LegalizeDAG.cpp revision ff89dcb06fbd103373436e2d0ae85f252fae2254
13e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===-- LegalizeDAG.cpp - Implement SelectionDAG::Legalize ----------------===// 2edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman// 33e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// The LLVM Compiler Infrastructure 43e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 54ee451de366474b9c228b4e5fa573795a715216dChris Lattner// This file is distributed under the University of Illinois Open Source 64ee451de366474b9c228b4e5fa573795a715216dChris Lattner// License. See LICENSE.TXT for details. 7edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman// 83e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 93e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// This file implements the SelectionDAG::Legalize method. 113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/CodeGen/SelectionDAG.h" 153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/CodeGen/MachineFunction.h" 1645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner#include "llvm/CodeGen/MachineFrameInfo.h" 17acd80ac7bb19f8bdfa55336d567c9ecbe695c8b8Jim Laskey#include "llvm/CodeGen/MachineJumpTableInfo.h" 1884bc5427d6883f73cfeae3da640acd011d35c006Chris Lattner#include "llvm/CodeGen/MachineModuleInfo.h" 1983489bb7700c69b7a4a8da59365c42d3f5c8129bDevang Patel#include "llvm/CodeGen/DwarfWriter.h" 2083489bb7700c69b7a4a8da59365c42d3f5c8129bDevang Patel#include "llvm/Analysis/DebugInfo.h" 2169de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman#include "llvm/CodeGen/PseudoSourceValue.h" 2261bbbabe3da27479cc9a3a36e49091a1141ba7a3Evan Cheng#include "llvm/Target/TargetFrameInfo.h" 233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/Target/TargetLowering.h" 24e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner#include "llvm/Target/TargetData.h" 253d4ce1108520a4dcf31cb01523e145d286ee64c1Evan Cheng#include "llvm/Target/TargetMachine.h" 260f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner#include "llvm/Target/TargetOptions.h" 27707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman#include "llvm/Target/TargetSubtarget.h" 28adf6a965a321372c640845407195594835921eb4Chris Lattner#include "llvm/CallingConv.h" 293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/Constants.h" 30c10305743c313558405079452138f03124e87581Reid Spencer#include "llvm/DerivedTypes.h" 3186e6cb924b85e7a288a4d8bfde5d1a8fb9810c88Bill Wendling#include "llvm/Function.h" 3283489bb7700c69b7a4a8da59365c42d3f5c8129bDevang Patel#include "llvm/GlobalVariable.h" 339adc0abad3c3ed40a268ccbcee0c74cb9e1359feOwen Anderson#include "llvm/LLVMContext.h" 345e46a19ec848cd4fc9649bd5170c43d9e657668cChris Lattner#include "llvm/Support/CommandLine.h" 35a4f0b3a084d120cfc5b5bb06f64b222f5cb72740Chris Lattner#include "llvm/Support/Compiler.h" 367d696d80409aad20bb5da0fc4eccab941dd371d4Torok Edwin#include "llvm/Support/ErrorHandling.h" 37dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands#include "llvm/Support/MathExtras.h" 3845cfe545ec8177262dabc70580ce05feaa1c3880Chris Lattner#include "llvm/Support/raw_ostream.h" 397971514755a08ec156a1b9c0f7f05d67919c56b7Chris Lattner#include "llvm/ADT/DenseMap.h" 40f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner#include "llvm/ADT/SmallVector.h" 4100755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner#include "llvm/ADT/SmallPtrSet.h" 42033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng#include <map> 433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerusing namespace llvm; 443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// SelectionDAGLegalize - This takes an arbitrary SelectionDAG as input and 473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// hacks on it until the target machine can handle it. This involves 483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating value sizes the machine cannot handle (promoting small sizes to 493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// large sizes or splitting up large values into small values) as well as 503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating operations the machine cannot handle. 513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// This code also does a small amount of optimization and recognition of idioms 533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// as part of its processing. For example, if a target does not support a 543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 'setcc' instruction efficiently, but does support 'brcc' instruction, this 553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// will attempt merge setcc and brc instructions into brcc's. 563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnernamespace { 58360e8200ec544a3c877ff74b48f445140ac9bbd6Chris Lattnerclass VISIBILITY_HIDDEN SelectionDAGLegalize { 593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner TargetLowering &TLI; 603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SelectionDAG &DAG; 6198a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel; 623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 636831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Libcall insertion helpers. 64fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 656831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// LastCALLSEQ_END - This keeps track of the CALLSEQ_END node that has been 666831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// legalized. We use this to ensure that calls are properly serialized 676831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// against each other, including inserted libcalls. 68475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LastCALLSEQ_END; 69fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 706831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// IsLegalizingCall - This member is used *only* for purposes of providing 71fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel /// helpful assertions that a libcall isn't created while another call is 726831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// being legalized (which could lead to non-serialized call sequences). 736831a815999dde4cf801e2076e66b4943964daf2Chris Lattner bool IsLegalizingCall; 74fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner enum LegalizeAction { 7668a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Legal, // The target natively supports this operation. 7768a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Promote, // This operation should be executed in a larger type. 78d74ea2bbd8bb630331f35ead42d385249bd42af8Chris Lattner Expand // Try to expand this to other ops, otherwise use a libcall. 793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner }; 80fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// ValueTypeActions - This is a bitvector that contains two bits for each 823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// value type, where the two bits correspond to the LegalizeAction enum. 833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// This can be queried with "getTypeAction(VT)". 8468a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner TargetLowering::ValueTypeActionImpl ValueTypeActions; 853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// LegalizedNodes - For nodes that are of legal width, and that have more 873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// than one use, this map indicates what regularized operand to use. This 883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// allows us to avoid legalizing the same thing more than once. 89475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue> LegalizedNodes; 903e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 91475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void AddLegalizedOperand(SDValue From, SDValue To) { 9269a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(From, To)); 9369a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner // If someone requests legalization of the new node, return itself. 9469a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner if (From != To) 9569a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(To, To)); 968afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner } 978afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner 983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerpublic: 991fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(SelectionDAG &DAG, CodeGenOpt::Level ol); 1003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// getTypeAction - Return how we should legalize values of this type, either 1023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// it is already legal or we need to expand it into multiple registers of 1033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// smaller integer type, or we need to promote it to a larger type. 104e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson LegalizeAction getTypeAction(EVT VT) const { 10523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson return 10623b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson (LegalizeAction)ValueTypeActions.getTypeAction(*DAG.getContext(), VT); 1073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// isTypeLegal - Return true if this type is legal on this target. 1103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 111e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson bool isTypeLegal(EVT VT) const { 1123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return getTypeAction(VT) == Legal; 1133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner void LegalizeDAG(); 1163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 117456a93afcec7740c45cafa8354317f7b17987a6dChris Lattnerprivate: 118c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// LegalizeOp - We know that the specified value has a legal type. 119c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// Recursively ensure that the operands have legal types, then return the 120c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// result. 121475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LegalizeOp(SDValue O); 122fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1237ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue OptimizeFloatStore(StoreSDNode *ST); 1247ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 1256867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// PerformInsertVectorEltInMemory - Some target cannot handle a variable 1266867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 1276867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// is necessary to spill the vector being inserted into to memory, perform 1286867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// the insert there, and then read the result back. 129475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue PerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, 1303f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 1313f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, 1323f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 133826695281344e3a4c4d44d73dd155107aafd689bDan Gohman 1345a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1355a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// performs the same shuffe in terms of order or result bytes, but on a type 1365a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// whose vector element type is narrower than the original shuffle type. 1375a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 138e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl, 1395a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue N1, SDValue N2, 1405a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SmallVectorImpl<int> &Mask) const; 141fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 142c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner bool LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 14300755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo); 1446831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 145e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson void LegalizeSetCCCondCode(EVT VT, SDValue &LHS, SDValue &RHS, SDValue &CC, 146bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl); 147fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 14847b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman SDValue ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, bool isSigned); 149f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman SDValue ExpandFPLibCall(SDNode *Node, RTLIB::Libcall Call_F32, 150f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, RTLIB::Libcall Call_F80, 151f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128); 152f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman SDValue ExpandIntLibCall(SDNode *Node, bool isSigned, RTLIB::Libcall Call_I16, 153f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I32, 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 SDValue ExpandDBG_STOPPOINT(SDNode *Node); 1604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman void ExpandDYNAMIC_STACKALLOC(SDNode *Node, 1614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results); 1624bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue ExpandFCOPYSIGN(SDNode *Node); 163e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue ExpandLegalINT_TO_FP(bool isSigned, SDValue LegalOp, EVT DestVT, 164af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 165e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue PromoteLegalINT_TO_FP(SDValue LegalOp, EVT DestVT, bool isSigned, 166af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 167e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue PromoteLegalFP_TO_INT(SDValue LegalOp, EVT DestVT, bool isSigned, 168af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 169475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1708a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBSWAP(SDValue Op, DebugLoc dl); 1718a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBitCount(unsigned Opc, SDValue Op, DebugLoc dl); 172475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1733d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue ExpandExtractFromVectorThroughStack(SDValue Op); 1747ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue ExpandVectorBuildThroughStack(SDNode* Node); 1758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 1768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void ExpandNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void PromoteNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner}; 1793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1815a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1825a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// performs the same shuffe in terms of order or result bytes, but on a type 1835a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// whose vector element type is narrower than the original shuffle type. 1849008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman/// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 1855a5ca1519e04310f585197c20e7ae584b7f2d11fNate BegemanSDValue 186e50ed30282bb5b4a9ed952580523f2dda16215acOwen AndersonSelectionDAGLegalize::ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl, 1875a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue N1, SDValue N2, 1889008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVectorImpl<int> &Mask) const { 189e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = NVT.getVectorElementType(); 1905a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumMaskElts = VT.getVectorNumElements(); 1915a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumDestElts = NVT.getVectorNumElements(); 1929008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman unsigned NumEltsGrowth = NumDestElts / NumMaskElts; 1939008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1949008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(NumEltsGrowth && "Cannot promote to vector type with fewer elts!"); 1959008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1969008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman if (NumEltsGrowth == 1) 1979008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &Mask[0]); 1989008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1999008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVector<int, 8> NewMask; 2005a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman for (unsigned i = 0; i != NumMaskElts; ++i) { 2019008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman int Idx = Mask[i]; 2029008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman for (unsigned j = 0; j != NumEltsGrowth; ++j) { 2039008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman if (Idx < 0) 2049008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(-1); 2059008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman else 2069008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(Idx * NumEltsGrowth + j); 2074352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner } 20815684b29552393553524171bff1913e750f390f8Rafael Espindola } 2095a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman assert(NewMask.size() == NumDestElts && "Non-integer NumEltsGrowth?"); 2109008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(TLI.isShuffleMaskLegal(NewMask, NVT) && "Shuffle not legal?"); 2119008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &NewMask[0]); 2124352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 2134352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 2145aa4977fba97e816b5735f0bc53f16a46b24de63Bill WendlingSelectionDAGLegalize::SelectionDAGLegalize(SelectionDAG &dag, 2151fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman CodeGenOpt::Level ol) 216be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling : TLI(dag.getTargetLoweringInfo()), DAG(dag), OptLevel(ol), 2171fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman ValueTypeActions(TLI.getValueTypeActions()) { 218825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE && 2193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Too many value types for ValueTypeActions to hold!"); 2203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAGLegalize::LegalizeDAG() { 2236831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LastCALLSEQ_END = DAG.getEntryNode(); 2246831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = false; 225e5ab34e05d701da042619bf540046efc3c7bc41fMon P Wang 226ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // The legalize process is inherently a bottom-up recursive process (users 227ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // legalize their uses before themselves). Given infinite stack space, we 228ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // could just start legalizing on the root and traverse the whole graph. In 229ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // practice however, this causes us to run out of stack space on large basic 23032fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // blocks. To avoid this problem, compute an ordering of the nodes where each 23132fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // node is only legalized after all of its operands are legalized. 232f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman DAG.AssignTopologicalOrder(); 233f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman for (SelectionDAG::allnodes_iterator I = DAG.allnodes_begin(), 234f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman E = prior(DAG.allnodes_end()); I != next(E); ++I) 235b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(I, 0)); 23632fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner 23732fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // Finally, it's possible the root changed. Get the new root. 238475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue OldRoot = DAG.getRoot(); 23932fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner assert(LegalizedNodes.count(OldRoot) && "Root didn't get legalized?"); 24032fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner DAG.setRoot(LegalizedNodes[OldRoot]); 2413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LegalizedNodes.clear(); 2433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remove dead nodes now. 245190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner DAG.RemoveDeadNodes(); 2463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2486831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 2496831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// FindCallEndFromCallStart - Given a chained node that is part of a call 2506831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_END node that terminates the call sequence. 2516831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallEndFromCallStart(SDNode *Node) { 2526831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_END) 2536831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Node; 2546831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->use_empty()) 2556831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; // No CallSeqEnd 256fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2576831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // The chain is usually at the end. 258475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue TheChain(Node, Node->getNumValues()-1); 259825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) { 2606831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Sometimes it's at the beginning. 261475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, 0); 262825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) { 2636831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Otherwise, hunt for it. 2646831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 1, e = Node->getNumValues(); i != e; ++i) 265825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Node->getValueType(i) == MVT::Other) { 266475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, i); 2676831a815999dde4cf801e2076e66b4943964daf2Chris Lattner break; 2686831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 269fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 270fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, we walked into a node without a chain. 271825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) 2726831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2736831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2746831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 275fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2766831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (SDNode::use_iterator UI = Node->use_begin(), 2776831a815999dde4cf801e2076e66b4943964daf2Chris Lattner E = Node->use_end(); UI != E; ++UI) { 278fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2796831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Make sure to only follow users of our token chain. 2808968450305c28444edc3c272d8752a8db0c2f34aDan Gohman SDNode *User = *UI; 2816831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) 2826831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (User->getOperand(i) == TheChain) 2836831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (SDNode *Result = FindCallEndFromCallStart(User)) 2846831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 2856831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2866831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2876831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 2886831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 289fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// FindCallStartFromCallEnd - Given a chained node that is part of a call 2906831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_START node that initiates the call sequence. 2916831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallStartFromCallEnd(SDNode *Node) { 2926831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(Node && "Didn't find callseq_start for a call??"); 2936831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_START) return Node; 294fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 295825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert(Node->getOperand(0).getValueType() == MVT::Other && 2966831a815999dde4cf801e2076e66b4943964daf2Chris Lattner "Node doesn't have a token chain argument!"); 297ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif return FindCallStartFromCallEnd(Node->getOperand(0).getNode()); 2986831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 2996831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3006831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// LegalizeAllNodesNotLeadingTo - Recursively walk the uses of N, looking to 301fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// see if any uses can reach Dest. If no dest operands can get to dest, 3026831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// legalize them, legalize ourself, and return false, otherwise, return true. 303c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 304c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// Keep track of the nodes we fine that actually do lead to Dest in 305c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// NodesLeadingTo. This avoids retraversing them exponential number of times. 306c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 307c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattnerbool SelectionDAGLegalize::LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 30800755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo) { 3096831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (N == Dest) return true; // N certainly leads to Dest :) 310fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 311c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // If we've already processed this node and it does lead to Dest, there is no 312c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // need to reprocess it. 313c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (NodesLeadingTo.count(N)) return true; 314fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3156831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the first result of this node has been already legalized, then it cannot 3166831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // reach N. 31774807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman if (LegalizedNodes.count(SDValue(N, 0))) return false; 318fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3196831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node has not already been legalized. Check and legalize all 3206831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // operands. If none lead to Dest, then we can legalize this node. 3216831a815999dde4cf801e2076e66b4943964daf2Chris Lattner bool OperandsLeadToDest = false; 3226831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) 3236831a815999dde4cf801e2076e66b4943964daf2Chris Lattner OperandsLeadToDest |= // If an operand leads to Dest, so do we. 324ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif LegalizeAllNodesNotLeadingTo(N->getOperand(i).getNode(), Dest, NodesLeadingTo); 3256831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 326c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (OperandsLeadToDest) { 327c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo.insert(N); 328c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner return true; 329c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 3306831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3316831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node looks safe, legalize it and return false. 332b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(N, 0)); 3336831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return false; 3346831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 3356831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3369f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// ExpandConstantFP - Expands the ConstantFP node to an integer constant or 3379f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// a load from the constant pool. 338475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanstatic SDValue ExpandConstantFP(ConstantFPSDNode *CFP, bool UseCP, 3390d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman SelectionDAG &DAG, const TargetLowering &TLI) { 340004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng bool Extend = false; 34133c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen DebugLoc dl = CFP->getDebugLoc(); 342004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 343004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // If a FP immediate is precise when represented as a float and if the 344004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // target can do an extending load from float to double, we put it into 345004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // the constant pool as a float, even if it's is statically typed as a 346aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // double. This shrinks FP constants and canonicalizes them for targets where 347aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // an FP extending load is the same cost as a normal load (such as on the x87 348aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // fp stack or PPC FP unit). 349e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = CFP->getValueType(0); 3504fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman ConstantFP *LLVMC = const_cast<ConstantFP*>(CFP->getConstantFPValue()); 3519f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng if (!UseCP) { 352825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert((VT == MVT::f64 || VT == MVT::f32) && "Invalid type expansion"); 3537111b02c734c992b8c97d9918118768026dad79eDale Johannesen return DAG.getConstant(LLVMC->getValueAPF().bitcastToAPInt(), 354825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (VT == MVT::f64) ? MVT::i64 : MVT::i32); 355279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng } 356279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng 357e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OrigVT = VT; 358e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SVT = VT; 359825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson while (SVT != MVT::f32) { 360825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SVT = (MVT::SimpleValueType)(SVT.getSimpleVT().SimpleTy - 1); 361ef12057737229452c17983faa20857dba441ef05Evan Cheng if (CFP->isValueValidForType(SVT, CFP->getValueAPF()) && 362ef12057737229452c17983faa20857dba441ef05Evan Cheng // Only do this if the target has a native EXTLOAD instruction from 363ef12057737229452c17983faa20857dba441ef05Evan Cheng // smaller type. 3640329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng TLI.isLoadExtLegal(ISD::EXTLOAD, SVT) && 365aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner TLI.ShouldShrinkFPConstant(OrigVT)) { 36623b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *SType = SVT.getTypeForEVT(*DAG.getContext()); 367baf3c404409d5e47b13984a7f95bfbd6d1f2e79eOwen Anderson LLVMC = cast<ConstantFP>(ConstantExpr::getFPTrunc(LLVMC, SType)); 368ef12057737229452c17983faa20857dba441ef05Evan Cheng VT = SVT; 369ef12057737229452c17983faa20857dba441ef05Evan Cheng Extend = true; 370ef12057737229452c17983faa20857dba441ef05Evan Cheng } 371004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng } 372004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 373475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(LLVMC, TLI.getPointerTy()); 3741606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 375ef12057737229452c17983faa20857dba441ef05Evan Cheng if (Extend) 37633c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen return DAG.getExtLoad(ISD::EXTLOAD, dl, 37739355f9fea790c5a1b12ef0fdcfeac3f533232eaDale Johannesen OrigVT, DAG.getEntryNode(), 3783069b8743769527ce7af6cfb6591a2f0fc2faee4Dan Gohman CPIdx, PseudoSourceValue::getConstantPool(), 37950284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman 0, VT, false, Alignment); 38033c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen return DAG.getLoad(OrigVT, dl, DAG.getEntryNode(), CPIdx, 38150284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, false, 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(), 40405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset, ST->isVolatile(), Alignment); 40505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } else { 40605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do a (aligned) store to a stack slot, then copy from the stack slot 40705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // to the final destination using (unaligned) integer loads and stores. 408e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT StoredVT = ST->getMemoryVT(); 409e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT RegVT = 41023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson TLI.getRegisterType(*DAG.getContext(), EVT::getIntegerVT(*DAG.getContext(), StoredVT.getSizeInBits())); 41105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned StoredBytes = StoredVT.getSizeInBits() / 8; 41205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned RegBytes = RegVT.getSizeInBits() / 8; 41305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned NumRegs = (StoredBytes + RegBytes - 1) / RegBytes; 41405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 415fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Make sure the stack slot is also aligned for the register type. 416fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands SDValue StackPtr = DAG.CreateStackTemporary(StoredVT, RegVT); 417fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 418fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Perform the original store, only redirected to the stack slot. 419fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Store = DAG.getTruncStore(Chain, dl, 420ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson Val, StackPtr, NULL, 0, StoredVT); 42105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 42205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SmallVector<SDValue, 8> Stores; 42305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned Offset = 0; 42405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 42505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do all but one copies using the full register width. 42605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands for (unsigned i = 1; i < NumRegs; i++) { 42705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Load one integer register's worth from the stack slot. 428bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getLoad(RegVT, dl, Store, StackPtr, NULL, 0); 42905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Store it to the final location. Remember the store. 430bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, Ptr, 43105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->getSrcValue(), SVOffset + Offset, 43205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->isVolatile(), 43305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 43405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Increment the pointers. 43505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Offset += RegBytes; 436bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 43705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Increment); 438bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 43905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 44005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 441fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // The last store may be partial. Do a truncating store. On big-endian 442fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // machines this requires an extending load from the stack slot to ensure 443fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // that the bits are in the right place. 44423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 8 * (StoredBytes - Offset)); 445fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 446fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Load from the stack slot. 447bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Store, StackPtr, 448fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands NULL, 0, MemVT); 44905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 450bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, Ptr, 45105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->getSrcValue(), SVOffset + Offset, 452fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MemVT, ST->isVolatile(), 45305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 45405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The order of the stores doesn't matter - say it with a TokenFactor. 455825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 45605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Stores.size()); 45705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 458907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 45983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(ST->getMemoryVT().isInteger() && 46083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands !ST->getMemoryVT().isVector() && 461907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen "Unaligned store of unknown type."); 462f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Get the half-size VT 463e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewStoredVT = 464825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (MVT::SimpleValueType)(ST->getMemoryVT().getSimpleVT().SimpleTy - 1); 46583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands int NumBits = NewStoredVT.getSizeInBits(); 466f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int IncrementSize = NumBits / 8; 467f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 468f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Divide the stored value in two parts. 469475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 470475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = Val; 471bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Hi = DAG.getNode(ISD::SRL, dl, VT, Val, ShiftAmount); 472f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 473f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Store the two parts 474475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store1, Store2; 475bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store1 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Lo:Hi, Ptr, 476f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->getSrcValue(), SVOffset, NewStoredVT, 477f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->isVolatile(), Alignment); 478bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 479f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 480dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands Alignment = MinAlign(Alignment, IncrementSize); 481bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store2 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Hi:Lo, Ptr, 482f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->getSrcValue(), SVOffset + IncrementSize, 483f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio NewStoredVT, ST->isVolatile(), Alignment); 484f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 485825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Store1, Store2); 486f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 487f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 488f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedLoad - Expands an unaligned load to 2 half-size loads. 489f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 490475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedLoad(LoadSDNode *LD, SelectionDAG &DAG, 491e9530ecae4897fe8157bd4d7616043bd8c0484e2Dan Gohman const TargetLowering &TLI) { 492f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int SVOffset = LD->getSrcValueOffset(); 493475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = LD->getChain(); 494475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = LD->getBasePtr(); 495e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = LD->getValueType(0); 496e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT LoadedVT = LD->getMemoryVT(); 497bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = LD->getDebugLoc(); 49883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (VT.isFloatingPoint() || VT.isVector()) { 49923b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT intVT = EVT::getIntegerVT(*DAG.getContext(), LoadedVT.getSizeInBits()); 50005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 50105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a (misaligned) integer load of the same size, 50205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // then bitconvert to floating point or vector. 503bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue newLoad = DAG.getLoad(intVT, dl, Chain, Ptr, LD->getSrcValue(), 50405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset, LD->isVolatile(), 505907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen LD->getAlignment()); 506bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::BIT_CONVERT, dl, LoadedVT, newLoad); 50705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (VT.isFloatingPoint() && LoadedVT != VT) 508bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, VT, Result); 509907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen 51005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Ops[] = { Result, Chain }; 511bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 51205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } else { 51305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Copy the value to a (aligned) stack slot using (unaligned) integer 51405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // loads and stores, then do a (aligned) load from the stack slot. 51523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RegVT = TLI.getRegisterType(*DAG.getContext(), intVT); 51605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned LoadedBytes = LoadedVT.getSizeInBits() / 8; 51705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned RegBytes = RegVT.getSizeInBits() / 8; 51805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned NumRegs = (LoadedBytes + RegBytes - 1) / RegBytes; 51905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 520fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Make sure the stack slot is also aligned for the register type. 521fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands SDValue StackBase = DAG.CreateStackTemporary(LoadedVT, RegVT); 522fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 52305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 52405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SmallVector<SDValue, 8> Stores; 52505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue StackPtr = StackBase; 52605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned Offset = 0; 52705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 52805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do all but one copies using the full register width. 52905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands for (unsigned i = 1; i < NumRegs; i++) { 53005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Load one integer register's worth from the original location. 531bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getLoad(RegVT, dl, Chain, Ptr, LD->getSrcValue(), 53205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset + Offset, LD->isVolatile(), 53305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(LD->getAlignment(), Offset)); 53405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 535bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, StackPtr, 53605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands NULL, 0)); 53705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Increment the pointers. 53805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Offset += RegBytes; 539bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 540bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 54105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Increment); 54205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 54305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 54405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The last copy may be partial. Do an extending load. 54523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 8 * (LoadedBytes - Offset)); 546bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Chain, Ptr, 54705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands LD->getSrcValue(), SVOffset + Offset, 548fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MemVT, LD->isVolatile(), 54905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(LD->getAlignment(), Offset)); 55005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 551fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // On big-endian machines this requires a truncating store to ensure 552fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // that the bits end up in the right place. 553bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, StackPtr, 554fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands NULL, 0, MemVT)); 55505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 55605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The order of the stores doesn't matter - say it with a TokenFactor. 557825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 55805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Stores.size()); 55905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 56005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Finally, perform the original load only redirected to the stack slot. 561bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Load = DAG.getExtLoad(LD->getExtensionType(), dl, VT, TF, StackBase, 56205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands NULL, 0, LoadedVT); 56305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 56405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Callers expect a MERGE_VALUES node. 56505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Ops[] = { Load, TF }; 566bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 56705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 568907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 56983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(LoadedVT.isInteger() && !LoadedVT.isVector() && 570e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner "Unaligned load of unsupported type."); 571e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner 5728155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // Compute the new VT that is half the size of the old one. This is an 5738155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // integer MVT. 57483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned NumBits = LoadedVT.getSizeInBits(); 575e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewLoadedVT; 57623b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson NewLoadedVT = EVT::getIntegerVT(*DAG.getContext(), NumBits/2); 577e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner NumBits >>= 1; 578fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 579e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned Alignment = LD->getAlignment(); 580e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned IncrementSize = NumBits / 8; 581f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ISD::LoadExtType HiExtType = LD->getExtensionType(); 582f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 583f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If the original load is NON_EXTLOAD, the hi part load must be ZEXTLOAD. 584f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (HiExtType == ISD::NON_EXTLOAD) 585f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio HiExtType = ISD::ZEXTLOAD; 586f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 587f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Load the value in two parts 588475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 589f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (TLI.isLittleEndian()) { 590bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getSrcValue(), 591f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset, NewLoadedVT, LD->isVolatile(), Alignment); 592bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 593f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 594bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getSrcValue(), 595f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset + IncrementSize, NewLoadedVT, LD->isVolatile(), 596dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands MinAlign(Alignment, IncrementSize)); 597f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 598bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getSrcValue(), 599ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson SVOffset, NewLoadedVT, LD->isVolatile(), Alignment); 600bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 601f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 602bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getSrcValue(), 603f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset + IncrementSize, NewLoadedVT, LD->isVolatile(), 604dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands MinAlign(Alignment, IncrementSize)); 605f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 606f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 607f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // aggregate the two parts 608475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 609bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::SHL, dl, VT, Hi, ShiftAmount); 610bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::OR, dl, VT, Result, Lo); 611f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 612825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 613f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Hi.getValue(1)); 614f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 615475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Result, TF }; 616bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 617f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 618912095becac923ff614d7b07728eb345ada67765Evan Cheng 6196867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// PerformInsertVectorEltInMemory - Some target cannot handle a variable 6206867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 6216867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// is necessary to spill the vector being inserted into to memory, perform 6226867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// the insert there, and then read the result back. 623475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize:: 624bb5da918545efb54857a09c983a5a7f22a7e04d4Dale JohannesenPerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, SDValue Idx, 625bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl) { 626475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1 = Vec; 627475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp2 = Val; 628475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = Idx; 629fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 6306867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // If the target doesn't support this, we have to spill the input vector 6316867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // to a temporary stack slot, update the element, then reload it. This is 6326867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // badness. We could also load the value into a vector register (either 6336867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // with a "move to register" or "extload into register" instruction, then 6346867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // permute it into place, if the idx is a constant and if the idx is 6356867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // supported by the target. 636e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp1.getValueType(); 637e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 638e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT IdxVT = Tmp3.getValueType(); 639e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PtrVT = TLI.getPointerTy(); 640475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(VT); 6416867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 642ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex(); 643ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 6446867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the vector. 645bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Tmp1, StackPtr, 646ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng PseudoSourceValue::getFixedStack(SPFI), 0); 6476867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 6486867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Truncate or zero extend offset to target pointer type. 6498e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands unsigned CastOpc = IdxVT.bitsGT(PtrVT) ? ISD::TRUNCATE : ISD::ZERO_EXTEND; 650bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(CastOpc, dl, PtrVT, Tmp3); 6516867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Add the offset to the index. 65283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned EltSize = EltVT.getSizeInBits()/8; 653bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(ISD::MUL, dl, IdxVT, Tmp3,DAG.getConstant(EltSize, IdxVT)); 654bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue StackPtr2 = DAG.getNode(ISD::ADD, dl, IdxVT, Tmp3, StackPtr); 6556867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the scalar value. 656bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ch = DAG.getTruncStore(Ch, dl, Tmp2, StackPtr2, 657ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng PseudoSourceValue::getFixedStack(SPFI), 0, EltVT); 6586867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Load the updated vector. 659bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getLoad(VT, dl, Ch, StackPtr, 660ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng PseudoSourceValue::getFixedStack(SPFI), 0); 6616867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman} 6626867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 663e9f1015d1f184a51aaadfd03be0846bd5e7d08a2Mon P Wang 6643f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanSDValue SelectionDAGLegalize:: 6653f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, SDValue Idx, DebugLoc dl) { 6663f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (ConstantSDNode *InsertPos = dyn_cast<ConstantSDNode>(Idx)) { 6673f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // SCALAR_TO_VECTOR requires that the type of the value being inserted 6683f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // match the element type of the vector being created, except for 6693f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // integers in which case the inserted value can be over width. 670e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = Vec.getValueType().getVectorElementType(); 6713f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (Val.getValueType() == EltVT || 6723f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman (EltVT.isInteger() && Val.getValueType().bitsGE(EltVT))) { 6733f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ScVec = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, 6743f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Vec.getValueType(), Val); 6753f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6763f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman unsigned NumElts = Vec.getValueType().getVectorNumElements(); 6773f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // We generate a shuffle of InVec and ScVec, so the shuffle mask 6783f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // should be 0,1,2,3,4,5... with the appropriate element replaced with 6793f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // elt 0 of the RHS. 6803f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SmallVector<int, 8> ShufOps; 6813f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0; i != NumElts; ++i) 6823f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman ShufOps.push_back(i != InsertPos->getZExtValue() ? i : NumElts); 6833f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6843f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return DAG.getVectorShuffle(Vec.getValueType(), dl, Vec, ScVec, 6853f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman &ShufOps[0]); 6863f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 6873f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 6883f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return PerformInsertVectorEltInMemory(Vec, Val, Idx, dl); 6893f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman} 6903f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6917ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::OptimizeFloatStore(StoreSDNode* ST) { 6927ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Turn 'store float 1.0, Ptr' -> 'store int 0x12345678, Ptr' 6937ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: We shouldn't do this for TargetConstantFP's. 6947ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: move this to the DAG Combiner! Note that we can't regress due 6957ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // to phase ordering between legalized code and the dag combiner. This 6967ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // probably means that we need to integrate dag combiner and legalizer 6977ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // together. 6987ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We generally can't do this one for long doubles. 6997ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp1 = ST->getChain(); 7007ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp2 = ST->getBasePtr(); 7017ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp3; 7027ef3d178660b82d1571757e49f44b004d772a116Eli Friedman int SVOffset = ST->getSrcValueOffset(); 7037ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Alignment = ST->getAlignment(); 7047ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bool isVolatile = ST->isVolatile(); 7057ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = ST->getDebugLoc(); 7067ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(ST->getValue())) { 707825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (CFP->getValueType(0) == MVT::f32 && 708825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson getTypeAction(MVT::i32) == Legal) { 7097ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF(). 7107ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bitcastToAPInt().zextOrTrunc(32), 711825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::i32); 7127ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 7137ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SVOffset, isVolatile, Alignment); 714825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (CFP->getValueType(0) == MVT::f64) { 7157ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // If this target supports 64-bit registers, do a single 64-bit store. 716825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (getTypeAction(MVT::i64) == Legal) { 7177ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF().bitcastToAPInt(). 718825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson zextOrTrunc(64), MVT::i64); 7197ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 7207ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SVOffset, isVolatile, Alignment); 721825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (getTypeAction(MVT::i32) == Legal && !ST->isVolatile()) { 7227ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, if the target supports 32-bit registers, use 2 32-bit 7237ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // stores. If the target supports neither 32- nor 64-bits, this 7247ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // xform is certainly not worth it. 7257ef3d178660b82d1571757e49f44b004d772a116Eli Friedman const APInt &IntVal =CFP->getValueAPF().bitcastToAPInt(); 726825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Lo = DAG.getConstant(APInt(IntVal).trunc(32), MVT::i32); 727825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Hi = DAG.getConstant(IntVal.lshr(32).trunc(32), MVT::i32); 7287ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (TLI.isBigEndian()) std::swap(Lo, Hi); 7297ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 7307ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Lo = DAG.getStore(Tmp1, dl, Lo, Tmp2, ST->getSrcValue(), 7317ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SVOffset, isVolatile, Alignment); 7327ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 7337ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DAG.getIntPtrConstant(4)); 7347ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Hi = DAG.getStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), SVOffset+4, 7357ef3d178660b82d1571757e49f44b004d772a116Eli Friedman isVolatile, MinAlign(Alignment, 4U)); 7367ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 737825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 7387ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7397ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7407ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7417ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return SDValue(); 7427ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 7437ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 744a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// LegalizeOp - We know that the specified value has a legal type, and 745a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// that its operands are legal. Now ensure that the operation itself 746a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// is legal, recursively ensuring that the operands' operations remain 747a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// legal. 748475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) { 74909ec1b058331aadb29a348091611d23892b5c492Chris Lattner if (Op.getOpcode() == ISD::TargetConstant) // Allow illegal target nodes. 75009ec1b058331aadb29a348091611d23892b5c492Chris Lattner return Op; 751fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 752ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif SDNode *Node = Op.getNode(); 7537d2ad624fa749a6d3edac0d94e9c107989c16304Dale Johannesen DebugLoc dl = Node->getDebugLoc(); 754e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner 7551fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 7561fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman assert(getTypeAction(Node->getValueType(i)) == Legal && 7571fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7581fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman 7591fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 7601fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman assert((isTypeLegal(Node->getOperand(i).getValueType()) || 7611fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman Node->getOperand(i).getOpcode() == ISD::TargetConstant) && 7621fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 76445982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 76545982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 766475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 767e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (I != LegalizedNodes.end()) return I->second; 7683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 769475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 770475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result = Op; 771456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner bool isCustom = false; 772fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 7738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Figure out the correct action; the way to query this varies by opcode 7748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::LegalizeAction Action; 7758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman bool SimpleFinishLegalizing = true; 7763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 7778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_W_CHAIN: 7788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_WO_CHAIN: 7798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_VOID: 7808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAARG: 7818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STACKSAVE: 782825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Action = TLI.getOperationAction(Node->getOpcode(), MVT::Other); 7838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 7848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 7858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 7868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 7878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 7888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType()); 7898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 7908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: 7918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 792e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT InnerType = cast<VTSDNode>(Node->getOperand(1))->getVT(); 7938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), InnerType); 7948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 7958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 7963be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SELECT_CC: 7973be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SETCC: 7983be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::BR_CC: { 7993be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CCOperand = Node->getOpcode() == ISD::SELECT_CC ? 4 : 8003be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getOpcode() == ISD::SETCC ? 2 : 1; 8013be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CompareOperand = Node->getOpcode() == ISD::BR_CC ? 2 : 0; 802e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(CompareOperand).getValueType(); 8033be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman ISD::CondCode CCCode = 8043be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman cast<CondCodeSDNode>(Node->getOperand(CCOperand))->get(); 8053be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getCondCodeAction(CCCode, OpVT); 8063be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Action == TargetLowering::Legal) { 8073be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Node->getOpcode() == ISD::SELECT_CC) 8083be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 8093be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getValueType(0)); 8103be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman else 8113be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), OpVT); 8123be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8133be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 8143be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::LOAD: 8168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STORE: 817ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: Model these properly. LOAD and STORE are complicated, and 818ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // STORE expects the unlegalized operand in some cases. 819ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 820ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_START: 8228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_END: 823ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: This shouldn't be necessary. These nodes have special properties 824ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // dealing with the recursive nature of legalization. Removing this 825ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // special case should be done as part of making LegalizeDAG non-recursive. 826ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 827ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: 8298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 8308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SADDO: 8318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SSUBO: 8328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UADDO: 8338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::USUBO: 8348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SMULO: 8358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UMULO: 8368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FPOWI: 8378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 8388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 8398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 840f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // These operations lie about being legal: when they claim to be legal, 841f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // they should actually be expanded. 8428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Action == TargetLowering::Legal) 8448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Expand; 8458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAMPOLINE: 8478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 8488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 8494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // These operations lie about being legal: when they claim to be legal, 8504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // they should actually be custom-lowered. 8514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Action == TargetLowering::Legal) 8534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TargetLowering::Custom; 8548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BUILD_VECTOR: 856b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // A weird case: legalization for BUILD_VECTOR never legalizes the 857b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // operands! 858b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // FIXME: This really sucks... changing it isn't semantically incorrect, 859b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // but it massively pessimizes the code for floating-point BUILD_VECTORs 860b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // because ConstantFP operands get legalized into constant pool loads 861b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // before the BUILD_VECTOR code can see them. It doesn't usually bite, 862b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // though, because BUILD_VECTORS usually get lowered into other nodes 863b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // which get legalized properly. 8648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SimpleFinishLegalizing = false; 865948c1b1cda280c6428dbeaa03a6c2c559dbb93f4Chris Lattner break; 8663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 867d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner if (Node->getOpcode() >= ISD::BUILTIN_OP_END) { 8688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Legal; 8698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 8708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 8728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 874d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner 8758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (SimpleFinishLegalizing) { 8768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVector<SDValue, 8> Ops, ResultVals; 8778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 8788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops.push_back(LegalizeOp(Node->getOperand(i))); 8798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 8808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: break; 8818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR: 8828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRIND: 8838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_JT: 8848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_CC: 8858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRCOND: 8868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Branches tweak the chain to include LastCALLSEQ_END 887825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ops[0] = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Ops[0], 8888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END); 8898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[0] = LegalizeOp(Ops[0]); 8908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 8918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SHL: 8938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRL: 8948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRA: 8958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTL: 8968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTR: 8978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Legalizing shifts/rotates requires adjusting the shift amount 8988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // to the appropriate width. 8998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!Ops[1].getValueType().isVector()) 9008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[1] = LegalizeOp(DAG.getShiftAmountOperand(Ops[1])); 9018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 902db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SRL_PARTS: 903db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SRA_PARTS: 904db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SHL_PARTS: 905db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman // Legalizing shifts/rotates requires adjusting the shift amount 906db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman // to the appropriate width. 907db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman if (!Ops[2].getValueType().isVector()) 908db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman Ops[2] = LegalizeOp(DAG.getShiftAmountOperand(Ops[2])); 9092c9489d6e96d99f77b6c31919805b5e61954deb2Dan Gohman break; 9108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Result = DAG.UpdateNodeOperands(Result.getValue(0), Ops.data(), 9138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops.size()); 9148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Action) { 9158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Legal: 916d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 9178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Result.getValue(i)); 9188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Custom: 9208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FIXME: The handling for custom lowering with multiple results is 9218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // a complete mess. 9228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = TLI.LowerOperation(Result, DAG); 9238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Tmp1.getNode()) { 9248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) { 9258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (e == 1) 9268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1); 9278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 9288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1.getValue(i)); 9298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FALL THROUGH 9348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Expand: 9358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ExpandNode(Result.getNode(), ResultVals); 9368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Promote: 9388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman PromoteNode(Result.getNode(), ResultVals); 9398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!ResultVals.empty()) { 9428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = ResultVals.size(); i != e; ++i) { 9438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (ResultVals[i] != SDValue(Node, i)) 9448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals[i] = LegalizeOp(ResultVals[i]); 9458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman AddLegalizedOperand(SDValue(Node, i), ResultVals[i]); 9468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman return ResultVals[Op.getResNo()]; 948d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner } 9498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 9528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: 953e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#ifndef NDEBUG 95445cfe545ec8177262dabc70580ce05feaa1c3880Chris Lattner errs() << "NODE: "; 95545cfe545ec8177262dabc70580ce05feaa1c3880Chris Lattner Node->dump(&DAG); 95645cfe545ec8177262dabc70580ce05feaa1c3880Chris Lattner errs() << "\n"; 957e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#endif 958c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Do not know how to legalize this operator!"); 95998ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman 960b2827b0901162169bb2692b77a839c9767849134Chris Lattner case ISD::BUILD_VECTOR: 961b2827b0901162169bb2692b77a839c9767849134Chris Lattner switch (TLI.getOperationAction(ISD::BUILD_VECTOR, Node->getValueType(0))) { 962c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 9632332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner case TargetLowering::Custom: 9642332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Tmp3 = TLI.LowerOperation(Result, DAG); 965ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()) { 9662332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Result = Tmp3; 9672332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 9682332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 9692332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner // FALLTHROUGH 970ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner case TargetLowering::Expand: 971ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandBUILD_VECTOR(Result.getNode()); 972b2827b0901162169bb2692b77a839c9767849134Chris Lattner break; 9732332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 9742332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 9756831a815999dde4cf801e2076e66b4943964daf2Chris Lattner case ISD::CALLSEQ_START: { 9766831a815999dde4cf801e2076e66b4943964daf2Chris Lattner SDNode *CallEnd = FindCallEndFromCallStart(Node); 977fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 9786831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Recursively Legalize all of the inputs of the call end that do not lead 9796831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // to this call start. This ensures that any libcalls that need be inserted 9806831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // are inserted *before* the CALLSEQ_START. 98100755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner {SmallPtrSet<SDNode*, 32> NodesLeadingTo; 9826831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = CallEnd->getNumOperands(); i != e; ++i) 983ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif LegalizeAllNodesNotLeadingTo(CallEnd->getOperand(i).getNode(), Node, 984c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo); 985c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 9866831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 9876831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Now that we legalized all of the inputs (which may have inserted 9886831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // libcalls) create the new CALLSEQ_START node. 9896831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 9906831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 9916831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Merge in the last call, to ensure that this call start after the last 9926831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // call ended. 993c5d7d7c715f7b7a4eeea1ceaafefc3d1d6df2addChris Lattner if (LastCALLSEQ_END.getOpcode() != ISD::EntryToken) { 994825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 995ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp1, LastCALLSEQ_END); 996b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner Tmp1 = LegalizeOp(Tmp1); 997b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner } 998fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 9996831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Do not try to legalize the target-specific arguments (#1+). 10006831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Tmp1 != Node->getOperand(0)) { 1001475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 10026831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Ops[0] = Tmp1; 1003f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 10046831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1005fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10066831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Remember that the CALLSEQ_START is legalized. 10074b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(0), Result); 10084b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) // If this has a flag result, remember it. 10094b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 1010fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10116831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Now that the callseq_start and all of the non-call nodes above this call 1012fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // sequence have been legalized, legalize the call itself. During this 10136831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // process, no libcalls can/will be inserted, guaranteeing that no calls 10146831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // can overlap. 10156831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "Inconsistent sequentialization of calls!"); 10166831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Note that we are selecting this call! 1017475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LastCALLSEQ_END = SDValue(CallEnd, 0); 10186831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = true; 1019fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10206831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call, starting from the CALLSEQ_END. 10216831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(LastCALLSEQ_END); 10226831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "CALLSEQ_END should have cleared this!"); 10236831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 10246831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 102516cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner case ISD::CALLSEQ_END: 10266831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the CALLSEQ_START node hasn't been legalized first, legalize it. This 10276831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // will cause this node to be legalized as well as handling libcalls right. 1028ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (LastCALLSEQ_END.getNode() != Node) { 1029475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LegalizeOp(SDValue(FindCallStartFromCallEnd(Node), 0)); 1030475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 10316831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(I != LegalizedNodes.end() && 10326831a815999dde4cf801e2076e66b4943964daf2Chris Lattner "Legalizing the call start should have legalized this node!"); 10336831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return I->second; 10346831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1035fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1036fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, the call start has been legalized and everything is going 10376831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // according to plan. Just legalize ourselves normally here. 10383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 103970814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // Do not try to legalize the target-specific arguments (#1+), except for 104070814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // an optional flag input. 1041825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Node->getOperand(Node->getNumOperands()-1).getValueType() != MVT::Flag){ 104270814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0)) { 1043475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 104470814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 1045f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 104670814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 104770814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } else { 104870814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(Node->getNumOperands()-1)); 104970814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0) || 105070814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 != Node->getOperand(Node->getNumOperands()-1)) { 1051475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 105270814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 105370814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops.back() = Tmp2; 1054f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 105570814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 10566a5428934ba6159c1acc541944332e51a6cfa59aChris Lattner } 10574b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner assert(IsLegalizingCall && "Call sequence imbalance between start/end?"); 10586831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // This finishes up call legalization. 10596831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = false; 1060fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10614b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner // If the CALLSEQ_END node has a flag, remember that we legalized it. 1062475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Result.getValue(0)); 10634b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) 1064475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Result.getValue(1)); 106599a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Result.getValue(Op.getResNo()); 1066f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::LOAD: { 1067466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng LoadSDNode *LD = cast<LoadSDNode>(Node); 1068466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = LegalizeOp(LD->getChain()); // Legalize the chain. 1069466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp2 = LegalizeOp(LD->getBasePtr()); // Legalize the base pointer. 10702d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 1071466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng ISD::LoadExtType ExtType = LD->getExtensionType(); 1072466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng if (ExtType == ISD::NON_EXTLOAD) { 1073e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1074466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, LD->getOffset()); 1075466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = Result.getValue(0); 1076466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = Result.getValue(1); 1077fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1078466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng switch (TLI.getOperationAction(Node->getOpcode(), VT)) { 1079c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 1080f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1081f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned load and the target doesn't support it, 1082f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1083bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) { 1084e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = LD->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1085e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 1086f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (LD->getAlignment() < ABIAlignment){ 1087debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 1088debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson DAG, TLI); 1089f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp3 = Result.getOperand(0); 1090f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp4 = Result.getOperand(1); 1091907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp3 = LegalizeOp(Tmp3); 1092907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp4 = LegalizeOp(Tmp4); 1093f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1094f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1095f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 1096466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Custom: 1097466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = TLI.LowerOperation(Tmp3, DAG); 1098ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) { 1099466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = LegalizeOp(Tmp1); 1100466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1101466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1102466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1103466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Promote: { 1104466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Only promote a load of vector type to another. 110583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Cannot promote this load!"); 1106466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Change base type to a different vector type. 1107e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), VT); 1108466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng 1109ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp1 = DAG.getLoad(NVT, dl, Tmp1, Tmp2, LD->getSrcValue(), 1110d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman LD->getSrcValueOffset(), 1111d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman LD->isVolatile(), LD->getAlignment()); 1112b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen Tmp3 = LegalizeOp(DAG.getNode(ISD::BIT_CONVERT, dl, VT, Tmp1)); 111341f6cbbeb21d7d4376b8c0302b9766c3e43be5f2Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1114466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1115f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 1116466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1117fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Since loads produce two values, make sure to remember that we 1118466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // legalized both of them. 1119475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp3); 1120475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp4); 112199a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Op.getResNo() ? Tmp4 : Tmp3; 1122466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } else { 1123e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SrcVT = LD->getMemoryVT(); 112483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SrcWidth = SrcVT.getSizeInBits(); 1125f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands int SVOffset = LD->getSrcValueOffset(); 1126f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned Alignment = LD->getAlignment(); 1127f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands bool isVolatile = LD->isVolatile(); 1128f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 112983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (SrcWidth != SrcVT.getStoreSizeInBits() && 1130f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Some targets pretend to have an i1 loading operation, and actually 1131f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // load an i8. This trick is correct for ZEXTLOAD because the top 7 1132f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // bits are guaranteed to be zero; it helps the optimizers understand 1133f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // that these bits are zero. It is also useful for EXTLOAD, since it 1134f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // tells the optimizers that those bits are undefined. It would be 1135f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // nice to have an effective generic way of getting these benefits... 1136f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Until such a way is found, don't insist on promoting i1 here. 1137825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (SrcVT != MVT::i1 || 1138825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson TLI.getLoadExtAction(ExtType, MVT::i1) == TargetLowering::Promote)) { 1139f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Promote to a byte-sized load if not loading an integral number of 1140f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // bytes. For example, promote EXTLOAD:i20 -> EXTLOAD:i24. 114183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned NewWidth = SrcVT.getStoreSizeInBits(); 114223b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = EVT::getIntegerVT(*DAG.getContext(), NewWidth); 1143475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch; 1144f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1145f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // The extra bits are guaranteed to be zero, since we stored them that 1146f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // way. A zext load from NVT thus automatically gives zext from SrcVT. 1147f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1148f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ISD::LoadExtType NewExtType = 1149f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ExtType == ISD::ZEXTLOAD ? ISD::ZEXTLOAD : ISD::EXTLOAD; 1150f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1151ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getExtLoad(NewExtType, dl, Node->getValueType(0), 1152f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1, Tmp2, LD->getSrcValue(), SVOffset, 1153f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands NVT, isVolatile, Alignment); 1154f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1155f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Ch = Result.getValue(1); // The chain. 1156f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1157f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (ExtType == ISD::SEXTLOAD) 1158f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Having the top bits zero doesn't help when sign extending. 1159fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 1160ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), 1161f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result, DAG.getValueType(SrcVT)); 1162f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands else if (ExtType == ISD::ZEXTLOAD || NVT == Result.getValueType()) 1163f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // All the top bits are guaranteed to be zero - inform the optimizers. 1164fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::AssertZext, dl, 1165ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), Result, 1166f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getValueType(SrcVT)); 1167f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1168f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); 1169f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Ch); 1170f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else if (SrcWidth & (SrcWidth - 1)) { 1171f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // If not loading a power-of-2 number of bits, expand as two loads. 117283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(SrcVT.isExtended() && !SrcVT.isVector() && 1173f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands "Unsupported extload!"); 1174f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned RoundWidth = 1 << Log2_32(SrcWidth); 1175f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(RoundWidth < SrcWidth); 1176f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned ExtraWidth = SrcWidth - RoundWidth; 1177f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(ExtraWidth < RoundWidth); 1178f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 1179f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands "Load size not an integral number of bytes!"); 118023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 118123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 1182475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi, Ch; 1183f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned IncrementSize; 1184f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1185f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (TLI.isLittleEndian()) { 1186f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // EXTLOAD:i24 -> ZEXTLOAD:i16 | (shl EXTLOAD@+2:i8, 16) 1187f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the bottom RoundWidth bits. 1188ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, 1189ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Tmp1, Tmp2, 1190f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset, RoundVT, isVolatile, 1191f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Alignment); 1192f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1193f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the remaining ExtraWidth bits. 1194f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands IncrementSize = RoundWidth / 8; 1195ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 1196f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getIntPtrConstant(IncrementSize)); 1197ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2, 1198f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset + IncrementSize, 1199f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ExtraVT, isVolatile, 1200f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands MinAlign(Alignment, IncrementSize)); 1201f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1202f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Build a factor node to remember that this load is independent of the 1203f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // other one. 1204825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 1205f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Hi.getValue(1)); 1206f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1207f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Move the top bits to the right place. 1208ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 1209f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getConstant(RoundWidth, TLI.getShiftAmountTy())); 1210f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1211f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Join the hi and lo parts. 1212ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 1213f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 1214f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Big endian - avoid unaligned loads. 1215f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // EXTLOAD:i24 -> (shl EXTLOAD:i16, 8) | ZEXTLOAD@+2:i8 1216f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the top RoundWidth bits. 1217ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2, 1218f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset, RoundVT, isVolatile, 1219f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Alignment); 1220f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1221f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the remaining ExtraWidth bits. 1222f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands IncrementSize = RoundWidth / 8; 1223ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 1224f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getIntPtrConstant(IncrementSize)); 1225fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, 1226ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Tmp1, Tmp2, 1227f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset + IncrementSize, 1228f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ExtraVT, isVolatile, 1229f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands MinAlign(Alignment, IncrementSize)); 1230f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1231f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Build a factor node to remember that this load is independent of the 1232f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // other one. 1233825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 1234f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Hi.getValue(1)); 1235f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1236f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Move the top bits to the right place. 1237ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 1238f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy())); 1239f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1240f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Join the hi and lo parts. 1241ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 1242f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1243f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1244f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); 1245f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Ch); 1246f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else { 12470329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng switch (TLI.getLoadExtAction(ExtType, SrcVT)) { 1248c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 1249f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Custom: 1250f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands isCustom = true; 1251f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // FALLTHROUGH 1252f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Legal: 1253f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, LD->getOffset()); 1254f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = Result.getValue(0); 1255f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = Result.getValue(1); 1256f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1257f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (isCustom) { 1258f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp3 = TLI.LowerOperation(Result, DAG); 1259ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()) { 1260f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Tmp3); 1261f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Tmp3.getValue(1)); 1262f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1263f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else { 1264f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // If this is an unaligned load and the target doesn't support it, 1265f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // expand it. 1266bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) { 1267e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = LD->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1268e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 1269f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (LD->getAlignment() < ABIAlignment){ 1270debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 1271debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson DAG, TLI); 1272f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = Result.getOperand(0); 1273f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = Result.getOperand(1); 1274f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Tmp1); 1275f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Tmp2); 1276f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1277f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1278f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1279f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 1280f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Expand: 1281f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // f64 = EXTLOAD f32 should expand to LOAD, FP_EXTEND 128262c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov // f128 = EXTLOAD {f32,f64} too 128362c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov if ((SrcVT == MVT::f32 && (Node->getValueType(0) == MVT::f64 || 128462c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov Node->getValueType(0) == MVT::f128)) || 128562c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov (SrcVT == MVT::f64 && Node->getValueType(0) == MVT::f128)) { 1286ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen SDValue Load = DAG.getLoad(SrcVT, dl, Tmp1, Tmp2, LD->getSrcValue(), 128762c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov LD->getSrcValueOffset(), 128862c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov LD->isVolatile(), LD->getAlignment()); 1289fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::FP_EXTEND, dl, 1290ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Load); 1291f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); // Relegalize new nodes. 1292f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Load.getValue(1)); 1293f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 1294f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1295f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(ExtType != ISD::EXTLOAD &&"EXTLOAD should always be supported!"); 1296f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Turn the unsupported load into an EXTLOAD followed by an explicit 1297f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // zero/sign extend inreg. 1298ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getExtLoad(ISD::EXTLOAD, dl, Node->getValueType(0), 1299f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1, Tmp2, LD->getSrcValue(), 1300f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValueOffset(), SrcVT, 1301f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->isVolatile(), LD->getAlignment()); 1302475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ValRes; 1303f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (ExtType == ISD::SEXTLOAD) 1304ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen ValRes = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 1305ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), 1306f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result, DAG.getValueType(SrcVT)); 1307f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands else 1308ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen ValRes = DAG.getZeroExtendInReg(Result, dl, SrcVT); 1309f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(ValRes); // Relegalize new nodes. 1310f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Result.getValue(1)); // Relegalize new nodes. 1311466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1312466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 13139d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth } 1314f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1315466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Since loads produce two values, make sure to remember that we legalized 1316466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // both of them. 1317475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp1); 1318475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp2); 131999a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Op.getResNo() ? Tmp2 : Tmp1; 132001ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 132101ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 1322f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::STORE: { 13238b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng StoreSDNode *ST = cast<StoreSDNode>(Node); 13248b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = LegalizeOp(ST->getChain()); // Legalize the chain. 13258b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp2 = LegalizeOp(ST->getBasePtr()); // Legalize the pointer. 1326d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman int SVOffset = ST->getSrcValueOffset(); 1327d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman unsigned Alignment = ST->getAlignment(); 1328d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman bool isVolatile = ST->isVolatile(); 13298b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 13308b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng if (!ST->isTruncatingStore()) { 13317ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (SDNode *OptStore = OptimizeFloatStore(ST).getNode()) { 13327ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Result = SDValue(OptStore, 0); 13337ef3d178660b82d1571757e49f44b004d772a116Eli Friedman break; 1334d93d46ee7e0a0e539d42139b85c71b2b8c3968feChris Lattner } 1335fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1336957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman { 13378b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp3 = LegalizeOp(ST->getValue()); 1338fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2, 13398b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng ST->getOffset()); 13408b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 1341e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp3.getValueType(); 13428b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng switch (TLI.getOperationAction(ISD::STORE, VT)) { 1343c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 1344f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1345f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned store and the target doesn't support it, 1346f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1347bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) { 1348e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1349e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 1350f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (ST->getAlignment() < ABIAlignment) 1351e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), 1352e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng DAG, TLI); 1353f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1354f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 13558b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Custom: 13568b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = TLI.LowerOperation(Result, DAG); 1357ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) Result = Tmp1; 13588b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 13598b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Promote: 136083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Unknown legal promote case!"); 1361fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Tmp3 = DAG.getNode(ISD::BIT_CONVERT, dl, 13628b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng TLI.getTypeToPromoteTo(ISD::STORE, VT), Tmp3); 1363ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, 1364d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman ST->getSrcValue(), SVOffset, isVolatile, 1365d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman Alignment); 13668b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 13678b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 13682efce0a589e2a688a1a06b5dc2ed0db32ae79924Chris Lattner break; 1369f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 13708b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } else { 1371957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman Tmp3 = LegalizeOp(ST->getValue()); 13727e857201f387d004571e6058e2ea709163500f38Duncan Sands 1373e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT StVT = ST->getMemoryVT(); 137483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned StWidth = StVT.getSizeInBits(); 13757e857201f387d004571e6058e2ea709163500f38Duncan Sands 137683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (StWidth != StVT.getStoreSizeInBits()) { 13777e857201f387d004571e6058e2ea709163500f38Duncan Sands // Promote to a byte-sized store with upper bits zero if not 13787e857201f387d004571e6058e2ea709163500f38Duncan Sands // storing an integral number of bytes. For example, promote 13797e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i1 X -> TRUNCSTORE:i8 (and X, 1) 138023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = EVT::getIntegerVT(*DAG.getContext(), StVT.getStoreSizeInBits()); 1381ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getZeroExtendInReg(Tmp3, dl, StVT); 1382ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 13837e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset, NVT, isVolatile, Alignment); 13847e857201f387d004571e6058e2ea709163500f38Duncan Sands } else if (StWidth & (StWidth - 1)) { 13857e857201f387d004571e6058e2ea709163500f38Duncan Sands // If not storing a power-of-2 number of bits, expand as two stores. 138683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(StVT.isExtended() && !StVT.isVector() && 13877e857201f387d004571e6058e2ea709163500f38Duncan Sands "Unsupported truncstore!"); 13887e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned RoundWidth = 1 << Log2_32(StWidth); 13897e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(RoundWidth < StWidth); 13907e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned ExtraWidth = StWidth - RoundWidth; 13917e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(ExtraWidth < RoundWidth); 13927e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 13937e857201f387d004571e6058e2ea709163500f38Duncan Sands "Store size not an integral number of bytes!"); 139423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 139523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 1396475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 13977e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned IncrementSize; 13987e857201f387d004571e6058e2ea709163500f38Duncan Sands 13997e857201f387d004571e6058e2ea709163500f38Duncan Sands if (TLI.isLittleEndian()) { 14007e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 X, TRUNCSTORE@+2:i8 (srl X, 16) 14017e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the bottom RoundWidth bits. 1402ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14037e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset, RoundVT, 14047e857201f387d004571e6058e2ea709163500f38Duncan Sands isVolatile, Alignment); 14057e857201f387d004571e6058e2ea709163500f38Duncan Sands 14067e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14077e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1408ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14097e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1410ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 14117e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(RoundWidth, TLI.getShiftAmountTy())); 1412ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), 14137e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset + IncrementSize, ExtraVT, isVolatile, 14147e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 14157e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 14167e857201f387d004571e6058e2ea709163500f38Duncan Sands // Big endian - avoid unaligned stores. 14177e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 (srl X, 8), TRUNCSTORE@+2:i8 X 14187e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the top RoundWidth bits. 1419ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 14207e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy())); 1421ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), 1422ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen SVOffset, RoundVT, isVolatile, Alignment); 14237e857201f387d004571e6058e2ea709163500f38Duncan Sands 14247e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14257e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1426ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14277e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1428ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14297e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset + IncrementSize, ExtraVT, isVolatile, 14307e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 14317e857201f387d004571e6058e2ea709163500f38Duncan Sands } 1432c7029805ef35ce9805931067b841e6af11db382eChris Lattner 14337e857201f387d004571e6058e2ea709163500f38Duncan Sands // The order of the stores doesn't matter. 1434825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Result = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 14357e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 14367e857201f387d004571e6058e2ea709163500f38Duncan Sands if (Tmp1 != ST->getChain() || Tmp3 != ST->getValue() || 14377e857201f387d004571e6058e2ea709163500f38Duncan Sands Tmp2 != ST->getBasePtr()) 14387e857201f387d004571e6058e2ea709163500f38Duncan Sands Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2, 14397e857201f387d004571e6058e2ea709163500f38Duncan Sands ST->getOffset()); 14407e857201f387d004571e6058e2ea709163500f38Duncan Sands 14417e857201f387d004571e6058e2ea709163500f38Duncan Sands switch (TLI.getTruncStoreAction(ST->getValue().getValueType(), StVT)) { 1442c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 14437e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Legal: 14447e857201f387d004571e6058e2ea709163500f38Duncan Sands // If this is an unaligned store and the target doesn't support it, 14457e857201f387d004571e6058e2ea709163500f38Duncan Sands // expand it. 1446bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) { 1447e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1448e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 14497e857201f387d004571e6058e2ea709163500f38Duncan Sands if (ST->getAlignment() < ABIAlignment) 1450e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), 1451e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng DAG, TLI); 14527e857201f387d004571e6058e2ea709163500f38Duncan Sands } 14537e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 14547e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Custom: 14557e857201f387d004571e6058e2ea709163500f38Duncan Sands Result = TLI.LowerOperation(Result, DAG); 14567e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 14577e857201f387d004571e6058e2ea709163500f38Duncan Sands case Expand: 14587e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i16 i32 -> STORE i16 14597e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(isTypeLegal(StVT) && "Do not know how to expand this store!"); 1460ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getNode(ISD::TRUNCATE, dl, StVT, Tmp3); 1461ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 1462ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen SVOffset, isVolatile, Alignment); 14637e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 1464f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 14658b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 14663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 14673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 1468f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 146945b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 14704ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner assert(Result.getValueType() == Op.getValueType() && 14714ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner "Bad legalization!"); 1472fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1473456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner // Make sure that the generated code is itself legal. 1474456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner if (Result != Op) 1475456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner Result = LegalizeOp(Result); 14763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 147745982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 147845982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 147945982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner AddLegalizedOperand(Op, Result); 14803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return Result; 14813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 14823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 14833d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli FriedmanSDValue SelectionDAGLegalize::ExpandExtractFromVectorThroughStack(SDValue Op) { 14843d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Vec = Op.getOperand(0); 14853d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Idx = Op.getOperand(1); 14863d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DebugLoc dl = Op.getDebugLoc(); 14873d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Store the value to a temporary stack slot, then LOAD the returned part. 14883d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue StackPtr = DAG.CreateStackTemporary(Vec.getValueType()); 14893d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Vec, StackPtr, NULL, 0); 14903d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 14913d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Add the offset to the index. 14922a35b1c54ba55a917e01e0043efcf67e20505953Eli Friedman unsigned EltSize = 14932a35b1c54ba55a917e01e0043efcf67e20505953Eli Friedman Vec.getValueType().getVectorElementType().getSizeInBits()/8; 14943d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::MUL, dl, Idx.getValueType(), Idx, 14953d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DAG.getConstant(EltSize, Idx.getValueType())); 14963d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 14973d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman if (Idx.getValueType().bitsGT(TLI.getPointerTy())) 14983d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::TRUNCATE, dl, TLI.getPointerTy(), Idx); 14993d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman else 15003d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::ZERO_EXTEND, dl, TLI.getPointerTy(), Idx); 15013d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15023d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman StackPtr = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, StackPtr); 15033d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 1504c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman if (Op.getValueType().isVector()) 1505c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman return DAG.getLoad(Op.getValueType(), dl, Ch, StackPtr, NULL, 0); 1506c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman else 1507c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman return DAG.getExtLoad(ISD::EXTLOAD, dl, Op.getValueType(), Ch, StackPtr, 1508c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman NULL, 0, Vec.getValueType().getVectorElementType()); 15093d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman} 15103d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15117ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::ExpandVectorBuildThroughStack(SDNode* Node) { 15127ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We can't handle this case efficiently. Allocate a sufficiently 15137ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // aligned object on the stack, store each element into it, then load 15147ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // the result as a vector. 15157ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Create the stack frame object. 1516e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1517e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(0).getValueType(); 15187ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15197ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue FIPtr = DAG.CreateStackTemporary(VT); 1520ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int FI = cast<FrameIndexSDNode>(FIPtr.getNode())->getIndex(); 1521ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng const Value *SV = PseudoSourceValue::getFixedStack(FI); 15227ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15237ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Emit a store of each element to the stack slot. 15247ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SmallVector<SDValue, 8> Stores; 15257ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned TypeByteSize = OpVT.getSizeInBits() / 8; 15267ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Store (in the right endianness) the elements to memory. 15277ef3d178660b82d1571757e49f44b004d772a116Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 15287ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Ignore undef elements. 15297ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (Node->getOperand(i).getOpcode() == ISD::UNDEF) continue; 15307ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15317ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Offset = TypeByteSize*i; 15327ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15337ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Idx = DAG.getConstant(Offset, FIPtr.getValueType()); 15347ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Idx = DAG.getNode(ISD::ADD, dl, FIPtr.getValueType(), FIPtr, Idx); 15357ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15367ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Stores.push_back(DAG.getStore(DAG.getEntryNode(), dl, Node->getOperand(i), 15377ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Idx, SV, Offset)); 15387ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 15397ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15407ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue StoreChain; 15417ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (!Stores.empty()) // Not all undef elements? 1542825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson StoreChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 15437ef3d178660b82d1571757e49f44b004d772a116Eli Friedman &Stores[0], Stores.size()); 15447ef3d178660b82d1571757e49f44b004d772a116Eli Friedman else 15457ef3d178660b82d1571757e49f44b004d772a116Eli Friedman StoreChain = DAG.getEntryNode(); 15467ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15477ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Result is a load from the stack slot. 15487ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getLoad(VT, dl, StoreChain, FIPtr, SV, 0); 15497ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 15507ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15514bc8c718218159fe410462f6e3670e7cb76c0c04Eli FriedmanSDValue SelectionDAGLegalize::ExpandFCOPYSIGN(SDNode* Node) { 15524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = Node->getOperand(0); 15544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = Node->getOperand(1); 1555825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert((Tmp2.getValueType() == MVT::f32 || 1556825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp2.getValueType() == MVT::f64) && 15574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman "Ugly special-cased code!"); 15584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Get the sign bit of the RHS. 15594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignBit; 1560825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson EVT IVT = Tmp2.getValueType() == MVT::f64 ? MVT::i64 : MVT::i32; 15614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (isTypeLegal(IVT)) { 15624bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = DAG.getNode(ISD::BIT_CONVERT, dl, IVT, Tmp2); 15634bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else { 15644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert(isTypeLegal(TLI.getPointerTy()) && 1565825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (TLI.getPointerTy() == MVT::i32 || 1566825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson TLI.getPointerTy() == MVT::i64) && 15674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman "Legal type for load?!"); 15684bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue StackPtr = DAG.CreateStackTemporary(Tmp2.getValueType()); 15694bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue StorePtr = StackPtr, LoadPtr = StackPtr; 15704bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Ch = 15714bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getStore(DAG.getEntryNode(), dl, Tmp2, StorePtr, NULL, 0); 1572825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Tmp2.getValueType() == MVT::f64 && TLI.isLittleEndian()) 15734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LoadPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), 15744bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LoadPtr, DAG.getIntPtrConstant(4)); 15754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = DAG.getExtLoad(ISD::SEXTLOAD, dl, TLI.getPointerTy(), 1576825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ch, LoadPtr, NULL, 0, MVT::i32); 15774bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 15784bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = 15794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getSetCC(dl, TLI.getSetCCResultType(SignBit.getValueType()), 15804bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit, DAG.getConstant(0, SignBit.getValueType()), 15814bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETLT); 15824bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Get the absolute value of the result. 15834bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue AbsVal = DAG.getNode(ISD::FABS, dl, Tmp1.getValueType(), Tmp1); 15844bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Select between the nabs and abs value based on the sign bit of 15854bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // the input. 15864bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getNode(ISD::SELECT, dl, AbsVal.getValueType(), SignBit, 15874bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getNode(ISD::FNEG, dl, AbsVal.getValueType(), AbsVal), 15884bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman AbsVal); 15894bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 15904bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 15914bc8c718218159fe410462f6e3670e7cb76c0c04Eli FriedmanSDValue SelectionDAGLegalize::ExpandDBG_STOPPOINT(SDNode* Node) { 15924bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15934bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DwarfWriter *DW = DAG.getDwarfWriter(); 15944bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman bool useDEBUG_LOC = TLI.isOperationLegalOrCustom(ISD::DEBUG_LOC, 1595825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::Other); 1596825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson bool useLABEL = TLI.isOperationLegalOrCustom(ISD::DBG_LABEL, MVT::Other); 15974bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 15984bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman const DbgStopPointSDNode *DSP = cast<DbgStopPointSDNode>(Node); 1599e4b275610a7a05b7ee4c0378a906a6330e4c4ab0Devang Patel MDNode *CU_Node = DSP->getCompileUnit(); 1600e4b275610a7a05b7ee4c0378a906a6330e4c4ab0Devang Patel if (DW && (useDEBUG_LOC || useLABEL)) { 16014bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16024bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Line = DSP->getLine(); 16034bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Col = DSP->getColumn(); 16044bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16054bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (OptLevel == CodeGenOpt::None) { 16064bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // A bit self-referential to have DebugLoc on Debug_Loc nodes, but it 16074bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // won't hurt anything. 16084bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (useDEBUG_LOC) { 1609825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::DEBUG_LOC, dl, MVT::Other, Node->getOperand(0), 1610825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson DAG.getConstant(Line, MVT::i32), 1611825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson DAG.getConstant(Col, MVT::i32), 16123d910835fc5da1ccddefd7cc5978ffe8c903cbf0Devang Patel DAG.getSrcValue(CU_Node)); 16134bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else { 16143d910835fc5da1ccddefd7cc5978ffe8c903cbf0Devang Patel unsigned ID = DW->RecordSourceLine(Line, Col, CU_Node); 16154bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getLabel(ISD::DBG_LABEL, dl, Node->getOperand(0), ID); 16164bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16174bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16184bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16194bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return Node->getOperand(0); 16204bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16224bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedmanvoid SelectionDAGLegalize::ExpandDYNAMIC_STACKALLOC(SDNode* Node, 16234bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results) { 16244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned SPReg = TLI.getStackPointerRegisterToSaveRestore(); 16254bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert(SPReg && "Target cannot require DYNAMIC_STACKALLOC expansion and" 16264bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman " not tell us which reg is the stack pointer!"); 16274bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 1628e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 16294bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = SDValue(Node, 0); 16304bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = SDValue(Node, 1); 16314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp3 = Node->getOperand(2); 16324bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Tmp1.getOperand(0); 16334bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Chain the dynamic stack allocation so that it doesn't modify the stack 16354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // pointer when other instructions are using the stack. 16364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(0, true)); 16374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Size = Tmp2.getOperand(1); 16394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SP = DAG.getCopyFromReg(Chain, dl, SPReg, VT); 16404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = SP.getValue(1); 16414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Align = cast<ConstantSDNode>(Tmp3)->getZExtValue(); 16424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned StackAlign = 16434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getTargetMachine().getFrameInfo()->getStackAlignment(); 16444bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Align > StackAlign) 16454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SP = DAG.getNode(ISD::AND, dl, VT, SP, 16464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getConstant(-(uint64_t)Align, VT)); 16474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, SP, Size); // Value 16484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCopyToReg(Chain, dl, SPReg, Tmp1); // Output chain 16494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp2 = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(0, true), 16514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getIntPtrConstant(0, true), SDValue()); 16524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 16544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp2); 16554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16577f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// LegalizeSetCCCondCode - Legalize a SETCC with given LHS and RHS and 1658f77fc92b03efe455008474894d217282e2a03cadDan Gohman/// condition code CC on the current target. This routine expands SETCC with 16597f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// illegal condition code into AND / OR of multiple SETCC values. 1660e50ed30282bb5b4a9ed952580523f2dda16215acOwen Andersonvoid SelectionDAGLegalize::LegalizeSetCCCondCode(EVT VT, 16617f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng SDValue &LHS, SDValue &RHS, 1662bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue &CC, 1663bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl) { 1664e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = LHS.getValueType(); 16657f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CCCode = cast<CondCodeSDNode>(CC)->get(); 16667f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (TLI.getCondCodeAction(CCCode, OpVT)) { 1667c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown condition code action!"); 16687f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Legal: 16697f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // Nothing to do. 16707f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 16717f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Expand: { 16727f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CC1 = ISD::SETCC_INVALID, CC2 = ISD::SETCC_INVALID; 16737f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng unsigned Opc = 0; 16747f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (CCCode) { 1675c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Don't know how to expand this condition!"); 1676e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETO; Opc = ISD::AND; break; 1677e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGT: CC1 = ISD::SETGT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1678e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGE: CC1 = ISD::SETGE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1679e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLT: CC1 = ISD::SETLT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1680e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLE: CC1 = ISD::SETLE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1681e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETONE: CC1 = ISD::SETNE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1682e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1683e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGT: CC1 = ISD::SETGT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1684e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGE: CC1 = ISD::SETGE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1685e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULT: CC1 = ISD::SETLT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1686e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULE: CC1 = ISD::SETLE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1687e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUNE: CC1 = ISD::SETNE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 16887f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // FIXME: Implement more expansions. 16897f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 16907f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 1691bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC1 = DAG.getSetCC(dl, VT, LHS, RHS, CC1); 1692bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC2 = DAG.getSetCC(dl, VT, LHS, RHS, CC2); 1693bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen LHS = DAG.getNode(Opc, dl, VT, SetCC1, SetCC2); 16947f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng RHS = SDValue(); 16957f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng CC = SDValue(); 16967f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 16977f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 16987f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 16997f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng} 17007f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 17011401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// EmitStackConvert - Emit a store/load combination to the stack. This stores 17021401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// SrcOp to a stack slot of type SlotVT, truncating it if needed. It then does 17031401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// a load from the stack slot to DestVT, extending it if needed. 17041401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// The resultant code need not be legal. 1705475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::EmitStackConvert(SDValue SrcOp, 1706e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SlotVT, 1707e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 17088a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 170935481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Create the stack frame object. 1710ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson unsigned SrcAlign = 1711ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getTargetData()->getPrefTypeAlignment(SrcOp.getValueType(). 171223b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson getTypeForEVT(*DAG.getContext())); 1713475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FIPtr = DAG.CreateStackTemporary(SlotVT, SrcAlign); 1714fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1715ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(FIPtr); 1716ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = StackPtrFI->getIndex(); 1717ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng const Value *SV = PseudoSourceValue::getFixedStack(SPFI); 1718ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 171983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SrcSize = SrcOp.getValueType().getSizeInBits(); 172083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SlotSize = SlotVT.getSizeInBits(); 172183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned DestSize = DestVT.getSizeInBits(); 1722ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson unsigned DestAlign = 1723ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng TLI.getTargetData()->getPrefTypeAlignment(DestVT.getTypeForEVT(*DAG.getContext())); 1724fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17251401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // Emit a store to the stack slot. Use a truncstore if the input value is 17261401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // later than DestVT. 1727475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store; 1728ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 17291401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SrcSize > SlotSize) 17308a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getTruncStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 173115b3830bcda4f9958abf1c65e6e1c64c5cbb484dDan Gohman SV, 0, SlotVT, false, SrcAlign); 17321401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner else { 17331401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SrcSize == SlotSize && "Invalid store"); 17348a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 173515b3830bcda4f9958abf1c65e6e1c64c5cbb484dDan Gohman SV, 0, false, SrcAlign); 17361401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner } 1737fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 173835481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Result is a load from the stack slot. 17391401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SlotSize == DestSize) 17408a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(DestVT, dl, Store, FIPtr, SV, 0, false, DestAlign); 1741fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17421401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SlotSize < DestSize && "Unknown extension!"); 17438a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, Store, FIPtr, SV, 0, SlotVT, 1744364d73ddab43b699ab90240f11b7a2eb5cf69bd8Mon P Wang false, DestAlign); 174535481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner} 174635481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner 1747475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandSCALAR_TO_VECTOR(SDNode *Node) { 17488a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl = Node->getDebugLoc(); 17494352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // Create a vector sized/aligned stack slot, store the value to element #0, 17504352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // then load the whole vector back out. 1751475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(Node->getValueType(0)); 175269de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 1753ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(StackPtr); 1754ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = StackPtrFI->getIndex(); 1755ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 1756b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands SDValue Ch = DAG.getTruncStore(DAG.getEntryNode(), dl, Node->getOperand(0), 1757b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands StackPtr, 1758ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng PseudoSourceValue::getFixedStack(SPFI), 0, 1759b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands Node->getValueType(0).getVectorElementType()); 17608a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(Node->getValueType(0), dl, Ch, StackPtr, 1761ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng PseudoSourceValue::getFixedStack(SPFI), 0); 17624352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 17634352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 17644352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 1765ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner/// ExpandBUILD_VECTOR - Expand a BUILD_VECTOR node on targets that don't 176607a96765daedf180a7102d39fe56c499878312b7Dan Gohman/// support the operation, but do support the resultant vector type. 1767475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandBUILD_VECTOR(SDNode *Node) { 176826cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson unsigned NumElems = Node->getNumOperands(); 17697a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Value1, Value2; 177026cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson DebugLoc dl = Node->getDebugLoc(); 1771e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1772e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(0).getValueType(); 1773e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 1774fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1775fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // If the only non-undef value is the low element, turn this into a 177687100e0b83b808757bf44dabecd1d1048255d1adChris Lattner // SCALAR_TO_VECTOR node. If this is { X, X, X, X }, determine X. 1777ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner bool isOnlyLowElement = true; 17787a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman bool MoreThanTwoValues = false; 17792eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner bool isConstant = true; 17807a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 1781475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue V = Node->getOperand(i); 17827a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 17837a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 17847a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (i > 0) 1785ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner isOnlyLowElement = false; 17867a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!isa<ConstantFPSDNode>(V) && !isa<ConstantSDNode>(V)) 17872eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner isConstant = false; 17887a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 17897a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) { 17907a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value1 = V; 17917a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (!Value2.getNode()) { 17927a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V != Value1) 17937a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value2 = V; 17947a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (V != Value1 && V != Value2) { 17957a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman MoreThanTwoValues = true; 17967a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 1797ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1798fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17997a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) 18007a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getUNDEF(VT); 18017a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 18027a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (isOnlyLowElement) 180326cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson return DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Node->getOperand(0)); 1804fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18052eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // If all elements are constants, create a load from the constant pool. 1806ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner if (isConstant) { 1807ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner std::vector<Constant*> CV; 1808033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng for (unsigned i = 0, e = NumElems; i != e; ++i) { 1809fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel if (ConstantFPSDNode *V = 1810ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner dyn_cast<ConstantFPSDNode>(Node->getOperand(i))) { 18114fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman CV.push_back(const_cast<ConstantFP *>(V->getConstantFPValue())); 1812fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel } else if (ConstantSDNode *V = 1813ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson dyn_cast<ConstantSDNode>(Node->getOperand(i))) { 18144fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman CV.push_back(const_cast<ConstantInt *>(V->getConstantIntValue())); 1815ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } else { 1816ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner assert(Node->getOperand(i).getOpcode() == ISD::UNDEF); 181723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *OpNTy = OpVT.getTypeForEVT(*DAG.getContext()); 18189e9a0d5fc26878e51a58a8b57900fcbf952c2691Owen Anderson CV.push_back(UndefValue::get(OpNTy)); 1819ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1820ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1821af7ec975870f92245f1f1484ac80a1e2db6a0afaOwen Anderson Constant *CP = ConstantVector::get(CV); 1822475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(CP, TLI.getPointerTy()); 18231606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 18248a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(VT, dl, DAG.getEntryNode(), CPIdx, 182550284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, 182650284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman false, Alignment); 1827ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1828fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18297a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!MoreThanTwoValues) { 18307a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SmallVector<int, 8> ShuffleVec(NumElems, -1); 18317a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 18327a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue V = Node->getOperand(i); 18337a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 18347a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 18357a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman ShuffleVec[i] = V == Value1 ? 0 : NumElems; 18367a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 18377a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (TLI.isShuffleMaskLegal(ShuffleVec, Node->getValueType(0))) { 18382eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Get the splatted value into the low element of a vector register. 18397a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec1 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value1); 18407a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec2; 18417a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (Value2.getNode()) 18427a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value2); 18437a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman else 18447a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getUNDEF(VT); 1845fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18462eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Return shuffle(LowValVec, undef, <0,0,0,0>) 18477a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getVectorShuffle(VT, dl, Vec1, Vec2, ShuffleVec.data()); 1848033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1849033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1850fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18517ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, we can't handle this case efficiently. 18527ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return ExpandVectorBuildThroughStack(Node); 1853ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner} 1854ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner 185577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// ExpandLibCall - Expand a node into a call to a libcall. If the result value 185677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// does not fit into a register, return the lo part and set the hi part to the 185777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// by-reg argument. If it does fit into a single register, return the result 185877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// and leave the Hi part unset. 1859475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, 186047b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman bool isSigned) { 18616831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "Cannot overlap legalization of calls!"); 1862fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // The input chain to this libcall is the entry node of the function. 18636831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalizing the call will automatically add the previous call to the 18646831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // dependence. 1865475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InChain = DAG.getEntryNode(); 1866fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 186777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 186847857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer TargetLowering::ArgListEntry Entry; 186977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 1870e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ArgVT = Node->getOperand(i).getValueType(); 187123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext()); 1872fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Entry.Node = Node->getOperand(i); Entry.Ty = ArgTy; 1873d0b82b301d700217a716526f9329bb031e0d6578Anton Korobeynikov Entry.isSExt = isSigned; 187400fee65fd21f9615d1a604b8b7d42cd16a3f6b47Duncan Sands Entry.isZExt = !isSigned; 187547857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer Args.push_back(Entry); 187677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 1877056292fd738924f3f7703725d8f630983794b5a5Bill Wendling SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 18780c39719bfc7d0b3e61fbd55e1115184a1d5f6ae7Mon P Wang TLI.getPointerTy()); 1879edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 18800d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Splice the libcall in wherever FindInputOutputChains tells us to. 188123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext()); 1882ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson std::pair<SDValue, SDValue> CallInfo = 188386098bd6a63d2cdf0c9be9ef3151bd2728281fd7Dale Johannesen TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false, 188472977a45a8ad9d9524c9b49399e89fb9a3a676edAnton Korobeynikov 0, TLI.getLibcallCallingConv(LC), false, 188598ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 188698ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman Callee, Args, DAG, 18877d2ad624fa749a6d3edac0d94e9c107989c16304Dale Johannesen Node->getDebugLoc()); 18880d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 18896831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call sequence, starting with the chain. This will advance 18906831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // the LastCALLSEQ_END to the legalized version of the CALLSEQ_END node that 18916831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // was added by LowerCallTo (guaranteeing proper serialization of calls). 18926831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(CallInfo.second); 189374807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman return CallInfo.first; 189422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 189522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 1896f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandFPLibCall(SDNode* Node, 1897f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F32, 1898f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, 1899f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F80, 1900f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128) { 1901f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 1902825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 1903c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unexpected request for libcall!"); 1904825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f32: LC = Call_F32; break; 1905825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f64: LC = Call_F64; break; 1906825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f80: LC = Call_F80; break; 1907825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::ppcf128: LC = Call_PPCF128; break; 1908f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 1909f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, false); 1910f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 1911f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 1912f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandIntLibCall(SDNode* Node, bool isSigned, 1913f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I16, 1914f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I32, 1915f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I64, 1916f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128) { 1917f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 1918825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 1919c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unexpected request for libcall!"); 1920825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i16: LC = Call_I16; break; 1921825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i32: LC = Call_I32; break; 1922825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i64: LC = Call_I64; break; 1923825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i128: LC = Call_I128; break; 1924f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 1925f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, isSigned); 1926f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 1927f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 192822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandLegalINT_TO_FP - This function is responsible for legalizing a 192922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// INT_TO_FP operation of the specified operand when the target requests that 193022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we expand it. At this point, we know that the result and operand types are 193122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target. 1932475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLegalINT_TO_FP(bool isSigned, 1933475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0, 1934e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 1935af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 1936825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Op0.getValueType() == MVT::i32) { 193722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // simple 32-bit [signed|unsigned] integer to float/double expansion 1938fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 193923594d4537fb88a963c6d6993af5027eac9bfbacChris Lattner // Get the stack frame index of a 8 byte buffer. 1940825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue StackSlot = DAG.CreateStackTemporary(MVT::f64); 1941fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 194222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // word offset constant for Hi/Lo address computation 1943475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue WordOff = DAG.getConstant(sizeof(int), TLI.getPointerTy()); 194422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // set up Hi and Lo (into buffer) address based on endian 1945475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = StackSlot; 1946fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Lo = DAG.getNode(ISD::ADD, dl, 1947ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getPointerTy(), StackSlot, WordOff); 1948408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner if (TLI.isLittleEndian()) 1949408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner std::swap(Hi, Lo); 1950fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 195122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // if signed map to unsigned space 1952475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0Mapped; 195322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) { 195422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // constant used to invert sign bit (signed to unsigned mapping) 1955825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue SignBit = DAG.getConstant(0x80000000u, MVT::i32); 1956825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Op0Mapped = DAG.getNode(ISD::XOR, dl, MVT::i32, Op0, SignBit); 195722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } else { 195822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Op0Mapped = Op0; 195922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 196022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the lo of the constructed double - based on integer input 1961af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Store1 = DAG.getStore(DAG.getEntryNode(), dl, 1962ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson Op0Mapped, Lo, NULL, 0); 196322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // initial hi portion of constructed double 1964825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue InitialHi = DAG.getConstant(0x43300000u, MVT::i32); 196522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the hi of the constructed double - biased exponent 1966af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Store2=DAG.getStore(Store1, dl, InitialHi, Hi, NULL, 0); 196722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // load the constructed double 1968825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Load = DAG.getLoad(MVT::f64, dl, Store2, StackSlot, NULL, 0); 196922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // FP constant to bias correct the final result 1970475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Bias = DAG.getConstantFP(isSigned ? 1971ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000080000000ULL) : 1972ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000000000000ULL), 1973825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::f64); 197422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // subtract the bias 1975825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Sub = DAG.getNode(ISD::FSUB, dl, MVT::f64, Load, Bias); 197622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // final result 1977475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result; 197822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // handle final rounding 1979825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (DestVT == MVT::f64) { 198022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // do nothing 198122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Result = Sub; 1982825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsLT(MVT::f64)) { 1983af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_ROUND, dl, DestVT, Sub, 19840bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(0)); 1985825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsGT(MVT::f64)) { 1986af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, DestVT, Sub); 198722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 198822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Result; 198922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 199022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner assert(!isSigned && "Legalize cannot Expand SINT_TO_FP for i64 yet"); 1991af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Tmp1 = DAG.getNode(ISD::SINT_TO_FP, dl, DestVT, Op0); 199222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 1993af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue SignSet = DAG.getSetCC(dl, TLI.getSetCCResultType(Op0.getValueType()), 19945480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands Op0, DAG.getConstant(0, Op0.getValueType()), 19955480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands ISD::SETLT); 1996475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Zero = DAG.getIntPtrConstant(0), Four = DAG.getIntPtrConstant(4); 1997af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue CstOffset = DAG.getNode(ISD::SELECT, dl, Zero.getValueType(), 199822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner SignSet, Four, Zero); 199922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 200022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the sign bit of the integer is set, the large number will be treated 200122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // as a negative number. To counteract this, the dynamic code adds an 200222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // offset depending on the data type. 200322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner uint64_t FF; 2004825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Op0.getValueType().getSimpleVT().SimpleTy) { 2005c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unsupported integer type!"); 2006825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i8 : FF = 0x43800000ULL; break; // 2^8 (as a float) 2007825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i16: FF = 0x47800000ULL; break; // 2^16 (as a float) 2008825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i32: FF = 0x4F800000ULL; break; // 2^32 (as a float) 2009825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i64: FF = 0x5F800000ULL; break; // 2^64 (as a float) 201022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 201122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (TLI.isLittleEndian()) FF <<= 32; 20121d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson Constant *FudgeFactor = ConstantInt::get( 20131d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson Type::getInt64Ty(*DAG.getContext()), FF); 201422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2015475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(FudgeFactor, TLI.getPointerTy()); 20161606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 2017af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen CPIdx = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), CPIdx, CstOffset); 201887a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman Alignment = std::min(Alignment, 4u); 2019475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FudgeInReg; 2020825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (DestVT == MVT::f32) 2021825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson FudgeInReg = DAG.getLoad(MVT::f32, dl, DAG.getEntryNode(), CPIdx, 202250284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, 202350284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman false, Alignment); 202422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner else { 202569de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman FudgeInReg = 2026af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen LegalizeOp(DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, 202769de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman DAG.getEntryNode(), CPIdx, 20283069b8743769527ce7af6cfb6591a2f0fc2faee4Dan Gohman PseudoSourceValue::getConstantPool(), 0, 2029825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::f32, false, Alignment)); 203022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 203122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2032af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(ISD::FADD, dl, DestVT, Tmp1, FudgeInReg); 203322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 203422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 203522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalINT_TO_FP - This function is responsible for legalizing a 203622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// *INT_TO_FP operation of the specified operand when the target requests that 203722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 203822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal UINT_TO_FP or SINT_TO_FP 203922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that takes a larger input. 2040475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalINT_TO_FP(SDValue LegalOp, 2041e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2042af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2043af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 204422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate *INT_TO_FP operation to use. 2045e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewInTy = LegalOp.getValueType(); 204622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 204722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 204822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 204922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 205022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2051825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewInTy = (MVT::SimpleValueType)(NewInTy.getSimpleVT().SimpleTy+1); 205283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewInTy.isInteger() && "Ran out of possibilities!"); 205322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 205422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports SINT_TO_FP of this type, use it. 20553be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::SINT_TO_FP, NewInTy)) { 20563be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::SINT_TO_FP; 20573be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 205822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 205922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) continue; 206022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 206122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports UINT_TO_FP of this type, use it. 20623be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::UINT_TO_FP, NewInTy)) { 20633be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::UINT_TO_FP; 20643be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 206522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 206622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 206722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 206822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 206922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 207022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Okay, we found the operation and type to use. Zero extend our input to the 207122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // desired type then run the operation on it. 2072af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(OpToUse, dl, DestVT, 207322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, 2074af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen dl, NewInTy, LegalOp)); 207577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 207677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 207722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalFP_TO_INT - This function is responsible for legalizing a 207822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// FP_TO_*INT operation of the specified operand when the target requests that 207922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 208022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal FP_TO_UINT or FP_TO_SINT 208122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that returns a larger result. 2082475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalFP_TO_INT(SDValue LegalOp, 2083e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2084af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2085af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 208622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate FP_TO*INT operation to use. 2087e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewOutTy = DestVT; 20889c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 208922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 2090e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 209122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 209222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2093825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewOutTy = (MVT::SimpleValueType)(NewOutTy.getSimpleVT().SimpleTy+1); 209483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewOutTy.isInteger() && "Ran out of possibilities!"); 209566de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner 20963be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_SINT, NewOutTy)) { 209722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_SINT; 209822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 209922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 2100e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 21013be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_UINT, NewOutTy)) { 210222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_UINT; 210322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 2104e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner } 21050d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 210622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 2107a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner } 2108a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner 2109fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 211027a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Okay, we found the operation and type to use. 2111af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Operation = DAG.getNode(OpToUse, dl, NewOutTy, LegalOp); 2112126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 211327a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Truncate the result of the extended FP_TO_*INT operation to the desired 211427a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // size. 2115af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(ISD::TRUNCATE, dl, DestVT, Operation); 211622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 211713689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner 211822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBSWAP - Open code the operations for BSWAP of the specified operation. 211922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 21208a782a2a8c2f0c82f292d03a3f707232b0bae27bDale JohannesenSDValue SelectionDAGLegalize::ExpandBSWAP(SDValue Op, DebugLoc dl) { 2121e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2122e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SHVT = TLI.getShiftAmountTy(); 2123475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4, Tmp5, Tmp6, Tmp7, Tmp8; 2124825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (VT.getSimpleVT().SimpleTy) { 2125c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unhandled Expand type in BSWAP!"); 2126825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i16: 21278a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21288a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21298a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp1, Tmp2); 2130825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i32: 21318a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21328a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21338a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21348a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21358a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(0xFF0000, VT)); 21368a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(0xFF00, VT)); 21378a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 21388a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 21398a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 2140825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i64: 21418a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(56, SHVT)); 21428a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(40, SHVT)); 21438a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21448a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21458a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21468a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21478a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(40, SHVT)); 21488a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(56, SHVT)); 21498a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::AND, dl, VT, Tmp7, DAG.getConstant(255ULL<<48, VT)); 21508a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::AND, dl, VT, Tmp6, DAG.getConstant(255ULL<<40, VT)); 21518a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::AND, dl, VT, Tmp5, DAG.getConstant(255ULL<<32, VT)); 21528a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::AND, dl, VT, Tmp4, DAG.getConstant(255ULL<<24, VT)); 21538a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(255ULL<<16, VT)); 21548a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(255ULL<<8 , VT)); 21558a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp7); 21568a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::OR, dl, VT, Tmp6, Tmp5); 21578a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 21588a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 21598a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp6); 21608a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 21618a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp4); 21620d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner } 216377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 2164edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 216522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBitCount - Expand the specified bitcount instruction into operations. 216622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 2167fdc40a0a696c658d550d894ea03772e5f8af2c94Scott MichelSDValue SelectionDAGLegalize::ExpandBitCount(unsigned Opc, SDValue Op, 21688a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 216922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner switch (Opc) { 2170c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Cannot expand this yet!"); 217122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTPOP: { 217222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner static const uint64_t mask[6] = { 217322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x5555555555555555ULL, 0x3333333333333333ULL, 217422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x0F0F0F0F0F0F0F0FULL, 0x00FF00FF00FF00FFULL, 217522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x0000FFFF0000FFFFULL, 0x00000000FFFFFFFFULL 217622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner }; 2177e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2178e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ShVT = TLI.getShiftAmountTy(); 217983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 218022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 218122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner //x = (x & mask[i][len/8]) + (x >> (1 << i) & mask[i][len/8]) 2182b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands unsigned EltSize = VT.isVector() ? 2183b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands VT.getVectorElementType().getSizeInBits() : len; 2184b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands SDValue Tmp2 = DAG.getConstant(APInt(EltSize, mask[i]), VT); 2185475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2186fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::ADD, dl, VT, 2187e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::AND, dl, VT, Op, Tmp2), 21888a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::AND, dl, VT, 21898a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3), 21908a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2)); 219122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 219222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Op; 219322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 219422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTLZ: { 219522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we do this: 219622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 1); 219722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 2); 219822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // ... 219922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>16); 220022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>32); // for 64-bit input 220122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // return popcount(~x); 220222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // 220322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // but see also: http://www.hackersdelight.org/HDcode/nlz.cc 2204e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2205e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ShVT = TLI.getShiftAmountTy(); 220683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 220722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 2208475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2209fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::OR, dl, VT, Op, 2210e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3)); 221122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 22128a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Op = DAG.getNOT(dl, Op, VT); 22138a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Op); 221422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 221522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTTZ: { 221622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we use: { return popcount(~x & (x - 1)); } 221722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // unless the target has ctlz but not ctpop, in which case we use: 221822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // { return 32 - nlz(~x & (x-1)); } 221922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // see also http://www.hackersdelight.org/HDcode/ntz.cc 2220e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 22218a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue Tmp3 = DAG.getNode(ISD::AND, dl, VT, 22228a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNOT(dl, Op, VT), 22238a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SUB, dl, VT, Op, 22247581bfa2757a3149c6d17c0fe592e5c3808aa843Bill Wendling DAG.getConstant(1, VT))); 222522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If ISD::CTLZ is legal and CTPOP isn't, then do that instead. 2226f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman if (!TLI.isOperationLegalOrCustom(ISD::CTPOP, VT) && 2227f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.isOperationLegalOrCustom(ISD::CTLZ, VT)) 22288a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::SUB, dl, VT, 222983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(VT.getSizeInBits(), VT), 22308a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::CTLZ, dl, VT, Tmp3)); 22318a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Tmp3); 223222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 223322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 223422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 2235e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 22368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::ExpandNode(SDNode *Node, 22378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 22388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 2239bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 22408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 22418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 22428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 22438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 22448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandBitCount(Node->getOpcode(), Node->getOperand(0), dl); 22458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 22468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: 22488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(ExpandBSWAP(Node->getOperand(0), dl)); 22498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 22518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 22528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 22538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, Node->getValueType(0))); 22548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 22568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(1, Node->getValueType(0))); 22578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 22598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::DBG_LABEL: 22608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_LABEL: 22618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::PREFETCH: 22628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MEMBARRIER: 22638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAEND: 22648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(0)); 22658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::DBG_STOPPOINT: 22674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(ExpandDBG_STOPPOINT(Node)); 22684bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 22694bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::DYNAMIC_STACKALLOC: 22704bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ExpandDYNAMIC_STACKALLOC(Node, Results); 22714bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 22728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 22738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0; i < Node->getNumValues(); i++) 22748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(i)); 22758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UNDEF: { 2277e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 22788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (VT.isInteger()) 22798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, VT)); 22808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else if (VT.isFloatingPoint()) 22818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstantFP(0, VT)); 22828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 2283c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Unknown value type!"); 22848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 22868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAP: { 22878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // If this operation is not supported, lower it to 'abort()' call 22888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::ArgListTy Args; 22898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman std::pair<SDValue, SDValue> CallResult = 22901d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson TLI.LowerCallTo(Node->getOperand(0), Type::getVoidTy(*DAG.getContext()), 22916b61cd185eeb90bec93f042535594132ae1f0f41Tilmann Scheller false, false, false, false, 0, CallingConv::C, false, 229298ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 22938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getExternalSymbol("abort", TLI.getPointerTy()), 22948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Args, DAG, dl); 22958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(CallResult.second); 22968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 22988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND: 22998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BIT_CONVERT: 23008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), Node->getValueType(0), 23018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 23028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_EXTEND: 23058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), 23068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType(), 23078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 23088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 23118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: we could fall back on load/store here too for targets without 23128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // SAR. However, it is doubtful that any exist. 2313e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 23148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman unsigned BitsDiff = Node->getValueType(0).getSizeInBits() - 23158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ExtraVT.getSizeInBits(); 23168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SDValue ShiftCst = DAG.getConstant(BitsDiff, TLI.getShiftAmountTy()); 23178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SHL, dl, Node->getValueType(0), 23188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), ShiftCst); 23198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRA, dl, Node->getValueType(0), Tmp1, ShiftCst); 23208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: { 23248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // The only way we can lower this is to turn it into a TRUNCSTORE, 23258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // EXTLOAD pair, targetting a temporary location (a stack slot). 23268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 23278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: there is a choice here between constantly creating new stack 23288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // slots and always reusing the same one. We currently always create 23298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // new ones, as reuse may inhibit scheduling. 2330e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 23318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), ExtraVT, 23328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 23338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 23378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 23388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandLegalINT_TO_FP(Node->getOpcode() == ISD::SINT_TO_FP, 23398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), Node->getValueType(0), dl); 23408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: { 23438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SDValue True, False; 2344e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getOperand(0).getValueType(); 2345e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = Node->getValueType(0); 23468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const uint64_t zero[] = {0, 0}; 23478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APFloat apf = APFloat(APInt(VT.getSizeInBits(), 2, zero)); 23488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APInt x = APInt::getSignBit(NVT.getSizeInBits()); 23498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman (void)apf.convertFromAPInt(x, false, APFloat::rmNearestTiesToEven); 23508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getConstantFP(apf, VT); 23518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), 23528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), 23538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, ISD::SETLT); 23548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman True = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, Node->getOperand(0)); 23558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman False = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, 23568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getNode(ISD::FSUB, dl, VT, 23578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), Tmp1)); 23588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman False = DAG.getNode(ISD::XOR, dl, NVT, False, 23598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(x, NVT)); 23608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, True, False); 23618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 2364509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VAARG: { 2365509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman const Value *V = cast<SrcValueSDNode>(Node->getOperand(2))->getValue(); 2366e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2367509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2368509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 2369509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SDValue VAList = DAG.getLoad(TLI.getPointerTy(), dl, Tmp1, Tmp2, V, 0); 2370509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Increment the pointer, VAList, to the next vaarg 2371509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList, 2372509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(TLI.getTargetData()-> 237323b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson getTypeAllocSize(VT.getTypeForEVT(*DAG.getContext())), 2374509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TLI.getPointerTy())); 2375509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Store the incremented VAList to the legalized pointer 2376509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getStore(VAList.getValue(1), dl, Tmp3, Tmp2, V, 0); 2377509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Load the actual argument out of the pointer VAList 2378509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(DAG.getLoad(VT, dl, Tmp3, VAList, NULL, 0)); 2379509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Results[0].getValue(1)); 2380509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2381509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 23828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VACOPY: { 23838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This defaults to loading a pointer from the input and storing it to the 23848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // output, returning the chain. 23858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VD = cast<SrcValueSDNode>(Node->getOperand(3))->getValue(); 23868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VS = cast<SrcValueSDNode>(Node->getOperand(4))->getValue(); 23878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getLoad(TLI.getPointerTy(), dl, Node->getOperand(0), 23888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(2), VS, 0); 23898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getStore(Tmp1.getValue(1), dl, Tmp1, Node->getOperand(1), VD, 0); 23908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 23948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOperand(0).getValueType().getVectorNumElements() == 1) 23958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This must be an access of the only element. Return it. 23968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, Node->getValueType(0), 23978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 23988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 23998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandExtractFromVectorThroughStack(SDValue(Node, 0)); 24008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 24018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_SUBVECTOR: 24038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(ExpandExtractFromVectorThroughStack(SDValue(Node, 0))); 24048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 2405509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::CONCAT_VECTORS: { 24065257106c4d396b5d932f7b282c3ba255c4605195Eli Friedman Results.push_back(ExpandVectorBuildThroughStack(Node)); 2407509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2408509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 24098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SCALAR_TO_VECTOR: 24108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(ExpandSCALAR_TO_VECTOR(Node)); 24118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24123f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INSERT_VECTOR_ELT: 24133f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(ExpandINSERT_VECTOR_ELT(Node->getOperand(0), 24143f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getOperand(1), 24153f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getOperand(2), dl)); 24163f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 2417509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 2418509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 2419509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 2420509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 2421e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2422e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 2423509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned NumElems = VT.getVectorNumElements(); 2424509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<SDValue, 8> Ops; 2425509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman for (unsigned i = 0; i != NumElems; ++i) { 2426509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Mask[i] < 0) { 2427509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getUNDEF(EltVT)); 2428509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman continue; 2429509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2430509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned Idx = Mask[i]; 2431509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Idx < NumElems) 2432509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2433509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Node->getOperand(0), 2434509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(Idx))); 2435509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 2436509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2437509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Node->getOperand(1), 2438509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(Idx - NumElems))); 2439509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2440509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &Ops[0], Ops.size()); 2441509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 2442509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2443509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 24448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: { 2445e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpTy = Node->getOperand(0).getValueType(); 24468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (cast<ConstantSDNode>(Node->getOperand(1))->getZExtValue()) { 24478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 1 -> Hi 24488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRL, dl, OpTy, Node->getOperand(0), 24498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OpTy.getSizeInBits()/2, 24508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TLI.getShiftAmountTy())); 24518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), Tmp1); 24528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 24538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 0 -> Lo 24548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), 24558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 24568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 24588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24603f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKSAVE: 24613f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // Expand to CopyFromReg if the target set 24623f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // StackPointerRegisterToSaveRestore. 24633f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 24643f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, SP, 24653f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getValueType(0))); 24663f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Results[0].getValue(1)); 24673f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } else { 24683f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(DAG.getUNDEF(Node->getValueType(0))); 24693f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Node->getOperand(0)); 24703f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 24713f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 24723f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKRESTORE: 24733f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // Expand to CopyToReg if the target set 24743f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // StackPointerRegisterToSaveRestore. 24753f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 24763f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(DAG.getCopyToReg(Node->getOperand(0), dl, SP, 24773f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getOperand(1))); 24783f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } else { 24793f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Node->getOperand(0)); 24803f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 24813f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 24824bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::FCOPYSIGN: 24834bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(ExpandFCOPYSIGN(Node)); 24844bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 2485f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEG: 2486f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FNEG(X) -> Y = SUB -0.0, X 2487f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getConstantFP(-0.0, Node->getValueType(0)); 2488f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(ISD::FSUB, dl, Node->getValueType(0), Tmp1, 2489f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Node->getOperand(0)); 2490f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2491f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2492f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FABS: { 2493f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FABS(X) -> Y = (X >u 0.0) ? X : fneg(X). 2494e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2495f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = Node->getOperand(0); 2496f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp2 = DAG.getConstantFP(0.0, VT); 2497f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(Tmp1.getValueType()), 2498f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1, Tmp2, ISD::SETUGT); 2499f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp3 = DAG.getNode(ISD::FNEG, dl, VT, Tmp1); 2500f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, VT, Tmp2, Tmp1, Tmp3); 2501f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2502f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2503f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 2504f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSQRT: 2505f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::SQRT_F32, RTLIB::SQRT_F64, 2506f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::SQRT_F80, RTLIB::SQRT_PPCF128)); 2507f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2508f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSIN: 2509f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::SIN_F32, RTLIB::SIN_F64, 2510f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::SIN_F80, RTLIB::SIN_PPCF128)); 2511f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2512f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCOS: 2513f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::COS_F32, RTLIB::COS_F64, 2514f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::COS_F80, RTLIB::COS_PPCF128)); 2515f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2516f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG: 2517f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG_F32, RTLIB::LOG_F64, 2518f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::LOG_F80, RTLIB::LOG_PPCF128)); 2519f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2520f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG2: 2521f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG2_F32, RTLIB::LOG2_F64, 2522f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::LOG2_F80, RTLIB::LOG2_PPCF128)); 2523f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2524f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG10: 2525f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG10_F32, RTLIB::LOG10_F64, 2526f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::LOG10_F80, RTLIB::LOG10_PPCF128)); 2527f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2528f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP: 2529f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP_F32, RTLIB::EXP_F64, 2530f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::EXP_F80, RTLIB::EXP_PPCF128)); 2531f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2532f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP2: 2533f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP2_F32, RTLIB::EXP2_F64, 2534f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::EXP2_F80, RTLIB::EXP2_PPCF128)); 2535f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2536f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FTRUNC: 2537f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::TRUNC_F32, RTLIB::TRUNC_F64, 2538f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::TRUNC_F80, RTLIB::TRUNC_PPCF128)); 2539f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2540f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FFLOOR: 2541f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::FLOOR_F32, RTLIB::FLOOR_F64, 2542f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::FLOOR_F80, RTLIB::FLOOR_PPCF128)); 2543f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2544f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCEIL: 2545f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::CEIL_F32, RTLIB::CEIL_F64, 2546f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::CEIL_F80, RTLIB::CEIL_PPCF128)); 2547f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2548f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FRINT: 2549f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::RINT_F32, RTLIB::RINT_F64, 2550f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::RINT_F80, RTLIB::RINT_PPCF128)); 2551f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2552f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEARBYINT: 2553f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::NEARBYINT_F32, 2554f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::NEARBYINT_F64, 2555f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::NEARBYINT_F80, 2556f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::NEARBYINT_PPCF128)); 2557f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2558f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOWI: 2559f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::POWI_F32, RTLIB::POWI_F64, 2560f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::POWI_F80, RTLIB::POWI_PPCF128)); 2561f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2562f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOW: 2563f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::POW_F32, RTLIB::POW_F64, 2564f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::POW_F80, RTLIB::POW_PPCF128)); 2565f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2566f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FDIV: 2567f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::DIV_F32, RTLIB::DIV_F64, 2568f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::DIV_F80, RTLIB::DIV_PPCF128)); 2569f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2570f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FREM: 2571f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::REM_F32, RTLIB::REM_F64, 2572f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::REM_F80, RTLIB::REM_PPCF128)); 2573f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2574f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::ConstantFP: { 2575f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman ConstantFPSDNode *CFP = cast<ConstantFPSDNode>(Node); 2576f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Check to see if this FP immediate is already legal. 2577f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isLegal = false; 2578f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman for (TargetLowering::legal_fpimm_iterator I = TLI.legal_fpimm_begin(), 2579f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman E = TLI.legal_fpimm_end(); I != E; ++I) { 2580f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (CFP->isExactlyValue(*I)) { 2581f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman isLegal = true; 2582f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2583f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2584f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2585f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // If this is a legal constant, turn it into a TargetConstantFP node. 2586f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (isLegal) 2587f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(SDValue(Node, 0)); 2588f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 2589f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(ExpandConstantFP(CFP, true, DAG, TLI)); 2590f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2591f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 259226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EHSELECTION: { 259326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionSelectorRegister(); 259426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 259526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(DAG.getCopyFromReg(Node->getOperand(1), dl, Reg, 259626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getValueType(0))); 259726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 259826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 259926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 260026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EXCEPTIONADDR: { 260126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionAddressRegister(); 260226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 260326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, Reg, 260426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getValueType(0))); 260526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 260626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 260726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 260826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::SUB: { 2609e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 261026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ISD::ADD, VT) && 261126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman TLI.isOperationLegalOrCustom(ISD::XOR, VT) && 261226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "Don't know how to expand this subtraction!"); 261326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ISD::XOR, dl, VT, Node->getOperand(1), 261426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman DAG.getConstant(APInt::getAllOnesValue(VT.getSizeInBits()), VT)); 261526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ISD::ADD, dl, VT, Tmp2, DAG.getConstant(1, VT)); 261626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(DAG.getNode(ISD::ADD, dl, VT, Node->getOperand(0), Tmp1)); 261726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 261826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 2619f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UREM: 2620f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SREM: { 2621e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 262226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 2623f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SREM; 2624f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivOpc = isSigned ? ISD::SDIV : ISD::UDIV; 2625f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 2626f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(0); 2627f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp3 = Node->getOperand(1); 26283be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) { 26293be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Tmp2, Tmp3).getValue(1); 26303be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } else if (TLI.isOperationLegalOrCustom(DivOpc, VT)) { 2631f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // X % Y -> X-X/Y*Y 2632f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivOpc, dl, VT, Tmp2, Tmp3); 2633f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, VT, Tmp1, Tmp3); 2634f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, Tmp2, Tmp1); 2635f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else if (isSigned) { 2636f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = ExpandIntLibCall(Node, true, RTLIB::SREM_I16, RTLIB::SREM_I32, 2637f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::SREM_I64, RTLIB::SREM_I128); 2638f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else { 263926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = ExpandIntLibCall(Node, false, RTLIB::UREM_I16, RTLIB::UREM_I32, 264026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::UREM_I64, RTLIB::UREM_I128); 2641f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 264226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 264326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 264426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 2645f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UDIV: 2646f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SDIV: { 2647f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SDIV; 2648f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 2649e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 265026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 2651f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) 2652f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Node->getOperand(0), 2653f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(1)); 2654f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else if (isSigned) 265526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = ExpandIntLibCall(Node, true, RTLIB::SDIV_I16, RTLIB::SDIV_I32, 265626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::SDIV_I64, RTLIB::SDIV_I128); 2657f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 2658f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = ExpandIntLibCall(Node, false, RTLIB::UDIV_I16, RTLIB::UDIV_I32, 2659f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::UDIV_I64, RTLIB::UDIV_I128); 266026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 266126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 266226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 266326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHU: 266426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHS: { 266526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned ExpandOpcode = Node->getOpcode() == ISD::MULHU ? ISD::UMUL_LOHI : 266626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman ISD::SMUL_LOHI; 2667e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 266826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 266926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ExpandOpcode, VT) && 267026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "If this wasn't legal, it shouldn't have been created!"); 267126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ExpandOpcode, dl, VTs, Node->getOperand(0), 267226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getOperand(1)); 267326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1.getValue(1)); 267426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 267526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 267626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MUL: { 2677e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 267826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 267926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // See if multiply or divide can be lowered using two-result operations. 268026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // We just need the low half of the multiply; try both the signed 268126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // and unsigned forms. If the target supports both SMUL_LOHI and 268226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // UMUL_LOHI, form a preference by checking which forms of plain 268326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // MULH it supports. 268426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasSMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::SMUL_LOHI, VT); 268526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasUMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::UMUL_LOHI, VT); 268626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHS = TLI.isOperationLegalOrCustom(ISD::MULHS, VT); 268726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHU = TLI.isOperationLegalOrCustom(ISD::MULHU, VT); 268826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned OpToUse = 0; 268926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (HasSMUL_LOHI && !HasMULHS) { 269026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 269126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI && !HasMULHU) { 269226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 269326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasSMUL_LOHI) { 269426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 269526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI) { 269626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 269726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 269826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (OpToUse) { 2699f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(DAG.getNode(OpToUse, dl, VTs, Node->getOperand(0), 2700f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(1))); 270126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 270226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 270326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = ExpandIntLibCall(Node, false, RTLIB::MUL_I16, RTLIB::MUL_I32, 270426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::MUL_I64, RTLIB::MUL_I128); 270526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 270626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 270726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 27084bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SADDO: 27094bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SSUBO: { 27104bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 27114bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 27124bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::SADDO ? 27134bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 27144bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 27154bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 2716e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OType = Node->getValueType(1); 27174bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27184bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Zero = DAG.getConstant(0, LHS.getValueType()); 27194bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27204bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // LHSSign -> LHS >= 0 27214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RHSSign -> RHS >= 0 27224bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // SumSign -> Sum >= 0 27234bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 27244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Add: 27254bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign == RHSSign) && (LHSSign != SumSign) 27264bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Sub: 27274bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign != RHSSign) && (LHSSign != SumSign) 27284bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 27294bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHSSign = DAG.getSetCC(dl, OType, LHS, Zero, ISD::SETGE); 27304bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHSSign = DAG.getSetCC(dl, OType, RHS, Zero, ISD::SETGE); 27314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignsMatch = DAG.getSetCC(dl, OType, LHSSign, RHSSign, 27324bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Node->getOpcode() == ISD::SADDO ? 27334bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETEQ : ISD::SETNE); 27344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSign = DAG.getSetCC(dl, OType, Sum, Zero, ISD::SETGE); 27364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSignNE = DAG.getSetCC(dl, OType, LHSSign, SumSign, ISD::SETNE); 27374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Cmp = DAG.getNode(ISD::AND, dl, OType, SignsMatch, SumSignNE); 27394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Cmp); 27404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 27414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 27424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::UADDO: 27434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::USUBO: { 27444bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 27454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 27464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::UADDO ? 27474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 27484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 27494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 27504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(DAG.getSetCC(dl, Node->getValueType(1), Sum, LHS, 27514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Node->getOpcode () == ISD::UADDO ? 27524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETULT : ISD::SETUGT)); 27534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 27544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2755db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::UMULO: 2756db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::SMULO: { 2757e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2758db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue LHS = Node->getOperand(0); 2759db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue RHS = Node->getOperand(1); 2760db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue BottomHalf; 2761db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue TopHalf; 2762db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman static unsigned Ops[2][3] = 2763db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { { ISD::MULHU, ISD::UMUL_LOHI, ISD::ZERO_EXTEND }, 2764db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { ISD::MULHS, ISD::SMUL_LOHI, ISD::SIGN_EXTEND }}; 2765db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman bool isSigned = Node->getOpcode() == ISD::SMULO; 2766db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (TLI.isOperationLegalOrCustom(Ops[isSigned][0], VT)) { 2767db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::MUL, dl, VT, LHS, RHS); 2768db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(Ops[isSigned][0], dl, VT, LHS, RHS); 2769db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else if (TLI.isOperationLegalOrCustom(Ops[isSigned][1], VT)) { 2770db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(Ops[isSigned][1], dl, DAG.getVTList(VT, VT), LHS, 2771db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS); 2772db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = BottomHalf.getValue(1); 277323b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson } else if (TLI.isTypeLegal(EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits() * 2))) { 277423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT WideVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits() * 2); 2775db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman LHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, LHS); 2776db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, RHS); 2777db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, WideVT, LHS, RHS); 2778db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 2779db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(0)); 2780db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 2781db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(1)); 2782db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else { 2783db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // FIXME: We should be able to fall back to a libcall with an illegal 2784db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // type in some cases cases. 2785db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // Also, we can fall back to a division in some cases, but that's a big 2786db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // performance hit in the general case. 2787c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Don't know how to expand this operation yet!"); 2788db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2789db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (isSigned) { 2790db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getConstant(VT.getSizeInBits() - 1, TLI.getShiftAmountTy()); 2791db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::SRA, dl, VT, BottomHalf, Tmp1); 2792db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, Tmp1, 2793db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman ISD::SETNE); 2794db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else { 2795db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, 2796db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getConstant(0, VT), ISD::SETNE); 2797db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2798db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(BottomHalf); 2799db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(TopHalf); 2800db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman break; 2801db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2802f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BUILD_PAIR: { 2803e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PairTy = Node->getValueType(0); 2804f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, PairTy, Node->getOperand(0)); 2805f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = DAG.getNode(ISD::ANY_EXTEND, dl, PairTy, Node->getOperand(1)); 2806f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = DAG.getNode(ISD::SHL, dl, PairTy, Tmp2, 2807f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(PairTy.getSizeInBits()/2, 2808f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman TLI.getShiftAmountTy())); 2809f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(DAG.getNode(ISD::OR, dl, PairTy, Tmp1, Tmp2)); 2810f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2811f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2812509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::SELECT: 2813509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2814509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 2815509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = Node->getOperand(2); 2816509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Tmp1.getOpcode() == ISD::SETCC) { 2817509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1.getOperand(0), Tmp1.getOperand(1), 2818509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, 2819509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<CondCodeSDNode>(Tmp1.getOperand(2))->get()); 2820509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } else { 2821509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1, 2822509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(0, Tmp1.getValueType()), 2823509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, ISD::SETNE); 2824509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2825509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 2826509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 28274bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::BR_JT: { 28284bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Node->getOperand(0); 28294bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Table = Node->getOperand(1); 28304bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Index = Node->getOperand(2); 28314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 2832e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PTy = TLI.getPointerTy(); 28334bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman MachineFunction &MF = DAG.getMachineFunction(); 28344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned EntrySize = MF.getJumpTableInfo()->getEntrySize(); 28354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Index= DAG.getNode(ISD::MUL, dl, PTy, 28364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Index, DAG.getConstant(EntrySize, PTy)); 28374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Addr = DAG.getNode(ISD::ADD, dl, PTy, Index, Table); 28384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 283923b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), EntrySize * 8); 28404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LD = DAG.getExtLoad(ISD::SEXTLOAD, dl, PTy, Chain, Addr, 28414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman PseudoSourceValue::getJumpTable(), 0, MemVT); 28424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = LD; 28434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (TLI.getTargetMachine().getRelocationModel() == Reloc::PIC_) { 28444bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // For PIC, the sequence is: 28454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // BRIND(load(Jumptable + index) + RelocBase) 28464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RelocBase can be JumpTable, GOT or some sort of global base. 28474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = DAG.getNode(ISD::ADD, dl, PTy, Addr, 28484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getPICJumpTableRelocBase(Table, DAG)); 28494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2850825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BRIND, dl, MVT::Other, LD.getValue(1), Addr); 28514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 28524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 28534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2854f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BRCOND: 2855f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Expand brcond's setcc into its constituent parts and create a BR_CC 2856f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Node. 2857f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = Node->getOperand(0); 2858f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(1); 2859f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (Tmp2.getOpcode() == ISD::SETCC) { 2860825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, 2861f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1, Tmp2.getOperand(2), 2862f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2.getOperand(0), Tmp2.getOperand(1), 2863f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 2864f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else { 2865825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, Tmp1, 2866f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getCondCode(ISD::SETNE), Tmp2, 2867f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(0, Tmp2.getValueType()), 2868f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 2869f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2870f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(Tmp1); 2871f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2872ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 2873ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = Node->getOperand(0); 2874ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp2 = Node->getOperand(1); 2875ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp3 = Node->getOperand(2); 2876bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(Node->getValueType(0), Tmp1, Tmp2, Tmp3, dl); 2877ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 2878ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // If we expanded the SETCC into an AND/OR, return the new node 2879ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman if (Tmp2.getNode() == 0) { 2880ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 2881ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 2882ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 2883ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 2884ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // Otherwise, SETCC for the given comparison type must be completely 2885ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // illegal; expand it into a SELECT_CC. 2886e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2887ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, VT, Tmp1, Tmp2, 2888ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman DAG.getConstant(1, VT), DAG.getConstant(0, VT), Tmp3); 2889ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 2890ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 2891ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 2892bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::SELECT_CC: { 2893bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // LHS 2894bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(1); // RHS 2895bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(2); // True 2896bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(3); // False 2897bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue CC = Node->getOperand(4); 2898bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2899bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp1.getValueType()), 2900bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1, Tmp2, CC, dl); 2901bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2902bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp2.getNode() && "Can't legalize SELECT_CC with legal condition!"); 2903bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = DAG.getConstant(0, Tmp1.getValueType()); 2904bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman CC = DAG.getCondCode(ISD::SETNE); 2905bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, Node->getValueType(0), Tmp1, Tmp2, 2906bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Tmp4, CC); 2907bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 2908bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 2909bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 2910bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::BR_CC: { 2911bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // Chain 2912bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(2); // LHS 2913bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(3); // RHS 2914bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(1); // CC 2915bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2916bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp2.getValueType()), 2917bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2, Tmp3, Tmp4, dl); 2918bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 2919bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2920bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp3.getNode() && "Can't legalize BR_CC with legal condition!"); 2921bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = DAG.getConstant(0, Tmp2.getValueType()); 2922bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = DAG.getCondCode(ISD::SETNE); 2923bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::BR_CC, dl, Node->getValueType(0), Tmp1, Tmp4, Tmp2, 2924bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Node->getOperand(4)); 2925bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 2926bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 2927bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 29283f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GLOBAL_OFFSET_TABLE: 29293f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalAddress: 29303f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalTLSAddress: 29313f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ExternalSymbol: 29323f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ConstantPool: 29333f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::JumpTable: 29343f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_W_CHAIN: 29353f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_WO_CHAIN: 29363f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_VOID: 29373f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // FIXME: Custom lowering for these operations shouldn't return null! 29383f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 29393f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(SDValue(Node, i)); 29403f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 29418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 29438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::PromoteNode(SDNode *Node, 29448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 2945e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OVT = Node->getValueType(0); 29468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::UINT_TO_FP || 2947a64eb92fe305424ebde2e3de2b12160b8bf76047Eli Friedman Node->getOpcode() == ISD::SINT_TO_FP || 2948a64eb92fe305424ebde2e3de2b12160b8bf76047Eli Friedman Node->getOpcode() == ISD::SETCC) { 29498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT = Node->getOperand(0).getValueType(); 29508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 2951e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), OVT); 29528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 2953509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SDValue Tmp1, Tmp2, Tmp3; 29548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 29558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 29568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 29578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 29588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Zero extend the argument. 29598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0)); 29608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Perform the larger operation. 29619a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1); 29628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::CTTZ) { 29638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman //if Tmp1 == sizeinbits(NVT) then Tmp1 = sizeinbits(Old VT) 29649a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), 29658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, DAG.getConstant(NVT.getSizeInBits(), NVT), 29668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ISD::SETEQ); 29678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, 29688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OVT.getSizeInBits(), NVT), Tmp1); 29698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else if (Node->getOpcode() == ISD::CTLZ) { 29708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Tmp1 = Tmp1 - (sizeinbits(NVT) - sizeinbits(Old VT)) 29718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, NVT, Tmp1, 29728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(NVT.getSizeInBits() - 29738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT.getSizeInBits(), NVT)); 29748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29759a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Results.push_back(DAG.getNode(ISD::TRUNCATE, dl, OVT, Tmp1)); 29768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: { 29788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman unsigned DiffBits = NVT.getSizeInBits() - OVT.getSizeInBits(); 29798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Tmp1); 29808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::BSWAP, dl, NVT, Tmp1); 29818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRL, dl, NVT, Tmp1, 29828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(DiffBits, TLI.getShiftAmountTy())); 29838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 29848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: 29878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_SINT: 29888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalFP_TO_INT(Node->getOperand(0), Node->getValueType(0), 29898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::FP_TO_SINT, dl); 29908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 29918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 29938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 29948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalINT_TO_FP(Node->getOperand(0), Node->getValueType(0), 29958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::SINT_TO_FP, dl); 29968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 29978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 2998f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::AND: 2999f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::OR: 3000c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::XOR: { 3001c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen unsigned ExtOp, TruncOp; 3002c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen if (OVT.isVector()) { 3003c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen ExtOp = ISD::BIT_CONVERT; 3004c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen TruncOp = ISD::BIT_CONVERT; 3005c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } else if (OVT.isInteger()) { 3006c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen ExtOp = ISD::ANY_EXTEND; 3007c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen TruncOp = ISD::TRUNCATE; 3008c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } else { 3009c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen llvm_report_error("Cannot promote logic operation"); 3010c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3011c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Promote each of the values to the new type. 3012c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 3013c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3014c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Perform the larger operation, then convert back 3015f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1, Tmp2); 3016c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Results.push_back(DAG.getNode(TruncOp, dl, OVT, Tmp1)); 3017f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3018c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3019c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::SELECT: { 3020509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned ExtOp, TruncOp; 30214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Node->getValueType(0).isVector()) { 3022509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::BIT_CONVERT; 3023509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::BIT_CONVERT; 30244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else if (Node->getValueType(0).isInteger()) { 3025509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::ANY_EXTEND; 3026509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::TRUNCATE; 3027509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } else { 3028509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::FP_EXTEND; 3029509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::FP_ROUND; 3030509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3031509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 3032509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Promote each of the values to the new type. 3033509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3034509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(2)); 3035509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Perform the larger operation, then round down. 3036509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp1, Tmp2, Tmp3); 3037509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (TruncOp != ISD::FP_ROUND) 3038509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1); 3039509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 3040509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1, 3041509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(0)); 3042509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3043509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3044c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3045509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 3046509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 3047509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 3048509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3049509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Cast the two input vectors. 3050509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(0)); 3051509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(1)); 3052509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3053509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Convert the shuffle mask to the right # elements. 3054509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = ShuffleWithNarrowerEltType(NVT, OVT, dl, Tmp1, Tmp2, Mask); 3055509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, OVT, Tmp1); 3056509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3057509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3058509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3059ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 306078d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen unsigned ExtOp = ISD::FP_EXTEND; 306178d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen if (NVT.isInteger()) { 306278d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ISD::CondCode CCCode = 306378d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen cast<CondCodeSDNode>(Node->getOperand(2))->get(); 306478d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ExtOp = isSignedIntSetCC(CCCode) ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND; 3065ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 306678d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 306778d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3068ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(DAG.getNode(ISD::SETCC, dl, Node->getValueType(0), 3069ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1, Tmp2, Node->getOperand(2))); 3070ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3071ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 30728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 30738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 30748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 30753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// SelectionDAG::Legalize - This is the entry point for the file. 30763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 307798a366d547772010e94609e4584489b3e5ce0043Bill Wendlingvoid SelectionDAG::Legalize(bool TypesNeedLegalizing, 307898a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 30793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// run - This is the main entry point to this class. 30803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 30811fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(*this, OptLevel).LegalizeDAG(); 30823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 30833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 3084