LegalizeDAG.cpp revision a5afa1cb214146fd270c86f606b634c8ed6682f2
13e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===-- LegalizeDAG.cpp - Implement SelectionDAG::Legalize ----------------===// 2edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman// 33e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// The LLVM Compiler Infrastructure 43e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 54ee451de366474b9c228b4e5fa573795a715216dChris Lattner// This file is distributed under the University of Illinois Open Source 64ee451de366474b9c228b4e5fa573795a715216dChris Lattner// License. See LICENSE.TXT for details. 7edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman// 83e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 93e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// This file implements the SelectionDAG::Legalize method. 113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/CodeGen/SelectionDAG.h" 153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/CodeGen/MachineFunction.h" 1645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner#include "llvm/CodeGen/MachineFrameInfo.h" 17acd80ac7bb19f8bdfa55336d567c9ecbe695c8b8Jim Laskey#include "llvm/CodeGen/MachineJumpTableInfo.h" 1884bc5427d6883f73cfeae3da640acd011d35c006Chris Lattner#include "llvm/CodeGen/MachineModuleInfo.h" 1983489bb7700c69b7a4a8da59365c42d3f5c8129bDevang Patel#include "llvm/Analysis/DebugInfo.h" 2069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman#include "llvm/CodeGen/PseudoSourceValue.h" 2161bbbabe3da27479cc9a3a36e49091a1141ba7a3Evan Cheng#include "llvm/Target/TargetFrameInfo.h" 223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/Target/TargetLowering.h" 23e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner#include "llvm/Target/TargetData.h" 243d4ce1108520a4dcf31cb01523e145d286ee64c1Evan Cheng#include "llvm/Target/TargetMachine.h" 250f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner#include "llvm/Target/TargetOptions.h" 26adf6a965a321372c640845407195594835921eb4Chris Lattner#include "llvm/CallingConv.h" 273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/Constants.h" 28c10305743c313558405079452138f03124e87581Reid Spencer#include "llvm/DerivedTypes.h" 2986e6cb924b85e7a288a4d8bfde5d1a8fb9810c88Bill Wendling#include "llvm/Function.h" 3083489bb7700c69b7a4a8da59365c42d3f5c8129bDevang Patel#include "llvm/GlobalVariable.h" 319adc0abad3c3ed40a268ccbcee0c74cb9e1359feOwen Anderson#include "llvm/LLVMContext.h" 325e46a19ec848cd4fc9649bd5170c43d9e657668cChris Lattner#include "llvm/Support/CommandLine.h" 33993aacedfdc3f156f667b4efa280ee79eab3b898David Greene#include "llvm/Support/Debug.h" 34dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands#include "llvm/Support/MathExtras.h" 3545cfe545ec8177262dabc70580ce05feaa1c3880Chris Lattner#include "llvm/Support/raw_ostream.h" 367971514755a08ec156a1b9c0f7f05d67919c56b7Chris Lattner#include "llvm/ADT/DenseMap.h" 37f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner#include "llvm/ADT/SmallVector.h" 3800755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner#include "llvm/ADT/SmallPtrSet.h" 393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerusing namespace llvm; 403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// SelectionDAGLegalize - This takes an arbitrary SelectionDAG as input and 433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// hacks on it until the target machine can handle it. This involves 443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating value sizes the machine cannot handle (promoting small sizes to 453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// large sizes or splitting up large values into small values) as well as 463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating operations the machine cannot handle. 473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// This code also does a small amount of optimization and recognition of idioms 493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// as part of its processing. For example, if a target does not support a 503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 'setcc' instruction efficiently, but does support 'brcc' instruction, this 513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// will attempt merge setcc and brc instructions into brcc's. 523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnernamespace { 546726b6d75a8b679068a58cb954ba97cf9d1690baNick Lewyckyclass SelectionDAGLegalize { 5555e59c186303ff02c0be7429da3b1b36c347f164Dan Gohman const TargetMachine &TM; 56d858e90f039f5fcdc2fa93035e911a5a9505cc50Dan Gohman const TargetLowering &TLI; 573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SelectionDAG &DAG; 5898a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel; 593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 606831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Libcall insertion helpers. 61fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 626831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// LastCALLSEQ_END - This keeps track of the CALLSEQ_END node that has been 636831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// legalized. We use this to ensure that calls are properly serialized 646831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// against each other, including inserted libcalls. 65475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LastCALLSEQ_END; 66fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 676831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// IsLegalizingCall - This member is used *only* for purposes of providing 68fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel /// helpful assertions that a libcall isn't created while another call is 696831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// being legalized (which could lead to non-serialized call sequences). 706831a815999dde4cf801e2076e66b4943964daf2Chris Lattner bool IsLegalizingCall; 71fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner enum LegalizeAction { 7368a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Legal, // The target natively supports this operation. 7468a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Promote, // This operation should be executed in a larger type. 75d74ea2bbd8bb630331f35ead42d385249bd42af8Chris Lattner Expand // Try to expand this to other ops, otherwise use a libcall. 763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner }; 77fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// ValueTypeActions - This is a bitvector that contains two bits for each 793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// value type, where the two bits correspond to the LegalizeAction enum. 803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// This can be queried with "getTypeAction(VT)". 8168a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner TargetLowering::ValueTypeActionImpl ValueTypeActions; 823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// LegalizedNodes - For nodes that are of legal width, and that have more 843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// than one use, this map indicates what regularized operand to use. This 853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// allows us to avoid legalizing the same thing more than once. 86475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue> LegalizedNodes; 873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 88475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void AddLegalizedOperand(SDValue From, SDValue To) { 8969a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(From, To)); 9069a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner // If someone requests legalization of the new node, return itself. 9169a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner if (From != To) 9269a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(To, To)); 938afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner } 948afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner 953e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerpublic: 961fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(SelectionDAG &DAG, CodeGenOpt::Level ol); 973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// getTypeAction - Return how we should legalize values of this type, either 993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// it is already legal or we need to expand it into multiple registers of 1003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// smaller integer type, or we need to promote it to a larger type. 101e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson LegalizeAction getTypeAction(EVT VT) const { 10223b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson return 10323b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson (LegalizeAction)ValueTypeActions.getTypeAction(*DAG.getContext(), VT); 1043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// isTypeLegal - Return true if this type is legal on this target. 1073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 108e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson bool isTypeLegal(EVT VT) const { 1093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return getTypeAction(VT) == Legal; 1103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner void LegalizeDAG(); 1133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 114456a93afcec7740c45cafa8354317f7b17987a6dChris Lattnerprivate: 115c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// LegalizeOp - We know that the specified value has a legal type. 116c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// Recursively ensure that the operands have legal types, then return the 117c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// result. 118475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LegalizeOp(SDValue O); 119fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1207ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue OptimizeFloatStore(StoreSDNode *ST); 1217ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 1226867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// PerformInsertVectorEltInMemory - Some target cannot handle a variable 1236867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 1246867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// is necessary to spill the vector being inserted into to memory, perform 1256867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// the insert there, and then read the result back. 126475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue PerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, 1273f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 1283f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, 1293f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 130826695281344e3a4c4d44d73dd155107aafd689bDan Gohman 1315a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1325a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// performs the same shuffe in terms of order or result bytes, but on a type 1335a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// whose vector element type is narrower than the original shuffle type. 1345a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 135e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl, 1365a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue N1, SDValue N2, 1375a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SmallVectorImpl<int> &Mask) const; 138fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 139c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner bool LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 14000755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo); 1416831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 142e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson void LegalizeSetCCCondCode(EVT VT, SDValue &LHS, SDValue &RHS, SDValue &CC, 143775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DebugLoc dl); 144fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 14547b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman SDValue ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, bool isSigned); 146f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman SDValue ExpandFPLibCall(SDNode *Node, RTLIB::Libcall Call_F32, 147f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, RTLIB::Libcall Call_F80, 148f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128); 1498983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov SDValue ExpandIntLibCall(SDNode *Node, bool isSigned, 1508983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I8, 1518983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I16, 1528983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I32, 1538983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I64, 154f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128); 155475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 156e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue EmitStackConvert(SDValue SrcOp, EVT SlotVT, EVT DestVT, DebugLoc dl); 157475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandBUILD_VECTOR(SDNode *Node); 158475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandSCALAR_TO_VECTOR(SDNode *Node); 1594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman void ExpandDYNAMIC_STACKALLOC(SDNode *Node, 1604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results); 1614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue ExpandFCOPYSIGN(SDNode *Node); 162e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue ExpandLegalINT_TO_FP(bool isSigned, SDValue LegalOp, EVT DestVT, 163af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 164e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue PromoteLegalINT_TO_FP(SDValue LegalOp, EVT DestVT, bool isSigned, 165af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 166e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue PromoteLegalFP_TO_INT(SDValue LegalOp, EVT DestVT, bool isSigned, 167af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 168475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1698a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBSWAP(SDValue Op, DebugLoc dl); 1708a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBitCount(unsigned Opc, SDValue Op, DebugLoc dl); 171475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1723d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue ExpandExtractFromVectorThroughStack(SDValue Op); 1737ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue ExpandVectorBuildThroughStack(SDNode* Node); 1748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 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> 1845a5ca1519e04310f585197c20e7ae584b7f2d11fNate BegemanSDValue 185e50ed30282bb5b4a9ed952580523f2dda16215acOwen AndersonSelectionDAGLegalize::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]); 1969008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 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) { 2019008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 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(); 2236831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = false; 224e5ab34e05d701da042619bf540046efc3c7bc41fMon P Wang 225ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // The legalize process is inherently a bottom-up recursive process (users 226ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // legalize their uses before themselves). Given infinite stack space, we 227ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // could just start legalizing on the root and traverse the whole graph. In 228ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // practice however, this causes us to run out of stack space on large basic 22932fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // blocks. To avoid this problem, compute an ordering of the nodes where each 23032fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // node is only legalized after all of its operands are legalized. 231f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman DAG.AssignTopologicalOrder(); 232f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman for (SelectionDAG::allnodes_iterator I = DAG.allnodes_begin(), 2337896c9f436a4eda5ec15e882a7505ba482a2fcd0Chris Lattner E = prior(DAG.allnodes_end()); I != llvm::next(E); ++I) 234b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(I, 0)); 23532fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner 23632fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // Finally, it's possible the root changed. Get the new root. 237475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue OldRoot = DAG.getRoot(); 23832fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner assert(LegalizedNodes.count(OldRoot) && "Root didn't get legalized?"); 23932fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner DAG.setRoot(LegalizedNodes[OldRoot]); 2403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LegalizedNodes.clear(); 2423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remove dead nodes now. 244190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner DAG.RemoveDeadNodes(); 2453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2476831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 2486831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// FindCallEndFromCallStart - Given a chained node that is part of a call 2496831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_END node that terminates the call sequence. 2506831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallEndFromCallStart(SDNode *Node) { 2516831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_END) 2526831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Node; 2536831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->use_empty()) 2546831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; // No CallSeqEnd 255fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2566831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // The chain is usually at the end. 257475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue TheChain(Node, Node->getNumValues()-1); 258825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) { 2596831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Sometimes it's at the beginning. 260475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, 0); 261825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) { 2626831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Otherwise, hunt for it. 2636831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 1, e = Node->getNumValues(); i != e; ++i) 264825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Node->getValueType(i) == MVT::Other) { 265475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, i); 2666831a815999dde4cf801e2076e66b4943964daf2Chris Lattner break; 2676831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 268fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 269fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, we walked into a node without a chain. 270825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) 2716831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2726831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2736831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 274fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2756831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (SDNode::use_iterator UI = Node->use_begin(), 2766831a815999dde4cf801e2076e66b4943964daf2Chris Lattner E = Node->use_end(); UI != E; ++UI) { 277fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2786831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Make sure to only follow users of our token chain. 2798968450305c28444edc3c272d8752a8db0c2f34aDan Gohman SDNode *User = *UI; 2806831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) 2816831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (User->getOperand(i) == TheChain) 2826831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (SDNode *Result = FindCallEndFromCallStart(User)) 2836831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 2846831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2856831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2866831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 2876831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 288fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// FindCallStartFromCallEnd - Given a chained node that is part of a call 2896831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_START node that initiates the call sequence. 2906831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallStartFromCallEnd(SDNode *Node) { 2916831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(Node && "Didn't find callseq_start for a call??"); 2926831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_START) return Node; 293fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 294825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert(Node->getOperand(0).getValueType() == MVT::Other && 2956831a815999dde4cf801e2076e66b4943964daf2Chris Lattner "Node doesn't have a token chain argument!"); 296ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif return FindCallStartFromCallEnd(Node->getOperand(0).getNode()); 2976831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 2986831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 2996831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// LegalizeAllNodesNotLeadingTo - Recursively walk the uses of N, looking to 300fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// see if any uses can reach Dest. If no dest operands can get to dest, 3016831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// legalize them, legalize ourself, and return false, otherwise, return true. 302c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 303c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// Keep track of the nodes we fine that actually do lead to Dest in 304c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// NodesLeadingTo. This avoids retraversing them exponential number of times. 305c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 306c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattnerbool SelectionDAGLegalize::LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 30700755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo) { 3086831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (N == Dest) return true; // N certainly leads to Dest :) 309fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 310c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // If we've already processed this node and it does lead to Dest, there is no 311c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // need to reprocess it. 312c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (NodesLeadingTo.count(N)) return true; 313fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3146831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the first result of this node has been already legalized, then it cannot 3156831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // reach N. 31674807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman if (LegalizedNodes.count(SDValue(N, 0))) return false; 317fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3186831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node has not already been legalized. Check and legalize all 3196831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // operands. If none lead to Dest, then we can legalize this node. 3206831a815999dde4cf801e2076e66b4943964daf2Chris Lattner bool OperandsLeadToDest = false; 3216831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) 3226831a815999dde4cf801e2076e66b4943964daf2Chris Lattner OperandsLeadToDest |= // If an operand leads to Dest, so do we. 323ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif LegalizeAllNodesNotLeadingTo(N->getOperand(i).getNode(), Dest, NodesLeadingTo); 3246831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 325c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (OperandsLeadToDest) { 326c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo.insert(N); 327c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner return true; 328c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 3296831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3306831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node looks safe, legalize it and return false. 331b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(N, 0)); 3326831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return false; 3336831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 3346831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3359f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// ExpandConstantFP - Expands the ConstantFP node to an integer constant or 3369f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// a load from the constant pool. 337475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanstatic SDValue ExpandConstantFP(ConstantFPSDNode *CFP, bool UseCP, 3380d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman SelectionDAG &DAG, const TargetLowering &TLI) { 339004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng bool Extend = false; 34033c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen DebugLoc dl = CFP->getDebugLoc(); 341004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 342004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // If a FP immediate is precise when represented as a float and if the 343004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // target can do an extending load from float to double, we put it into 344004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // the constant pool as a float, even if it's is statically typed as a 345aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // double. This shrinks FP constants and canonicalizes them for targets where 346aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // an FP extending load is the same cost as a normal load (such as on the x87 347aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // fp stack or PPC FP unit). 348e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = CFP->getValueType(0); 3494fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman ConstantFP *LLVMC = const_cast<ConstantFP*>(CFP->getConstantFPValue()); 3509f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng if (!UseCP) { 351825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert((VT == MVT::f64 || VT == MVT::f32) && "Invalid type expansion"); 3527111b02c734c992b8c97d9918118768026dad79eDale Johannesen return DAG.getConstant(LLVMC->getValueAPF().bitcastToAPInt(), 353825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (VT == MVT::f64) ? MVT::i64 : MVT::i32); 354279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng } 355279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng 356e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OrigVT = VT; 357e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SVT = VT; 358825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson while (SVT != MVT::f32) { 359825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SVT = (MVT::SimpleValueType)(SVT.getSimpleVT().SimpleTy - 1); 360ef12057737229452c17983faa20857dba441ef05Evan Cheng if (CFP->isValueValidForType(SVT, CFP->getValueAPF()) && 361ef12057737229452c17983faa20857dba441ef05Evan Cheng // Only do this if the target has a native EXTLOAD instruction from 362ef12057737229452c17983faa20857dba441ef05Evan Cheng // smaller type. 3630329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng TLI.isLoadExtLegal(ISD::EXTLOAD, SVT) && 364aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner TLI.ShouldShrinkFPConstant(OrigVT)) { 36523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *SType = SVT.getTypeForEVT(*DAG.getContext()); 366baf3c404409d5e47b13984a7f95bfbd6d1f2e79eOwen Anderson LLVMC = cast<ConstantFP>(ConstantExpr::getFPTrunc(LLVMC, SType)); 367ef12057737229452c17983faa20857dba441ef05Evan Cheng VT = SVT; 368ef12057737229452c17983faa20857dba441ef05Evan Cheng Extend = true; 369ef12057737229452c17983faa20857dba441ef05Evan Cheng } 370004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng } 371004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 372475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(LLVMC, TLI.getPointerTy()); 3731606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 374ef12057737229452c17983faa20857dba441ef05Evan Cheng if (Extend) 37533c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen return DAG.getExtLoad(ISD::EXTLOAD, dl, 37639355f9fea790c5a1b12ef0fdcfeac3f533232eaDale Johannesen OrigVT, DAG.getEntryNode(), 3773069b8743769527ce7af6cfb6591a2f0fc2faee4Dan Gohman CPIdx, PseudoSourceValue::getConstantPool(), 3781e559443a17d1b335f697551c6263ba60d5dd827David Greene 0, VT, false, false, Alignment); 37933c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen return DAG.getLoad(OrigVT, dl, DAG.getEntryNode(), CPIdx, 3801e559443a17d1b335f697551c6263ba60d5dd827David Greene PseudoSourceValue::getConstantPool(), 0, false, false, 3811e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 382004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng} 383004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 384f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedStore - Expands an unaligned store to 2 half-size stores. 385f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 386475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedStore(StoreSDNode *ST, SelectionDAG &DAG, 3870d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman const TargetLowering &TLI) { 388475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = ST->getChain(); 389475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = ST->getBasePtr(); 390475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Val = ST->getValue(); 391e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Val.getValueType(); 392907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen int Alignment = ST->getAlignment(); 393907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen int SVOffset = ST->getSrcValueOffset(); 394bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = ST->getDebugLoc(); 39583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ST->getMemoryVT().isFloatingPoint() || 39683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands ST->getMemoryVT().isVector()) { 39723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT intVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits()); 39805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 39905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a bitconvert of the value to the integer type of the 40005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // same size, then a (misaligned) int store. 40105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // FIXME: Does not handle truncating floating point stores! 402bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::BIT_CONVERT, dl, intVT, Val); 403bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getStore(Chain, dl, Result, Ptr, ST->getSrcValue(), 4041e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, ST->isVolatile(), ST->isNonTemporal(), 4051e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 40605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } else { 40705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do a (aligned) store to a stack slot, then copy from the stack slot 40805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // to the final destination using (unaligned) integer loads and stores. 409e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT StoredVT = ST->getMemoryVT(); 410e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT RegVT = 411adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng TLI.getRegisterType(*DAG.getContext(), 412adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT::getIntegerVT(*DAG.getContext(), 413adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng StoredVT.getSizeInBits())); 41405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned StoredBytes = StoredVT.getSizeInBits() / 8; 41505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned RegBytes = RegVT.getSizeInBits() / 8; 41605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned NumRegs = (StoredBytes + RegBytes - 1) / RegBytes; 41705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 418fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Make sure the stack slot is also aligned for the register type. 419fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands SDValue StackPtr = DAG.CreateStackTemporary(StoredVT, RegVT); 420fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 421fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Perform the original store, only redirected to the stack slot. 422fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Store = DAG.getTruncStore(Chain, dl, 4231e559443a17d1b335f697551c6263ba60d5dd827David Greene Val, StackPtr, NULL, 0, StoredVT, 4241e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 42505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 42605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SmallVector<SDValue, 8> Stores; 42705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned Offset = 0; 42805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 42905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do all but one copies using the full register width. 43005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands for (unsigned i = 1; i < NumRegs; i++) { 43105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Load one integer register's worth from the stack slot. 4321e559443a17d1b335f697551c6263ba60d5dd827David Greene SDValue Load = DAG.getLoad(RegVT, dl, Store, StackPtr, NULL, 0, 4331e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 43405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Store it to the final location. Remember the store. 435bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, Ptr, 43605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->getSrcValue(), SVOffset + Offset, 4371e559443a17d1b335f697551c6263ba60d5dd827David Greene ST->isVolatile(), ST->isNonTemporal(), 43805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 43905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Increment the pointers. 44005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Offset += RegBytes; 441bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 44205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Increment); 443bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 44405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 44505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 446fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // The last store may be partial. Do a truncating store. On big-endian 447fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // machines this requires an extending load from the stack slot to ensure 448fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // that the bits are in the right place. 449adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 450adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng 8 * (StoredBytes - Offset)); 451fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 452fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Load from the stack slot. 453bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Store, StackPtr, 4541e559443a17d1b335f697551c6263ba60d5dd827David Greene NULL, 0, MemVT, false, false, 0); 45505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 456bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, Ptr, 45705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->getSrcValue(), SVOffset + Offset, 458fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MemVT, ST->isVolatile(), 4591e559443a17d1b335f697551c6263ba60d5dd827David Greene ST->isNonTemporal(), 46005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 46105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The order of the stores doesn't matter - say it with a TokenFactor. 462825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 46305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Stores.size()); 46405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 465907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 46683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(ST->getMemoryVT().isInteger() && 46783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands !ST->getMemoryVT().isVector() && 468907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen "Unaligned store of unknown type."); 469f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Get the half-size VT 470bceddbdc919fc2ca7bc8c3911586ba93367686f0Ken Dyck EVT NewStoredVT = ST->getMemoryVT().getHalfSizedIntegerVT(*DAG.getContext()); 47183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands int NumBits = NewStoredVT.getSizeInBits(); 472f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int IncrementSize = NumBits / 8; 473f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 474f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Divide the stored value in two parts. 475475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 476475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = Val; 477bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Hi = DAG.getNode(ISD::SRL, dl, VT, Val, ShiftAmount); 478f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 479f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Store the two parts 480475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store1, Store2; 481bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store1 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Lo:Hi, Ptr, 482f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->getSrcValue(), SVOffset, NewStoredVT, 4831e559443a17d1b335f697551c6263ba60d5dd827David Greene ST->isVolatile(), ST->isNonTemporal(), Alignment); 484bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 485f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 486dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands Alignment = MinAlign(Alignment, IncrementSize); 487bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store2 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Hi:Lo, Ptr, 488f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->getSrcValue(), SVOffset + IncrementSize, 4891e559443a17d1b335f697551c6263ba60d5dd827David Greene NewStoredVT, ST->isVolatile(), ST->isNonTemporal(), 4901e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 491f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 492825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Store1, Store2); 493f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 494f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 495f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedLoad - Expands an unaligned load to 2 half-size loads. 496f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 497475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedLoad(LoadSDNode *LD, SelectionDAG &DAG, 498e9530ecae4897fe8157bd4d7616043bd8c0484e2Dan Gohman const TargetLowering &TLI) { 499f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int SVOffset = LD->getSrcValueOffset(); 500475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = LD->getChain(); 501475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = LD->getBasePtr(); 502e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = LD->getValueType(0); 503e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT LoadedVT = LD->getMemoryVT(); 504bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = LD->getDebugLoc(); 50583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (VT.isFloatingPoint() || VT.isVector()) { 50623b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT intVT = EVT::getIntegerVT(*DAG.getContext(), LoadedVT.getSizeInBits()); 50705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 50805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a (misaligned) integer load of the same size, 50905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // then bitconvert to floating point or vector. 510bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue newLoad = DAG.getLoad(intVT, dl, Chain, Ptr, LD->getSrcValue(), 51105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset, LD->isVolatile(), 5121e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), LD->getAlignment()); 513bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::BIT_CONVERT, dl, LoadedVT, newLoad); 51405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (VT.isFloatingPoint() && LoadedVT != VT) 515bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, VT, Result); 516907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen 51705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Ops[] = { Result, Chain }; 518bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 51905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } else { 52005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Copy the value to a (aligned) stack slot using (unaligned) integer 52105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // loads and stores, then do a (aligned) load from the stack slot. 52223b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RegVT = TLI.getRegisterType(*DAG.getContext(), intVT); 52305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned LoadedBytes = LoadedVT.getSizeInBits() / 8; 52405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned RegBytes = RegVT.getSizeInBits() / 8; 52505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned NumRegs = (LoadedBytes + RegBytes - 1) / RegBytes; 52605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 527fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Make sure the stack slot is also aligned for the register type. 528fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands SDValue StackBase = DAG.CreateStackTemporary(LoadedVT, RegVT); 529fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 53005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 53105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SmallVector<SDValue, 8> Stores; 53205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue StackPtr = StackBase; 53305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned Offset = 0; 53405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 53505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do all but one copies using the full register width. 53605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands for (unsigned i = 1; i < NumRegs; i++) { 53705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Load one integer register's worth from the original location. 538bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getLoad(RegVT, dl, Chain, Ptr, LD->getSrcValue(), 53905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset + Offset, LD->isVolatile(), 5401e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), 54105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(LD->getAlignment(), Offset)); 54205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 543bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, StackPtr, 5441e559443a17d1b335f697551c6263ba60d5dd827David Greene NULL, 0, false, false, 0)); 54505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Increment the pointers. 54605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Offset += RegBytes; 547bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 548bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 54905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Increment); 55005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 55105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 55205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The last copy may be partial. Do an extending load. 553adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 554adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng 8 * (LoadedBytes - Offset)); 555bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Chain, Ptr, 55605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands LD->getSrcValue(), SVOffset + Offset, 557fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MemVT, LD->isVolatile(), 5581e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), 55905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(LD->getAlignment(), Offset)); 56005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 561fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // On big-endian machines this requires a truncating store to ensure 562fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // that the bits end up in the right place. 563bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, StackPtr, 5641e559443a17d1b335f697551c6263ba60d5dd827David Greene NULL, 0, MemVT, false, false, 0)); 56505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 56605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The order of the stores doesn't matter - say it with a TokenFactor. 567825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 56805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Stores.size()); 56905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 57005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Finally, perform the original load only redirected to the stack slot. 571bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Load = DAG.getExtLoad(LD->getExtensionType(), dl, VT, TF, StackBase, 5721e559443a17d1b335f697551c6263ba60d5dd827David Greene NULL, 0, LoadedVT, false, false, 0); 57305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 57405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Callers expect a MERGE_VALUES node. 57505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Ops[] = { Load, TF }; 576bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 57705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 578907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 57983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(LoadedVT.isInteger() && !LoadedVT.isVector() && 580e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner "Unaligned load of unsupported type."); 581e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner 5828155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // Compute the new VT that is half the size of the old one. This is an 5838155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // integer MVT. 58483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned NumBits = LoadedVT.getSizeInBits(); 585e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewLoadedVT; 58623b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson NewLoadedVT = EVT::getIntegerVT(*DAG.getContext(), NumBits/2); 587e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner NumBits >>= 1; 588fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 589e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned Alignment = LD->getAlignment(); 590e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned IncrementSize = NumBits / 8; 591f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ISD::LoadExtType HiExtType = LD->getExtensionType(); 592f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 593f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If the original load is NON_EXTLOAD, the hi part load must be ZEXTLOAD. 594f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (HiExtType == ISD::NON_EXTLOAD) 595f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio HiExtType = ISD::ZEXTLOAD; 596f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 597f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Load the value in two parts 598475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 599f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (TLI.isLittleEndian()) { 600bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getSrcValue(), 6011e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, NewLoadedVT, LD->isVolatile(), 6021e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), Alignment); 603bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 604f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 605bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getSrcValue(), 606f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset + IncrementSize, NewLoadedVT, LD->isVolatile(), 6071e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), MinAlign(Alignment, IncrementSize)); 608f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 609bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getSrcValue(), 6101e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, NewLoadedVT, LD->isVolatile(), 6111e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), Alignment); 612bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 613f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 614bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getSrcValue(), 615f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset + IncrementSize, NewLoadedVT, LD->isVolatile(), 6161e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isNonTemporal(), MinAlign(Alignment, IncrementSize)); 617f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 618f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 619f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // aggregate the two parts 620475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 621bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::SHL, dl, VT, Hi, ShiftAmount); 622bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::OR, dl, VT, Result, Lo); 623f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 624825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 625f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Hi.getValue(1)); 626f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 627475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Result, TF }; 628bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 629f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 630912095becac923ff614d7b07728eb345ada67765Evan Cheng 6316867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// PerformInsertVectorEltInMemory - Some target cannot handle a variable 6326867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 6336867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// is necessary to spill the vector being inserted into to memory, perform 6346867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// the insert there, and then read the result back. 635475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize:: 636bb5da918545efb54857a09c983a5a7f22a7e04d4Dale JohannesenPerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, SDValue Idx, 637bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl) { 638475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1 = Vec; 639475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp2 = Val; 640475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = Idx; 641fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 6426867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // If the target doesn't support this, we have to spill the input vector 6436867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // to a temporary stack slot, update the element, then reload it. This is 6446867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // badness. We could also load the value into a vector register (either 6456867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // with a "move to register" or "extload into register" instruction, then 6466867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // permute it into place, if the idx is a constant and if the idx is 6476867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // supported by the target. 648e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp1.getValueType(); 649e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 650e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT IdxVT = Tmp3.getValueType(); 651e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PtrVT = TLI.getPointerTy(); 652475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(VT); 6536867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 654ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex(); 655ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 6566867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the vector. 657bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Tmp1, StackPtr, 6581e559443a17d1b335f697551c6263ba60d5dd827David Greene PseudoSourceValue::getFixedStack(SPFI), 0, 6591e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 6606867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 6616867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Truncate or zero extend offset to target pointer type. 6628e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands unsigned CastOpc = IdxVT.bitsGT(PtrVT) ? ISD::TRUNCATE : ISD::ZERO_EXTEND; 663bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(CastOpc, dl, PtrVT, Tmp3); 6646867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Add the offset to the index. 665aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned EltSize = EltVT.getSizeInBits()/8; 666bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(ISD::MUL, dl, IdxVT, Tmp3,DAG.getConstant(EltSize, IdxVT)); 667bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue StackPtr2 = DAG.getNode(ISD::ADD, dl, IdxVT, Tmp3, StackPtr); 6686867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the scalar value. 669bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ch = DAG.getTruncStore(Ch, dl, Tmp2, StackPtr2, 6701e559443a17d1b335f697551c6263ba60d5dd827David Greene PseudoSourceValue::getFixedStack(SPFI), 0, EltVT, 6711e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 6726867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Load the updated vector. 673bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getLoad(VT, dl, Ch, StackPtr, 6741e559443a17d1b335f697551c6263ba60d5dd827David Greene PseudoSourceValue::getFixedStack(SPFI), 0, 6751e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 6766867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman} 6776867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 678e9f1015d1f184a51aaadfd03be0846bd5e7d08a2Mon P Wang 6793f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanSDValue SelectionDAGLegalize:: 6803f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, SDValue Idx, DebugLoc dl) { 6813f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (ConstantSDNode *InsertPos = dyn_cast<ConstantSDNode>(Idx)) { 6823f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // SCALAR_TO_VECTOR requires that the type of the value being inserted 6833f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // match the element type of the vector being created, except for 6843f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // integers in which case the inserted value can be over width. 685e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = Vec.getValueType().getVectorElementType(); 6863f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (Val.getValueType() == EltVT || 6873f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman (EltVT.isInteger() && Val.getValueType().bitsGE(EltVT))) { 6883f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ScVec = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, 6893f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Vec.getValueType(), Val); 6903f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6913f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman unsigned NumElts = Vec.getValueType().getVectorNumElements(); 6923f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // We generate a shuffle of InVec and ScVec, so the shuffle mask 6933f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // should be 0,1,2,3,4,5... with the appropriate element replaced with 6943f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // elt 0 of the RHS. 6953f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SmallVector<int, 8> ShufOps; 6963f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0; i != NumElts; ++i) 6973f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman ShufOps.push_back(i != InsertPos->getZExtValue() ? i : NumElts); 6983f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6993f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return DAG.getVectorShuffle(Vec.getValueType(), dl, Vec, ScVec, 7003f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman &ShufOps[0]); 7013f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 7023f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 7033f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return PerformInsertVectorEltInMemory(Vec, Val, Idx, dl); 7043f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman} 7053f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 7067ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::OptimizeFloatStore(StoreSDNode* ST) { 7077ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Turn 'store float 1.0, Ptr' -> 'store int 0x12345678, Ptr' 7087ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: We shouldn't do this for TargetConstantFP's. 7097ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: move this to the DAG Combiner! Note that we can't regress due 7107ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // to phase ordering between legalized code and the dag combiner. This 7117ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // probably means that we need to integrate dag combiner and legalizer 7127ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // together. 7137ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We generally can't do this one for long doubles. 7147ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp1 = ST->getChain(); 7157ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp2 = ST->getBasePtr(); 7167ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp3; 7177ef3d178660b82d1571757e49f44b004d772a116Eli Friedman int SVOffset = ST->getSrcValueOffset(); 7187ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Alignment = ST->getAlignment(); 7197ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bool isVolatile = ST->isVolatile(); 7201e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = ST->isNonTemporal(); 7217ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = ST->getDebugLoc(); 7227ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(ST->getValue())) { 723825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (CFP->getValueType(0) == MVT::f32 && 724825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson getTypeAction(MVT::i32) == Legal) { 7257ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF(). 7267ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bitcastToAPInt().zextOrTrunc(32), 727825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::i32); 7287ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 7291e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, isVolatile, isNonTemporal, Alignment); 730825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (CFP->getValueType(0) == MVT::f64) { 7317ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // If this target supports 64-bit registers, do a single 64-bit store. 732825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (getTypeAction(MVT::i64) == Legal) { 7337ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF().bitcastToAPInt(). 734825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson zextOrTrunc(64), MVT::i64); 7357ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 7361e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, isVolatile, isNonTemporal, Alignment); 737825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (getTypeAction(MVT::i32) == Legal && !ST->isVolatile()) { 7387ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, if the target supports 32-bit registers, use 2 32-bit 7397ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // stores. If the target supports neither 32- nor 64-bits, this 7407ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // xform is certainly not worth it. 7417ef3d178660b82d1571757e49f44b004d772a116Eli Friedman const APInt &IntVal =CFP->getValueAPF().bitcastToAPInt(); 742825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Lo = DAG.getConstant(APInt(IntVal).trunc(32), MVT::i32); 743825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Hi = DAG.getConstant(IntVal.lshr(32).trunc(32), MVT::i32); 7447ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (TLI.isBigEndian()) std::swap(Lo, Hi); 7457ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 7467ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Lo = DAG.getStore(Tmp1, dl, Lo, Tmp2, ST->getSrcValue(), 7471e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, isVolatile, isNonTemporal, Alignment); 7487ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 7497ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DAG.getIntPtrConstant(4)); 7507ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Hi = DAG.getStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), SVOffset+4, 7511e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, MinAlign(Alignment, 4U)); 7527ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 753825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 7547ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7557ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7567ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7577ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return SDValue(); 7587ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 7597ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 760a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// LegalizeOp - We know that the specified value has a legal type, and 761a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// that its operands are legal. Now ensure that the operation itself 762a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// is legal, recursively ensuring that the operands' operations remain 763a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// legal. 764475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) { 76509ec1b058331aadb29a348091611d23892b5c492Chris Lattner if (Op.getOpcode() == ISD::TargetConstant) // Allow illegal target nodes. 76609ec1b058331aadb29a348091611d23892b5c492Chris Lattner return Op; 767fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 768ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif SDNode *Node = Op.getNode(); 7697d2ad624fa749a6d3edac0d94e9c107989c16304Dale Johannesen DebugLoc dl = Node->getDebugLoc(); 770e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner 7711fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 7721fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman assert(getTypeAction(Node->getValueType(i)) == Legal && 7731fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7741fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman 7751fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 7761fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman assert((isTypeLegal(Node->getOperand(i).getValueType()) || 7771fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman Node->getOperand(i).getOpcode() == ISD::TargetConstant) && 7781fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 78045982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 78145982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 782475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 783e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (I != LegalizedNodes.end()) return I->second; 7843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 785475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 786475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result = Op; 787456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner bool isCustom = false; 788fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 7898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Figure out the correct action; the way to query this varies by opcode 7908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::LegalizeAction Action; 7918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman bool SimpleFinishLegalizing = true; 7923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 7938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_W_CHAIN: 7948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_WO_CHAIN: 7958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_VOID: 7968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAARG: 7978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STACKSAVE: 798825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Action = TLI.getOperationAction(Node->getOpcode(), MVT::Other); 7998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 8018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 8028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 8038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 8048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType()); 8058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: 8078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 808e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT InnerType = cast<VTSDNode>(Node->getOperand(1))->getVT(); 8098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), InnerType); 8108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 8123be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SELECT_CC: 8133be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SETCC: 8143be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::BR_CC: { 8153be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CCOperand = Node->getOpcode() == ISD::SELECT_CC ? 4 : 8163be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getOpcode() == ISD::SETCC ? 2 : 1; 8173be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CompareOperand = Node->getOpcode() == ISD::BR_CC ? 2 : 0; 818e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(CompareOperand).getValueType(); 8193be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman ISD::CondCode CCCode = 8203be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman cast<CondCodeSDNode>(Node->getOperand(CCOperand))->get(); 8213be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getCondCodeAction(CCCode, OpVT); 8223be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Action == TargetLowering::Legal) { 8233be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Node->getOpcode() == ISD::SELECT_CC) 8243be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 8253be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getValueType(0)); 8263be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman else 8273be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), OpVT); 8283be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8293be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 8303be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::LOAD: 8328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STORE: 833ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: Model these properly. LOAD and STORE are complicated, and 834ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // STORE expects the unlegalized operand in some cases. 835ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 836ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_START: 8388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_END: 839ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: This shouldn't be necessary. These nodes have special properties 840ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // dealing with the recursive nature of legalization. Removing this 841ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // special case should be done as part of making LegalizeDAG non-recursive. 842ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 843ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: 8458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 8468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SADDO: 8478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SSUBO: 8488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UADDO: 8498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::USUBO: 8508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SMULO: 8518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UMULO: 8528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FPOWI: 8538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 8548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 8558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 856f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // These operations lie about being legal: when they claim to be legal, 857f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // they should actually be expanded. 8588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Action == TargetLowering::Legal) 8608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Expand; 8618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAMPOLINE: 8638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 8648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 8654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // These operations lie about being legal: when they claim to be legal, 8664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // they should actually be custom-lowered. 8674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8684bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Action == TargetLowering::Legal) 8694bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TargetLowering::Custom; 8708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BUILD_VECTOR: 872b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // A weird case: legalization for BUILD_VECTOR never legalizes the 873b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // operands! 874b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // FIXME: This really sucks... changing it isn't semantically incorrect, 875b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // but it massively pessimizes the code for floating-point BUILD_VECTORs 876b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // because ConstantFP operands get legalized into constant pool loads 877b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // before the BUILD_VECTOR code can see them. It doesn't usually bite, 878b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // though, because BUILD_VECTORS usually get lowered into other nodes 879b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // which get legalized properly. 8808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SimpleFinishLegalizing = false; 881948c1b1cda280c6428dbeaa03a6c2c559dbb93f4Chris Lattner break; 8823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 883d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner if (Node->getOpcode() >= ISD::BUILTIN_OP_END) { 8848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Legal; 8858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 8868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 8888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 890d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner 8918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (SimpleFinishLegalizing) { 8928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVector<SDValue, 8> Ops, ResultVals; 8938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 8948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops.push_back(LegalizeOp(Node->getOperand(i))); 8958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 8968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: break; 8978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR: 8988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRIND: 8998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_JT: 9008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_CC: 9018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRCOND: 9028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Branches tweak the chain to include LastCALLSEQ_END 903825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ops[0] = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Ops[0], 9048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END); 9058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[0] = LegalizeOp(Ops[0]); 9068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 9078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SHL: 9098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRL: 9108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRA: 9118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTL: 9128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTR: 9138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Legalizing shifts/rotates requires adjusting the shift amount 9148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // to the appropriate width. 9158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!Ops[1].getValueType().isVector()) 9168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[1] = LegalizeOp(DAG.getShiftAmountOperand(Ops[1])); 9178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 918db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SRL_PARTS: 919db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SRA_PARTS: 920db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SHL_PARTS: 921db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman // Legalizing shifts/rotates requires adjusting the shift amount 922db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman // to the appropriate width. 923db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman if (!Ops[2].getValueType().isVector()) 924db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman Ops[2] = LegalizeOp(DAG.getShiftAmountOperand(Ops[2])); 9252c9489d6e96d99f77b6c31919805b5e61954deb2Dan Gohman break; 9268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Result = DAG.UpdateNodeOperands(Result.getValue(0), Ops.data(), 9298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops.size()); 9308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Action) { 9318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Legal: 932d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 9338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Result.getValue(i)); 9348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Custom: 9368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FIXME: The handling for custom lowering with multiple results is 9378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // a complete mess. 9388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = TLI.LowerOperation(Result, DAG); 9398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Tmp1.getNode()) { 9408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) { 9418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (e == 1) 9428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1); 9438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 9448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1.getValue(i)); 9458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FALL THROUGH 9508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Expand: 9518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ExpandNode(Result.getNode(), ResultVals); 9528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Promote: 9548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman PromoteNode(Result.getNode(), ResultVals); 9558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!ResultVals.empty()) { 9588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = ResultVals.size(); i != e; ++i) { 9598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (ResultVals[i] != SDValue(Node, i)) 9608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals[i] = LegalizeOp(ResultVals[i]); 9618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman AddLegalizedOperand(SDValue(Node, i), ResultVals[i]); 9628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman return ResultVals[Op.getResNo()]; 964d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner } 9658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 9688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: 969e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#ifndef NDEBUG 970993aacedfdc3f156f667b4efa280ee79eab3b898David Greene dbgs() << "NODE: "; 971993aacedfdc3f156f667b4efa280ee79eab3b898David Greene Node->dump( &DAG); 972993aacedfdc3f156f667b4efa280ee79eab3b898David Greene dbgs() << "\n"; 973e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#endif 97435a389344d21178ee280c2410401b2060b5b879cChris Lattner assert(0 && "Do not know how to legalize this operator!"); 97598ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman 976b2827b0901162169bb2692b77a839c9767849134Chris Lattner case ISD::BUILD_VECTOR: 977b2827b0901162169bb2692b77a839c9767849134Chris Lattner switch (TLI.getOperationAction(ISD::BUILD_VECTOR, Node->getValueType(0))) { 97835a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 9792332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner case TargetLowering::Custom: 9802332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Tmp3 = TLI.LowerOperation(Result, DAG); 981ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()) { 9822332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Result = Tmp3; 9832332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 9842332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 9852332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner // FALLTHROUGH 986ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner case TargetLowering::Expand: 987ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandBUILD_VECTOR(Result.getNode()); 988b2827b0901162169bb2692b77a839c9767849134Chris Lattner break; 9892332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 9902332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 9916831a815999dde4cf801e2076e66b4943964daf2Chris Lattner case ISD::CALLSEQ_START: { 9926831a815999dde4cf801e2076e66b4943964daf2Chris Lattner SDNode *CallEnd = FindCallEndFromCallStart(Node); 993fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 9946831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Recursively Legalize all of the inputs of the call end that do not lead 9956831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // to this call start. This ensures that any libcalls that need be inserted 9966831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // are inserted *before* the CALLSEQ_START. 99700755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner {SmallPtrSet<SDNode*, 32> NodesLeadingTo; 9986831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = CallEnd->getNumOperands(); i != e; ++i) 999ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif LegalizeAllNodesNotLeadingTo(CallEnd->getOperand(i).getNode(), Node, 1000c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo); 1001c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 10026831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 10036831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Now that we legalized all of the inputs (which may have inserted 10046831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // libcalls) create the new CALLSEQ_START node. 10056831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 10066831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 10076831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Merge in the last call, to ensure that this call start after the last 10086831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // call ended. 1009c5d7d7c715f7b7a4eeea1ceaafefc3d1d6df2addChris Lattner if (LastCALLSEQ_END.getOpcode() != ISD::EntryToken) { 1010825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 1011ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp1, LastCALLSEQ_END); 1012b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner Tmp1 = LegalizeOp(Tmp1); 1013b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner } 1014fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10156831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Do not try to legalize the target-specific arguments (#1+). 10166831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Tmp1 != Node->getOperand(0)) { 1017475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 10186831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Ops[0] = Tmp1; 1019f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 10206831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1021fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10226831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Remember that the CALLSEQ_START is legalized. 10234b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(0), Result); 10244b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) // If this has a flag result, remember it. 10254b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 1026fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10276831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Now that the callseq_start and all of the non-call nodes above this call 1028fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // sequence have been legalized, legalize the call itself. During this 10296831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // process, no libcalls can/will be inserted, guaranteeing that no calls 10306831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // can overlap. 10316831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "Inconsistent sequentialization of calls!"); 10326831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Note that we are selecting this call! 1033475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LastCALLSEQ_END = SDValue(CallEnd, 0); 10346831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = true; 1035fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10366831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call, starting from the CALLSEQ_END. 10376831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(LastCALLSEQ_END); 10386831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "CALLSEQ_END should have cleared this!"); 10396831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 10406831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 104116cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner case ISD::CALLSEQ_END: 10426831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the CALLSEQ_START node hasn't been legalized first, legalize it. This 10436831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // will cause this node to be legalized as well as handling libcalls right. 1044ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (LastCALLSEQ_END.getNode() != Node) { 1045475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LegalizeOp(SDValue(FindCallStartFromCallEnd(Node), 0)); 1046475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 10476831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(I != LegalizedNodes.end() && 10486831a815999dde4cf801e2076e66b4943964daf2Chris Lattner "Legalizing the call start should have legalized this node!"); 10496831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return I->second; 10506831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1051fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1052fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, the call start has been legalized and everything is going 10536831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // according to plan. Just legalize ourselves normally here. 10543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 105570814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // Do not try to legalize the target-specific arguments (#1+), except for 105670814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // an optional flag input. 1057825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Node->getOperand(Node->getNumOperands()-1).getValueType() != MVT::Flag){ 105870814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0)) { 1059475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 106070814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 1061f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 106270814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 106370814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } else { 106470814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(Node->getNumOperands()-1)); 106570814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0) || 106670814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 != Node->getOperand(Node->getNumOperands()-1)) { 1067475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 106870814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 106970814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops.back() = Tmp2; 1070f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 107170814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 10726a5428934ba6159c1acc541944332e51a6cfa59aChris Lattner } 10734b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner assert(IsLegalizingCall && "Call sequence imbalance between start/end?"); 10746831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // This finishes up call legalization. 10756831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = false; 1076fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10774b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner // If the CALLSEQ_END node has a flag, remember that we legalized it. 1078475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Result.getValue(0)); 10794b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) 1080475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Result.getValue(1)); 108199a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Result.getValue(Op.getResNo()); 1082f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::LOAD: { 1083466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng LoadSDNode *LD = cast<LoadSDNode>(Node); 1084466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = LegalizeOp(LD->getChain()); // Legalize the chain. 1085466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp2 = LegalizeOp(LD->getBasePtr()); // Legalize the base pointer. 10862d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 1087466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng ISD::LoadExtType ExtType = LD->getExtensionType(); 1088466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng if (ExtType == ISD::NON_EXTLOAD) { 1089e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1090466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, LD->getOffset()); 1091466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = Result.getValue(0); 1092466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = Result.getValue(1); 1093fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1094466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng switch (TLI.getOperationAction(Node->getOpcode(), VT)) { 109535a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 1096f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1097f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned load and the target doesn't support it, 1098f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1099bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) { 1100e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = LD->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1101e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 1102f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (LD->getAlignment() < ABIAlignment){ 1103debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 1104debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson DAG, TLI); 1105f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp3 = Result.getOperand(0); 1106f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp4 = Result.getOperand(1); 1107907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp3 = LegalizeOp(Tmp3); 1108907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp4 = LegalizeOp(Tmp4); 1109f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1110f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1111f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 1112466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Custom: 1113466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = TLI.LowerOperation(Tmp3, DAG); 1114ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) { 1115466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = LegalizeOp(Tmp1); 1116466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1117466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1118466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1119466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Promote: { 1120466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Only promote a load of vector type to another. 112183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Cannot promote this load!"); 1122466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Change base type to a different vector type. 1123e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), VT); 1124466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng 1125ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp1 = DAG.getLoad(NVT, dl, Tmp1, Tmp2, LD->getSrcValue(), 1126d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman LD->getSrcValueOffset(), 11271e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isVolatile(), LD->isNonTemporal(), 11281e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->getAlignment()); 1129b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen Tmp3 = LegalizeOp(DAG.getNode(ISD::BIT_CONVERT, dl, VT, Tmp1)); 113041f6cbbeb21d7d4376b8c0302b9766c3e43be5f2Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1131466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1132f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 1133466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1134fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Since loads produce two values, make sure to remember that we 1135466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // legalized both of them. 1136475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp3); 1137475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp4); 113899a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Op.getResNo() ? Tmp4 : Tmp3; 1139466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } else { 1140e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SrcVT = LD->getMemoryVT(); 114183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SrcWidth = SrcVT.getSizeInBits(); 1142f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands int SVOffset = LD->getSrcValueOffset(); 1143f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned Alignment = LD->getAlignment(); 1144f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands bool isVolatile = LD->isVolatile(); 11451e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = LD->isNonTemporal(); 1146f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 114783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (SrcWidth != SrcVT.getStoreSizeInBits() && 1148f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Some targets pretend to have an i1 loading operation, and actually 1149f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // load an i8. This trick is correct for ZEXTLOAD because the top 7 1150f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // bits are guaranteed to be zero; it helps the optimizers understand 1151f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // that these bits are zero. It is also useful for EXTLOAD, since it 1152f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // tells the optimizers that those bits are undefined. It would be 1153f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // nice to have an effective generic way of getting these benefits... 1154f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Until such a way is found, don't insist on promoting i1 here. 1155825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (SrcVT != MVT::i1 || 1156825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson TLI.getLoadExtAction(ExtType, MVT::i1) == TargetLowering::Promote)) { 1157f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Promote to a byte-sized load if not loading an integral number of 1158f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // bytes. For example, promote EXTLOAD:i20 -> EXTLOAD:i24. 115983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned NewWidth = SrcVT.getStoreSizeInBits(); 116023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = EVT::getIntegerVT(*DAG.getContext(), NewWidth); 1161475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch; 1162f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1163f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // The extra bits are guaranteed to be zero, since we stored them that 1164f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // way. A zext load from NVT thus automatically gives zext from SrcVT. 1165f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1166f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ISD::LoadExtType NewExtType = 1167f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ExtType == ISD::ZEXTLOAD ? ISD::ZEXTLOAD : ISD::EXTLOAD; 1168f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1169ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getExtLoad(NewExtType, dl, Node->getValueType(0), 1170f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1, Tmp2, LD->getSrcValue(), SVOffset, 11711e559443a17d1b335f697551c6263ba60d5dd827David Greene NVT, isVolatile, isNonTemporal, Alignment); 1172f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1173f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Ch = Result.getValue(1); // The chain. 1174f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1175f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (ExtType == ISD::SEXTLOAD) 1176f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Having the top bits zero doesn't help when sign extending. 1177fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 1178ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), 1179f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result, DAG.getValueType(SrcVT)); 1180f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands else if (ExtType == ISD::ZEXTLOAD || NVT == Result.getValueType()) 1181f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // All the top bits are guaranteed to be zero - inform the optimizers. 1182fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::AssertZext, dl, 1183ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), Result, 1184f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getValueType(SrcVT)); 1185f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1186f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); 1187f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Ch); 1188f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else if (SrcWidth & (SrcWidth - 1)) { 1189f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // If not loading a power-of-2 number of bits, expand as two loads. 1190bceddbdc919fc2ca7bc8c3911586ba93367686f0Ken Dyck assert(!SrcVT.isVector() && "Unsupported extload!"); 1191f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned RoundWidth = 1 << Log2_32(SrcWidth); 1192f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(RoundWidth < SrcWidth); 1193f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned ExtraWidth = SrcWidth - RoundWidth; 1194f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(ExtraWidth < RoundWidth); 1195f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 1196f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands "Load size not an integral number of bytes!"); 119723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 119823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 1199475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi, Ch; 1200f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned IncrementSize; 1201f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1202f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (TLI.isLittleEndian()) { 1203f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // EXTLOAD:i24 -> ZEXTLOAD:i16 | (shl EXTLOAD@+2:i8, 16) 1204f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the bottom RoundWidth bits. 1205ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, 1206ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Tmp1, Tmp2, 1207f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset, RoundVT, isVolatile, 12081e559443a17d1b335f697551c6263ba60d5dd827David Greene isNonTemporal, Alignment); 1209f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1210f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the remaining ExtraWidth bits. 1211f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands IncrementSize = RoundWidth / 8; 1212ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 1213f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getIntPtrConstant(IncrementSize)); 1214ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2, 1215f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset + IncrementSize, 12161e559443a17d1b335f697551c6263ba60d5dd827David Greene ExtraVT, isVolatile, isNonTemporal, 1217f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands MinAlign(Alignment, IncrementSize)); 1218f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1219f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Build a factor node to remember that this load is independent of the 1220f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // other one. 1221825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 1222f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Hi.getValue(1)); 1223f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1224f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Move the top bits to the right place. 1225ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 1226f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getConstant(RoundWidth, TLI.getShiftAmountTy())); 1227f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1228f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Join the hi and lo parts. 1229ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 1230f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 1231f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Big endian - avoid unaligned loads. 1232f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // EXTLOAD:i24 -> (shl EXTLOAD:i16, 8) | ZEXTLOAD@+2:i8 1233f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the top RoundWidth bits. 1234ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2, 1235f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset, RoundVT, isVolatile, 12361e559443a17d1b335f697551c6263ba60d5dd827David Greene isNonTemporal, Alignment); 1237f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1238f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the remaining ExtraWidth bits. 1239f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands IncrementSize = RoundWidth / 8; 1240ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 1241f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getIntPtrConstant(IncrementSize)); 1242fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, 1243ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Tmp1, Tmp2, 1244f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset + IncrementSize, 12451e559443a17d1b335f697551c6263ba60d5dd827David Greene ExtraVT, isVolatile, isNonTemporal, 1246f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands MinAlign(Alignment, IncrementSize)); 1247f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1248f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Build a factor node to remember that this load is independent of the 1249f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // other one. 1250825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 1251f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Hi.getValue(1)); 1252f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1253f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Move the top bits to the right place. 1254ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 1255f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy())); 1256f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1257f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Join the hi and lo parts. 1258ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 1259f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1260f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1261f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); 1262f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Ch); 1263f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else { 12640329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng switch (TLI.getLoadExtAction(ExtType, SrcVT)) { 126535a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 1266f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Custom: 1267f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands isCustom = true; 1268f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // FALLTHROUGH 1269f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Legal: 1270f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, LD->getOffset()); 1271f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = Result.getValue(0); 1272f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = Result.getValue(1); 1273f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1274f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (isCustom) { 1275f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp3 = TLI.LowerOperation(Result, DAG); 1276ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()) { 1277f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Tmp3); 1278f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Tmp3.getValue(1)); 1279f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1280f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else { 1281f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // If this is an unaligned load and the target doesn't support it, 1282f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // expand it. 1283bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) { 1284e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = LD->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1285e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 1286f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (LD->getAlignment() < ABIAlignment){ 1287debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 1288debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson DAG, TLI); 1289f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = Result.getOperand(0); 1290f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = Result.getOperand(1); 1291f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Tmp1); 1292f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Tmp2); 1293f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1294f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1295f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1296f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 1297f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Expand: 1298f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // f64 = EXTLOAD f32 should expand to LOAD, FP_EXTEND 129962c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov // f128 = EXTLOAD {f32,f64} too 130062c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov if ((SrcVT == MVT::f32 && (Node->getValueType(0) == MVT::f64 || 130162c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov Node->getValueType(0) == MVT::f128)) || 130262c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov (SrcVT == MVT::f64 && Node->getValueType(0) == MVT::f128)) { 1303ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen SDValue Load = DAG.getLoad(SrcVT, dl, Tmp1, Tmp2, LD->getSrcValue(), 130462c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov LD->getSrcValueOffset(), 13051e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isVolatile(), LD->isNonTemporal(), 13061e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->getAlignment()); 1307fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::FP_EXTEND, dl, 1308ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Load); 1309f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); // Relegalize new nodes. 1310f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Load.getValue(1)); 1311f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 1312f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1313f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(ExtType != ISD::EXTLOAD &&"EXTLOAD should always be supported!"); 1314f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Turn the unsupported load into an EXTLOAD followed by an explicit 1315f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // zero/sign extend inreg. 1316ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getExtLoad(ISD::EXTLOAD, dl, Node->getValueType(0), 1317f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1, Tmp2, LD->getSrcValue(), 1318f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValueOffset(), SrcVT, 13191e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->isVolatile(), LD->isNonTemporal(), 13201e559443a17d1b335f697551c6263ba60d5dd827David Greene LD->getAlignment()); 1321475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ValRes; 1322f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (ExtType == ISD::SEXTLOAD) 1323ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen ValRes = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 1324ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), 1325f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result, DAG.getValueType(SrcVT)); 1326f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands else 1327ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen ValRes = DAG.getZeroExtendInReg(Result, dl, SrcVT); 1328f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(ValRes); // Relegalize new nodes. 1329f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Result.getValue(1)); // Relegalize new nodes. 1330466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1331466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 13329d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth } 1333f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1334466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Since loads produce two values, make sure to remember that we legalized 1335466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // both of them. 1336475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp1); 1337475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp2); 133899a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Op.getResNo() ? Tmp2 : Tmp1; 133901ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 134001ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 1341f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::STORE: { 13428b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng StoreSDNode *ST = cast<StoreSDNode>(Node); 13438b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = LegalizeOp(ST->getChain()); // Legalize the chain. 13448b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp2 = LegalizeOp(ST->getBasePtr()); // Legalize the pointer. 1345d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman int SVOffset = ST->getSrcValueOffset(); 1346d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman unsigned Alignment = ST->getAlignment(); 1347d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman bool isVolatile = ST->isVolatile(); 13481e559443a17d1b335f697551c6263ba60d5dd827David Greene bool isNonTemporal = ST->isNonTemporal(); 13498b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 13508b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng if (!ST->isTruncatingStore()) { 13517ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (SDNode *OptStore = OptimizeFloatStore(ST).getNode()) { 13527ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Result = SDValue(OptStore, 0); 13537ef3d178660b82d1571757e49f44b004d772a116Eli Friedman break; 1354d93d46ee7e0a0e539d42139b85c71b2b8c3968feChris Lattner } 1355fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1356957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman { 13578b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp3 = LegalizeOp(ST->getValue()); 1358fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2, 13598b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng ST->getOffset()); 13608b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 1361e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp3.getValueType(); 13628b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng switch (TLI.getOperationAction(ISD::STORE, VT)) { 136335a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 1364f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1365f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned store and the target doesn't support it, 1366f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1367bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) { 1368e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1369e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 1370f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (ST->getAlignment() < ABIAlignment) 1371e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), 1372e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng DAG, TLI); 1373f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1374f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 13758b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Custom: 13768b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = TLI.LowerOperation(Result, DAG); 1377ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) Result = Tmp1; 13788b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 13798b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Promote: 138083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Unknown legal promote case!"); 1381fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Tmp3 = DAG.getNode(ISD::BIT_CONVERT, dl, 13828b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng TLI.getTypeToPromoteTo(ISD::STORE, VT), Tmp3); 1383ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, 1384d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman ST->getSrcValue(), SVOffset, isVolatile, 13851e559443a17d1b335f697551c6263ba60d5dd827David Greene isNonTemporal, Alignment); 13868b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 13878b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 13882efce0a589e2a688a1a06b5dc2ed0db32ae79924Chris Lattner break; 1389f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 13908b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } else { 1391957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman Tmp3 = LegalizeOp(ST->getValue()); 13927e857201f387d004571e6058e2ea709163500f38Duncan Sands 1393e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT StVT = ST->getMemoryVT(); 139483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned StWidth = StVT.getSizeInBits(); 13957e857201f387d004571e6058e2ea709163500f38Duncan Sands 139683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (StWidth != StVT.getStoreSizeInBits()) { 13977e857201f387d004571e6058e2ea709163500f38Duncan Sands // Promote to a byte-sized store with upper bits zero if not 13987e857201f387d004571e6058e2ea709163500f38Duncan Sands // storing an integral number of bytes. For example, promote 13997e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i1 X -> TRUNCSTORE:i8 (and X, 1) 1400adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng EVT NVT = EVT::getIntegerVT(*DAG.getContext(), 1401adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng StVT.getStoreSizeInBits()); 1402ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getZeroExtendInReg(Tmp3, dl, StVT); 1403ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14041e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, NVT, isVolatile, isNonTemporal, 14051e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 14067e857201f387d004571e6058e2ea709163500f38Duncan Sands } else if (StWidth & (StWidth - 1)) { 14077e857201f387d004571e6058e2ea709163500f38Duncan Sands // If not storing a power-of-2 number of bits, expand as two stores. 1408bceddbdc919fc2ca7bc8c3911586ba93367686f0Ken Dyck assert(!StVT.isVector() && "Unsupported truncstore!"); 14097e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned RoundWidth = 1 << Log2_32(StWidth); 14107e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(RoundWidth < StWidth); 14117e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned ExtraWidth = StWidth - RoundWidth; 14127e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(ExtraWidth < RoundWidth); 14137e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 14147e857201f387d004571e6058e2ea709163500f38Duncan Sands "Store size not an integral number of bytes!"); 141523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 141623b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 1417475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 14187e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned IncrementSize; 14197e857201f387d004571e6058e2ea709163500f38Duncan Sands 14207e857201f387d004571e6058e2ea709163500f38Duncan Sands if (TLI.isLittleEndian()) { 14217e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 X, TRUNCSTORE@+2:i8 (srl X, 16) 14227e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the bottom RoundWidth bits. 1423ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14247e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset, RoundVT, 14251e559443a17d1b335f697551c6263ba60d5dd827David Greene isVolatile, isNonTemporal, Alignment); 14267e857201f387d004571e6058e2ea709163500f38Duncan Sands 14277e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14287e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1429ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14307e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1431ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 14327e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(RoundWidth, TLI.getShiftAmountTy())); 1433ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), 14347e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset + IncrementSize, ExtraVT, isVolatile, 14351e559443a17d1b335f697551c6263ba60d5dd827David Greene isNonTemporal, 14367e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 14377e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 14387e857201f387d004571e6058e2ea709163500f38Duncan Sands // Big endian - avoid unaligned stores. 14397e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 (srl X, 8), TRUNCSTORE@+2:i8 X 14407e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the top RoundWidth bits. 1441ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 14427e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy())); 1443ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), 14441e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, RoundVT, isVolatile, isNonTemporal, 14451e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 14467e857201f387d004571e6058e2ea709163500f38Duncan Sands 14477e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14487e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1449ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14507e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1451ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14527e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset + IncrementSize, ExtraVT, isVolatile, 14531e559443a17d1b335f697551c6263ba60d5dd827David Greene isNonTemporal, 14547e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 14557e857201f387d004571e6058e2ea709163500f38Duncan Sands } 1456c7029805ef35ce9805931067b841e6af11db382eChris Lattner 14577e857201f387d004571e6058e2ea709163500f38Duncan Sands // The order of the stores doesn't matter. 1458825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Result = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 14597e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 14607e857201f387d004571e6058e2ea709163500f38Duncan Sands if (Tmp1 != ST->getChain() || Tmp3 != ST->getValue() || 14617e857201f387d004571e6058e2ea709163500f38Duncan Sands Tmp2 != ST->getBasePtr()) 14627e857201f387d004571e6058e2ea709163500f38Duncan Sands Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2, 14637e857201f387d004571e6058e2ea709163500f38Duncan Sands ST->getOffset()); 14647e857201f387d004571e6058e2ea709163500f38Duncan Sands 14657e857201f387d004571e6058e2ea709163500f38Duncan Sands switch (TLI.getTruncStoreAction(ST->getValue().getValueType(), StVT)) { 146635a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "This action is not supported yet!"); 14677e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Legal: 14687e857201f387d004571e6058e2ea709163500f38Duncan Sands // If this is an unaligned store and the target doesn't support it, 14697e857201f387d004571e6058e2ea709163500f38Duncan Sands // expand it. 1470bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) { 1471e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1472e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 14737e857201f387d004571e6058e2ea709163500f38Duncan Sands if (ST->getAlignment() < ABIAlignment) 1474e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), 1475e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng DAG, TLI); 14767e857201f387d004571e6058e2ea709163500f38Duncan Sands } 14777e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 14787e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Custom: 14797e857201f387d004571e6058e2ea709163500f38Duncan Sands Result = TLI.LowerOperation(Result, DAG); 14807e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 14817e857201f387d004571e6058e2ea709163500f38Duncan Sands case Expand: 14827e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i16 i32 -> STORE i16 14837e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(isTypeLegal(StVT) && "Do not know how to expand this store!"); 1484ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getNode(ISD::TRUNCATE, dl, StVT, Tmp3); 1485ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14861e559443a17d1b335f697551c6263ba60d5dd827David Greene SVOffset, isVolatile, isNonTemporal, 14871e559443a17d1b335f697551c6263ba60d5dd827David Greene Alignment); 14887e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 1489f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 14908b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 14913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 14923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 1493f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 149445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 14954ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner assert(Result.getValueType() == Op.getValueType() && 14964ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner "Bad legalization!"); 1497fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1498456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner // Make sure that the generated code is itself legal. 1499456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner if (Result != Op) 1500456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner Result = LegalizeOp(Result); 15013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 150245982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 150345982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 150445982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner AddLegalizedOperand(Op, Result); 15053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return Result; 15063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 15073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 15083d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli FriedmanSDValue SelectionDAGLegalize::ExpandExtractFromVectorThroughStack(SDValue Op) { 15093d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Vec = Op.getOperand(0); 15103d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Idx = Op.getOperand(1); 15113d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DebugLoc dl = Op.getDebugLoc(); 15123d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Store the value to a temporary stack slot, then LOAD the returned part. 15133d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue StackPtr = DAG.CreateStackTemporary(Vec.getValueType()); 15141e559443a17d1b335f697551c6263ba60d5dd827David Greene SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Vec, StackPtr, NULL, 0, 15151e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 15163d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15173d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Add the offset to the index. 1518aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned EltSize = 1519aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman Vec.getValueType().getVectorElementType().getSizeInBits()/8; 15203d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::MUL, dl, Idx.getValueType(), Idx, 15213d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DAG.getConstant(EltSize, Idx.getValueType())); 15223d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15233d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman if (Idx.getValueType().bitsGT(TLI.getPointerTy())) 15243d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::TRUNCATE, dl, TLI.getPointerTy(), Idx); 15253d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman else 15263d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::ZERO_EXTEND, dl, TLI.getPointerTy(), Idx); 15273d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15283d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman StackPtr = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, StackPtr); 15293d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 1530c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman if (Op.getValueType().isVector()) 15311e559443a17d1b335f697551c6263ba60d5dd827David Greene return DAG.getLoad(Op.getValueType(), dl, Ch, StackPtr, NULL, 0, 15321e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 1533c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman else 1534c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman return DAG.getExtLoad(ISD::EXTLOAD, dl, Op.getValueType(), Ch, StackPtr, 15351e559443a17d1b335f697551c6263ba60d5dd827David Greene NULL, 0, Vec.getValueType().getVectorElementType(), 15361e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 15373d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman} 15383d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15397ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::ExpandVectorBuildThroughStack(SDNode* Node) { 15407ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We can't handle this case efficiently. Allocate a sufficiently 15417ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // aligned object on the stack, store each element into it, then load 15427ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // the result as a vector. 15437ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Create the stack frame object. 1544e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 15455b8bce11d60694a651965cf019b9cb5d84ed3b90Dale Johannesen EVT EltVT = VT.getVectorElementType(); 15467ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15477ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue FIPtr = DAG.CreateStackTemporary(VT); 1548ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int FI = cast<FrameIndexSDNode>(FIPtr.getNode())->getIndex(); 1549ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng const Value *SV = PseudoSourceValue::getFixedStack(FI); 15507ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15517ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Emit a store of each element to the stack slot. 15527ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SmallVector<SDValue, 8> Stores; 1553aa9d854b334cab2f29ca6d95413a0946b8a38429Dan Gohman unsigned TypeByteSize = EltVT.getSizeInBits() / 8; 15547ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Store (in the right endianness) the elements to memory. 15557ef3d178660b82d1571757e49f44b004d772a116Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 15567ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Ignore undef elements. 15577ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (Node->getOperand(i).getOpcode() == ISD::UNDEF) continue; 15587ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15597ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Offset = TypeByteSize*i; 15607ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15617ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Idx = DAG.getConstant(Offset, FIPtr.getValueType()); 15627ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Idx = DAG.getNode(ISD::ADD, dl, FIPtr.getValueType(), FIPtr, Idx); 15637ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15649949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman // If the destination vector element type is narrower than the source 15659949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman // element type, only store the bits necessary. 15669949dd612c8100f7ea7e6daaa56e465f106dd0bdDan Gohman if (EltVT.bitsLT(Node->getOperand(i).getValueType().getScalarType())) { 15675b8bce11d60694a651965cf019b9cb5d84ed3b90Dale Johannesen Stores.push_back(DAG.getTruncStore(DAG.getEntryNode(), dl, 15681e559443a17d1b335f697551c6263ba60d5dd827David Greene Node->getOperand(i), Idx, SV, Offset, 15691e559443a17d1b335f697551c6263ba60d5dd827David Greene EltVT, false, false, 0)); 1570eb38ebf15c326a5bb45ca9da6329cdf19ad6df95Mon P Wang } else 15715b8bce11d60694a651965cf019b9cb5d84ed3b90Dale Johannesen Stores.push_back(DAG.getStore(DAG.getEntryNode(), dl, 15721e559443a17d1b335f697551c6263ba60d5dd827David Greene Node->getOperand(i), Idx, SV, Offset, 15731e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0)); 15747ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 15757ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15767ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue StoreChain; 15777ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (!Stores.empty()) // Not all undef elements? 1578825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson StoreChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 15797ef3d178660b82d1571757e49f44b004d772a116Eli Friedman &Stores[0], Stores.size()); 15807ef3d178660b82d1571757e49f44b004d772a116Eli Friedman else 15817ef3d178660b82d1571757e49f44b004d772a116Eli Friedman StoreChain = DAG.getEntryNode(); 15827ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15837ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Result is a load from the stack slot. 15841e559443a17d1b335f697551c6263ba60d5dd827David Greene return DAG.getLoad(VT, dl, StoreChain, FIPtr, SV, 0, false, false, 0); 15857ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 15867ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15874bc8c718218159fe410462f6e3670e7cb76c0c04Eli FriedmanSDValue SelectionDAGLegalize::ExpandFCOPYSIGN(SDNode* Node) { 15884bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15894bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = Node->getOperand(0); 15904bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = Node->getOperand(1); 15915d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands 15925d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Get the sign bit of the RHS. First obtain a value that has the same 15935d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // sign as the sign bit, i.e. negative if and only if the sign bit is 1. 15944bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignBit; 15955d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands EVT FloatVT = Tmp2.getValueType(); 15965d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands EVT IVT = EVT::getIntegerVT(*DAG.getContext(), FloatVT.getSizeInBits()); 15974bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (isTypeLegal(IVT)) { 15985d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Convert to an integer with the same sign bit. 15994bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = DAG.getNode(ISD::BIT_CONVERT, dl, IVT, Tmp2); 16004bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else { 16015d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Store the float to memory, then load the sign part out as an integer. 16025d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands MVT LoadTy = TLI.getPointerTy(); 16035d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // First create a temporary that is aligned for both the load and store. 16045d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SDValue StackPtr = DAG.CreateStackTemporary(FloatVT, LoadTy); 16055d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Then store the float to it. 16064bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Ch = 16075d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands DAG.getStore(DAG.getEntryNode(), dl, Tmp2, StackPtr, NULL, 0, 16081e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 16095d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands if (TLI.isBigEndian()) { 16105d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands assert(FloatVT.isByteSized() && "Unsupported floating point type!"); 16115d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Load out a legal integer with the same sign bit as the float. 16125d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SignBit = DAG.getLoad(LoadTy, dl, Ch, StackPtr, NULL, 0, false, false, 0); 16135d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands } else { // Little endian 16145d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SDValue LoadPtr = StackPtr; 16155d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // The float may be wider than the integer we are going to load. Advance 16165d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // the pointer so that the loaded integer will contain the sign bit. 16175d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands unsigned Strides = (FloatVT.getSizeInBits()-1)/LoadTy.getSizeInBits(); 16185d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands unsigned ByteOffset = (Strides * LoadTy.getSizeInBits()) / 8; 16195d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands LoadPtr = DAG.getNode(ISD::ADD, dl, LoadPtr.getValueType(), 16205d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands LoadPtr, DAG.getIntPtrConstant(ByteOffset)); 16215d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Load a legal integer containing the sign bit. 16225d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SignBit = DAG.getLoad(LoadTy, dl, Ch, LoadPtr, NULL, 0, false, false, 0); 16235d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Move the sign bit to the top bit of the loaded integer. 16245d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands unsigned BitShift = LoadTy.getSizeInBits() - 16255d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands (FloatVT.getSizeInBits() - 8 * ByteOffset); 16265d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands assert(BitShift < LoadTy.getSizeInBits() && "Pointer advanced wrong?"); 16275d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands if (BitShift) 16285d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SignBit = DAG.getNode(ISD::SHL, dl, LoadTy, SignBit, 16295d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands DAG.getConstant(BitShift,TLI.getShiftAmountTy())); 16305d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands } 16314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16325d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands // Now get the sign bit proper, by seeing whether the value is negative. 16335d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SignBit = DAG.getSetCC(dl, TLI.getSetCCResultType(SignBit.getValueType()), 16345d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands SignBit, DAG.getConstant(0, SignBit.getValueType()), 16355d54b4112d7b8bcd49a07e398ebff263fac1eb9cDuncan Sands ISD::SETLT); 16364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Get the absolute value of the result. 16374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue AbsVal = DAG.getNode(ISD::FABS, dl, Tmp1.getValueType(), Tmp1); 16384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Select between the nabs and abs value based on the sign bit of 16394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // the input. 16404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getNode(ISD::SELECT, dl, AbsVal.getValueType(), SignBit, 16414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getNode(ISD::FNEG, dl, AbsVal.getValueType(), AbsVal), 16424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman AbsVal); 16434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16444bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedmanvoid SelectionDAGLegalize::ExpandDYNAMIC_STACKALLOC(SDNode* Node, 16464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results) { 16474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned SPReg = TLI.getStackPointerRegisterToSaveRestore(); 16484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert(SPReg && "Target cannot require DYNAMIC_STACKALLOC expansion and" 16494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman " not tell us which reg is the stack pointer!"); 16504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 1651e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 16524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = SDValue(Node, 0); 16534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = SDValue(Node, 1); 16544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp3 = Node->getOperand(2); 16554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Tmp1.getOperand(0); 16564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Chain the dynamic stack allocation so that it doesn't modify the stack 16584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // pointer when other instructions are using the stack. 16594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(0, true)); 16604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Size = Tmp2.getOperand(1); 16624bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SP = DAG.getCopyFromReg(Chain, dl, SPReg, VT); 16634bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = SP.getValue(1); 16644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Align = cast<ConstantSDNode>(Tmp3)->getZExtValue(); 166555e59c186303ff02c0be7429da3b1b36c347f164Dan Gohman unsigned StackAlign = TM.getFrameInfo()->getStackAlignment(); 16664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Align > StackAlign) 16674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SP = DAG.getNode(ISD::AND, dl, VT, SP, 16684bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getConstant(-(uint64_t)Align, VT)); 16694bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, SP, Size); // Value 16704bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCopyToReg(Chain, dl, SPReg, Tmp1); // Output chain 16714bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp2 = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(0, true), 16734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getIntPtrConstant(0, true), SDValue()); 16744bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 16764bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp2); 16774bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16784bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16797f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// LegalizeSetCCCondCode - Legalize a SETCC with given LHS and RHS and 1680f77fc92b03efe455008474894d217282e2a03cadDan Gohman/// condition code CC on the current target. This routine expands SETCC with 16817f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// illegal condition code into AND / OR of multiple SETCC values. 1682e50ed30282bb5b4a9ed952580523f2dda16215acOwen Andersonvoid SelectionDAGLegalize::LegalizeSetCCCondCode(EVT VT, 16837f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng SDValue &LHS, SDValue &RHS, 1684bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue &CC, 1685775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DebugLoc dl) { 1686e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = LHS.getValueType(); 16877f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CCCode = cast<CondCodeSDNode>(CC)->get(); 16887f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (TLI.getCondCodeAction(CCCode, OpVT)) { 168935a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unknown condition code action!"); 16907f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Legal: 16917f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // Nothing to do. 16927f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 16937f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Expand: { 16947f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CC1 = ISD::SETCC_INVALID, CC2 = ISD::SETCC_INVALID; 16957f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng unsigned Opc = 0; 16967f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (CCCode) { 169735a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Don't know how to expand this condition!"); 1698e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETO; Opc = ISD::AND; break; 1699e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGT: CC1 = ISD::SETGT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1700e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGE: CC1 = ISD::SETGE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1701e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLT: CC1 = ISD::SETLT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1702e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLE: CC1 = ISD::SETLE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1703e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETONE: CC1 = ISD::SETNE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1704e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1705e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGT: CC1 = ISD::SETGT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1706e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGE: CC1 = ISD::SETGE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1707e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULT: CC1 = ISD::SETLT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1708e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULE: CC1 = ISD::SETLE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1709e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUNE: CC1 = ISD::SETNE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 17107f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // FIXME: Implement more expansions. 17117f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17127f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 1713bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC1 = DAG.getSetCC(dl, VT, LHS, RHS, CC1); 1714bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC2 = DAG.getSetCC(dl, VT, LHS, RHS, CC2); 1715bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen LHS = DAG.getNode(Opc, dl, VT, SetCC1, SetCC2); 17167f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng RHS = SDValue(); 17177f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng CC = SDValue(); 17187f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 17197f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17207f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17217f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng} 17227f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 17231401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// EmitStackConvert - Emit a store/load combination to the stack. This stores 17241401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// SrcOp to a stack slot of type SlotVT, truncating it if needed. It then does 17251401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// a load from the stack slot to DestVT, extending it if needed. 17261401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// The resultant code need not be legal. 1727475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::EmitStackConvert(SDValue SrcOp, 1728e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SlotVT, 1729e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 17308a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 173135481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Create the stack frame object. 1732ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson unsigned SrcAlign = 1733ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getTargetData()->getPrefTypeAlignment(SrcOp.getValueType(). 173423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson getTypeForEVT(*DAG.getContext())); 1735475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FIPtr = DAG.CreateStackTemporary(SlotVT, SrcAlign); 1736fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1737ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(FIPtr); 1738ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = StackPtrFI->getIndex(); 1739ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng const Value *SV = PseudoSourceValue::getFixedStack(SPFI); 1740ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 174183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SrcSize = SrcOp.getValueType().getSizeInBits(); 174283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SlotSize = SlotVT.getSizeInBits(); 174383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned DestSize = DestVT.getSizeInBits(); 1744adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng const Type *DestType = DestVT.getTypeForEVT(*DAG.getContext()); 1745adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng unsigned DestAlign = TLI.getTargetData()->getPrefTypeAlignment(DestType); 1746fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17471401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // Emit a store to the stack slot. Use a truncstore if the input value is 17481401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // later than DestVT. 1749475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store; 1750ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 17511401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SrcSize > SlotSize) 17528a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getTruncStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 17531e559443a17d1b335f697551c6263ba60d5dd827David Greene SV, 0, SlotVT, false, false, SrcAlign); 17541401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner else { 17551401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SrcSize == SlotSize && "Invalid store"); 17568a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 17571e559443a17d1b335f697551c6263ba60d5dd827David Greene SV, 0, false, false, SrcAlign); 17581401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner } 1759fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 176035481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Result is a load from the stack slot. 17611401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SlotSize == DestSize) 17621e559443a17d1b335f697551c6263ba60d5dd827David Greene return DAG.getLoad(DestVT, dl, Store, FIPtr, SV, 0, false, false, 17631e559443a17d1b335f697551c6263ba60d5dd827David Greene DestAlign); 1764fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17651401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SlotSize < DestSize && "Unknown extension!"); 17668a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, Store, FIPtr, SV, 0, SlotVT, 17671e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, DestAlign); 176835481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner} 176935481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner 1770475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandSCALAR_TO_VECTOR(SDNode *Node) { 17718a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl = Node->getDebugLoc(); 17724352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // Create a vector sized/aligned stack slot, store the value to element #0, 17734352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // then load the whole vector back out. 1774475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(Node->getValueType(0)); 177569de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 1776ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(StackPtr); 1777ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = StackPtrFI->getIndex(); 1778ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 1779b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands SDValue Ch = DAG.getTruncStore(DAG.getEntryNode(), dl, Node->getOperand(0), 1780b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands StackPtr, 1781ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng PseudoSourceValue::getFixedStack(SPFI), 0, 17821e559443a17d1b335f697551c6263ba60d5dd827David Greene Node->getValueType(0).getVectorElementType(), 17831e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 17848a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(Node->getValueType(0), dl, Ch, StackPtr, 17851e559443a17d1b335f697551c6263ba60d5dd827David Greene PseudoSourceValue::getFixedStack(SPFI), 0, 17861e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 17874352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 17884352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 17894352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 1790ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner/// ExpandBUILD_VECTOR - Expand a BUILD_VECTOR node on targets that don't 179107a96765daedf180a7102d39fe56c499878312b7Dan Gohman/// support the operation, but do support the resultant vector type. 1792475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandBUILD_VECTOR(SDNode *Node) { 179326cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson unsigned NumElems = Node->getNumOperands(); 17947a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Value1, Value2; 179526cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson DebugLoc dl = Node->getDebugLoc(); 1796e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1797e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(0).getValueType(); 1798e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 1799fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1800fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // If the only non-undef value is the low element, turn this into a 180187100e0b83b808757bf44dabecd1d1048255d1adChris Lattner // SCALAR_TO_VECTOR node. If this is { X, X, X, X }, determine X. 1802ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner bool isOnlyLowElement = true; 18037a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman bool MoreThanTwoValues = false; 18042eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner bool isConstant = true; 18057a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 1806475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue V = Node->getOperand(i); 18077a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 18087a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 18097a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (i > 0) 1810ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner isOnlyLowElement = false; 18117a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!isa<ConstantFPSDNode>(V) && !isa<ConstantSDNode>(V)) 18122eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner isConstant = false; 18137a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 18147a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) { 18157a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value1 = V; 18167a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (!Value2.getNode()) { 18177a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V != Value1) 18187a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value2 = V; 18197a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (V != Value1 && V != Value2) { 18207a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman MoreThanTwoValues = true; 18217a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 1822ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1823fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18247a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) 18257a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getUNDEF(VT); 18267a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 18277a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (isOnlyLowElement) 182826cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson return DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Node->getOperand(0)); 1829fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18302eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // If all elements are constants, create a load from the constant pool. 1831ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner if (isConstant) { 1832ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner std::vector<Constant*> CV; 1833033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng for (unsigned i = 0, e = NumElems; i != e; ++i) { 1834fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel if (ConstantFPSDNode *V = 1835ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner dyn_cast<ConstantFPSDNode>(Node->getOperand(i))) { 18364fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman CV.push_back(const_cast<ConstantFP *>(V->getConstantFPValue())); 1837fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel } else if (ConstantSDNode *V = 1838ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson dyn_cast<ConstantSDNode>(Node->getOperand(i))) { 18399a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen if (OpVT==EltVT) 18409a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CV.push_back(const_cast<ConstantInt *>(V->getConstantIntValue())); 18419a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen else { 18429a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // If OpVT and EltVT don't match, EltVT is not legal and the 18439a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // element values have been promoted/truncated earlier. Undo this; 18449a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen // we don't want a v16i8 to become a v16i32 for example. 18459a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen const ConstantInt *CI = V->getConstantIntValue(); 18469a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CV.push_back(ConstantInt::get(EltVT.getTypeForEVT(*DAG.getContext()), 18479a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen CI->getZExtValue())); 18489a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen } 1849ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } else { 1850ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner assert(Node->getOperand(i).getOpcode() == ISD::UNDEF); 18519a645cd9d4c0e7d25e4b8836ed31deb5881c8101Dale Johannesen const Type *OpNTy = EltVT.getTypeForEVT(*DAG.getContext()); 18529e9a0d5fc26878e51a58a8b57900fcbf952c2691Owen Anderson CV.push_back(UndefValue::get(OpNTy)); 1853ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1854ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1855af7ec975870f92245f1f1484ac80a1e2db6a0afaOwen Anderson Constant *CP = ConstantVector::get(CV); 1856475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(CP, TLI.getPointerTy()); 18571606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 18588a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(VT, dl, DAG.getEntryNode(), CPIdx, 185950284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, 18601e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, Alignment); 1861ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1862fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18637a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!MoreThanTwoValues) { 18647a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SmallVector<int, 8> ShuffleVec(NumElems, -1); 18657a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 18667a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue V = Node->getOperand(i); 18677a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 18687a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 18697a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman ShuffleVec[i] = V == Value1 ? 0 : NumElems; 18707a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 18717a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (TLI.isShuffleMaskLegal(ShuffleVec, Node->getValueType(0))) { 18722eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Get the splatted value into the low element of a vector register. 18737a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec1 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value1); 18747a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec2; 18757a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (Value2.getNode()) 18767a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value2); 18777a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman else 18787a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getUNDEF(VT); 1879fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18802eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Return shuffle(LowValVec, undef, <0,0,0,0>) 18817a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getVectorShuffle(VT, dl, Vec1, Vec2, ShuffleVec.data()); 1882033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1883033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1884fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18857ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, we can't handle this case efficiently. 18867ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return ExpandVectorBuildThroughStack(Node); 1887ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner} 1888ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner 188977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// ExpandLibCall - Expand a node into a call to a libcall. If the result value 189077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// does not fit into a register, return the lo part and set the hi part to the 189177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// by-reg argument. If it does fit into a single register, return the result 189277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// and leave the Hi part unset. 1893475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, 189447b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman bool isSigned) { 18956831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "Cannot overlap legalization of calls!"); 1896fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // The input chain to this libcall is the entry node of the function. 18976831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalizing the call will automatically add the previous call to the 18986831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // dependence. 1899475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InChain = DAG.getEntryNode(); 1900fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 190177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 190247857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer TargetLowering::ArgListEntry Entry; 190377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 1904e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ArgVT = Node->getOperand(i).getValueType(); 190523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext()); 1906fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Entry.Node = Node->getOperand(i); Entry.Ty = ArgTy; 1907d0b82b301d700217a716526f9329bb031e0d6578Anton Korobeynikov Entry.isSExt = isSigned; 190800fee65fd21f9615d1a604b8b7d42cd16a3f6b47Duncan Sands Entry.isZExt = !isSigned; 190947857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer Args.push_back(Entry); 191077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 1911056292fd738924f3f7703725d8f630983794b5a5Bill Wendling SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 19120c39719bfc7d0b3e61fbd55e1115184a1d5f6ae7Mon P Wang TLI.getPointerTy()); 1913edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 19140d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Splice the libcall in wherever FindInputOutputChains tells us to. 191523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext()); 1916ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson std::pair<SDValue, SDValue> CallInfo = 191786098bd6a63d2cdf0c9be9ef3151bd2728281fd7Dale Johannesen TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false, 191872977a45a8ad9d9524c9b49399e89fb9a3a676edAnton Korobeynikov 0, TLI.getLibcallCallingConv(LC), false, 191998ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 192046ada19645c981a0b7932487d163f7582074a4d9Bill Wendling Callee, Args, DAG, Node->getDebugLoc()); 19210d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 19226831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call sequence, starting with the chain. This will advance 19236831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // the LastCALLSEQ_END to the legalized version of the CALLSEQ_END node that 19246831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // was added by LowerCallTo (guaranteeing proper serialization of calls). 19256831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(CallInfo.second); 192674807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman return CallInfo.first; 192722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 192822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 1929f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandFPLibCall(SDNode* Node, 1930f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F32, 1931f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, 1932f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F80, 1933f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128) { 1934f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 1935825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 193635a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unexpected request for libcall!"); 1937825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f32: LC = Call_F32; break; 1938825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f64: LC = Call_F64; break; 1939825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f80: LC = Call_F80; break; 1940825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::ppcf128: LC = Call_PPCF128; break; 1941f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 1942f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, false); 1943f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 1944f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 1945f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandIntLibCall(SDNode* Node, bool isSigned, 19468983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I8, 1947f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I16, 1948f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I32, 1949f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I64, 1950f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128) { 1951f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 1952825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 195335a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unexpected request for libcall!"); 19548983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i8: LC = Call_I8; break; 19558983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i16: LC = Call_I16; break; 19568983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i32: LC = Call_I32; break; 19578983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i64: LC = Call_I64; break; 1958825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i128: LC = Call_I128; break; 1959f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 1960f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, isSigned); 1961f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 1962f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 196322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandLegalINT_TO_FP - This function is responsible for legalizing a 196422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// INT_TO_FP operation of the specified operand when the target requests that 196522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we expand it. At this point, we know that the result and operand types are 196622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target. 1967475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLegalINT_TO_FP(bool isSigned, 1968475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0, 1969e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 1970af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 1971825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Op0.getValueType() == MVT::i32) { 197222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // simple 32-bit [signed|unsigned] integer to float/double expansion 1973fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 197423594d4537fb88a963c6d6993af5027eac9bfbacChris Lattner // Get the stack frame index of a 8 byte buffer. 1975825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue StackSlot = DAG.CreateStackTemporary(MVT::f64); 1976fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 197722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // word offset constant for Hi/Lo address computation 1978475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue WordOff = DAG.getConstant(sizeof(int), TLI.getPointerTy()); 197922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // set up Hi and Lo (into buffer) address based on endian 1980475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = StackSlot; 1981fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Lo = DAG.getNode(ISD::ADD, dl, 1982ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getPointerTy(), StackSlot, WordOff); 1983408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner if (TLI.isLittleEndian()) 1984408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner std::swap(Hi, Lo); 1985fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 198622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // if signed map to unsigned space 1987475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0Mapped; 198822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) { 198922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // constant used to invert sign bit (signed to unsigned mapping) 1990825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue SignBit = DAG.getConstant(0x80000000u, MVT::i32); 1991825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Op0Mapped = DAG.getNode(ISD::XOR, dl, MVT::i32, Op0, SignBit); 199222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } else { 199322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Op0Mapped = Op0; 199422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 199522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the lo of the constructed double - based on integer input 1996af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Store1 = DAG.getStore(DAG.getEntryNode(), dl, 19971e559443a17d1b335f697551c6263ba60d5dd827David Greene Op0Mapped, Lo, NULL, 0, 19981e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 199922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // initial hi portion of constructed double 2000825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue InitialHi = DAG.getConstant(0x43300000u, MVT::i32); 200122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the hi of the constructed double - biased exponent 20021e559443a17d1b335f697551c6263ba60d5dd827David Greene SDValue Store2=DAG.getStore(Store1, dl, InitialHi, Hi, NULL, 0, 20031e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 200422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // load the constructed double 20051e559443a17d1b335f697551c6263ba60d5dd827David Greene SDValue Load = DAG.getLoad(MVT::f64, dl, Store2, StackSlot, NULL, 0, 20061e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 200722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // FP constant to bias correct the final result 2008475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Bias = DAG.getConstantFP(isSigned ? 2009ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000080000000ULL) : 2010ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000000000000ULL), 2011825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::f64); 201222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // subtract the bias 2013825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Sub = DAG.getNode(ISD::FSUB, dl, MVT::f64, Load, Bias); 201422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // final result 2015475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result; 201622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // handle final rounding 2017825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (DestVT == MVT::f64) { 201822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // do nothing 201922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Result = Sub; 2020825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsLT(MVT::f64)) { 2021af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_ROUND, dl, DestVT, Sub, 20220bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(0)); 2023825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsGT(MVT::f64)) { 2024af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, DestVT, Sub); 202522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 202622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Result; 202722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 202822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner assert(!isSigned && "Legalize cannot Expand SINT_TO_FP for i64 yet"); 2029a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen // Code below here assumes !isSigned without checking again. 20300fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman 20310fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // Implementation of unsigned i64 to f64 following the algorithm in 20320fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // __floatundidf in compiler_rt. This implementation has the advantage 20330fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // of performing rounding correctly, both in the default rounding mode 20340fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // and in all alternate rounding modes. 20350fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman // TODO: Generalize this for use with other types. 20360fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman if (Op0.getValueType() == MVT::i64 && DestVT == MVT::f64) { 20370fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue TwoP52 = 20380fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstant(UINT64_C(0x4330000000000000), MVT::i64); 20390fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue TwoP84PlusTwoP52 = 20400fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstantFP(BitsToDouble(UINT64_C(0x4530000000100000)), MVT::f64); 20410fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue TwoP84 = 20420fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstant(UINT64_C(0x4530000000000000), MVT::i64); 20430fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman 20440fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue Lo = DAG.getZeroExtendInReg(Op0, dl, MVT::i32); 20450fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue Hi = DAG.getNode(ISD::SRL, dl, MVT::i64, Op0, 20460fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman DAG.getConstant(32, MVT::i64)); 20470fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue LoOr = DAG.getNode(ISD::OR, dl, MVT::i64, Lo, TwoP52); 20480fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue HiOr = DAG.getNode(ISD::OR, dl, MVT::i64, Hi, TwoP84); 20490fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue LoFlt = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::f64, LoOr); 20500fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue HiFlt = DAG.getNode(ISD::BIT_CONVERT, dl, MVT::f64, HiOr); 20510fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman SDValue HiSub = DAG.getNode(ISD::FSUB, dl, MVT::f64, HiFlt, TwoP84PlusTwoP52); 20520fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman return DAG.getNode(ISD::FADD, dl, MVT::f64, LoFlt, HiSub); 20530fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman } 20540fa9d1d9011a98212b66daf27f6a8a3d734ae818Dan Gohman 2055a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen // Implementation of unsigned i64 to f32. This implementation has the 2056a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen // advantage of performing rounding correctly. 2057a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen // TODO: Generalize this for use with other types. 2058a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen if (Op0.getValueType() == MVT::i64 && DestVT == MVT::f32) { 2059a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen EVT SHVT = TLI.getShiftAmountTy(); 2060a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen 2061a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue And = DAG.getNode(ISD::AND, dl, MVT::i64, Op0, 2062a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(UINT64_C(0xfffffffffffff800), MVT::i64)); 2063a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Or = DAG.getNode(ISD::OR, dl, MVT::i64, And, 2064a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(UINT64_C(0x800), MVT::i64)); 2065a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue And2 = DAG.getNode(ISD::AND, dl, MVT::i64, Op0, 2066a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(UINT64_C(0x7ff), MVT::i64)); 2067a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Ne = DAG.getSetCC(dl, TLI.getSetCCResultType(MVT::i64), 2068a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen And2, DAG.getConstant(UINT64_C(0), MVT::i64), ISD::SETNE); 2069a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Sel = DAG.getNode(ISD::SELECT, dl, MVT::i64, Ne, Or, Op0); 2070a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Ge = DAG.getSetCC(dl, TLI.getSetCCResultType(MVT::i64), 2071a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen Op0, DAG.getConstant(UINT64_C(0x0020000000000000), MVT::i64), 2072a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen ISD::SETUGE); 2073a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Sel2 = DAG.getNode(ISD::SELECT, dl, MVT::i64, Ge, Sel, Op0); 2074a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen 2075a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Sh = DAG.getNode(ISD::SRL, dl, MVT::i64, Sel2, 2076a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstant(32, SHVT)); 2077a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Trunc = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Sh); 2078a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fcvt = DAG.getNode(ISD::UINT_TO_FP, dl, MVT::f64, Trunc); 2079a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue TwoP32 = 2080a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getConstantFP(BitsToDouble(UINT64_C(0x41f0000000000000)), MVT::f64); 2081a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fmul = DAG.getNode(ISD::FMUL, dl, MVT::f64, TwoP32, Fcvt); 2082a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Lo = DAG.getNode(ISD::TRUNCATE, dl, MVT::i32, Sel2); 2083a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fcvt2 = DAG.getNode(ISD::UINT_TO_FP, dl, MVT::f64, Lo); 2084a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen SDValue Fadd = DAG.getNode(ISD::FADD, dl, MVT::f64, Fmul, Fcvt2); 2085a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen return DAG.getNode(ISD::FP_ROUND, dl, MVT::f32, Fadd, 2086a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen DAG.getIntPtrConstant(0)); 2087a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen 2088a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen } 2089a5afa1cb214146fd270c86f606b634c8ed6682f2Dale Johannesen 2090b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue Tmp1 = DAG.getNode(ISD::SINT_TO_FP, dl, DestVT, Op0); 2091b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman 2092b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue SignSet = DAG.getSetCC(dl, TLI.getSetCCResultType(Op0.getValueType()), 2093b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Op0, DAG.getConstant(0, Op0.getValueType()), 2094b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman ISD::SETLT); 2095b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue Zero = DAG.getIntPtrConstant(0), Four = DAG.getIntPtrConstant(4); 2096b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue CstOffset = DAG.getNode(ISD::SELECT, dl, Zero.getValueType(), 2097b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SignSet, Four, Zero); 2098b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman 2099b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman // If the sign bit of the integer is set, the large number will be treated 2100b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman // as a negative number. To counteract this, the dynamic code adds an 2101b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman // offset depending on the data type. 2102b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman uint64_t FF; 2103b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman switch (Op0.getValueType().getSimpleVT().SimpleTy) { 210435a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unsupported integer type!"); 2105b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i8 : FF = 0x43800000ULL; break; // 2^8 (as a float) 2106b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i16: FF = 0x47800000ULL; break; // 2^16 (as a float) 2107b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i32: FF = 0x4F800000ULL; break; // 2^32 (as a float) 2108b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman case MVT::i64: FF = 0x5F800000ULL; break; // 2^64 (as a float) 2109b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman } 2110b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman if (TLI.isLittleEndian()) FF <<= 32; 2111b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Constant *FudgeFactor = ConstantInt::get( 2112b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Type::getInt64Ty(*DAG.getContext()), FF); 2113b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman 2114b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue CPIdx = DAG.getConstantPool(FudgeFactor, TLI.getPointerTy()); 2115b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 2116b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman CPIdx = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), CPIdx, CstOffset); 2117b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman Alignment = std::min(Alignment, 4u); 2118b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman SDValue FudgeInReg; 2119b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman if (DestVT == MVT::f32) 2120b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman FudgeInReg = DAG.getLoad(MVT::f32, dl, DAG.getEntryNode(), CPIdx, 2121b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman PseudoSourceValue::getConstantPool(), 0, 2122b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman false, false, Alignment); 2123b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman else { 2124b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman FudgeInReg = 2125b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman LegalizeOp(DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, 2126b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman DAG.getEntryNode(), CPIdx, 2127b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman PseudoSourceValue::getConstantPool(), 0, 2128b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman MVT::f32, false, false, Alignment)); 2129b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman } 213022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2131b6b343d77acb5c290f7093e741fbce484d11cedcDan Gohman return DAG.getNode(ISD::FADD, dl, DestVT, Tmp1, FudgeInReg); 213222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 213322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 213422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalINT_TO_FP - This function is responsible for legalizing a 213522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// *INT_TO_FP operation of the specified operand when the target requests that 213622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 213722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal UINT_TO_FP or SINT_TO_FP 213822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that takes a larger input. 2139475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalINT_TO_FP(SDValue LegalOp, 2140e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2141af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2142af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 214322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate *INT_TO_FP operation to use. 2144e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewInTy = LegalOp.getValueType(); 214522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 214622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 214722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 214822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 214922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2150825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewInTy = (MVT::SimpleValueType)(NewInTy.getSimpleVT().SimpleTy+1); 215183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewInTy.isInteger() && "Ran out of possibilities!"); 215222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 215322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports SINT_TO_FP of this type, use it. 21543be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::SINT_TO_FP, NewInTy)) { 21553be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::SINT_TO_FP; 21563be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 215722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 215822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) continue; 215922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 216022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports UINT_TO_FP of this type, use it. 21613be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::UINT_TO_FP, NewInTy)) { 21623be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::UINT_TO_FP; 21633be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 216422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 216522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 216622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 216722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 216822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 216922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Okay, we found the operation and type to use. Zero extend our input to the 217022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // desired type then run the operation on it. 2171af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(OpToUse, dl, DestVT, 217222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, 2173af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen dl, NewInTy, LegalOp)); 217477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 217577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 217622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalFP_TO_INT - This function is responsible for legalizing a 217722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// FP_TO_*INT operation of the specified operand when the target requests that 217822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 217922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal FP_TO_UINT or FP_TO_SINT 218022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that returns a larger result. 2181475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalFP_TO_INT(SDValue LegalOp, 2182e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2183af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2184af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 218522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate FP_TO*INT operation to use. 2186e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewOutTy = DestVT; 21879c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 218822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 2189e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 219022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 219122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2192825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewOutTy = (MVT::SimpleValueType)(NewOutTy.getSimpleVT().SimpleTy+1); 219383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewOutTy.isInteger() && "Ran out of possibilities!"); 219466de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner 21953be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_SINT, NewOutTy)) { 219622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_SINT; 219722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 219822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 2199e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 22003be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_UINT, NewOutTy)) { 220122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_UINT; 220222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 2203e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner } 22040d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 220522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 2206a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner } 2207a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner 2208fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 220927a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Okay, we found the operation and type to use. 2210af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Operation = DAG.getNode(OpToUse, dl, NewOutTy, LegalOp); 2211126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 221227a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Truncate the result of the extended FP_TO_*INT operation to the desired 221327a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // size. 2214af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(ISD::TRUNCATE, dl, DestVT, Operation); 221522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 221613689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner 221722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBSWAP - Open code the operations for BSWAP of the specified operation. 221822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 22198a782a2a8c2f0c82f292d03a3f707232b0bae27bDale JohannesenSDValue SelectionDAGLegalize::ExpandBSWAP(SDValue Op, DebugLoc dl) { 2220e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2221e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SHVT = TLI.getShiftAmountTy(); 2222475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4, Tmp5, Tmp6, Tmp7, Tmp8; 2223825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (VT.getSimpleVT().SimpleTy) { 222435a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Unhandled Expand type in BSWAP!"); 2225825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i16: 22268a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 22278a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 22288a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp1, Tmp2); 2229825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i32: 22308a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 22318a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 22328a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 22338a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 22348a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(0xFF0000, VT)); 22358a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(0xFF00, VT)); 22368a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 22378a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 22388a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 2239825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i64: 22408a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(56, SHVT)); 22418a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(40, SHVT)); 22428a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 22438a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 22448a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 22458a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 22468a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(40, SHVT)); 22478a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(56, SHVT)); 22488a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::AND, dl, VT, Tmp7, DAG.getConstant(255ULL<<48, VT)); 22498a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::AND, dl, VT, Tmp6, DAG.getConstant(255ULL<<40, VT)); 22508a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::AND, dl, VT, Tmp5, DAG.getConstant(255ULL<<32, VT)); 22518a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::AND, dl, VT, Tmp4, DAG.getConstant(255ULL<<24, VT)); 22528a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(255ULL<<16, VT)); 22538a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(255ULL<<8 , VT)); 22548a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp7); 22558a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::OR, dl, VT, Tmp6, Tmp5); 22568a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 22578a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 22588a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp6); 22598a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 22608a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp4); 22610d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner } 226277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 2263edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 226422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBitCount - Expand the specified bitcount instruction into operations. 226522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 2266fdc40a0a696c658d550d894ea03772e5f8af2c94Scott MichelSDValue SelectionDAGLegalize::ExpandBitCount(unsigned Opc, SDValue Op, 22678a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 226822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner switch (Opc) { 226935a389344d21178ee280c2410401b2060b5b879cChris Lattner default: assert(0 && "Cannot expand this yet!"); 227022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTPOP: { 227122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner static const uint64_t mask[6] = { 227222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x5555555555555555ULL, 0x3333333333333333ULL, 227322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x0F0F0F0F0F0F0F0FULL, 0x00FF00FF00FF00FFULL, 227422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x0000FFFF0000FFFFULL, 0x00000000FFFFFFFFULL 227522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner }; 2276e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2277e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ShVT = TLI.getShiftAmountTy(); 227883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 227922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 228022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner //x = (x & mask[i][len/8]) + (x >> (1 << i) & mask[i][len/8]) 2281b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands unsigned EltSize = VT.isVector() ? 2282b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands VT.getVectorElementType().getSizeInBits() : len; 2283b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands SDValue Tmp2 = DAG.getConstant(APInt(EltSize, mask[i]), VT); 2284475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2285fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::ADD, dl, VT, 2286e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::AND, dl, VT, Op, Tmp2), 22878a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::AND, dl, VT, 22888a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3), 22898a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2)); 229022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 229122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Op; 229222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 229322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTLZ: { 229422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we do this: 229522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 1); 229622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 2); 229722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // ... 229822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>16); 229922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>32); // for 64-bit input 230022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // return popcount(~x); 230122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // 230222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // but see also: http://www.hackersdelight.org/HDcode/nlz.cc 2303e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2304e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ShVT = TLI.getShiftAmountTy(); 230583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 230622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 2307475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2308fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::OR, dl, VT, Op, 2309e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3)); 231022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 23118a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Op = DAG.getNOT(dl, Op, VT); 23128a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Op); 231322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 231422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTTZ: { 231522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we use: { return popcount(~x & (x - 1)); } 231622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // unless the target has ctlz but not ctpop, in which case we use: 231722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // { return 32 - nlz(~x & (x-1)); } 231822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // see also http://www.hackersdelight.org/HDcode/ntz.cc 2319e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 23208a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue Tmp3 = DAG.getNode(ISD::AND, dl, VT, 23218a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNOT(dl, Op, VT), 23228a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SUB, dl, VT, Op, 23237581bfa2757a3149c6d17c0fe592e5c3808aa843Bill Wendling DAG.getConstant(1, VT))); 232422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If ISD::CTLZ is legal and CTPOP isn't, then do that instead. 2325f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman if (!TLI.isOperationLegalOrCustom(ISD::CTPOP, VT) && 2326f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.isOperationLegalOrCustom(ISD::CTLZ, VT)) 23278a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::SUB, dl, VT, 232883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(VT.getSizeInBits(), VT), 23298a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::CTLZ, dl, VT, Tmp3)); 23308a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Tmp3); 233122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 233222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 233322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 2334e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 23358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::ExpandNode(SDNode *Node, 23368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 23378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 2338bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 23398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 23408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 23418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 23428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 23438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandBitCount(Node->getOpcode(), Node->getOperand(0), dl); 23448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: 2347775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandBSWAP(Node->getOperand(0), dl)); 23488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 23508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 23518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 23528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, Node->getValueType(0))); 23538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 23558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(1, Node->getValueType(0))); 23568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 23588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_LABEL: 23598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::PREFETCH: 23608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MEMBARRIER: 23618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAEND: 23628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(0)); 23638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::DYNAMIC_STACKALLOC: 23654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ExpandDYNAMIC_STACKALLOC(Node, Results); 23664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 23678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 23688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0; i < Node->getNumValues(); i++) 23698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(i)); 23708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UNDEF: { 2372e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 23738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (VT.isInteger()) 23748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, VT)); 237535a389344d21178ee280c2410401b2060b5b879cChris Lattner else { 237635a389344d21178ee280c2410401b2060b5b879cChris Lattner assert(VT.isFloatingPoint() && "Unknown value type!"); 23778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstantFP(0, VT)); 237835a389344d21178ee280c2410401b2060b5b879cChris Lattner } 23798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAP: { 23828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // If this operation is not supported, lower it to 'abort()' call 23838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::ArgListTy Args; 23848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman std::pair<SDValue, SDValue> CallResult = 23851d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson TLI.LowerCallTo(Node->getOperand(0), Type::getVoidTy(*DAG.getContext()), 23866b61cd185eeb90bec93f042535594132ae1f0f41Tilmann Scheller false, false, false, false, 0, CallingConv::C, false, 238798ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 23888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getExternalSymbol("abort", TLI.getPointerTy()), 238946ada19645c981a0b7932487d163f7582074a4d9Bill Wendling Args, DAG, dl); 23908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(CallResult.second); 23918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND: 23948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BIT_CONVERT: 23958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), Node->getValueType(0), 23968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 23978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_EXTEND: 24008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), 24018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType(), 24028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 24038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 24048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 24068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: we could fall back on load/store here too for targets without 24078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // SAR. However, it is doubtful that any exist. 2408e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 240987862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman EVT VT = Node->getValueType(0); 241087862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman EVT ShiftAmountTy = TLI.getShiftAmountTy(); 2411d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman if (VT.isVector()) 241287862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman ShiftAmountTy = VT; 2413d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman unsigned BitsDiff = VT.getScalarType().getSizeInBits() - 2414d1996360399ad6dbe75ee185b661b16c83146373Dan Gohman ExtraVT.getScalarType().getSizeInBits(); 241587862e77bbf90cf1b68c9eea1f3641ad81435e38Dan Gohman SDValue ShiftCst = DAG.getConstant(BitsDiff, ShiftAmountTy); 24168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SHL, dl, Node->getValueType(0), 24178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), ShiftCst); 2418775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SRA, dl, Node->getValueType(0), Tmp1, ShiftCst); 2419775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 24208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: { 24238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // The only way we can lower this is to turn it into a TRUNCSTORE, 24248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // EXTLOAD pair, targetting a temporary location (a stack slot). 24258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 24268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: there is a choice here between constantly creating new stack 24278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // slots and always reusing the same one. We currently always create 24288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // new ones, as reuse may inhibit scheduling. 2429e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 24308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), ExtraVT, 24318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 24328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 24338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 24368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 24378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandLegalINT_TO_FP(Node->getOpcode() == ISD::SINT_TO_FP, 24388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), Node->getValueType(0), dl); 24398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 24408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: { 24428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SDValue True, False; 2443e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getOperand(0).getValueType(); 2444e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = Node->getValueType(0); 24458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const uint64_t zero[] = {0, 0}; 24468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APFloat apf = APFloat(APInt(VT.getSizeInBits(), 2, zero)); 24478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APInt x = APInt::getSignBit(NVT.getSizeInBits()); 24488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman (void)apf.convertFromAPInt(x, false, APFloat::rmNearestTiesToEven); 24498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getConstantFP(apf, VT); 24508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), 24518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), 24528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, ISD::SETLT); 24538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman True = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, Node->getOperand(0)); 2454775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling False = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, 2455775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getNode(ISD::FSUB, dl, VT, 2456775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(0), Tmp1)); 24578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman False = DAG.getNode(ISD::XOR, dl, NVT, False, 24588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(x, NVT)); 24598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, True, False); 24608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 24618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 2463509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VAARG: { 2464509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman const Value *V = cast<SrcValueSDNode>(Node->getOperand(2))->getValue(); 2465e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2466509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2467509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 24681e559443a17d1b335f697551c6263ba60d5dd827David Greene SDValue VAList = DAG.getLoad(TLI.getPointerTy(), dl, Tmp1, Tmp2, V, 0, 24691e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 2470509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Increment the pointer, VAList, to the next vaarg 2471509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList, 2472509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(TLI.getTargetData()-> 2473adf979900c84d00e1fe0872a68d2819c654b6f29Evan Cheng getTypeAllocSize(VT.getTypeForEVT(*DAG.getContext())), 2474509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TLI.getPointerTy())); 2475509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Store the incremented VAList to the legalized pointer 24761e559443a17d1b335f697551c6263ba60d5dd827David Greene Tmp3 = DAG.getStore(VAList.getValue(1), dl, Tmp3, Tmp2, V, 0, 24771e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 2478509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Load the actual argument out of the pointer VAList 24791e559443a17d1b335f697551c6263ba60d5dd827David Greene Results.push_back(DAG.getLoad(VT, dl, Tmp3, VAList, NULL, 0, 24801e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0)); 2481509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Results[0].getValue(1)); 2482509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2483509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 24848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VACOPY: { 24858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This defaults to loading a pointer from the input and storing it to the 24868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // output, returning the chain. 24878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VD = cast<SrcValueSDNode>(Node->getOperand(3))->getValue(); 24888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VS = cast<SrcValueSDNode>(Node->getOperand(4))->getValue(); 24898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getLoad(TLI.getPointerTy(), dl, Node->getOperand(0), 24901e559443a17d1b335f697551c6263ba60d5dd827David Greene Node->getOperand(2), VS, 0, false, false, 0); 24911e559443a17d1b335f697551c6263ba60d5dd827David Greene Tmp1 = DAG.getStore(Tmp1.getValue(1), dl, Tmp1, Node->getOperand(1), VD, 0, 24921e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 2493775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 24948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 24978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOperand(0).getValueType().getVectorNumElements() == 1) 24988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This must be an access of the only element. Return it. 24998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, Node->getValueType(0), 25008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 25018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 25028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandExtractFromVectorThroughStack(SDValue(Node, 0)); 25038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 25048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 25058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_SUBVECTOR: 2506775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandExtractFromVectorThroughStack(SDValue(Node, 0))); 25078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 2508509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::CONCAT_VECTORS: { 2509775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandVectorBuildThroughStack(Node)); 2510509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2511509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 25128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SCALAR_TO_VECTOR: 2513775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandSCALAR_TO_VECTOR(Node)); 25148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 25153f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INSERT_VECTOR_ELT: 2516775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandINSERT_VECTOR_ELT(Node->getOperand(0), 2517775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1), 2518775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(2), dl)); 25193f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 2520509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 2521509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 2522509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 2523509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 2524e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2525e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 2526509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned NumElems = VT.getVectorNumElements(); 2527509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<SDValue, 8> Ops; 2528509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman for (unsigned i = 0; i != NumElems; ++i) { 2529509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Mask[i] < 0) { 2530509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getUNDEF(EltVT)); 2531509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman continue; 2532509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2533509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned Idx = Mask[i]; 2534509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Idx < NumElems) 2535775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2536775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(0), 2537775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getIntPtrConstant(Idx))); 2538509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 2539775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2540775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1), 2541775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getIntPtrConstant(Idx - NumElems))); 2542509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2543509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &Ops[0], Ops.size()); 2544509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 2545509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2546509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 25478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: { 2548e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpTy = Node->getOperand(0).getValueType(); 25498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (cast<ConstantSDNode>(Node->getOperand(1))->getZExtValue()) { 25508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 1 -> Hi 25518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRL, dl, OpTy, Node->getOperand(0), 25528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OpTy.getSizeInBits()/2, 25538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TLI.getShiftAmountTy())); 25548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), Tmp1); 25558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 25568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 0 -> Lo 25578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), 25588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 25598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 25608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 25618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 25628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 25633f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKSAVE: 25643f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // Expand to CopyFromReg if the target set 25653f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // StackPointerRegisterToSaveRestore. 25663f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 2567775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, SP, 2568775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 25693f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Results[0].getValue(1)); 25703f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } else { 2571775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getUNDEF(Node->getValueType(0))); 25723f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Node->getOperand(0)); 25733f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 25743f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 25753f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKRESTORE: 2576775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // Expand to CopyToReg if the target set 2577775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // StackPointerRegisterToSaveRestore. 2578775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 2579775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyToReg(Node->getOperand(0), dl, SP, 2580775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1))); 2581775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 2582775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Node->getOperand(0)); 2583775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 25843f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 25854bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::FCOPYSIGN: 2586775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFCOPYSIGN(Node)); 25874bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 2588f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEG: 2589f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FNEG(X) -> Y = SUB -0.0, X 2590f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getConstantFP(-0.0, Node->getValueType(0)); 2591f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(ISD::FSUB, dl, Node->getValueType(0), Tmp1, 2592f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Node->getOperand(0)); 2593f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2594f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2595f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FABS: { 2596f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FABS(X) -> Y = (X >u 0.0) ? X : fneg(X). 2597e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2598f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = Node->getOperand(0); 2599f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp2 = DAG.getConstantFP(0.0, VT); 2600775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(Tmp1.getValueType()), 2601f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1, Tmp2, ISD::SETUGT); 2602775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp3 = DAG.getNode(ISD::FNEG, dl, VT, Tmp1); 2603775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SELECT, dl, VT, Tmp2, Tmp1, Tmp3); 2604f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2605f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2606f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 2607f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSQRT: 2608775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::SQRT_F32, RTLIB::SQRT_F64, 2609775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::SQRT_F80, RTLIB::SQRT_PPCF128)); 2610f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2611f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSIN: 2612775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::SIN_F32, RTLIB::SIN_F64, 2613775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::SIN_F80, RTLIB::SIN_PPCF128)); 2614f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2615f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCOS: 2616775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::COS_F32, RTLIB::COS_F64, 2617775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::COS_F80, RTLIB::COS_PPCF128)); 2618f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2619f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG: 2620775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG_F32, RTLIB::LOG_F64, 2621775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG_F80, RTLIB::LOG_PPCF128)); 2622f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2623f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG2: 2624775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG2_F32, RTLIB::LOG2_F64, 2625775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG2_F80, RTLIB::LOG2_PPCF128)); 2626f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2627f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG10: 2628775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG10_F32, RTLIB::LOG10_F64, 2629775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::LOG10_F80, RTLIB::LOG10_PPCF128)); 2630f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2631f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP: 2632775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP_F32, RTLIB::EXP_F64, 2633775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::EXP_F80, RTLIB::EXP_PPCF128)); 2634f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2635f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP2: 2636775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP2_F32, RTLIB::EXP2_F64, 2637775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::EXP2_F80, RTLIB::EXP2_PPCF128)); 2638f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2639f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FTRUNC: 2640775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::TRUNC_F32, RTLIB::TRUNC_F64, 2641775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::TRUNC_F80, RTLIB::TRUNC_PPCF128)); 2642f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2643f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FFLOOR: 2644775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::FLOOR_F32, RTLIB::FLOOR_F64, 2645775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::FLOOR_F80, RTLIB::FLOOR_PPCF128)); 2646f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2647f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCEIL: 2648775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::CEIL_F32, RTLIB::CEIL_F64, 2649775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::CEIL_F80, RTLIB::CEIL_PPCF128)); 2650f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2651f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FRINT: 2652775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::RINT_F32, RTLIB::RINT_F64, 2653775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::RINT_F80, RTLIB::RINT_PPCF128)); 2654f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2655f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEARBYINT: 2656775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::NEARBYINT_F32, 2657775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_F64, 2658775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_F80, 2659775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::NEARBYINT_PPCF128)); 2660f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2661f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOWI: 2662775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::POWI_F32, RTLIB::POWI_F64, 2663775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::POWI_F80, RTLIB::POWI_PPCF128)); 2664f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2665f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOW: 2666775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::POW_F32, RTLIB::POW_F64, 2667775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::POW_F80, RTLIB::POW_PPCF128)); 2668f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2669f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FDIV: 2670775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::DIV_F32, RTLIB::DIV_F64, 2671775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::DIV_F80, RTLIB::DIV_PPCF128)); 2672f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2673f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FREM: 2674775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandFPLibCall(Node, RTLIB::REM_F32, RTLIB::REM_F64, 2675775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling RTLIB::REM_F80, RTLIB::REM_PPCF128)); 2676f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2677927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov case ISD::FP16_TO_FP32: 2678927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov Results.push_back(ExpandLibCall(RTLIB::FPEXT_F16_F32, Node, false)); 2679927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov break; 2680927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov case ISD::FP32_TO_FP16: 2681927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov Results.push_back(ExpandLibCall(RTLIB::FPROUND_F32_F16, Node, false)); 2682927411b7ce0b7852fe4f392d8cd4faaa3881f852Anton Korobeynikov break; 2683f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::ConstantFP: { 2684f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman ConstantFPSDNode *CFP = cast<ConstantFPSDNode>(Node); 2685775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // Check to see if this FP immediate is already legal. 2686775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // If this is a legal constant, turn it into a TargetConstantFP node. 2687a1eaa3c52b75d4fe2bcd4f7c52e56c405ee91d3cEvan Cheng if (TLI.isFPImmLegal(CFP->getValueAPF(), Node->getValueType(0))) 2688775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(SDValue(Node, 0)); 2689f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 2690775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(ExpandConstantFP(CFP, true, DAG, TLI)); 2691f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2692f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 269326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EHSELECTION: { 269426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionSelectorRegister(); 269526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 2696775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(1), dl, Reg, 2697775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 269826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 269926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 270026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 270126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EXCEPTIONADDR: { 270226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionAddressRegister(); 270326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 2704775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, Reg, 2705775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getValueType(0))); 270626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 270726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 270826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 270926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::SUB: { 2710e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 271126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ISD::ADD, VT) && 271226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman TLI.isOperationLegalOrCustom(ISD::XOR, VT) && 271326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "Don't know how to expand this subtraction!"); 271426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ISD::XOR, dl, VT, Node->getOperand(1), 271526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman DAG.getConstant(APInt::getAllOnesValue(VT.getSizeInBits()), VT)); 2716775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::ADD, dl, VT, Tmp2, DAG.getConstant(1, VT)); 2717775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::ADD, dl, VT, Node->getOperand(0), Tmp1)); 271826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 271926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 2720f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UREM: 2721f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SREM: { 2722e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 272326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 2724f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SREM; 2725f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivOpc = isSigned ? ISD::SDIV : ISD::UDIV; 2726f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 2727f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(0); 2728f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp3 = Node->getOperand(1); 27293be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) { 27303be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Tmp2, Tmp3).getValue(1); 27313be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } else if (TLI.isOperationLegalOrCustom(DivOpc, VT)) { 2732f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // X % Y -> X-X/Y*Y 2733f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivOpc, dl, VT, Tmp2, Tmp3); 2734f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, VT, Tmp1, Tmp3); 2735f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, Tmp2, Tmp1); 2736f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else if (isSigned) { 27378983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, true, 27388983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SREM_I8, 27398983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SREM_I16, RTLIB::SREM_I32, 2740f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::SREM_I64, RTLIB::SREM_I128); 2741f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else { 27428983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, false, 27438983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UREM_I8, 27448983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UREM_I16, RTLIB::UREM_I32, 274526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::UREM_I64, RTLIB::UREM_I128); 2746f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 274726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 274826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 274926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 2750f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UDIV: 2751f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SDIV: { 2752f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SDIV; 2753f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 2754e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 275526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 2756f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) 2757f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Node->getOperand(0), 2758f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(1)); 2759f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else if (isSigned) 27608983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, true, 27618983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SDIV_I8, 27628983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SDIV_I16, RTLIB::SDIV_I32, 276326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::SDIV_I64, RTLIB::SDIV_I128); 2764f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 27658983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, false, 27668983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UDIV_I8, 27678983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UDIV_I16, RTLIB::UDIV_I32, 2768f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::UDIV_I64, RTLIB::UDIV_I128); 276926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 277026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 277126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 277226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHU: 277326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHS: { 277426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned ExpandOpcode = Node->getOpcode() == ISD::MULHU ? ISD::UMUL_LOHI : 277526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman ISD::SMUL_LOHI; 2776e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 277726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 277826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ExpandOpcode, VT) && 277926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "If this wasn't legal, it shouldn't have been created!"); 278026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ExpandOpcode, dl, VTs, Node->getOperand(0), 278126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getOperand(1)); 278226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1.getValue(1)); 278326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 278426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 278526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MUL: { 2786e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 278726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 278826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // See if multiply or divide can be lowered using two-result operations. 278926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // We just need the low half of the multiply; try both the signed 279026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // and unsigned forms. If the target supports both SMUL_LOHI and 279126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // UMUL_LOHI, form a preference by checking which forms of plain 279226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // MULH it supports. 279326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasSMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::SMUL_LOHI, VT); 279426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasUMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::UMUL_LOHI, VT); 279526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHS = TLI.isOperationLegalOrCustom(ISD::MULHS, VT); 279626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHU = TLI.isOperationLegalOrCustom(ISD::MULHU, VT); 279726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned OpToUse = 0; 279826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (HasSMUL_LOHI && !HasMULHS) { 279926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 280026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI && !HasMULHU) { 280126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 280226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasSMUL_LOHI) { 280326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 280426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI) { 280526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 280626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 280726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (OpToUse) { 2808775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(OpToUse, dl, VTs, Node->getOperand(0), 2809775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOperand(1))); 281026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 281126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 28128983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, false, 28138983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::MUL_I8, 28148983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::MUL_I16, RTLIB::MUL_I32, 281526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::MUL_I64, RTLIB::MUL_I128); 281626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 281726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 281826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 28194bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SADDO: 28204bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SSUBO: { 28214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 28224bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 28234bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::SADDO ? 28244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 28254bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 28264bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 2827122d06de7482dcb39e7dbcbfe302e39cc55627e5Bill Wendling EVT OType = Node->getValueType(1); 2828775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling 28294bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Zero = DAG.getConstant(0, LHS.getValueType()); 28304bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 28314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // LHSSign -> LHS >= 0 28324bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RHSSign -> RHS >= 0 28334bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // SumSign -> Sum >= 0 28344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 28354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Add: 28364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign == RHSSign) && (LHSSign != SumSign) 28374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Sub: 28384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign != RHSSign) && (LHSSign != SumSign) 28394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 28404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHSSign = DAG.getSetCC(dl, OType, LHS, Zero, ISD::SETGE); 28414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHSSign = DAG.getSetCC(dl, OType, RHS, Zero, ISD::SETGE); 28424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignsMatch = DAG.getSetCC(dl, OType, LHSSign, RHSSign, 28434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Node->getOpcode() == ISD::SADDO ? 28444bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETEQ : ISD::SETNE); 28454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 28464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSign = DAG.getSetCC(dl, OType, Sum, Zero, ISD::SETGE); 28474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSignNE = DAG.getSetCC(dl, OType, LHSSign, SumSign, ISD::SETNE); 28484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 28494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Cmp = DAG.getNode(ISD::AND, dl, OType, SignsMatch, SumSignNE); 28504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Cmp); 28514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 28524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 28534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::UADDO: 28544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::USUBO: { 28554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 28564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 28574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::UADDO ? 28584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 28594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 28604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 2861775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getSetCC(dl, Node->getValueType(1), Sum, LHS, 2862775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOpcode () == ISD::UADDO ? 2863775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling ISD::SETULT : ISD::SETUGT)); 28644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 28654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2866db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::UMULO: 2867db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::SMULO: { 2868e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2869db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue LHS = Node->getOperand(0); 2870db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue RHS = Node->getOperand(1); 2871db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue BottomHalf; 2872db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue TopHalf; 2873ec9d8b00470b2ddabef4e1b58b4f60d69995d8ceNuno Lopes static const unsigned Ops[2][3] = 2874db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { { ISD::MULHU, ISD::UMUL_LOHI, ISD::ZERO_EXTEND }, 2875db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { ISD::MULHS, ISD::SMUL_LOHI, ISD::SIGN_EXTEND }}; 2876db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman bool isSigned = Node->getOpcode() == ISD::SMULO; 2877db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (TLI.isOperationLegalOrCustom(Ops[isSigned][0], VT)) { 2878db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::MUL, dl, VT, LHS, RHS); 2879db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(Ops[isSigned][0], dl, VT, LHS, RHS); 2880db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else if (TLI.isOperationLegalOrCustom(Ops[isSigned][1], VT)) { 2881db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(Ops[isSigned][1], dl, DAG.getVTList(VT, VT), LHS, 2882db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS); 2883db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = BottomHalf.getValue(1); 288435a389344d21178ee280c2410401b2060b5b879cChris Lattner } else { 288535a389344d21178ee280c2410401b2060b5b879cChris Lattner // FIXME: We should be able to fall back to a libcall with an illegal 288635a389344d21178ee280c2410401b2060b5b879cChris Lattner // type in some cases. 288735a389344d21178ee280c2410401b2060b5b879cChris Lattner // Also, we can fall back to a division in some cases, but that's a big 288835a389344d21178ee280c2410401b2060b5b879cChris Lattner // performance hit in the general case. 288935a389344d21178ee280c2410401b2060b5b879cChris Lattner assert(TLI.isTypeLegal(EVT::getIntegerVT(*DAG.getContext(), 289035a389344d21178ee280c2410401b2060b5b879cChris Lattner VT.getSizeInBits() * 2)) && 289135a389344d21178ee280c2410401b2060b5b879cChris Lattner "Don't know how to expand this operation yet!"); 289223b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT WideVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits() * 2); 2893db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman LHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, LHS); 2894db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, RHS); 2895db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, WideVT, LHS, RHS); 2896db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 2897db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(0)); 2898db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 2899db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(1)); 2900db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2901db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (isSigned) { 2902db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getConstant(VT.getSizeInBits() - 1, TLI.getShiftAmountTy()); 2903db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::SRA, dl, VT, BottomHalf, Tmp1); 2904db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, Tmp1, 2905db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman ISD::SETNE); 2906db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else { 2907db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, 2908db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getConstant(0, VT), ISD::SETNE); 2909db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2910db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(BottomHalf); 2911db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(TopHalf); 2912db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman break; 2913db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2914f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BUILD_PAIR: { 2915e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PairTy = Node->getValueType(0); 2916f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, PairTy, Node->getOperand(0)); 2917f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = DAG.getNode(ISD::ANY_EXTEND, dl, PairTy, Node->getOperand(1)); 2918775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2 = DAG.getNode(ISD::SHL, dl, PairTy, Tmp2, 2919f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(PairTy.getSizeInBits()/2, 2920f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman TLI.getShiftAmountTy())); 2921775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::OR, dl, PairTy, Tmp1, Tmp2)); 2922f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2923f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2924509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::SELECT: 2925509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2926509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 2927509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = Node->getOperand(2); 2928775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (Tmp1.getOpcode() == ISD::SETCC) { 2929509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1.getOperand(0), Tmp1.getOperand(1), 2930509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, 2931509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<CondCodeSDNode>(Tmp1.getOperand(2))->get()); 2932775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 2933509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1, 2934509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(0, Tmp1.getValueType()), 2935509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, ISD::SETNE); 2936775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 2937509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 2938509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 29394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::BR_JT: { 29404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Node->getOperand(0); 29414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Table = Node->getOperand(1); 29424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Index = Node->getOperand(2); 29434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 2944e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PTy = TLI.getPointerTy(); 2945071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner 2946071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner const TargetData &TD = *TLI.getTargetData(); 2947071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner unsigned EntrySize = 2948071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner DAG.getMachineFunction().getJumpTableInfo()->getEntrySize(TD); 2949071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner 2950071c62fad0b25ad4131e7f984173a796c1e63f61Chris Lattner Index = DAG.getNode(ISD::MUL, dl, PTy, 29514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Index, DAG.getConstant(EntrySize, PTy)); 29524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Addr = DAG.getNode(ISD::ADD, dl, PTy, Index, Table); 29534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 295423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), EntrySize * 8); 29554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LD = DAG.getExtLoad(ISD::SEXTLOAD, dl, PTy, Chain, Addr, 29561e559443a17d1b335f697551c6263ba60d5dd827David Greene PseudoSourceValue::getJumpTable(), 0, MemVT, 29571e559443a17d1b335f697551c6263ba60d5dd827David Greene false, false, 0); 29584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = LD; 295955e59c186303ff02c0be7429da3b1b36c347f164Dan Gohman if (TM.getRelocationModel() == Reloc::PIC_) { 29604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // For PIC, the sequence is: 2961775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling // BRIND(load(Jumptable + index) + RelocBase) 29624bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RelocBase can be JumpTable, GOT or some sort of global base. 29634bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = DAG.getNode(ISD::ADD, dl, PTy, Addr, 29644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getPICJumpTableRelocBase(Table, DAG)); 29654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2966825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BRIND, dl, MVT::Other, LD.getValue(1), Addr); 29674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 29684bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 29694bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2970f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BRCOND: 2971f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Expand brcond's setcc into its constituent parts and create a BR_CC 2972f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Node. 2973f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = Node->getOperand(0); 2974f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(1); 2975775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling if (Tmp2.getOpcode() == ISD::SETCC) { 2976825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, 2977f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1, Tmp2.getOperand(2), 2978f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2.getOperand(0), Tmp2.getOperand(1), 2979f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 2980775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } else { 2981825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, Tmp1, 2982f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getCondCode(ISD::SETNE), Tmp2, 2983f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(0, Tmp2.getValueType()), 2984f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 2985775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 2986f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(Tmp1); 2987f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2988ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 2989ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = Node->getOperand(0); 2990ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp2 = Node->getOperand(1); 2991ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp3 = Node->getOperand(2); 2992775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling LegalizeSetCCCondCode(Node->getValueType(0), Tmp1, Tmp2, Tmp3, dl); 2993ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 2994ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // If we expanded the SETCC into an AND/OR, return the new node 2995ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman if (Tmp2.getNode() == 0) { 2996ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 2997ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 2998ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 2999ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 3000ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // Otherwise, SETCC for the given comparison type must be completely 3001ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // illegal; expand it into a SELECT_CC. 3002e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 3003ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, VT, Tmp1, Tmp2, 3004ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman DAG.getConstant(1, VT), DAG.getConstant(0, VT), Tmp3); 3005ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 3006ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3007ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 3008bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::SELECT_CC: { 3009bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // LHS 3010bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(1); // RHS 3011bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(2); // True 3012bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(3); // False 3013bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue CC = Node->getOperand(4); 3014bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3015bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp1.getValueType()), 3016775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1, Tmp2, CC, dl); 3017bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3018bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp2.getNode() && "Can't legalize SELECT_CC with legal condition!"); 3019bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = DAG.getConstant(0, Tmp1.getValueType()); 3020bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman CC = DAG.getCondCode(ISD::SETNE); 3021bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, Node->getValueType(0), Tmp1, Tmp2, 3022bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Tmp4, CC); 3023bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 3024bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 3025bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 3026bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::BR_CC: { 3027bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // Chain 3028bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(2); // LHS 3029bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(3); // RHS 3030bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(1); // CC 3031bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3032bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp2.getValueType()), 3033775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp2, Tmp3, Tmp4, dl); 3034bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 3035bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 3036bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp3.getNode() && "Can't legalize BR_CC with legal condition!"); 3037bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = DAG.getConstant(0, Tmp2.getValueType()); 3038bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = DAG.getCondCode(ISD::SETNE); 3039bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::BR_CC, dl, Node->getValueType(0), Tmp1, Tmp4, Tmp2, 3040bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Node->getOperand(4)); 3041bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 3042bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 3043bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 30443f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GLOBAL_OFFSET_TABLE: 30453f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalAddress: 30463f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalTLSAddress: 30473f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ExternalSymbol: 30483f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ConstantPool: 30493f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::JumpTable: 30503f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_W_CHAIN: 30513f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_WO_CHAIN: 30523f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_VOID: 30533f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // FIXME: Custom lowering for these operations shouldn't return null! 30543f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 30553f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(SDValue(Node, i)); 30563f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 30578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 30588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 30598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::PromoteNode(SDNode *Node, 30608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 3061e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OVT = Node->getValueType(0); 30628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::UINT_TO_FP || 3063a64eb92fe305424ebde2e3de2b12160b8bf76047Eli Friedman Node->getOpcode() == ISD::SINT_TO_FP || 3064775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Node->getOpcode() == ISD::SETCC) { 30658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT = Node->getOperand(0).getValueType(); 3066775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling } 3067e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), OVT); 30688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 3069509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SDValue Tmp1, Tmp2, Tmp3; 30708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 30718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 30728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 30738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 30748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Zero extend the argument. 30758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0)); 30768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Perform the larger operation. 30779a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1); 30788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::CTTZ) { 30798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman //if Tmp1 == sizeinbits(NVT) then Tmp1 = sizeinbits(Old VT) 30809a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), 30818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, DAG.getConstant(NVT.getSizeInBits(), NVT), 30828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ISD::SETEQ); 30838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, 30848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OVT.getSizeInBits(), NVT), Tmp1); 30858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else if (Node->getOpcode() == ISD::CTLZ) { 30868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Tmp1 = Tmp1 - (sizeinbits(NVT) - sizeinbits(Old VT)) 30878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, NVT, Tmp1, 30888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(NVT.getSizeInBits() - 30898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT.getSizeInBits(), NVT)); 30908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 3091775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(ISD::TRUNCATE, dl, OVT, Tmp1)); 30928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 30938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: { 30948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman unsigned DiffBits = NVT.getSizeInBits() - OVT.getSizeInBits(); 3095167bea71a4bd19329a218f5e1bd8facfd90a0cf9Bill Wendling Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0)); 3096775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::BSWAP, dl, NVT, Tmp1); 3097775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::SRL, dl, NVT, Tmp1, 3098775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling DAG.getConstant(DiffBits, TLI.getShiftAmountTy())); 3099775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 31008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 31018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 31028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: 31038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_SINT: 31048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalFP_TO_INT(Node->getOperand(0), Node->getValueType(0), 31058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::FP_TO_SINT, dl); 31068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 31078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 31088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 31098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 31108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalINT_TO_FP(Node->getOperand(0), Node->getValueType(0), 31118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::SINT_TO_FP, dl); 31128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 31138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 3114f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::AND: 3115f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::OR: 3116c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::XOR: { 3117c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen unsigned ExtOp, TruncOp; 3118c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen if (OVT.isVector()) { 3119c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen ExtOp = ISD::BIT_CONVERT; 3120c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen TruncOp = ISD::BIT_CONVERT; 312135a389344d21178ee280c2410401b2060b5b879cChris Lattner } else { 312235a389344d21178ee280c2410401b2060b5b879cChris Lattner assert(OVT.isInteger() && "Cannot promote logic operation"); 3123c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen ExtOp = ISD::ANY_EXTEND; 3124c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen TruncOp = ISD::TRUNCATE; 3125c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3126c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Promote each of the values to the new type. 3127c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 3128c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3129c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Perform the larger operation, then convert back 3130775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1, Tmp2); 3131775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(DAG.getNode(TruncOp, dl, OVT, Tmp1)); 3132f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3133c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3134c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::SELECT: { 3135509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned ExtOp, TruncOp; 31364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Node->getValueType(0).isVector()) { 3137509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::BIT_CONVERT; 3138509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::BIT_CONVERT; 31394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else if (Node->getValueType(0).isInteger()) { 3140509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::ANY_EXTEND; 3141509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::TRUNCATE; 3142509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } else { 3143509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::FP_EXTEND; 3144509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::FP_ROUND; 3145509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3146509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 3147509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Promote each of the values to the new type. 3148509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3149509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(2)); 3150509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Perform the larger operation, then round down. 3151509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp1, Tmp2, Tmp3); 3152509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (TruncOp != ISD::FP_ROUND) 3153775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1); 3154509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 3155775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1, 3156509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(0)); 3157775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Results.push_back(Tmp1); 3158509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3159c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3160509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 3161509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 3162509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 3163509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3164509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Cast the two input vectors. 3165509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(0)); 3166509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(1)); 3167509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3168509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Convert the shuffle mask to the right # elements. 3169775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = ShuffleWithNarrowerEltType(NVT, OVT, dl, Tmp1, Tmp2, Mask); 3170775db97a50fb56fece6fbd68e1a6f86418e8063aBill Wendling Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, OVT, Tmp1); 3171509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3172509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3173509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3174ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 317578d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen unsigned ExtOp = ISD::FP_EXTEND; 317678d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen if (NVT.isInteger()) { 317778d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ISD::CondCode CCCode = 317878d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen cast<CondCodeSDNode>(Node->getOperand(2))->get(); 317978d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ExtOp = isSignedIntSetCC(CCCode) ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND; 3180ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 318178d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 318278d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3183ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(DAG.getNode(ISD::SETCC, dl, Node->getValueType(0), 3184ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1, Tmp2, Node->getOperand(2))); 3185ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3186ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 31878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 31888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 31898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 31903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// SelectionDAG::Legalize - This is the entry point for the file. 31913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 3192714efc63d4319b771d89a95aa7a42d400f03d8c9Dan Gohmanvoid SelectionDAG::Legalize(CodeGenOpt::Level OptLevel) { 31933e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// run - This is the main entry point to this class. 31943e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 31951fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(*this, OptLevel).LegalizeDAG(); 31963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 31973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 3198