ec589041bc2e0248944e9Jim GrosbachSelectionDAGLegalize::ExpandChainLibCall(RTLIB::Libcall LC, 1993e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach SDNode *Node, 1994e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach bool isSigned) { 1995e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach SDValue InChain = Node->getOperand(0); 1996e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 1997e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach TargetLowering::ArgListTy Args; 1998e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach TargetLowering::ArgListEntry Entry; 1999e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach for (unsigned i = 1, e = Node->getNumOperands(); i != e; ++i) { 2000e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach EVT ArgVT = Node->getOperand(i).getValueType(); 2001e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach const Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext()); 2002e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Entry.Node = Node->getOperand(i); 2003e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Entry.Ty = ArgTy; 2004e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Entry.isSExt = isSigned; 2005e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Entry.isZExt = !isSigned; 2006e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Args.push_back(Entry); 2007e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2008e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 2009e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach TLI.getPointerTy()); 2010e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2011e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach // Splice the libcall in wherever FindInputOutputChains tells us to. 2012e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach const Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext()); 2013e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach std::pair<SDValue, SDValue> CallInfo = 2014e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false, 20153d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng 0, TLI.getLibcallCallingConv(LC), /*isTailCall=*/false, 2016e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach /*isReturnValueUsed=*/true, 2017e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Callee, Args, DAG, Node->getDebugLoc()); 2018e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2019e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach // Legalize the call sequence, starting with the chain. This will advance 2020e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach // the LastCALLSEQ_END to the legalized version of the CALLSEQ_END node that 2021e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach // was added by LowerCallTo (guaranteeing proper serialization of calls). 2022e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach LegalizeOp(CallInfo.second); 2023e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach return CallInfo; 2024e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach} 2025e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2026f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandFPLibCall(SDNode* Node, 2027f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F32, 2028f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, 2029f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F80, 2030f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128) { 2031f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 2032825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 203335a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unexpected request for libcall!"); 2034825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f32: LC = Call_F32; break; 2035825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f64: LC = Call_F64; break; 2036825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f80: LC = Call_F80; break; 2037825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::ppcf128: LC = Call_PPCF128; break; 2038f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 2039f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, false); 2040f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 2041f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 2042f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandIntLibCall(SDNode* Node, bool isSigned, 20438983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I8, 2044f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I16, 2045f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I32, 2046f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I64, 2047f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128) { 2048f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 2049825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 205035a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unexpected request for libcall!"); 20518983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i8: LC = Call_I8; break; 20528983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i16: LC = Call_I16; break; 20538983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i32: LC = Call_I32; break; 20548983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i64: LC = Call_I64; break; 2055825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i128: LC = Call_I128; break; 2056f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 2057f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, isSigned); 2058f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 2059f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 206022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandLegalINT_TO_FP - This function is responsible for legalizing a 206122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// INT_TO_FP operation of the specified operand when the target requests that 206222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we expand it. At this point, we know that the result and operand types are 206322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target. 2064475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLegalINT_TO_FP(bool isSigned, 2065475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0, 2066e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2067af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 2068825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Op0.getValueType() == MVT::i32) { 206922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // simple 32-bit [signed|unsigned] integer to float/double expansion 2070fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 207123594d4537fb88a963c6d6993af5027eac9bfbacChris Lattner // Get the stack frame index of a 8 byte buffer. 2072825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue StackSlot = DAG.CreateStackTemporary(MVT::f64); 2073fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 207422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // word offset constant for Hi/Lo address computation 2075475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue WordOff = DAG.getConstant(sizeof(int), TLI.getPointerTy()); 207622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // set up Hi and Lo (into buffer) address based on endian 2077475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = StackSlot; 2078fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Lo = DAG.getNode(ISD::ADD, dl, 2079ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getPointerTy(), StackSlot, WordOff); 2080408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner if (TLI.isLittleEndian()) 2081408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner std::swap(Hi, Lo); 2082fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 208322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // if signed map to unsigned space 2084475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0Mapped; 208522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) { 208622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // constant used to invert sign bit (signed to unsigned mapping) 2087825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue SignBit = DAG.getConstant(0x80000000u, MVT::i32); 2088825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Op0Mapped = DAG.getNode(ISD::XOR, dl, MVT::i32, Op0, SignBit); 208922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } else { 209022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Op0Mapped = Op0; 209122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 209222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the lo of the constructed double - based on integer input 2093af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Store1 = DAG.getStore(DAG.getEntryNode(), dl, 20946229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner Op0Mapped, Lo, MachinePointerInfo(), 20951e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 209622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // initial hi portion of constructed double 2097825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue InitialHi = DAG.getConstant(0x43300000u, MVT::i32); 209822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the hi of the constructed double - biased exponent 20996229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner SDValue Store2 = DAG.getStore(Store1, dl, InitialHi, Hi, 21006229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner MachinePointerInfo(), 21016229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner false, false, 0); 210222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // load the constructed double 2103ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue Load = DAG.getLoad(MVT::f64, dl, Store2, StackSlot, 2104ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(), false, false, 0); 210522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // FP constant to bias correct the final result 2106475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Bias = DAG.getConstantFP(isSigned ? 2107ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000080000000ULL) : 2108ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000000000000ULL), 2109825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::f64); 211022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // subtract the bias 2111825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Sub = DAG.getNode(ISD::FSUB, dl, MVT::f64, Load, Bias); 211222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // final result 2113475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result; 211422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // handle final rounding 2115825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (DestVT == MVT::f64) { 211622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // do nothing 211722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Result = Sub; 2118825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsLT(MVT::f64)) { 2119af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_ROUND, dl, DestVT, Sub, 21200bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(0)); 2121825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsGT(MVT::f64)) { 2122af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, DestVT, Sub); 212322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 212422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Result; 212522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 212622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner assert(!isSigned && "Legalize cannot Expand SINT_TO_FP for i64 yet"); 2127a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen // Code below here assumes !isSigned without checking again. 21280fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman 21290fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // Implementation of unsigned i64 to f64 following the algorithm in 21300fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // __floatundidf in compiler_rt. This implementation has the advantage 21310fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // of performing rounding correctly, both in the default rounding mode 21320fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // and in all alternate rounding modes. 21330fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // TODO: Generalize this for use with other types. 21340fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman if (Op0.getValueType() == MVT::i64 && DestVT == MVT::f64) { 21350fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue TwoP52 = 21360fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstant(UINT64_C(0x4330000000000000), MVT::i64); 21370fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue TwoP84PlusTwoP52 = 21380fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstantFP(BitsToDouble(UINT64_C(0x4530000000100000)), MVT::f64); 21390fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue TwoP84 = 21400fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstant(UINT64_C(0x4530000000000000), MVT::i64); 21410fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman 21420fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue Lo = DAG.getZeroExtendInReg(Op0, dl, MVT::i32); 21430fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue Hi = DAG.getNode(ISD::SRL, dl, MVT::i64, Op0, 21440fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstant(32, MVT::i64)); 21450fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue LoOr = DAG.getNode(ISD::OR, dl, MVT::i64, Lo, TwoP52); 21460fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue HiOr = DAG.getNode(ISD::OR, dl, MVT::i64, Hi, TwoP84); 2147bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue LoFlt = DAG.getNode(ISD::BITCAST, dl, MVT::f64, LoOr); 2148bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue HiFlt = DAG.getNode(ISD::BITCAST, dl, MVT::f64, HiOr); 21496e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach SDValue HiSub = DAG.getNode(ISD::FSUB, dl, MVT::f64, HiFlt, 21506e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach TwoP84PlusTwoP52); 21510fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman return DAG.getNode(ISD::FADD, dl, MVT::f64, LoFlt, HiSub); 21520fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman } 21530fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman 21543a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // Implementation of unsigned i64 to f32. 2155a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen // TODO: Generalize this for use with other types. 2156a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen if (Op0.getValueType() == MVT::i64 && DestVT == MVT::f32) { 21573a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // For unsigned conversions, convert them to signed conversions using the 21583a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // algorithm from the x86_64 __floatundidf in compiler_rt. 21593a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson if (!isSigned) { 21603a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue Fast = DAG.getNode(ISD::SINT_TO_FP, dl, MVT::f32, Op0); 2161bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 21623a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue ShiftConst = DAG.getConstant(1, TLI.getShiftAmountTy()); 21633a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue Shr = DAG.getNode(ISD::SRL, dl, MVT::i64, Op0, ShiftConst); 21643a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue AndConst = DAG.getConstant(1, MVT::i64); 21653a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue And = DAG.getNode(ISD::AND, dl, MVT::i64, Op0, AndConst); 21663a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue Or = DAG.getNode(ISD::OR, dl, MVT::i64, And, Shr); 2167bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 21683a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue SignCvt = DAG.getNode(ISD::SINT_TO_FP, dl, MVT::f32, Or); 21693a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson SDValue Slow = DAG.getNode(ISD::FADD, dl, MVT::f32, SignCvt, SignCvt); 2170bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 21713a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // TODO: This really should be implemented using a branch rather than a 2172bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck // select. We happen to get lucky and machinesink does the right 2173bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck // thing most of the time. This would be a good candidate for a 21743a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson //pseudo-op, or, even better, for whole-function isel. 2175bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck SDValue SignBitTest = DAG.getSetCC(dl, TLI.getSetCCResultType(MVT::i64), 21763a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson Op0, DAG.getConstant(0, MVT::i64), ISD::SETLT); 21773a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson return DAG.getNode(ISD::SELECT, dl, MVT::f32, SignBitTest, Slow, Fast); 21783a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson } 2179bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 21803a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson // Otherwise, implement the fully general conversion. 2181a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen EVT SHVT = TLI.getShiftAmountTy(); 2182bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 21836e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach SDValue And = DAG.getNode(ISD::AND, dl, MVT::i64, Op0, 2184a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(UINT64_C(0xfffffffffffff800), MVT::i64)); 2185a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Or = DAG.getNode(ISD::OR, dl, MVT::i64, And, 2186a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(UINT64_C(0x800), MVT::i64)); 21876e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach SDValue And2 = DAG.getNode(ISD::AND, dl, MVT::i64, Op0, 2188a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(UINT64_C(0x7ff), MVT::i64)); 2189a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Ne = DAG.getSetCC(dl, TLI.getSetCCResultType(MVT::i64), 2190a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen And2, DAG.getConstant(UINT64_C(0), MVT::i64), ISD::SETNE); 2191a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Sel = DAG.getNode(ISD::SELECT, dl, MVT::i64, Ne, Or, Op0); 2192a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Ge = DAG.getSetCC(dl, TLI.getSetCCResultType(MVT::i64), 2193a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen Op0, DAG.getConstant(UINT64_C(0x0020000000000000), MVT::i64), 21943a9e7690ba99c27d9b09fa8e61fb9f7ba01364c9Owen Anderson ISD::SETUGE); 2195a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Sel2 = DAG.getNode(ISD::SELECT, dl, MVT::i64, Ge, Sel, Op0); 2196bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck 2197a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Sh = DAG.getNode(ISD::SRL, dl, MVT::i64, Sel2, 2198a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(32, SHVT)); 2199a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Trunc = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Sh); 2200a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fcvt = DAG.getNode(ISD::UINT_TO_FP, dl, MVT::f64, Trunc); 2201a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue TwoP32 = 2202a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstantFP(BitsToDouble(UINT64_C(0x41f0000000000000)), MVT::f64); 2203a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fmul = DAG.getNode(ISD::FMUL, dl, MVT::f64, TwoP32, Fcvt); 2204a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Lo = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Sel2); 2205a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fcvt2 = DAG.getNode(ISD::UINT_TO_FP, dl, MVT::f64, Lo); 2206a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fadd = DAG.getNode(ISD::FADD, dl, MVT::f64, Fmul, Fcvt2); 2207a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen return DAG.getNode(ISD::FP_ROUND, dl, MVT::f32, Fadd, 2208a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getIntPtrConstant(0)); 2209a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen } 2210a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen 2211b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue Tmp1 = DAG.getNode(ISD::SINT_TO_FP, dl, DestVT, Op0); 2212b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman 2213b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue SignSet = DAG.getSetCC(dl, TLI.getSetCCResultType(Op0.getValueType()), 2214b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Op0, DAG.getConstant(0, Op0.getValueType()), 2215b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman ISD::SETLT); 2216b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue Zero = DAG.getIntPtrConstant(0), Four = DAG.getIntPtrConstant(4); 2217b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue CstOffset = DAG.getNode(ISD::SELECT, dl, Zero.getValueType(), 2218b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SignSet, Four, Zero); 2219b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman 2220b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman // If the sign bit of the integer is set, the large number will be treated 2221b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman // as a negative number. To counteract this, the dynamic code adds an 2222b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman // offset depending on the data type. 2223b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman uint64_t FF; 2224b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman switch (Op0.getValueType().getSimpleVT().SimpleTy) { 222535a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unsupported integer type!"); 2226b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i8 : FF = 0x43800000ULL; break; // 2^8 (as a float) 2227b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i16: FF = 0x47800000ULL; break; // 2^16 (as a float) 2228b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i32: FF = 0x4F800000ULL; break; // 2^32 (as a float) 2229b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i64: FF = 0x5F800000ULL; break; // 2^64 (as a float) 2230b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman } 2231b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman if (TLI.isLittleEndian()) FF <<= 32; 2232b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Constant *FudgeFactor = ConstantInt::get( 2233b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Type::getInt64Ty(*DAG.getContext()), FF); 2234b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman 2235b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue CPIdx = DAG.getConstantPool(FudgeFactor, TLI.getPointerTy()); 2236b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 2237b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman CPIdx = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), CPIdx, CstOffset); 2238b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Alignment = std::min(Alignment, 4u); 2239b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue FudgeInReg; 2240b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman if (DestVT == MVT::f32) 2241b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman FudgeInReg = DAG.getLoad(MVT::f32, dl, DAG.getEntryNode(), CPIdx, 224285ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getConstantPool(), 2243b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman false, false, Alignment); 2244b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman else { 2245b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman FudgeInReg = 2246bcc8017c738e92d9c1af221b11c4916cb524184eEvan Cheng LegalizeOp(DAG.getExtLoad(ISD::EXTLOAD, DestVT, dl, 2247b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman DAG.getEntryNode(), CPIdx, 224885ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getConstantPool(), 2249b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman MVT::f32, false, false, Alignment)); 2250b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman } 225122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2252b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman return DAG.getNode(ISD::FADD, dl, DestVT, Tmp1, FudgeInReg); 225322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 225422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 225522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalINT_TO_FP - This function is responsible for legalizing a 225622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// *INT_TO_FP operation of the specified operand when the target requests that 225722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 225822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal UINT_TO_FP or SINT_TO_FP 225922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that takes a larger input. 2260475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalINT_TO_FP(SDValue LegalOp, 2261e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2262af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2263af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 226422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate *INT_TO_FP operation to use. 2265e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewInTy = LegalOp.getValueType(); 226622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 226722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 226822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 226922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 227022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2271825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewInTy = (MVT::SimpleValueType)(NewInTy.getSimpleVT().SimpleTy+1); 227283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewInTy.isInteger() && "Ran out of possibilities!"); 227322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 227422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports SINT_TO_FP of this type, use it. 22753be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::SINT_TO_FP, NewInTy)) { 22763be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::SINT_TO_FP; 22773be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 227822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 227922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) continue; 228022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 228122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports UINT_TO_FP of this type, use it. 22823be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::UINT_TO_FP, NewInTy)) { 22833be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::UINT_TO_FP; 22843be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 228522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 228622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 228722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 228822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 228922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 229022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Okay, we found the operation and type to use. Zero extend our input to the 229122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // desired type then run the operation on it. 2292af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(OpToUse, dl, DestVT, 229322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, 2294af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen dl, NewInTy, LegalOp)); 229577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 229677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 229722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalFP_TO_INT - This function is responsible for legalizing a 229822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// FP_TO_*INT operation of the specified operand when the target requests that 229922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 230022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal FP_TO_UINT or FP_TO_SINT 230122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that returns a larger result. 2302475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalFP_TO_INT(SDValue LegalOp, 2303e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2304af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2305af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 230622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate FP_TO*INT operation to use. 2307e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewOutTy = DestVT; 23089c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 230922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 2310e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 231122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 231222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2313825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewOutTy = (MVT::SimpleValueType)(NewOutTy.getSimpleVT().SimpleTy+1); 231483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewOutTy.isInteger() && "Ran out of possibilities!"); 231566de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner 23163be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_SINT, NewOutTy)) { 231722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_SINT; 231822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 231922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 2320e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 23213be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_UINT, NewOutTy)) { 232222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_UINT; 232322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 2324e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner } 23250d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 232622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 2327a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner } 2328a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner 2329fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 233027a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Okay, we found the operation and type to use. 2331af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Operation = DAG.getNode(OpToUse, dl, NewOutTy, LegalOp); 2332126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 233327a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Truncate the result of the extended FP_TO_*INT operation to the desired 233427a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // size. 2335af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(ISD::TRUNCATE, dl, DestVT, Operation); 233622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 233713689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner 233822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBSWAP - Open code the operations for BSWAP of the specified operation. 233922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 23408a782a2a8c2f0c82f292d03a3f707232b0bae27bDale JohannesenSDValue SelectionDAGLegalize::ExpandBSWAP(SDValue Op, DebugLoc dl) { 2341e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2342e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SHVT = TLI.getShiftAmountTy(); 2343475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4, Tmp5, Tmp6, Tmp7, Tmp8; 2344825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (VT.getSimpleVT().SimpleTy) { 234535a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unhandled Expand type in BSWAP!"); 2346825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i16: 23478a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 23488a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 23498a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp1, Tmp2); 2350825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i32: 23518a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 23528a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 23538a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 23548a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 23558a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(0xFF0000, VT)); 23568a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(0xFF00, VT)); 23578a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 23588a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 23598a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 2360825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i64: 23618a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(56, SHVT)); 23628a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(40, SHVT)); 23638a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 23648a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 23658a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 23668a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 23678a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(40, SHVT)); 23688a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(56, SHVT)); 23698a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::AND, dl, VT, Tmp7, DAG.getConstant(255ULL<<48, VT)); 23708a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::AND, dl, VT, Tmp6, DAG.getConstant(255ULL<<40, VT)); 23718a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::AND, dl, VT, Tmp5, DAG.getConstant(255ULL<<32, VT)); 23728a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::AND, dl, VT, Tmp4, DAG.getConstant(255ULL<<24, VT)); 23738a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(255ULL<<16, VT)); 23748a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(255ULL<<8 , VT)); 23758a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp7); 23768a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::OR, dl, VT, Tmp6, Tmp5); 23778a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 23788a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 23798a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp6); 23808a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 23818a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp4); 23820d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner } 238377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 2384edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 2385b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer/// SplatByte - Distribute ByteVal over NumBits bits. 23865df5a22d1a098961edebac59fbddcab045fddd29Benjamin Kramer// FIXME: Move this helper to a common place. 2387b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramerstatic APInt SplatByte(unsigned NumBits, uint8_t ByteVal) { 2388b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer APInt Val = APInt(NumBits, ByteVal); 2389b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer unsigned Shift = 8; 2390b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer for (unsigned i = NumBits; i > 8; i >>= 1) { 2391b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Val = (Val << Shift) | Val; 2392b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Shift <<= 1; 2393b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer } 2394b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer return Val; 2395b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer} 2396b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer 239722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBitCount - Expand the specified bitcount instruction into operations. 239822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 2399fdc40a0a696c658d550d894ea03772e5f8af2c94Scott MichelSDValue SelectionDAGLegalize::ExpandBitCount(unsigned Opc, SDValue Op, 24008a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 240122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner switch (Opc) { 240235a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Cannot expand this yet!"); 240322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTPOP: { 2404e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2405e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ShVT = TLI.getShiftAmountTy(); 2406b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer unsigned Len = VT.getSizeInBits(); 2407b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer 24085df5a22d1a098961edebac59fbddcab045fddd29Benjamin Kramer assert(VT.isInteger() && Len <= 128 && Len % 8 == 0 && 24095df5a22d1a098961edebac59fbddcab045fddd29Benjamin Kramer "CTPOP not implemented for this type."); 24105df5a22d1a098961edebac59fbddcab045fddd29Benjamin Kramer 2411b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // This is the "best" algorithm from 2412b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // http://graphics.stanford.edu/~seander/bithacks.html#CountBitsSetParallel 2413b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer 2414b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer SDValue Mask55 = DAG.getConstant(SplatByte(Len, 0x55), VT); 2415b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer SDValue Mask33 = DAG.getConstant(SplatByte(Len, 0x33), VT); 2416b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer SDValue Mask0F = DAG.getConstant(SplatByte(Len, 0x0F), VT); 2417b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer SDValue Mask01 = DAG.getConstant(SplatByte(Len, 0x01), VT); 2418b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer 2419b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // v = v - ((v >> 1) & 0x55555555...) 2420b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Op = DAG.getNode(ISD::SUB, dl, VT, Op, 2421b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::AND, dl, VT, 2422b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::SRL, dl, VT, Op, 2423b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getConstant(1, ShVT)), 2424b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Mask55)); 2425b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // v = (v & 0x33333333...) + ((v >> 2) & 0x33333333...) 2426b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Op = DAG.getNode(ISD::ADD, dl, VT, 2427b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::AND, dl, VT, Op, Mask33), 2428b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::AND, dl, VT, 2429b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::SRL, dl, VT, Op, 2430b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getConstant(2, ShVT)), 2431b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Mask33)); 2432b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // v = (v + (v >> 4)) & 0x0F0F0F0F... 2433b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Op = DAG.getNode(ISD::AND, dl, VT, 2434b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::ADD, dl, VT, Op, 2435b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::SRL, dl, VT, Op, 2436b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getConstant(4, ShVT))), 2437b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Mask0F); 2438b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer // v = (v * 0x01010101...) >> (Len - 8) 2439b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer Op = DAG.getNode(ISD::SRL, dl, VT, 2440b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getNode(ISD::MUL, dl, VT, Op, Mask01), 2441b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer DAG.getConstant(Len - 8, ShVT)); 2442b6516aeef12a05aa47515f76e18fc426d85babbdBenjamin Kramer 244322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Op; 244422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 244522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTLZ: { 244622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we do this: 244722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 1); 244822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 2); 244922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // ... 245022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>16); 245122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>32); // for 64-bit input 245222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // return popcount(~x); 245322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // 245422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // but see also: http://www.hackersdelight.org/HDcode/nlz.cc 2455e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2456e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ShVT = TLI.getShiftAmountTy(); 245783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 245822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 2459475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2460fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::OR, dl, VT, Op, 2461e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3)); 246222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 24638a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Op = DAG.getNOT(dl, Op, VT); 24648a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Op); 246522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 246622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTTZ: { 246722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we use: { return popcount(~x & (x - 1)); } 246822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // unless the target has ctlz but not ctpop, in which case we use: 246922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // { return 32 - nlz(~x & (x-1)); } 247022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // see also http://www.hackersdelight.org/HDcode/ntz.cc 2471e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 24728a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue Tmp3 = DAG.getNode(ISD::AND, dl, VT, 24738a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNOT(dl, Op, VT), 24748a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SUB, dl, VT, Op, 24757581bfa2757a3149c6d17c0fe592e5c3808aa843Bill Wendling DAG.getConstant(1, VT))); 247622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If ISD::CTLZ is legal and CTPOP isn't, then do that instead. 2477f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman if (!TLI.isOperationLegalOrCustom(ISD::CTPOP, VT) && 2478f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.isOperationLegalOrCustom(ISD::CTLZ, VT)) 24798a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::SUB, dl, VT, 248083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(VT.getSizeInBits(), VT), 24818a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::CTLZ, dl, VT, Tmp3)); 24828a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Tmp3); 248322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 248422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 248522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 2486e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 2487e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbachstd::pair <SDValue, SDValue> SelectionDAGLegalize::ExpandAtomic(SDNode *Node) { 2488e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach unsigned Opc = Node->getOpcode(); 2489e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach MVT VT = cast<AtomicSDNode>(Node)->getMemoryVT().getSimpleVT(); 2490e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach RTLIB::Libcall LC; 2491e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2492e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (Opc) { 2493e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: 2494e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach llvm_unreachable("Unhandled atomic intrinsic Expand!"); 2495e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2496ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case ISD::ATOMIC_SWAP: 2497ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach switch (VT.SimpleTy) { 2498ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2499ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case MVT::i8: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_1; break; 2500ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case MVT::i16: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_2; break; 2501ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case MVT::i32: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_4; break; 2502ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach case MVT::i64: LC = RTLIB::SYNC_LOCK_TEST_AND_SET_8; break; 2503ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach } 2504ef6eb9c7ab7967790566c5e2d47977d89fc060eeJim Grosbach break; 2505e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_CMP_SWAP: 2506e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2507e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2508e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_1; break; 2509e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_2; break; 2510e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_4; break; 2511e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_VAL_COMPARE_AND_SWAP_8; break; 2512e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2513e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2514e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_ADD: 2515e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2516e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2517e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_ADD_1; break; 2518e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_ADD_2; break; 2519e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_ADD_4; break; 2520e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_ADD_8; break; 2521e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2522e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2523e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_SUB: 2524e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2525e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2526e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_SUB_1; break; 2527e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_SUB_2; break; 2528e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_SUB_4; break; 2529e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_SUB_8; break; 2530e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2531e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2532e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_AND: 2533e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2534e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2535e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_AND_1; break; 2536e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_AND_2; break; 2537e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_AND_4; break; 2538e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_AND_8; break; 2539e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2540e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2541e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_OR: 2542e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2543e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2544e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_OR_1; break; 2545e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_OR_2; break; 2546e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_OR_4; break; 2547e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_OR_8; break; 2548e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2549e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2550e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_XOR: 2551e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2552e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2553e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_XOR_1; break; 2554e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_XOR_2; break; 2555e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_XOR_4; break; 2556e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_XOR_8; break; 2557e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2558e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2559e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case ISD::ATOMIC_LOAD_NAND: 2560e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach switch (VT.SimpleTy) { 2561e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach default: llvm_unreachable("Unexpected value type for atomic!"); 2562e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i8: LC = RTLIB::SYNC_FETCH_AND_NAND_1; break; 2563e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i16: LC = RTLIB::SYNC_FETCH_AND_NAND_2; break; 2564e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i32: LC = RTLIB::SYNC_FETCH_AND_NAND_4; break; 2565e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach case MVT::i64: LC = RTLIB::SYNC_FETCH_AND_NAND_8; break; 2566e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2567e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach break; 2568e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach } 2569e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 2570e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach return ExpandChainLibCall(LC, Node, false); 2571e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach} 2572e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach 25738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::ExpandNode(SDNode *Node, 25748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 25758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 2576bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 25778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 25788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 25798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 25808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 25818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandBitCount(Node->getOpcode(), Node->getOperand(0), dl); 25828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 25838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 25848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: 2585775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandBSWAP(Node->getOperand(0), dl)); 25868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 25878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 25888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 25898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 25908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, Node->getValueType(0))); 25918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 25928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 25938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(1, Node->getValueType(0))); 25948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 25958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 25968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_LABEL: 25978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::PREFETCH: 25988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAEND: 2599c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach case ISD::EH_SJLJ_LONGJMP: 2600e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach case ISD::EH_SJLJ_DISPATCHSETUP: 2601e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach // If the target didn't expand these, there's nothing to do, so just 2602e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach // preserve the chain and be done. 2603c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach Results.push_back(Node->getOperand(0)); 2604c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach break; 2605c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach case ISD::EH_SJLJ_SETJMP: 2606e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach // If the target didn't expand this, just return 'zero' and preserve the 2607e4ad387a5a88dae20f0f7578e55170bbc8eee2a9Jim Grosbach // chain. 2608c66e150b2cb1f2f8e2f4eb124b9177ffc6ef3a74Jim Grosbach Results.push_back(DAG.getConstant(0, MVT::i32)); 26098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(0)); 26108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 2611bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach case ISD::MEMBARRIER: { 2612bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach // If the target didn't lower this, lower it to '__sync_synchronize()' call 2613bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach TargetLowering::ArgListTy Args; 2614bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach std::pair<SDValue, SDValue> CallResult = 2615bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach TLI.LowerCallTo(Node->getOperand(0), Type::getVoidTy(*DAG.getContext()), 26163d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng false, false, false, false, 0, CallingConv::C, 26173d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng /*isTailCall=*/false, 2618bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach /*isReturnValueUsed=*/true, 2619bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach DAG.getExternalSymbol("__sync_synchronize", 2620bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach TLI.getPointerTy()), 2621bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach Args, DAG, dl); 2622bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach Results.push_back(CallResult.second); 2623bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach break; 2624bbfc0d22a9a8e197a5ea428f14d37366a1fadd5fJim Grosbach } 2625b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach // By default, atomic intrinsics are marked Legal and lowered. Targets 2626b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach // which don't support them directly, however, may want libcalls, in which 2627b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach // case they mark them Expand, and we get here. 2628b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_SWAP: 2629b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_ADD: 2630b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_SUB: 2631b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_AND: 2632b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_OR: 2633b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_XOR: 2634b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_NAND: 2635b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_MIN: 2636b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_MAX: 2637b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_UMIN: 2638b56ce8171ec52f44015d95127faaa7dd4ed92763Jim Grosbach case ISD::ATOMIC_LOAD_UMAX: 2639a845706dc1cebfe75913832e07ef114519a879d6Evan Cheng case ISD::ATOMIC_CMP_SWAP: { 2640e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach std::pair<SDValue, SDValue> Tmp = ExpandAtomic(Node); 2641e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Results.push_back(Tmp.first); 2642e03262fcfc09356a0e3ec589041bc2e0248944e9Jim Grosbach Results.push_back(Tmp.second); 264359c38f31acf87901208bbf790508196b1c0ad1fdJim Grosbach break; 2644a845706dc1cebfe75913832e07ef114519a879d6Evan Cheng } 26454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::DYNAMIC_STACKALLOC: 26464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ExpandDYNAMIC_STACKALLOC(Node, Results); 26474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 26488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 26498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0; i < Node->getNumValues(); i++) 26508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(i)); 26518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 26528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UNDEF: { 2653e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 26548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (VT.isInteger()) 26558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, VT)); 265635a389344d21178ee280c2410401b2060b5b879cChris Lattner else { 265735a389344d21178ee280c2410401b2060b5b879cChris Lattner assert(VT.isFloatingPoint() && "Unknown value type!"); 26588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstantFP(0, VT)); 265935a389344d21178ee280c2410401b2060b5b879cChris Lattner } 26608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 26618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 26628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAP: { 26638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // If this operation is not supported, lower it to 'abort()' call 26648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::ArgListTy Args; 26658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman std::pair<SDValue, SDValue> CallResult = 26661d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson TLI.LowerCallTo(Node->getOperand(0), Type::getVoidTy(*DAG.getContext()), 26673d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng false, false, false, false, 0, CallingConv::C, 26683d2125c9dbac695c93f42c0f59fd040e413fd711Evan Cheng /*isTailCall=*/false, 266998ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 26708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getExternalSymbol("abort", TLI.getPointerTy()), 267146ada19645c981a0b7932487d163f7582074a4d9Bill Wendling Args, DAG, dl); 26728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(CallResult.second); 26738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 26748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 26758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND: 2676bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck case ISD::BITCAST: 26778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), Node->getValueType(0), 26788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 26798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 26808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 26818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_EXTEND: 26828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), 26838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType(), 26848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 26858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 26868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 26878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 26888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: we could fall back on load/store here too for targets without 26898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // SAR. However, it is doubtful that any exist. 2690e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 269187862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman EVT VT = Node->getValueType(0); 269287862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman EVT ShiftAmountTy = TLI.getShiftAmountTy(); 2693d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman if (VT.isVector()) 269487862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman ShiftAmountTy = VT; 2695d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman unsigned BitsDiff = VT.getScalarType().getSizeInBits() - 2696d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman ExtraVT.getScalarType().getSizeInBits(); 269787862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman SDValue ShiftCst = DAG.getConstant(BitsDiff, ShiftAmountTy); 26988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SHL, dl, Node->getValueType(0), 26998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), ShiftCst); 2700775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SRA, dl, Node->getValueType(0), Tmp1, ShiftCst); 2701775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 27028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 27038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 27048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: { 27058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // The only way we can lower this is to turn it into a TRUNCSTORE, 27068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // EXTLOAD pair, targetting a temporary location (a stack slot). 27078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 27088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: there is a choice here between constantly creating new stack 27098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // slots and always reusing the same one. We currently always create 27108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // new ones, as reuse may inhibit scheduling. 2711e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 27128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), ExtraVT, 27138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 27148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 27158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 27168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 27178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 27188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 27198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandLegalINT_TO_FP(Node->getOpcode() == ISD::SINT_TO_FP, 27208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), Node->getValueType(0), dl); 27218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 27228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 27238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: { 27248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SDValue True, False; 2725e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getOperand(0).getValueType(); 2726e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = Node->getValueType(0); 27273069cbf7b3ef9a31bbb8e434686b7259052c364aBenjamin Kramer APFloat apf(APInt::getNullValue(VT.getSizeInBits())); 27288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APInt x = APInt::getSignBit(NVT.getSizeInBits()); 27298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman (void)apf.convertFromAPInt(x, false, APFloat::rmNearestTiesToEven); 27308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getConstantFP(apf, VT); 27318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), 27328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), 27338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, ISD::SETLT); 27348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman True = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, Node->getOperand(0)); 2735775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling False = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, 2736775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getNode(ISD::FSUB, dl, VT, 2737775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(0), Tmp1)); 27388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman False = DAG.getNode(ISD::XOR, dl, NVT, False, 27398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(x, NVT)); 27408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, True, False); 27418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 27428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 27438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 2744509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VAARG: { 2745509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman const Value *V = cast<SrcValueSDNode>(Node->getOperand(2))->getValue(); 2746e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2747509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2748509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 274972d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola unsigned Align = Node->getConstantOperandVal(3); 275072d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola 2751ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner SDValue VAListLoad = DAG.getLoad(TLI.getPointerTy(), dl, Tmp1, Tmp2, 2752ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(V), false, false, 0); 275372d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola SDValue VAList = VAListLoad; 275472d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola 2755cbeeae23c31d32b833c9c7c3e8984e4cbcf22f45Rafael Espindola if (Align > TLI.getMinStackArgumentAlignment()) { 2756cbeeae23c31d32b833c9c7c3e8984e4cbcf22f45Rafael Espindola assert(((Align & (Align-1)) == 0) && "Expected Align to be a power of 2"); 2757cbeeae23c31d32b833c9c7c3e8984e4cbcf22f45Rafael Espindola 275872d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola VAList = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList, 275972d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola DAG.getConstant(Align - 1, 276072d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola TLI.getPointerTy())); 276172d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola 276272d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola VAList = DAG.getNode(ISD::AND, dl, TLI.getPointerTy(), VAList, 276307e3a38c78d2788e05d716e7fa552b9449c87c33Chris Lattner DAG.getConstant(-(int64_t)Align, 276472d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola TLI.getPointerTy())); 276572d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola } 276672d13ff755fe8484c89468252f945ba23fe98f71Rafael Espindola 2767509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Increment the pointer, VAList, to the next vaarg 2768509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList, 2769509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(TLI.getTargetData()-> 2770adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng getTypeAllocSize(VT.getTypeForEVT(*DAG.getContext())), 2771509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TLI.getPointerTy())); 2772509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Store the incremented VAList to the legalized pointer 27736229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner Tmp3 = DAG.getStore(VAListLoad.getValue(1), dl, Tmp3, Tmp2, 27746229d0acb8f395552131a7015a5d1e7b2bae2111Chris Lattner MachinePointerInfo(V), false, false, 0); 2775509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Load the actual argument out of the pointer VAList 2776ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Results.push_back(DAG.getLoad(VT, dl, Tmp3, VAList, MachinePointerInfo(), 27771e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0)); 2778509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Results[0].getValue(1)); 2779509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2780509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 27818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VACOPY: { 27828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This defaults to loading a pointer from the input and storing it to the 27838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // output, returning the chain. 27848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VD = cast<SrcValueSDNode>(Node->getOperand(3))->getValue(); 27858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VS = cast<SrcValueSDNode>(Node->getOperand(4))->getValue(); 27868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getLoad(TLI.getPointerTy(), dl, Node->getOperand(0), 2787ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Node->getOperand(2), MachinePointerInfo(VS), 2788ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner false, false, 0); 2789ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner Tmp1 = DAG.getStore(Tmp1.getValue(1), dl, Tmp1, Node->getOperand(1), 2790ecf42c4720aba6ee315d0166045c54187ac2de4dChris Lattner MachinePointerInfo(VD), false, false, 0); 2791775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 27928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 27938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 27948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 27958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOperand(0).getValueType().getVectorNumElements() == 1) 27968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This must be an access of the only element. Return it. 2797bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp1 = DAG.getNode(ISD::BITCAST, dl, Node->getValueType(0), 27988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 27998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 28008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandExtractFromVectorThroughStack(SDValue(Node, 0)); 28018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 28028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 28038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_SUBVECTOR: 2804775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandExtractFromVectorThroughStack(SDValue(Node, 0))); 28058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 2806509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::CONCAT_VECTORS: { 2807775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandVectorBuildThroughStack(Node)); 2808509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2809509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 28108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SCALAR_TO_VECTOR: 2811775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandSCALAR_TO_VECTOR(Node)); 28128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 28133f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INSERT_VECTOR_ELT: 2814775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandINSERT_VECTOR_ELT(Node->getOperand(0), 2815775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1), 2816775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(2), dl)); 28173f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 2818509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 2819509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 2820509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 2821509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 2822e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2823e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 282414b2141497a913a2d5b508a0174ba09cac61e0bfBob Wilson if (getTypeAction(EltVT) == Promote) 282514b2141497a913a2d5b508a0174ba09cac61e0bfBob Wilson EltVT = TLI.getTypeToTransformTo(*DAG.getContext(), EltVT); 2826509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned NumElems = VT.getVectorNumElements(); 2827509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<SDValue, 8> Ops; 2828509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman for (unsigned i = 0; i != NumElems; ++i) { 2829509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Mask[i] < 0) { 2830509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getUNDEF(EltVT)); 2831509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman continue; 2832509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2833509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned Idx = Mask[i]; 2834509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Idx < NumElems) 2835775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2836775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(0), 2837775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getIntPtrConstant(Idx))); 2838509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 2839775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2840775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1), 2841775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getIntPtrConstant(Idx - NumElems))); 2842509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2843509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &Ops[0], Ops.size()); 2844509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 2845509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2846509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 28478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: { 2848e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpTy = Node->getOperand(0).getValueType(); 28498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (cast<ConstantSDNode>(Node->getOperand(1))->getZExtValue()) { 28508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 1 -> Hi 28518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRL, dl, OpTy, Node->getOperand(0), 28528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OpTy.getSizeInBits()/2, 28538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TLI.getShiftAmountTy())); 28548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), Tmp1); 28558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 28568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 0 -> Lo 28578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), 28588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 28598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 28608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 28618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 28628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 28633f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKSAVE: 28643f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // Expand to CopyFromReg if the target set 28653f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // StackPointerRegisterToSaveRestore. 28663f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 2867775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, SP, 2868775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 28693f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Results[0].getValue(1)); 28703f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } else { 2871775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getUNDEF(Node->getValueType(0))); 28723f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Node->getOperand(0)); 28733f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 28743f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 28753f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKRESTORE: 2876775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // Expand to CopyToReg if the target set 2877775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // StackPointerRegisterToSaveRestore. 2878775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 2879775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyToReg(Node->getOperand(0), dl, SP, 2880775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1))); 2881775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 2882775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Node->getOperand(0)); 2883775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 28843f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 28854bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::FCOPYSIGN: 2886775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFCOPYSIGN(Node)); 28874bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 2888f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEG: 2889f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FNEG(X) -> Y = SUB -0.0, X 2890f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getConstantFP(-0.0, Node->getValueType(0)); 2891f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(ISD::FSUB, dl, Node->getValueType(0), Tmp1, 2892f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Node->getOperand(0)); 2893f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2894f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2895f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FABS: { 2896f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FABS(X) -> Y = (X >u 0.0) ? X : fneg(X). 2897e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2898f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = Node->getOperand(0); 2899f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp2 = DAG.getConstantFP(0.0, VT); 2900775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(Tmp1.getValueType()), 2901f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1, Tmp2, ISD::SETUGT); 2902775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp3 = DAG.getNode(ISD::FNEG, dl, VT, Tmp1); 2903775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SELECT, dl, VT, Tmp2, Tmp1, Tmp3); 2904f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2905f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2906f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 2907f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSQRT: 2908775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::SQRT_F32, RTLIB::SQRT_F64, 2909775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::SQRT_F80, RTLIB::SQRT_PPCF128)); 2910f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2911f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSIN: 2912775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::SIN_F32, RTLIB::SIN_F64, 2913775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::SIN_F80, RTLIB::SIN_PPCF128)); 2914f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2915f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCOS: 2916775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::COS_F32, RTLIB::COS_F64, 2917775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::COS_F80, RTLIB::COS_PPCF128)); 2918f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2919f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG: 2920775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG_F32, RTLIB::LOG_F64, 2921775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG_F80, RTLIB::LOG_PPCF128)); 2922f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2923f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG2: 2924775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG2_F32, RTLIB::LOG2_F64, 2925775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG2_F80, RTLIB::LOG2_PPCF128)); 2926f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2927f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG10: 2928775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG10_F32, RTLIB::LOG10_F64, 2929775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG10_F80, RTLIB::LOG10_PPCF128)); 2930f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2931f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP: 2932775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP_F32, RTLIB::EXP_F64, 2933775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::EXP_F80, RTLIB::EXP_PPCF128)); 2934f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2935f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP2: 2936775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP2_F32, RTLIB::EXP2_F64, 2937775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::EXP2_F80, RTLIB::EXP2_PPCF128)); 2938f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2939f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FTRUNC: 2940775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::TRUNC_F32, RTLIB::TRUNC_F64, 2941775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::TRUNC_F80, RTLIB::TRUNC_PPCF128)); 2942f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2943f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FFLOOR: 2944775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::FLOOR_F32, RTLIB::FLOOR_F64, 2945775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::FLOOR_F80, RTLIB::FLOOR_PPCF128)); 2946f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2947f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCEIL: 2948775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::CEIL_F32, RTLIB::CEIL_F64, 2949775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::CEIL_F80, RTLIB::CEIL_PPCF128)); 2950f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2951f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FRINT: 2952775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::RINT_F32, RTLIB::RINT_F64, 2953775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::RINT_F80, RTLIB::RINT_PPCF128)); 2954f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2955f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEARBYINT: 2956775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::NEARBYINT_F32, 2957775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_F64, 2958775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_F80, 2959775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_PPCF128)); 2960f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2961f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOWI: 2962775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::POWI_F32, RTLIB::POWI_F64, 2963775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::POWI_F80, RTLIB::POWI_PPCF128)); 2964f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2965f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOW: 2966775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::POW_F32, RTLIB::POW_F64, 2967775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::POW_F80, RTLIB::POW_PPCF128)); 2968f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2969f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FDIV: 2970775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::DIV_F32, RTLIB::DIV_F64, 2971775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::DIV_F80, RTLIB::DIV_PPCF128)); 2972f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2973f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FREM: 2974775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::REM_F32, RTLIB::REM_F64, 2975775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::REM_F80, RTLIB::REM_PPCF128)); 2976f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2977927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov case ISD::FP16_TO_FP32: 2978927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov Results.push_back(ExpandLibCall(RTLIB::FPEXT_F16_F32, Node, false)); 2979927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov break; 2980927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov case ISD::FP32_TO_FP16: 2981927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov Results.push_back(ExpandLibCall(RTLIB::FPROUND_F32_F16, Node, false)); 2982927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov break; 2983f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::ConstantFP: { 2984f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman ConstantFPSDNode *CFP = cast<ConstantFPSDNode>(Node); 2985775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // Check to see if this FP immediate is already legal. 2986775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // If this is a legal constant, turn it into a TargetConstantFP node. 2987a1eaa3c52b75d4fe2bcd4f7c52e56c405ee91d3cEvan Cheng if (TLI.isFPImmLegal(CFP->getValueAPF(), Node->getValueType(0))) 2988775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(SDValue(Node, 0)); 2989f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 2990775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandConstantFP(CFP, true, DAG, TLI)); 2991f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2992f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 299326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EHSELECTION: { 299426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionSelectorRegister(); 299526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 2996775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(1), dl, Reg, 2997775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 299826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 299926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 300026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 300126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EXCEPTIONADDR: { 300226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionAddressRegister(); 300326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 3004775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, Reg, 3005775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 300626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 300726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 300826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 300926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::SUB: { 3010e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 301126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ISD::ADD, VT) && 301226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman TLI.isOperationLegalOrCustom(ISD::XOR, VT) && 301326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "Don't know how to expand this subtraction!"); 301426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ISD::XOR, dl, VT, Node->getOperand(1), 301526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman DAG.getConstant(APInt::getAllOnesValue(VT.getSizeInBits()), VT)); 3016775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::ADD, dl, VT, Tmp2, DAG.getConstant(1, VT)); 3017775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::ADD, dl, VT, Node->getOperand(0), Tmp1)); 301826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 301926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 3020f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UREM: 3021f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SREM: { 3022e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 302326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 3024f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SREM; 3025f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivOpc = isSigned ? ISD::SDIV : ISD::UDIV; 3026f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 3027f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(0); 3028f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp3 = Node->getOperand(1); 30293be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) { 30303be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Tmp2, Tmp3).getValue(1); 30313be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } else if (TLI.isOperationLegalOrCustom(DivOpc, VT)) { 3032f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // X % Y -> X-X/Y*Y 3033f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivOpc, dl, VT, Tmp2, Tmp3); 3034f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, VT, Tmp1, Tmp3); 3035f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, Tmp2, Tmp1); 3036f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else if (isSigned) { 30378983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, true, 30388983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SREM_I8, 30398983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SREM_I16, RTLIB::SREM_I32, 3040f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::SREM_I64, RTLIB::SREM_I128); 3041f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else { 30428983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, false, 30438983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UREM_I8, 30448983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UREM_I16, RTLIB::UREM_I32, 304526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::UREM_I64, RTLIB::UREM_I128); 3046f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 304726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 304826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 304926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 3050f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UDIV: 3051f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SDIV: { 3052f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SDIV; 3053f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 3054e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 305526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 3056f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) 3057f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Node->getOperand(0), 3058f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(1)); 3059f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else if (isSigned) 30608983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, true, 30618983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SDIV_I8, 30628983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SDIV_I16, RTLIB::SDIV_I32, 306326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::SDIV_I64, RTLIB::SDIV_I128); 3064f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 30658983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, false, 30668983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UDIV_I8, 30678983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UDIV_I16, RTLIB::UDIV_I32, 3068f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::UDIV_I64, RTLIB::UDIV_I128); 306926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 307026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 307126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 307226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHU: 307326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHS: { 307426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned ExpandOpcode = Node->getOpcode() == ISD::MULHU ? ISD::UMUL_LOHI : 307526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman ISD::SMUL_LOHI; 3076e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 307726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 307826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ExpandOpcode, VT) && 307926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "If this wasn't legal, it shouldn't have been created!"); 308026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ExpandOpcode, dl, VTs, Node->getOperand(0), 308126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getOperand(1)); 308226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1.getValue(1)); 308326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 308426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 308526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MUL: { 3086e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 308726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 308826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // See if multiply or divide can be lowered using two-result operations. 308926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // We just need the low half of the multiply; try both the signed 309026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // and unsigned forms. If the target supports both SMUL_LOHI and 309126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // UMUL_LOHI, form a preference by checking which forms of plain 309226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // MULH it supports. 309326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasSMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::SMUL_LOHI, VT); 309426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasUMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::UMUL_LOHI, VT); 309526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHS = TLI.isOperationLegalOrCustom(ISD::MULHS, VT); 309626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHU = TLI.isOperationLegalOrCustom(ISD::MULHU, VT); 309726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned OpToUse = 0; 309826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (HasSMUL_LOHI && !HasMULHS) { 309926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 310026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI && !HasMULHU) { 310126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 310226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasSMUL_LOHI) { 310326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 310426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI) { 310526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 310626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 310726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (OpToUse) { 3108775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(OpToUse, dl, VTs, Node->getOperand(0), 3109775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1))); 311026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 311126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 31128983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, false, 31138983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::MUL_I8, 31148983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::MUL_I16, RTLIB::MUL_I32, 311526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::MUL_I64, RTLIB::MUL_I128); 311626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 311726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 311826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 31194bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SADDO: 31204bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SSUBO: { 31214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 31224bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 31234bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::SADDO ? 31244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 31254bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 31264bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 3127122d06de7482dcb39e7dbcbfe302e39cc55627e5Bill Wendling EVT OType = Node->getValueType(1); 3128775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling 31294bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Zero = DAG.getConstant(0, LHS.getValueType()); 31304bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 31314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // LHSSign -> LHS >= 0 31324bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RHSSign -> RHS >= 0 31334bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // SumSign -> Sum >= 0 31344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 31354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Add: 31364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign == RHSSign) && (LHSSign != SumSign) 31374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Sub: 31384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign != RHSSign) && (LHSSign != SumSign) 31394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 31404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHSSign = DAG.getSetCC(dl, OType, LHS, Zero, ISD::SETGE); 31414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHSSign = DAG.getSetCC(dl, OType, RHS, Zero, ISD::SETGE); 31424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignsMatch = DAG.getSetCC(dl, OType, LHSSign, RHSSign, 31434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Node->getOpcode() == ISD::SADDO ? 31444bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETEQ : ISD::SETNE); 31454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 31464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSign = DAG.getSetCC(dl, OType, Sum, Zero, ISD::SETGE); 31474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSignNE = DAG.getSetCC(dl, OType, LHSSign, SumSign, ISD::SETNE); 31484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 31494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Cmp = DAG.getNode(ISD::AND, dl, OType, SignsMatch, SumSignNE); 31504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Cmp); 31514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 31524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 31534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::UADDO: 31544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::USUBO: { 31554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 31564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 31574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::UADDO ? 31584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 31594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 31604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 3161775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getSetCC(dl, Node->getValueType(1), Sum, LHS, 3162775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOpcode () == ISD::UADDO ? 3163775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling ISD::SETULT : ISD::SETUGT)); 31644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 31654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 3166db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::UMULO: 3167db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::SMULO: { 3168e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 3169db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue LHS = Node->getOperand(0); 3170db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue RHS = Node->getOperand(1); 3171db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue BottomHalf; 3172db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue TopHalf; 3173ec9d8b00470b2ddabef4e1b58b4f60d69995d8ceNuno Lopes static const unsigned Ops[2][3] = 3174db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { { ISD::MULHU, ISD::UMUL_LOHI, ISD::ZERO_EXTEND }, 3175db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { ISD::MULHS, ISD::SMUL_LOHI, ISD::SIGN_EXTEND }}; 3176db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman bool isSigned = Node->getOpcode() == ISD::SMULO; 3177db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (TLI.isOperationLegalOrCustom(Ops[isSigned][0], VT)) { 3178db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::MUL, dl, VT, LHS, RHS); 3179db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(Ops[isSigned][0], dl, VT, LHS, RHS); 3180db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else if (TLI.isOperationLegalOrCustom(Ops[isSigned][1], VT)) { 3181db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(Ops[isSigned][1], dl, DAG.getVTList(VT, VT), LHS, 3182db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS); 3183db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = BottomHalf.getValue(1); 318438a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher } else if (TLI.isTypeLegal(EVT::getIntegerVT(*DAG.getContext(), 318538a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher VT.getSizeInBits() * 2))) { 318623b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT WideVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits() * 2); 3187db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman LHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, LHS); 3188db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, RHS); 3189db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, WideVT, LHS, RHS); 3190db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 3191db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(0)); 3192db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 3193db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(1)); 319438a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher } else { 319538a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher // We can fall back to a libcall with an illegal type for the MUL if we 319638a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher // have a libcall big enough. 319738a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher // Also, we can fall back to a division in some cases, but that's a big 319838a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher // performance hit in the general case. 319938a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher EVT WideVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits() * 2); 320038a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher RTLIB::Libcall LC = RTLIB::UNKNOWN_LIBCALL; 320138a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher if (WideVT == MVT::i16) 320238a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher LC = RTLIB::MUL_I16; 320338a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher else if (WideVT == MVT::i32) 320438a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher LC = RTLIB::MUL_I32; 320538a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher else if (WideVT == MVT::i64) 320638a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher LC = RTLIB::MUL_I64; 320738a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher else if (WideVT == MVT::i128) 320838a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher LC = RTLIB::MUL_I128; 320938a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher assert(LC != RTLIB::UNKNOWN_LIBCALL && "Cannot expand this operation!"); 321038a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher LHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, LHS); 321138a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher RHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, RHS); 321238a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher 321338a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher SDValue Ops[2] = { LHS, RHS }; 321438a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher SDValue Ret = ExpandLibCall(LC, Node, Ops); 321538a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher BottomHalf = DAG.getNode(ISD::TRUNCATE, dl, VT, Ret); 321638a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher TopHalf = DAG.getNode(ISD::SRL, dl, Ret.getValueType(), Ret, 321738a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher DAG.getConstant(VT.getSizeInBits(), TLI.getPointerTy())); 321838a18261b97a0b7e0ed75b1c8edd81ec9bd01085Eric Christopher TopHalf = DAG.getNode(ISD::TRUNCATE, dl, VT, TopHalf); 3219db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 3220db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (isSigned) { 3221db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getConstant(VT.getSizeInBits() - 1, TLI.getShiftAmountTy()); 3222db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::SRA, dl, VT, BottomHalf, Tmp1); 3223db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, Tmp1, 3224db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman ISD::SETNE); 3225db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else { 3226db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, 3227db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getConstant(0, VT), ISD::SETNE); 3228db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 3229db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(BottomHalf); 3230db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(TopHalf); 3231db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman break; 3232db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 3233f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BUILD_PAIR: { 3234e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PairTy = Node->getValueType(0); 3235f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, PairTy, Node->getOperand(0)); 3236f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = DAG.getNode(ISD::ANY_EXTEND, dl, PairTy, Node->getOperand(1)); 3237775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2 = DAG.getNode(ISD::SHL, dl, PairTy, Tmp2, 3238f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(PairTy.getSizeInBits()/2, 3239f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman TLI.getShiftAmountTy())); 3240775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::OR, dl, PairTy, Tmp1, Tmp2)); 3241f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 3242f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 3243509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::SELECT: 3244509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 3245509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 3246509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = Node->getOperand(2); 3247775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (Tmp1.getOpcode() == ISD::SETCC) { 3248509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1.getOperand(0), Tmp1.getOperand(1), 3249509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, 3250509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<CondCodeSDNode>(Tmp1.getOperand(2))->get()); 3251775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 3252509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1, 3253509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(0, Tmp1.getValueType()), 3254509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, ISD::SETNE); 3255775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 3256509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3257509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 32584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::BR_JT: { 32594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Node->getOperand(0); 32604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Table = Node->getOperand(1); 32614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Index = Node->getOperand(2); 32624bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 3263e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PTy = TLI.getPointerTy(); 3264071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner 3265071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner const TargetData &TD = *TLI.getTargetData(); 3266071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner unsigned EntrySize = 3267071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner DAG.getMachineFunction().getJumpTableInfo()->getEntrySize(TD); 32686e9926108a69efbc11f1cadf947e98500e4d4228Jim Grosbach 3269071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner Index = DAG.getNode(ISD::MUL, dl, PTy, 32704bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Index, DAG.getConstant(EntrySize, PTy)); 32714bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Addr = DAG.getNode(ISD::ADD, dl, PTy, Index, Table); 32724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 327323b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), EntrySize * 8); 3274bcc8017c738e92d9c1af221b11c4916cb524184eEvan Cheng SDValue LD = DAG.getExtLoad(ISD::SEXTLOAD, PTy, dl, Chain, Addr, 327585ca1066328639119f94c47a83b698c48b84ebb0Chris Lattner MachinePointerInfo::getJumpTable(), MemVT, 32761e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 32774bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = LD; 327855e59c186303ff02c0be7429da3b1b36c347f164Dan Gohman if (TM.getRelocationModel() == Reloc::PIC_) { 32794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // For PIC, the sequence is: 3280775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // BRIND(load(Jumptable + index) + RelocBase) 32814bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RelocBase can be JumpTable, GOT or some sort of global base. 32824bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = DAG.getNode(ISD::ADD, dl, PTy, Addr, 32834bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getPICJumpTableRelocBase(Table, DAG)); 32844bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 3285825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BRIND, dl, MVT::Other, LD.getValue(1), Addr); 32864bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 32874bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 32884bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 3289f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BRCOND: 3290f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Expand brcond's setcc into its constituent parts and create a BR_CC 3291f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Node. 3292f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = Node->getOperand(0); 3293f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(1); 3294775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (Tmp2.getOpcode() == ISD::SETCC) { 3295825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, 3296f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1, Tmp2.getOperand(2), 3297f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2.getOperand(0), Tmp2.getOperand(1), 3298f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 3299775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 3300825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, Tmp1, 3301f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getCondCode(ISD::SETNE), Tmp2, 3302f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(0, Tmp2.getValueType()), 3303f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 3304775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 3305f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(Tmp1); 3306f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 3307ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 3308ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = Node->getOperand(0); 3309ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp2 = Node->getOperand(1); 3310ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp3 = Node->getOperand(2); 3311775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling LegalizeSetCCCondCode(Node->getValueType(0), Tmp1, Tmp2, Tmp3, dl); 3312ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 3313ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // If we expanded the SETCC into an AND/OR, return the new node 3314ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman if (Tmp2.getNode() == 0) { 3315ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 3316ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3317ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 3318ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 3319ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // Otherwise, SETCC for the given comparison type must be completely 3320ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // illegal; expand it into a SELECT_CC. 3321e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 3322ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, VT, Tmp1, Tmp2, 3323ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman DAG.getConstant(1, VT), DAG.getConstant(0, VT), Tmp3); 3324ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 3325ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3326ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 3327bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::SELECT_CC: { 3328bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // LHS 3329bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(1); // RHS 3330bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(2); // True 3331bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(3); // False 3332bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue CC = Node->getOperand(4); 3333bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3334bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp1.getValueType()), 3335775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1, Tmp2, CC, dl); 3336bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3337bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp2.getNode() && "Can't legalize SELECT_CC with legal condition!"); 3338bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = DAG.getConstant(0, Tmp1.getValueType()); 3339bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman CC = DAG.getCondCode(ISD::SETNE); 3340bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, Node->getValueType(0), Tmp1, Tmp2, 3341bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Tmp4, CC); 3342bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 3343bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 3344bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 3345bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::BR_CC: { 3346bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // Chain 3347bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(2); // LHS 3348bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(3); // RHS 3349bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(1); // CC 3350bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3351bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp2.getValueType()), 3352775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2, Tmp3, Tmp4, dl); 3353bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 3354bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3355bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp3.getNode() && "Can't legalize BR_CC with legal condition!"); 3356bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = DAG.getConstant(0, Tmp2.getValueType()); 3357bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = DAG.getCondCode(ISD::SETNE); 3358bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::BR_CC, dl, Node->getValueType(0), Tmp1, Tmp4, Tmp2, 3359bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Node->getOperand(4)); 3360bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 3361bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 3362bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 33633f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GLOBAL_OFFSET_TABLE: 33643f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalAddress: 33653f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalTLSAddress: 33663f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ExternalSymbol: 33673f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ConstantPool: 33683f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::JumpTable: 33693f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_W_CHAIN: 33703f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_WO_CHAIN: 33713f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_VOID: 33723f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // FIXME: Custom lowering for these operations shouldn't return null! 33733f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 33743f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(SDValue(Node, i)); 33753f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 33768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 33778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 33788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::PromoteNode(SDNode *Node, 33798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 3380e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OVT = Node->getValueType(0); 33818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::UINT_TO_FP || 3382a64eb92fe305424ebde2e3de2b12160b8bf76047Eli Friedman Node->getOpcode() == ISD::SINT_TO_FP || 3383775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOpcode() == ISD::SETCC) { 33848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT = Node->getOperand(0).getValueType(); 3385775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 3386e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), OVT); 33878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 3388509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SDValue Tmp1, Tmp2, Tmp3; 33898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 33908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 33918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 33928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 33938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Zero extend the argument. 33948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0)); 33958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Perform the larger operation. 33969a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1); 33978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::CTTZ) { 33988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman //if Tmp1 == sizeinbits(NVT) then Tmp1 = sizeinbits(Old VT) 33999a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), 34008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, DAG.getConstant(NVT.getSizeInBits(), NVT), 34018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ISD::SETEQ); 34028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, 34038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OVT.getSizeInBits(), NVT), Tmp1); 34048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else if (Node->getOpcode() == ISD::CTLZ) { 34058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Tmp1 = Tmp1 - (sizeinbits(NVT) - sizeinbits(Old VT)) 34068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, NVT, Tmp1, 34078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(NVT.getSizeInBits() - 34088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT.getSizeInBits(), NVT)); 34098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 3410775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::TRUNCATE, dl, OVT, Tmp1)); 34118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 34128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: { 34138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman unsigned DiffBits = NVT.getSizeInBits() - OVT.getSizeInBits(); 3414167bea71a4bd19329a218f5e1bd8facfd90a0cf9Bill Wendling Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0)); 3415775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::BSWAP, dl, NVT, Tmp1); 3416775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SRL, dl, NVT, Tmp1, 3417775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getConstant(DiffBits, TLI.getShiftAmountTy())); 3418775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 34198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 34208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 34218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: 34228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_SINT: 34238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalFP_TO_INT(Node->getOperand(0), Node->getValueType(0), 34248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::FP_TO_SINT, dl); 34258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 34268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 34278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 34288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 34298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalINT_TO_FP(Node->getOperand(0), Node->getValueType(0), 34308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::SINT_TO_FP, dl); 34318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 34328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 3433f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::AND: 3434f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::OR: 3435c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::XOR: { 3436c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen unsigned ExtOp, TruncOp; 3437c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen if (OVT.isVector()) { 3438bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck ExtOp = ISD::BITCAST; 3439bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck TruncOp = ISD::BITCAST; 344035a389344d21178ee280c2410401b2060b5b879cChris Lattner } else { 344135a389344d21178ee280c2410401b2060b5b879cChris Lattner assert(OVT.isInteger() && "Cannot promote logic operation"); 3442c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen ExtOp = ISD::ANY_EXTEND; 3443c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen TruncOp = ISD::TRUNCATE; 3444c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3445c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Promote each of the values to the new type. 3446c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 3447c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3448c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Perform the larger operation, then convert back 3449775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1, Tmp2); 3450775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(TruncOp, dl, OVT, Tmp1)); 3451f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3452c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3453c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::SELECT: { 3454509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned ExtOp, TruncOp; 34554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Node->getValueType(0).isVector()) { 3456bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck ExtOp = ISD::BITCAST; 3457bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck TruncOp = ISD::BITCAST; 34584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else if (Node->getValueType(0).isInteger()) { 3459509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::ANY_EXTEND; 3460509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::TRUNCATE; 3461509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } else { 3462509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::FP_EXTEND; 3463509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::FP_ROUND; 3464509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3465509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 3466509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Promote each of the values to the new type. 3467509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3468509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(2)); 3469509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Perform the larger operation, then round down. 3470509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp1, Tmp2, Tmp3); 3471509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (TruncOp != ISD::FP_ROUND) 3472775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1); 3473509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 3474775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1, 3475509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(0)); 3476775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 3477509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3478c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3479509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 3480509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 3481509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 3482509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3483509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Cast the two input vectors. 3484bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp1 = DAG.getNode(ISD::BITCAST, dl, NVT, Node->getOperand(0)); 3485bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp2 = DAG.getNode(ISD::BITCAST, dl, NVT, Node->getOperand(1)); 3486509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3487509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Convert the shuffle mask to the right # elements. 3488775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = ShuffleWithNarrowerEltType(NVT, OVT, dl, Tmp1, Tmp2, Mask); 3489bf17cfa3f904e488e898ac2e3af706fd1a892f08Wesley Peck Tmp1 = DAG.getNode(ISD::BITCAST, dl, OVT, Tmp1); 3490509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3491509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3492509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3493ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 349478d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen unsigned ExtOp = ISD::FP_EXTEND; 349578d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen if (NVT.isInteger()) { 349678d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ISD::CondCode CCCode = 349778d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen cast<CondCodeSDNode>(Node->getOperand(2))->get(); 349878d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ExtOp = isSignedIntSetCC(CCCode) ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND; 3499ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 350078d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 350178d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3502ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(DAG.getNode(ISD::SETCC, dl, Node->getValueType(0), 3503ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1, Tmp2, Node->getOperand(2))); 3504ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3505ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 35068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 35078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 35088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 35093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// SelectionDAG::Legalize - This is the entry point for the file. 35103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 3511714efc63d4319b771d89a95aa7a42d400f03d8c9Dan Gohmanvoid SelectionDAG::Legalize(CodeGenOpt::Level OptLevel) { 35123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// run - This is the main entry point to this class. 35133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 35141fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(*this, OptLevel).LegalizeDAG(); 35153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 35163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 3517