LegalizeDAG.cpp revision 1d0be15f89cb5056e20e2d24faa8d6afb1573bca
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" 387971514755a08ec156a1b9c0f7f05d67919c56b7Chris Lattner#include "llvm/ADT/DenseMap.h" 39f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner#include "llvm/ADT/SmallVector.h" 4000755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner#include "llvm/ADT/SmallPtrSet.h" 41033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng#include <map> 423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerusing namespace llvm; 433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// SelectionDAGLegalize - This takes an arbitrary SelectionDAG as input and 463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// hacks on it until the target machine can handle it. This involves 473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating value sizes the machine cannot handle (promoting small sizes to 483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// large sizes or splitting up large values into small values) as well as 493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating operations the machine cannot handle. 503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// This code also does a small amount of optimization and recognition of idioms 523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// as part of its processing. For example, if a target does not support a 533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 'setcc' instruction efficiently, but does support 'brcc' instruction, this 543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// will attempt merge setcc and brc instructions into brcc's. 553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnernamespace { 57360e8200ec544a3c877ff74b48f445140ac9bbd6Chris Lattnerclass VISIBILITY_HIDDEN SelectionDAGLegalize { 583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner TargetLowering &TLI; 593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SelectionDAG &DAG; 6098a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel; 613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 626831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Libcall insertion helpers. 63fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 646831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// LastCALLSEQ_END - This keeps track of the CALLSEQ_END node that has been 656831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// legalized. We use this to ensure that calls are properly serialized 666831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// against each other, including inserted libcalls. 67475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LastCALLSEQ_END; 68fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 696831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// IsLegalizingCall - This member is used *only* for purposes of providing 70fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel /// helpful assertions that a libcall isn't created while another call is 716831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// being legalized (which could lead to non-serialized call sequences). 726831a815999dde4cf801e2076e66b4943964daf2Chris Lattner bool IsLegalizingCall; 73fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner enum LegalizeAction { 7568a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Legal, // The target natively supports this operation. 7668a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Promote, // This operation should be executed in a larger type. 77d74ea2bbd8bb630331f35ead42d385249bd42af8Chris Lattner Expand // Try to expand this to other ops, otherwise use a libcall. 783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner }; 79fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// ValueTypeActions - This is a bitvector that contains two bits for each 813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// value type, where the two bits correspond to the LegalizeAction enum. 823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// This can be queried with "getTypeAction(VT)". 8368a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner TargetLowering::ValueTypeActionImpl ValueTypeActions; 843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// LegalizedNodes - For nodes that are of legal width, and that have more 863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// than one use, this map indicates what regularized operand to use. This 873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// allows us to avoid legalizing the same thing more than once. 88475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue> LegalizedNodes; 893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 90475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void AddLegalizedOperand(SDValue From, SDValue To) { 9169a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(From, To)); 9269a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner // If someone requests legalization of the new node, return itself. 9369a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner if (From != To) 9469a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(To, To)); 958afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner } 968afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner 973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerpublic: 981fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(SelectionDAG &DAG, CodeGenOpt::Level ol); 993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// getTypeAction - Return how we should legalize values of this type, either 1013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// it is already legal or we need to expand it into multiple registers of 1023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// smaller integer type, or we need to promote it to a larger type. 103e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson LegalizeAction getTypeAction(EVT VT) const { 10423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson return 10523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson (LegalizeAction)ValueTypeActions.getTypeAction(*DAG.getContext(), VT); 1063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// isTypeLegal - Return true if this type is legal on this target. 1093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 110e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson bool isTypeLegal(EVT VT) const { 1113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return getTypeAction(VT) == Legal; 1123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner void LegalizeDAG(); 1153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 116456a93afcec7740c45cafa8354317f7b17987a6dChris Lattnerprivate: 117c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// LegalizeOp - We know that the specified value has a legal type. 118c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// Recursively ensure that the operands have legal types, then return the 119c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// result. 120475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LegalizeOp(SDValue O); 121fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1227ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue OptimizeFloatStore(StoreSDNode *ST); 1237ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 1246867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// PerformInsertVectorEltInMemory - Some target cannot handle a variable 1256867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 1266867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// is necessary to spill the vector being inserted into to memory, perform 1276867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// the insert there, and then read the result back. 128475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue PerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, 1293f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 1303f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, 1313f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 132826695281344e3a4c4d44d73dd155107aafd689bDan Gohman 1335a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1345a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// performs the same shuffe in terms of order or result bytes, but on a type 1355a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// whose vector element type is narrower than the original shuffle type. 1365a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 137e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl, 1385a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue N1, SDValue N2, 1395a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SmallVectorImpl<int> &Mask) const; 140fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 141c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner bool LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 14200755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo); 1436831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 144e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson void LegalizeSetCCCondCode(EVT VT, SDValue &LHS, SDValue &RHS, SDValue &CC, 145bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl); 146fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 14747b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman SDValue ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, bool isSigned); 148f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman SDValue ExpandFPLibCall(SDNode *Node, RTLIB::Libcall Call_F32, 149f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, RTLIB::Libcall Call_F80, 150f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128); 151f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman SDValue ExpandIntLibCall(SDNode *Node, bool isSigned, RTLIB::Libcall Call_I16, 152f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I32, RTLIB::Libcall Call_I64, 153f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128); 154475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 155e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue EmitStackConvert(SDValue SrcOp, EVT SlotVT, EVT DestVT, DebugLoc dl); 156475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandBUILD_VECTOR(SDNode *Node); 157475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandSCALAR_TO_VECTOR(SDNode *Node); 1584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue ExpandDBG_STOPPOINT(SDNode *Node); 1594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman void ExpandDYNAMIC_STACKALLOC(SDNode *Node, 1604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results); 1614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue ExpandFCOPYSIGN(SDNode *Node); 162e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue ExpandLegalINT_TO_FP(bool isSigned, SDValue LegalOp, EVT DestVT, 163af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 164e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue PromoteLegalINT_TO_FP(SDValue LegalOp, EVT DestVT, bool isSigned, 165af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 166e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue PromoteLegalFP_TO_INT(SDValue LegalOp, EVT DestVT, bool isSigned, 167af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 168475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1698a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBSWAP(SDValue Op, DebugLoc dl); 1708a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBitCount(unsigned Opc, SDValue Op, DebugLoc dl); 171475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1723d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue ExpandExtractFromVectorThroughStack(SDValue Op); 1737ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue ExpandVectorBuildThroughStack(SDNode* Node); 1748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 1758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void ExpandNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void PromoteNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner}; 1783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1805a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1815a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// performs the same shuffe in terms of order or result bytes, but on a type 1825a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// whose vector element type is narrower than the original shuffle type. 1839008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman/// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 1845a5ca1519e04310f585197c20e7ae584b7f2d11fNate BegemanSDValue 185e50ed30282bb5b4a9ed952580523f2dda16215acOwen AndersonSelectionDAGLegalize::ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl, 1865a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue N1, SDValue N2, 1879008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVectorImpl<int> &Mask) const { 188e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = NVT.getVectorElementType(); 1895a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumMaskElts = VT.getVectorNumElements(); 1905a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumDestElts = NVT.getVectorNumElements(); 1919008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman unsigned NumEltsGrowth = NumDestElts / NumMaskElts; 1929008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1939008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(NumEltsGrowth && "Cannot promote to vector type with fewer elts!"); 1949008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1959008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman if (NumEltsGrowth == 1) 1969008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &Mask[0]); 1979008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1989008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVector<int, 8> NewMask; 1995a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman for (unsigned i = 0; i != NumMaskElts; ++i) { 2009008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman int Idx = Mask[i]; 2019008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman for (unsigned j = 0; j != NumEltsGrowth; ++j) { 2029008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman if (Idx < 0) 2039008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(-1); 2049008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman else 2059008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(Idx * NumEltsGrowth + j); 2064352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner } 20715684b29552393553524171bff1913e750f390f8Rafael Espindola } 2085a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman assert(NewMask.size() == NumDestElts && "Non-integer NumEltsGrowth?"); 2099008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(TLI.isShuffleMaskLegal(NewMask, NVT) && "Shuffle not legal?"); 2109008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &NewMask[0]); 2114352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 2124352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 2135aa4977fba97e816b5735f0bc53f16a46b24de63Bill WendlingSelectionDAGLegalize::SelectionDAGLegalize(SelectionDAG &dag, 2141fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman CodeGenOpt::Level ol) 215be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling : TLI(dag.getTargetLoweringInfo()), DAG(dag), OptLevel(ol), 2161fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman ValueTypeActions(TLI.getValueTypeActions()) { 217825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE && 2183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Too many value types for ValueTypeActions to hold!"); 2193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAGLegalize::LegalizeDAG() { 2226831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LastCALLSEQ_END = DAG.getEntryNode(); 2236831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = false; 224e5ab34e05d701da042619bf540046efc3c7bc41fMon P Wang 225ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // The legalize process is inherently a bottom-up recursive process (users 226ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // legalize their uses before themselves). Given infinite stack space, we 227ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // could just start legalizing on the root and traverse the whole graph. In 228ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // practice however, this causes us to run out of stack space on large basic 22932fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // blocks. To avoid this problem, compute an ordering of the nodes where each 23032fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // node is only legalized after all of its operands are legalized. 231f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman DAG.AssignTopologicalOrder(); 232f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman for (SelectionDAG::allnodes_iterator I = DAG.allnodes_begin(), 233f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman E = prior(DAG.allnodes_end()); I != next(E); ++I) 234b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(I, 0)); 23532fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner 23632fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // Finally, it's possible the root changed. Get the new root. 237475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue OldRoot = DAG.getRoot(); 23832fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner assert(LegalizedNodes.count(OldRoot) && "Root didn't get legalized?"); 23932fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner DAG.setRoot(LegalizedNodes[OldRoot]); 2403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LegalizedNodes.clear(); 2423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remove dead nodes now. 244190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner DAG.RemoveDeadNodes(); 2453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2476831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 2486831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// FindCallEndFromCallStart - Given a chained node that is part of a call 2496831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_END node that terminates the call sequence. 2506831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallEndFromCallStart(SDNode *Node) { 2516831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_END) 2526831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Node; 2536831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->use_empty()) 2546831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; // No CallSeqEnd 255fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2566831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // The chain is usually at the end. 257475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue TheChain(Node, Node->getNumValues()-1); 258825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) { 2596831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Sometimes it's at the beginning. 260475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, 0); 261825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) { 2626831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Otherwise, hunt for it. 2636831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 1, e = Node->getNumValues(); i != e; ++i) 264825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Node->getValueType(i) == MVT::Other) { 265475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, i); 2666831a815999dde4cf801e2076e66b4943964daf2Chris Lattner break; 2676831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 268fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 269fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, we walked into a node without a chain. 270825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) 2716831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2726831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2736831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 274fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2756831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (SDNode::use_iterator UI = Node->use_begin(), 2766831a815999dde4cf801e2076e66b4943964daf2Chris Lattner E = Node->use_end(); UI != E; ++UI) { 277fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2786831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Make sure to only follow users of our token chain. 2798968450305c28444edc3c272d8752a8db0c2f34aDan Gohman SDNode *User = *UI; 2806831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) 2816831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (User->getOperand(i) == TheChain) 2826831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (SDNode *Result = FindCallEndFromCallStart(User)) 2836831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 2846831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2856831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2866831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 2876831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 288fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// FindCallStartFromCallEnd - Given a chained node that is part of a call 2896831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_START node that initiates the call sequence. 2906831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallStartFromCallEnd(SDNode *Node) { 2916831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(Node && "Didn't find callseq_start for a call??"); 2926831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_START) return Node; 293fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 294825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert(Node->getOperand(0).getValueType() == MVT::Other && 2956831a815999dde4cf801e2076e66b4943964daf2Chris Lattner "Node doesn't have a token chain argument!"); 296ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif return FindCallStartFromCallEnd(Node->getOperand(0).getNode()); 2976831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 2986831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 2996831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// LegalizeAllNodesNotLeadingTo - Recursively walk the uses of N, looking to 300fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// see if any uses can reach Dest. If no dest operands can get to dest, 3016831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// legalize them, legalize ourself, and return false, otherwise, return true. 302c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 303c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// Keep track of the nodes we fine that actually do lead to Dest in 304c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// NodesLeadingTo. This avoids retraversing them exponential number of times. 305c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 306c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattnerbool SelectionDAGLegalize::LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 30700755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo) { 3086831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (N == Dest) return true; // N certainly leads to Dest :) 309fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 310c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // If we've already processed this node and it does lead to Dest, there is no 311c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // need to reprocess it. 312c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (NodesLeadingTo.count(N)) return true; 313fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3146831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the first result of this node has been already legalized, then it cannot 3156831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // reach N. 31674807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman if (LegalizedNodes.count(SDValue(N, 0))) return false; 317fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3186831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node has not already been legalized. Check and legalize all 3196831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // operands. If none lead to Dest, then we can legalize this node. 3206831a815999dde4cf801e2076e66b4943964daf2Chris Lattner bool OperandsLeadToDest = false; 3216831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) 3226831a815999dde4cf801e2076e66b4943964daf2Chris Lattner OperandsLeadToDest |= // If an operand leads to Dest, so do we. 323ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif LegalizeAllNodesNotLeadingTo(N->getOperand(i).getNode(), Dest, NodesLeadingTo); 3246831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 325c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (OperandsLeadToDest) { 326c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo.insert(N); 327c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner return true; 328c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 3296831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3306831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node looks safe, legalize it and return false. 331b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(N, 0)); 3326831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return false; 3336831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 3346831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3359f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// ExpandConstantFP - Expands the ConstantFP node to an integer constant or 3369f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// a load from the constant pool. 337475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanstatic SDValue ExpandConstantFP(ConstantFPSDNode *CFP, bool UseCP, 3380d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman SelectionDAG &DAG, const TargetLowering &TLI) { 339004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng bool Extend = false; 34033c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen DebugLoc dl = CFP->getDebugLoc(); 341004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 342004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // If a FP immediate is precise when represented as a float and if the 343004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // target can do an extending load from float to double, we put it into 344004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // the constant pool as a float, even if it's is statically typed as a 345aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // double. This shrinks FP constants and canonicalizes them for targets where 346aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // an FP extending load is the same cost as a normal load (such as on the x87 347aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // fp stack or PPC FP unit). 348e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = CFP->getValueType(0); 3494fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman ConstantFP *LLVMC = const_cast<ConstantFP*>(CFP->getConstantFPValue()); 3509f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng if (!UseCP) { 351825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert((VT == MVT::f64 || VT == MVT::f32) && "Invalid type expansion"); 3527111b02c734c992b8c97d9918118768026dad79eDale Johannesen return DAG.getConstant(LLVMC->getValueAPF().bitcastToAPInt(), 353825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (VT == MVT::f64) ? MVT::i64 : MVT::i32); 354279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng } 355279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng 356e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OrigVT = VT; 357e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SVT = VT; 358825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson while (SVT != MVT::f32) { 359825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SVT = (MVT::SimpleValueType)(SVT.getSimpleVT().SimpleTy - 1); 360ef12057737229452c17983faa20857dba441ef05Evan Cheng if (CFP->isValueValidForType(SVT, CFP->getValueAPF()) && 361ef12057737229452c17983faa20857dba441ef05Evan Cheng // Only do this if the target has a native EXTLOAD instruction from 362ef12057737229452c17983faa20857dba441ef05Evan Cheng // smaller type. 3630329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng TLI.isLoadExtLegal(ISD::EXTLOAD, SVT) && 364aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner TLI.ShouldShrinkFPConstant(OrigVT)) { 36523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *SType = SVT.getTypeForEVT(*DAG.getContext()); 366baf3c404409d5e47b13984a7f95bfbd6d1f2e79eOwen Anderson LLVMC = cast<ConstantFP>(ConstantExpr::getFPTrunc(LLVMC, SType)); 367ef12057737229452c17983faa20857dba441ef05Evan Cheng VT = SVT; 368ef12057737229452c17983faa20857dba441ef05Evan Cheng Extend = true; 369ef12057737229452c17983faa20857dba441ef05Evan Cheng } 370004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng } 371004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 372475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(LLVMC, TLI.getPointerTy()); 3731606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 374ef12057737229452c17983faa20857dba441ef05Evan Cheng if (Extend) 37533c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen return DAG.getExtLoad(ISD::EXTLOAD, dl, 37639355f9fea790c5a1b12ef0fdcfeac3f533232eaDale Johannesen OrigVT, DAG.getEntryNode(), 3773069b8743769527ce7af6cfb6591a2f0fc2faee4Dan Gohman CPIdx, PseudoSourceValue::getConstantPool(), 37850284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman 0, VT, false, Alignment); 37933c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen return DAG.getLoad(OrigVT, dl, DAG.getEntryNode(), CPIdx, 38050284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, false, Alignment); 381004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng} 382004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 383f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedStore - Expands an unaligned store to 2 half-size stores. 384f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 385475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedStore(StoreSDNode *ST, SelectionDAG &DAG, 3860d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman const TargetLowering &TLI) { 387475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = ST->getChain(); 388475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = ST->getBasePtr(); 389475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Val = ST->getValue(); 390e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Val.getValueType(); 391907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen int Alignment = ST->getAlignment(); 392907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen int SVOffset = ST->getSrcValueOffset(); 393bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = ST->getDebugLoc(); 39483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ST->getMemoryVT().isFloatingPoint() || 39583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands ST->getMemoryVT().isVector()) { 39623b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT intVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits()); 39705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 39805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a bitconvert of the value to the integer type of the 39905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // same size, then a (misaligned) int store. 40005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // FIXME: Does not handle truncating floating point stores! 401bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::BIT_CONVERT, dl, intVT, Val); 402bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getStore(Chain, dl, Result, Ptr, ST->getSrcValue(), 40305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset, ST->isVolatile(), Alignment); 40405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } else { 40505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do a (aligned) store to a stack slot, then copy from the stack slot 40605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // to the final destination using (unaligned) integer loads and stores. 407e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT StoredVT = ST->getMemoryVT(); 408e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT RegVT = 40923b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson TLI.getRegisterType(*DAG.getContext(), EVT::getIntegerVT(*DAG.getContext(), StoredVT.getSizeInBits())); 41005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned StoredBytes = StoredVT.getSizeInBits() / 8; 41105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned RegBytes = RegVT.getSizeInBits() / 8; 41205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned NumRegs = (StoredBytes + RegBytes - 1) / RegBytes; 41305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 414fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Make sure the stack slot is also aligned for the register type. 415fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands SDValue StackPtr = DAG.CreateStackTemporary(StoredVT, RegVT); 416fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 417fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Perform the original store, only redirected to the stack slot. 418fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Store = DAG.getTruncStore(Chain, dl, 419ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson Val, StackPtr, NULL, 0, StoredVT); 42005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 42105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SmallVector<SDValue, 8> Stores; 42205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned Offset = 0; 42305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 42405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do all but one copies using the full register width. 42505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands for (unsigned i = 1; i < NumRegs; i++) { 42605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Load one integer register's worth from the stack slot. 427bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getLoad(RegVT, dl, Store, StackPtr, NULL, 0); 42805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Store it to the final location. Remember the store. 429bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, Ptr, 43005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->getSrcValue(), SVOffset + Offset, 43105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->isVolatile(), 43205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 43305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Increment the pointers. 43405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Offset += RegBytes; 435bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 43605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Increment); 437bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 43805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 43905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 440fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // The last store may be partial. Do a truncating store. On big-endian 441fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // machines this requires an extending load from the stack slot to ensure 442fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // that the bits are in the right place. 44323b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 8 * (StoredBytes - Offset)); 444fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 445fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Load from the stack slot. 446bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Store, StackPtr, 447fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands NULL, 0, MemVT); 44805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 449bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, Ptr, 45005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->getSrcValue(), SVOffset + Offset, 451fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MemVT, ST->isVolatile(), 45205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 45305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The order of the stores doesn't matter - say it with a TokenFactor. 454825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 45505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Stores.size()); 45605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 457907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 45883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(ST->getMemoryVT().isInteger() && 45983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands !ST->getMemoryVT().isVector() && 460907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen "Unaligned store of unknown type."); 461f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Get the half-size VT 462e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewStoredVT = 463825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (MVT::SimpleValueType)(ST->getMemoryVT().getSimpleVT().SimpleTy - 1); 46483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands int NumBits = NewStoredVT.getSizeInBits(); 465f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int IncrementSize = NumBits / 8; 466f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 467f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Divide the stored value in two parts. 468475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 469475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = Val; 470bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Hi = DAG.getNode(ISD::SRL, dl, VT, Val, ShiftAmount); 471f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 472f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Store the two parts 473475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store1, Store2; 474bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store1 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Lo:Hi, Ptr, 475f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->getSrcValue(), SVOffset, NewStoredVT, 476f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->isVolatile(), Alignment); 477bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 478f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 479dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands Alignment = MinAlign(Alignment, IncrementSize); 480bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store2 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Hi:Lo, Ptr, 481f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->getSrcValue(), SVOffset + IncrementSize, 482f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio NewStoredVT, ST->isVolatile(), Alignment); 483f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 484825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Store1, Store2); 485f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 486f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 487f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedLoad - Expands an unaligned load to 2 half-size loads. 488f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 489475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedLoad(LoadSDNode *LD, SelectionDAG &DAG, 490e9530ecae4897fe8157bd4d7616043bd8c0484e2Dan Gohman const TargetLowering &TLI) { 491f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int SVOffset = LD->getSrcValueOffset(); 492475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = LD->getChain(); 493475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = LD->getBasePtr(); 494e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = LD->getValueType(0); 495e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT LoadedVT = LD->getMemoryVT(); 496bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = LD->getDebugLoc(); 49783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (VT.isFloatingPoint() || VT.isVector()) { 49823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT intVT = EVT::getIntegerVT(*DAG.getContext(), LoadedVT.getSizeInBits()); 49905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 50005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a (misaligned) integer load of the same size, 50105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // then bitconvert to floating point or vector. 502bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue newLoad = DAG.getLoad(intVT, dl, Chain, Ptr, LD->getSrcValue(), 50305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset, LD->isVolatile(), 504907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen LD->getAlignment()); 505bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::BIT_CONVERT, dl, LoadedVT, newLoad); 50605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (VT.isFloatingPoint() && LoadedVT != VT) 507bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, VT, Result); 508907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen 50905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Ops[] = { Result, Chain }; 510bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 51105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } else { 51205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Copy the value to a (aligned) stack slot using (unaligned) integer 51305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // loads and stores, then do a (aligned) load from the stack slot. 51423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RegVT = TLI.getRegisterType(*DAG.getContext(), intVT); 51505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned LoadedBytes = LoadedVT.getSizeInBits() / 8; 51605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned RegBytes = RegVT.getSizeInBits() / 8; 51705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned NumRegs = (LoadedBytes + RegBytes - 1) / RegBytes; 51805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 519fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Make sure the stack slot is also aligned for the register type. 520fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands SDValue StackBase = DAG.CreateStackTemporary(LoadedVT, RegVT); 521fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 52205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 52305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SmallVector<SDValue, 8> Stores; 52405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue StackPtr = StackBase; 52505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned Offset = 0; 52605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 52705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do all but one copies using the full register width. 52805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands for (unsigned i = 1; i < NumRegs; i++) { 52905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Load one integer register's worth from the original location. 530bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getLoad(RegVT, dl, Chain, Ptr, LD->getSrcValue(), 53105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset + Offset, LD->isVolatile(), 53205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(LD->getAlignment(), Offset)); 53305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 534bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, StackPtr, 53505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands NULL, 0)); 53605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Increment the pointers. 53705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Offset += RegBytes; 538bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 539bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 54005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Increment); 54105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 54205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 54305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The last copy may be partial. Do an extending load. 54423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 8 * (LoadedBytes - Offset)); 545bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Chain, Ptr, 54605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands LD->getSrcValue(), SVOffset + Offset, 547fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MemVT, LD->isVolatile(), 54805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(LD->getAlignment(), Offset)); 54905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 550fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // On big-endian machines this requires a truncating store to ensure 551fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // that the bits end up in the right place. 552bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, StackPtr, 553fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands NULL, 0, MemVT)); 55405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 55505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The order of the stores doesn't matter - say it with a TokenFactor. 556825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 55705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Stores.size()); 55805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 55905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Finally, perform the original load only redirected to the stack slot. 560bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Load = DAG.getExtLoad(LD->getExtensionType(), dl, VT, TF, StackBase, 56105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands NULL, 0, LoadedVT); 56205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 56305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Callers expect a MERGE_VALUES node. 56405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Ops[] = { Load, TF }; 565bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 56605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 567907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 56883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(LoadedVT.isInteger() && !LoadedVT.isVector() && 569e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner "Unaligned load of unsupported type."); 570e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner 5718155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // Compute the new VT that is half the size of the old one. This is an 5728155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // integer MVT. 57383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned NumBits = LoadedVT.getSizeInBits(); 574e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewLoadedVT; 57523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson NewLoadedVT = EVT::getIntegerVT(*DAG.getContext(), NumBits/2); 576e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner NumBits >>= 1; 577fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 578e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned Alignment = LD->getAlignment(); 579e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned IncrementSize = NumBits / 8; 580f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ISD::LoadExtType HiExtType = LD->getExtensionType(); 581f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 582f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If the original load is NON_EXTLOAD, the hi part load must be ZEXTLOAD. 583f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (HiExtType == ISD::NON_EXTLOAD) 584f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio HiExtType = ISD::ZEXTLOAD; 585f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 586f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Load the value in two parts 587475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 588f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (TLI.isLittleEndian()) { 589bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getSrcValue(), 590f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset, NewLoadedVT, LD->isVolatile(), Alignment); 591bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 592f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 593bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getSrcValue(), 594f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset + IncrementSize, NewLoadedVT, LD->isVolatile(), 595dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands MinAlign(Alignment, IncrementSize)); 596f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 597bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getSrcValue(), 598ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson SVOffset, NewLoadedVT, LD->isVolatile(), Alignment); 599bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 600f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 601bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getSrcValue(), 602f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset + IncrementSize, NewLoadedVT, LD->isVolatile(), 603dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands MinAlign(Alignment, IncrementSize)); 604f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 605f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 606f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // aggregate the two parts 607475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 608bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::SHL, dl, VT, Hi, ShiftAmount); 609bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::OR, dl, VT, Result, Lo); 610f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 611825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 612f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Hi.getValue(1)); 613f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 614475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Result, TF }; 615bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 616f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 617912095becac923ff614d7b07728eb345ada67765Evan Cheng 6186867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// PerformInsertVectorEltInMemory - Some target cannot handle a variable 6196867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 6206867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// is necessary to spill the vector being inserted into to memory, perform 6216867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// the insert there, and then read the result back. 622475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize:: 623bb5da918545efb54857a09c983a5a7f22a7e04d4Dale JohannesenPerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, SDValue Idx, 624bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl) { 625475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1 = Vec; 626475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp2 = Val; 627475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = Idx; 628fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 6296867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // If the target doesn't support this, we have to spill the input vector 6306867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // to a temporary stack slot, update the element, then reload it. This is 6316867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // badness. We could also load the value into a vector register (either 6326867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // with a "move to register" or "extload into register" instruction, then 6336867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // permute it into place, if the idx is a constant and if the idx is 6346867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // supported by the target. 635e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp1.getValueType(); 636e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 637e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT IdxVT = Tmp3.getValueType(); 638e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PtrVT = TLI.getPointerTy(); 639475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(VT); 6406867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 641ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif int SPFI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex(); 6426867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 6436867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the vector. 644bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Tmp1, StackPtr, 6450c39719bfc7d0b3e61fbd55e1115184a1d5f6ae7Mon P Wang PseudoSourceValue::getFixedStack(SPFI), 0); 6466867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 6476867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Truncate or zero extend offset to target pointer type. 6488e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands unsigned CastOpc = IdxVT.bitsGT(PtrVT) ? ISD::TRUNCATE : ISD::ZERO_EXTEND; 649bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(CastOpc, dl, PtrVT, Tmp3); 6506867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Add the offset to the index. 65183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned EltSize = EltVT.getSizeInBits()/8; 652bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(ISD::MUL, dl, IdxVT, Tmp3,DAG.getConstant(EltSize, IdxVT)); 653bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue StackPtr2 = DAG.getNode(ISD::ADD, dl, IdxVT, Tmp3, StackPtr); 6546867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the scalar value. 655bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ch = DAG.getTruncStore(Ch, dl, Tmp2, StackPtr2, 656a54cf176613f9ae8301519a61b8935652c0fb8aeDan Gohman PseudoSourceValue::getFixedStack(SPFI), 0, EltVT); 6576867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Load the updated vector. 658bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getLoad(VT, dl, Ch, StackPtr, 659a54cf176613f9ae8301519a61b8935652c0fb8aeDan Gohman PseudoSourceValue::getFixedStack(SPFI), 0); 6606867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman} 6616867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 662e9f1015d1f184a51aaadfd03be0846bd5e7d08a2Mon P Wang 6633f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanSDValue SelectionDAGLegalize:: 6643f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, SDValue Idx, DebugLoc dl) { 6653f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (ConstantSDNode *InsertPos = dyn_cast<ConstantSDNode>(Idx)) { 6663f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // SCALAR_TO_VECTOR requires that the type of the value being inserted 6673f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // match the element type of the vector being created, except for 6683f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // integers in which case the inserted value can be over width. 669e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = Vec.getValueType().getVectorElementType(); 6703f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (Val.getValueType() == EltVT || 6713f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman (EltVT.isInteger() && Val.getValueType().bitsGE(EltVT))) { 6723f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ScVec = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, 6733f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Vec.getValueType(), Val); 6743f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6753f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman unsigned NumElts = Vec.getValueType().getVectorNumElements(); 6763f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // We generate a shuffle of InVec and ScVec, so the shuffle mask 6773f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // should be 0,1,2,3,4,5... with the appropriate element replaced with 6783f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // elt 0 of the RHS. 6793f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SmallVector<int, 8> ShufOps; 6803f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0; i != NumElts; ++i) 6813f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman ShufOps.push_back(i != InsertPos->getZExtValue() ? i : NumElts); 6823f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6833f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return DAG.getVectorShuffle(Vec.getValueType(), dl, Vec, ScVec, 6843f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman &ShufOps[0]); 6853f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 6863f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 6873f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return PerformInsertVectorEltInMemory(Vec, Val, Idx, dl); 6883f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman} 6893f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6907ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::OptimizeFloatStore(StoreSDNode* ST) { 6917ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Turn 'store float 1.0, Ptr' -> 'store int 0x12345678, Ptr' 6927ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: We shouldn't do this for TargetConstantFP's. 6937ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: move this to the DAG Combiner! Note that we can't regress due 6947ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // to phase ordering between legalized code and the dag combiner. This 6957ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // probably means that we need to integrate dag combiner and legalizer 6967ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // together. 6977ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We generally can't do this one for long doubles. 6987ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp1 = ST->getChain(); 6997ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp2 = ST->getBasePtr(); 7007ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp3; 7017ef3d178660b82d1571757e49f44b004d772a116Eli Friedman int SVOffset = ST->getSrcValueOffset(); 7027ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Alignment = ST->getAlignment(); 7037ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bool isVolatile = ST->isVolatile(); 7047ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = ST->getDebugLoc(); 7057ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(ST->getValue())) { 706825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (CFP->getValueType(0) == MVT::f32 && 707825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson getTypeAction(MVT::i32) == Legal) { 7087ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF(). 7097ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bitcastToAPInt().zextOrTrunc(32), 710825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::i32); 7117ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 7127ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SVOffset, isVolatile, Alignment); 713825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (CFP->getValueType(0) == MVT::f64) { 7147ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // If this target supports 64-bit registers, do a single 64-bit store. 715825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (getTypeAction(MVT::i64) == Legal) { 7167ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF().bitcastToAPInt(). 717825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson zextOrTrunc(64), MVT::i64); 7187ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 7197ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SVOffset, isVolatile, Alignment); 720825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (getTypeAction(MVT::i32) == Legal && !ST->isVolatile()) { 7217ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, if the target supports 32-bit registers, use 2 32-bit 7227ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // stores. If the target supports neither 32- nor 64-bits, this 7237ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // xform is certainly not worth it. 7247ef3d178660b82d1571757e49f44b004d772a116Eli Friedman const APInt &IntVal =CFP->getValueAPF().bitcastToAPInt(); 725825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Lo = DAG.getConstant(APInt(IntVal).trunc(32), MVT::i32); 726825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Hi = DAG.getConstant(IntVal.lshr(32).trunc(32), MVT::i32); 7277ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (TLI.isBigEndian()) std::swap(Lo, Hi); 7287ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 7297ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Lo = DAG.getStore(Tmp1, dl, Lo, Tmp2, ST->getSrcValue(), 7307ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SVOffset, isVolatile, Alignment); 7317ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 7327ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DAG.getIntPtrConstant(4)); 7337ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Hi = DAG.getStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), SVOffset+4, 7347ef3d178660b82d1571757e49f44b004d772a116Eli Friedman isVolatile, MinAlign(Alignment, 4U)); 7357ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 736825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 7377ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7387ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7397ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7407ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return SDValue(); 7417ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 7427ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 743a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// LegalizeOp - We know that the specified value has a legal type, and 744a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// that its operands are legal. Now ensure that the operation itself 745a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// is legal, recursively ensuring that the operands' operations remain 746a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// legal. 747475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) { 74809ec1b058331aadb29a348091611d23892b5c492Chris Lattner if (Op.getOpcode() == ISD::TargetConstant) // Allow illegal target nodes. 74909ec1b058331aadb29a348091611d23892b5c492Chris Lattner return Op; 750fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 751ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif SDNode *Node = Op.getNode(); 7527d2ad624fa749a6d3edac0d94e9c107989c16304Dale Johannesen DebugLoc dl = Node->getDebugLoc(); 753e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner 7541fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 7551fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman assert(getTypeAction(Node->getValueType(i)) == Legal && 7561fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7571fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman 7581fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 7591fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman assert((isTypeLegal(Node->getOperand(i).getValueType()) || 7601fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman Node->getOperand(i).getOpcode() == ISD::TargetConstant) && 7611fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 76345982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 76445982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 765475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 766e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (I != LegalizedNodes.end()) return I->second; 7673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 768475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 769475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result = Op; 770456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner bool isCustom = false; 771fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 7728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Figure out the correct action; the way to query this varies by opcode 7738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::LegalizeAction Action; 7748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman bool SimpleFinishLegalizing = true; 7753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 7768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_W_CHAIN: 7778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_WO_CHAIN: 7788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_VOID: 7798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAARG: 7808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STACKSAVE: 781825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Action = TLI.getOperationAction(Node->getOpcode(), MVT::Other); 7828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 7838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 7848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 7858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 7868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 7878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType()); 7888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 7898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: 7908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 791e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT InnerType = cast<VTSDNode>(Node->getOperand(1))->getVT(); 7928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), InnerType); 7938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 7948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 7953be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SELECT_CC: 7963be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SETCC: 7973be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::BR_CC: { 7983be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CCOperand = Node->getOpcode() == ISD::SELECT_CC ? 4 : 7993be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getOpcode() == ISD::SETCC ? 2 : 1; 8003be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CompareOperand = Node->getOpcode() == ISD::BR_CC ? 2 : 0; 801e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(CompareOperand).getValueType(); 8023be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman ISD::CondCode CCCode = 8033be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman cast<CondCodeSDNode>(Node->getOperand(CCOperand))->get(); 8043be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getCondCodeAction(CCCode, OpVT); 8053be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Action == TargetLowering::Legal) { 8063be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Node->getOpcode() == ISD::SELECT_CC) 8073be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 8083be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getValueType(0)); 8093be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman else 8103be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), OpVT); 8113be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8123be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 8133be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::LOAD: 8158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STORE: 816ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: Model these properly. LOAD and STORE are complicated, and 817ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // STORE expects the unlegalized operand in some cases. 818ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 819ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_START: 8218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_END: 822ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: This shouldn't be necessary. These nodes have special properties 823ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // dealing with the recursive nature of legalization. Removing this 824ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // special case should be done as part of making LegalizeDAG non-recursive. 825ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 826ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: 8288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 8298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SADDO: 8308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SSUBO: 8318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UADDO: 8328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::USUBO: 8338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SMULO: 8348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UMULO: 8358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FPOWI: 8368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 8378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 8388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 839f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // These operations lie about being legal: when they claim to be legal, 840f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // they should actually be expanded. 8418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Action == TargetLowering::Legal) 8438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Expand; 8448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAMPOLINE: 8468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 8478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 8484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // These operations lie about being legal: when they claim to be legal, 8494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // they should actually be custom-lowered. 8504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Action == TargetLowering::Legal) 8524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TargetLowering::Custom; 8538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BUILD_VECTOR: 855b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // A weird case: legalization for BUILD_VECTOR never legalizes the 856b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // operands! 857b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // FIXME: This really sucks... changing it isn't semantically incorrect, 858b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // but it massively pessimizes the code for floating-point BUILD_VECTORs 859b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // because ConstantFP operands get legalized into constant pool loads 860b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // before the BUILD_VECTOR code can see them. It doesn't usually bite, 861b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // though, because BUILD_VECTORS usually get lowered into other nodes 862b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // which get legalized properly. 8638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SimpleFinishLegalizing = false; 864948c1b1cda280c6428dbeaa03a6c2c559dbb93f4Chris Lattner break; 8653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 866d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner if (Node->getOpcode() >= ISD::BUILTIN_OP_END) { 8678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Legal; 8688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 8698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 8718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 873d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner 8748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (SimpleFinishLegalizing) { 8758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVector<SDValue, 8> Ops, ResultVals; 8768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 8778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops.push_back(LegalizeOp(Node->getOperand(i))); 8788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 8798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: break; 8808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR: 8818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRIND: 8828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_JT: 8838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_CC: 8848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRCOND: 8858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Branches tweak the chain to include LastCALLSEQ_END 886825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ops[0] = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Ops[0], 8878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END); 8888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[0] = LegalizeOp(Ops[0]); 8898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 8908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SHL: 8928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRL: 8938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRA: 8948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTL: 8958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTR: 8968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Legalizing shifts/rotates requires adjusting the shift amount 8978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // to the appropriate width. 8988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!Ops[1].getValueType().isVector()) 8998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[1] = LegalizeOp(DAG.getShiftAmountOperand(Ops[1])); 9008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Result = DAG.UpdateNodeOperands(Result.getValue(0), Ops.data(), 9048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops.size()); 9058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Action) { 9068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Legal: 907d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 9088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Result.getValue(i)); 9098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Custom: 9118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FIXME: The handling for custom lowering with multiple results is 9128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // a complete mess. 9138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = TLI.LowerOperation(Result, DAG); 9148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Tmp1.getNode()) { 9158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) { 9168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (e == 1) 9178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1); 9188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 9198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1.getValue(i)); 9208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FALL THROUGH 9258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Expand: 9268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ExpandNode(Result.getNode(), ResultVals); 9278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Promote: 9298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman PromoteNode(Result.getNode(), ResultVals); 9308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!ResultVals.empty()) { 9338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = ResultVals.size(); i != e; ++i) { 9348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (ResultVals[i] != SDValue(Node, i)) 9358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals[i] = LegalizeOp(ResultVals[i]); 9368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman AddLegalizedOperand(SDValue(Node, i), ResultVals[i]); 9378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman return ResultVals[Op.getResNo()]; 939d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner } 9408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 9438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: 944e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#ifndef NDEBUG 94539833585556a69de12053ca1e104fe7edfd86cbdDan Gohman cerr << "NODE: "; Node->dump(&DAG); cerr << "\n"; 946e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#endif 947c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Do not know how to legalize this operator!"); 94898ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman 949b2827b0901162169bb2692b77a839c9767849134Chris Lattner case ISD::BUILD_VECTOR: 950b2827b0901162169bb2692b77a839c9767849134Chris Lattner switch (TLI.getOperationAction(ISD::BUILD_VECTOR, Node->getValueType(0))) { 951c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 9522332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner case TargetLowering::Custom: 9532332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Tmp3 = TLI.LowerOperation(Result, DAG); 954ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()) { 9552332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Result = Tmp3; 9562332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 9572332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 9582332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner // FALLTHROUGH 959ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner case TargetLowering::Expand: 960ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandBUILD_VECTOR(Result.getNode()); 961b2827b0901162169bb2692b77a839c9767849134Chris Lattner break; 9622332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 9632332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 9646831a815999dde4cf801e2076e66b4943964daf2Chris Lattner case ISD::CALLSEQ_START: { 9656831a815999dde4cf801e2076e66b4943964daf2Chris Lattner SDNode *CallEnd = FindCallEndFromCallStart(Node); 966fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 9676831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Recursively Legalize all of the inputs of the call end that do not lead 9686831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // to this call start. This ensures that any libcalls that need be inserted 9696831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // are inserted *before* the CALLSEQ_START. 97000755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner {SmallPtrSet<SDNode*, 32> NodesLeadingTo; 9716831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = CallEnd->getNumOperands(); i != e; ++i) 972ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif LegalizeAllNodesNotLeadingTo(CallEnd->getOperand(i).getNode(), Node, 973c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo); 974c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 9756831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 9766831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Now that we legalized all of the inputs (which may have inserted 9776831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // libcalls) create the new CALLSEQ_START node. 9786831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 9796831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 9806831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Merge in the last call, to ensure that this call start after the last 9816831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // call ended. 982c5d7d7c715f7b7a4eeea1ceaafefc3d1d6df2addChris Lattner if (LastCALLSEQ_END.getOpcode() != ISD::EntryToken) { 983825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 984ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp1, LastCALLSEQ_END); 985b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner Tmp1 = LegalizeOp(Tmp1); 986b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner } 987fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 9886831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Do not try to legalize the target-specific arguments (#1+). 9896831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Tmp1 != Node->getOperand(0)) { 990475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 9916831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Ops[0] = Tmp1; 992f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 9936831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 994fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 9956831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Remember that the CALLSEQ_START is legalized. 9964b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(0), Result); 9974b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) // If this has a flag result, remember it. 9984b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 999fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10006831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Now that the callseq_start and all of the non-call nodes above this call 1001fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // sequence have been legalized, legalize the call itself. During this 10026831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // process, no libcalls can/will be inserted, guaranteeing that no calls 10036831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // can overlap. 10046831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "Inconsistent sequentialization of calls!"); 10056831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Note that we are selecting this call! 1006475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LastCALLSEQ_END = SDValue(CallEnd, 0); 10076831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = true; 1008fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10096831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call, starting from the CALLSEQ_END. 10106831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(LastCALLSEQ_END); 10116831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "CALLSEQ_END should have cleared this!"); 10126831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 10136831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 101416cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner case ISD::CALLSEQ_END: 10156831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the CALLSEQ_START node hasn't been legalized first, legalize it. This 10166831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // will cause this node to be legalized as well as handling libcalls right. 1017ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (LastCALLSEQ_END.getNode() != Node) { 1018475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LegalizeOp(SDValue(FindCallStartFromCallEnd(Node), 0)); 1019475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 10206831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(I != LegalizedNodes.end() && 10216831a815999dde4cf801e2076e66b4943964daf2Chris Lattner "Legalizing the call start should have legalized this node!"); 10226831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return I->second; 10236831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1024fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1025fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, the call start has been legalized and everything is going 10266831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // according to plan. Just legalize ourselves normally here. 10273e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 102870814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // Do not try to legalize the target-specific arguments (#1+), except for 102970814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // an optional flag input. 1030825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Node->getOperand(Node->getNumOperands()-1).getValueType() != MVT::Flag){ 103170814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0)) { 1032475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 103370814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 1034f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 103570814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 103670814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } else { 103770814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(Node->getNumOperands()-1)); 103870814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0) || 103970814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 != Node->getOperand(Node->getNumOperands()-1)) { 1040475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 104170814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 104270814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops.back() = Tmp2; 1043f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 104470814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 10456a5428934ba6159c1acc541944332e51a6cfa59aChris Lattner } 10464b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner assert(IsLegalizingCall && "Call sequence imbalance between start/end?"); 10476831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // This finishes up call legalization. 10486831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = false; 1049fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10504b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner // If the CALLSEQ_END node has a flag, remember that we legalized it. 1051475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Result.getValue(0)); 10524b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) 1053475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Result.getValue(1)); 105499a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Result.getValue(Op.getResNo()); 1055f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::LOAD: { 1056466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng LoadSDNode *LD = cast<LoadSDNode>(Node); 1057466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = LegalizeOp(LD->getChain()); // Legalize the chain. 1058466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp2 = LegalizeOp(LD->getBasePtr()); // Legalize the base pointer. 10592d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 1060466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng ISD::LoadExtType ExtType = LD->getExtensionType(); 1061466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng if (ExtType == ISD::NON_EXTLOAD) { 1062e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1063466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, LD->getOffset()); 1064466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = Result.getValue(0); 1065466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = Result.getValue(1); 1066fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1067466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng switch (TLI.getOperationAction(Node->getOpcode(), VT)) { 1068c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 1069f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1070f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned load and the target doesn't support it, 1071f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1072f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (!TLI.allowsUnalignedMemoryAccesses()) { 1073f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio unsigned ABIAlignment = TLI.getTargetData()-> 107423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson getABITypeAlignment(LD->getMemoryVT().getTypeForEVT(*DAG.getContext())); 1075f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (LD->getAlignment() < ABIAlignment){ 1076debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 1077debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson DAG, TLI); 1078f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp3 = Result.getOperand(0); 1079f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp4 = Result.getOperand(1); 1080907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp3 = LegalizeOp(Tmp3); 1081907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp4 = LegalizeOp(Tmp4); 1082f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1083f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1084f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 1085466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Custom: 1086466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = TLI.LowerOperation(Tmp3, DAG); 1087ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) { 1088466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = LegalizeOp(Tmp1); 1089466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1090466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1091466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1092466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Promote: { 1093466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Only promote a load of vector type to another. 109483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Cannot promote this load!"); 1095466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Change base type to a different vector type. 1096e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), VT); 1097466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng 1098ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp1 = DAG.getLoad(NVT, dl, Tmp1, Tmp2, LD->getSrcValue(), 1099d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman LD->getSrcValueOffset(), 1100d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman LD->isVolatile(), LD->getAlignment()); 1101b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen Tmp3 = LegalizeOp(DAG.getNode(ISD::BIT_CONVERT, dl, VT, Tmp1)); 110241f6cbbeb21d7d4376b8c0302b9766c3e43be5f2Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1103466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1104f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 1105466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1106fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Since loads produce two values, make sure to remember that we 1107466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // legalized both of them. 1108475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp3); 1109475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp4); 111099a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Op.getResNo() ? Tmp4 : Tmp3; 1111466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } else { 1112e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SrcVT = LD->getMemoryVT(); 111383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SrcWidth = SrcVT.getSizeInBits(); 1114f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands int SVOffset = LD->getSrcValueOffset(); 1115f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned Alignment = LD->getAlignment(); 1116f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands bool isVolatile = LD->isVolatile(); 1117f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 111883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (SrcWidth != SrcVT.getStoreSizeInBits() && 1119f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Some targets pretend to have an i1 loading operation, and actually 1120f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // load an i8. This trick is correct for ZEXTLOAD because the top 7 1121f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // bits are guaranteed to be zero; it helps the optimizers understand 1122f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // that these bits are zero. It is also useful for EXTLOAD, since it 1123f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // tells the optimizers that those bits are undefined. It would be 1124f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // nice to have an effective generic way of getting these benefits... 1125f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Until such a way is found, don't insist on promoting i1 here. 1126825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (SrcVT != MVT::i1 || 1127825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson TLI.getLoadExtAction(ExtType, MVT::i1) == TargetLowering::Promote)) { 1128f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Promote to a byte-sized load if not loading an integral number of 1129f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // bytes. For example, promote EXTLOAD:i20 -> EXTLOAD:i24. 113083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned NewWidth = SrcVT.getStoreSizeInBits(); 113123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = EVT::getIntegerVT(*DAG.getContext(), NewWidth); 1132475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch; 1133f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1134f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // The extra bits are guaranteed to be zero, since we stored them that 1135f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // way. A zext load from NVT thus automatically gives zext from SrcVT. 1136f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1137f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ISD::LoadExtType NewExtType = 1138f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ExtType == ISD::ZEXTLOAD ? ISD::ZEXTLOAD : ISD::EXTLOAD; 1139f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1140ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getExtLoad(NewExtType, dl, Node->getValueType(0), 1141f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1, Tmp2, LD->getSrcValue(), SVOffset, 1142f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands NVT, isVolatile, Alignment); 1143f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1144f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Ch = Result.getValue(1); // The chain. 1145f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1146f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (ExtType == ISD::SEXTLOAD) 1147f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Having the top bits zero doesn't help when sign extending. 1148fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 1149ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), 1150f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result, DAG.getValueType(SrcVT)); 1151f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands else if (ExtType == ISD::ZEXTLOAD || NVT == Result.getValueType()) 1152f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // All the top bits are guaranteed to be zero - inform the optimizers. 1153fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::AssertZext, dl, 1154ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), Result, 1155f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getValueType(SrcVT)); 1156f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1157f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); 1158f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Ch); 1159f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else if (SrcWidth & (SrcWidth - 1)) { 1160f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // If not loading a power-of-2 number of bits, expand as two loads. 116183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(SrcVT.isExtended() && !SrcVT.isVector() && 1162f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands "Unsupported extload!"); 1163f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned RoundWidth = 1 << Log2_32(SrcWidth); 1164f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(RoundWidth < SrcWidth); 1165f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned ExtraWidth = SrcWidth - RoundWidth; 1166f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(ExtraWidth < RoundWidth); 1167f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 1168f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands "Load size not an integral number of bytes!"); 116923b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 117023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 1171475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi, Ch; 1172f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned IncrementSize; 1173f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1174f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (TLI.isLittleEndian()) { 1175f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // EXTLOAD:i24 -> ZEXTLOAD:i16 | (shl EXTLOAD@+2:i8, 16) 1176f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the bottom RoundWidth bits. 1177ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, 1178ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Tmp1, Tmp2, 1179f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset, RoundVT, isVolatile, 1180f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Alignment); 1181f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1182f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the remaining ExtraWidth bits. 1183f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands IncrementSize = RoundWidth / 8; 1184ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 1185f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getIntPtrConstant(IncrementSize)); 1186ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2, 1187f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset + IncrementSize, 1188f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ExtraVT, isVolatile, 1189f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands MinAlign(Alignment, IncrementSize)); 1190f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1191f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Build a factor node to remember that this load is independent of the 1192f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // other one. 1193825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 1194f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Hi.getValue(1)); 1195f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1196f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Move the top bits to the right place. 1197ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 1198f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getConstant(RoundWidth, TLI.getShiftAmountTy())); 1199f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1200f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Join the hi and lo parts. 1201ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 1202f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 1203f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Big endian - avoid unaligned loads. 1204f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // EXTLOAD:i24 -> (shl EXTLOAD:i16, 8) | ZEXTLOAD@+2:i8 1205f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the top RoundWidth bits. 1206ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2, 1207f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset, RoundVT, isVolatile, 1208f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Alignment); 1209f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1210f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the remaining ExtraWidth bits. 1211f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands IncrementSize = RoundWidth / 8; 1212ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 1213f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getIntPtrConstant(IncrementSize)); 1214fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, 1215ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Tmp1, Tmp2, 1216f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset + IncrementSize, 1217f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ExtraVT, isVolatile, 1218f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands MinAlign(Alignment, IncrementSize)); 1219f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1220f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Build a factor node to remember that this load is independent of the 1221f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // other one. 1222825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 1223f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Hi.getValue(1)); 1224f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1225f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Move the top bits to the right place. 1226ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 1227f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy())); 1228f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1229f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Join the hi and lo parts. 1230ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 1231f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1232f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1233f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); 1234f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Ch); 1235f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else { 12360329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng switch (TLI.getLoadExtAction(ExtType, SrcVT)) { 1237c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 1238f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Custom: 1239f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands isCustom = true; 1240f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // FALLTHROUGH 1241f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Legal: 1242f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, LD->getOffset()); 1243f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = Result.getValue(0); 1244f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = Result.getValue(1); 1245f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1246f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (isCustom) { 1247f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp3 = TLI.LowerOperation(Result, DAG); 1248ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()) { 1249f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Tmp3); 1250f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Tmp3.getValue(1)); 1251f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1252f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else { 1253f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // If this is an unaligned load and the target doesn't support it, 1254f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // expand it. 1255f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (!TLI.allowsUnalignedMemoryAccesses()) { 1256f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned ABIAlignment = TLI.getTargetData()-> 125723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson getABITypeAlignment(LD->getMemoryVT().getTypeForEVT(*DAG.getContext())); 1258f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (LD->getAlignment() < ABIAlignment){ 1259debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 1260debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson DAG, TLI); 1261f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = Result.getOperand(0); 1262f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = Result.getOperand(1); 1263f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Tmp1); 1264f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Tmp2); 1265f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1266f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1267f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1268f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 1269f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Expand: 1270f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // f64 = EXTLOAD f32 should expand to LOAD, FP_EXTEND 1271825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (SrcVT == MVT::f32 && Node->getValueType(0) == MVT::f64) { 1272ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen SDValue Load = DAG.getLoad(SrcVT, dl, Tmp1, Tmp2, LD->getSrcValue(), 1273f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValueOffset(), 1274f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->isVolatile(), LD->getAlignment()); 1275fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::FP_EXTEND, dl, 1276ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Load); 1277f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); // Relegalize new nodes. 1278f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Load.getValue(1)); 1279f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 1280f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1281f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(ExtType != ISD::EXTLOAD &&"EXTLOAD should always be supported!"); 1282f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Turn the unsupported load into an EXTLOAD followed by an explicit 1283f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // zero/sign extend inreg. 1284ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getExtLoad(ISD::EXTLOAD, dl, Node->getValueType(0), 1285f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1, Tmp2, LD->getSrcValue(), 1286f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValueOffset(), SrcVT, 1287f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->isVolatile(), LD->getAlignment()); 1288475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ValRes; 1289f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (ExtType == ISD::SEXTLOAD) 1290ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen ValRes = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 1291ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), 1292f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result, DAG.getValueType(SrcVT)); 1293f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands else 1294ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen ValRes = DAG.getZeroExtendInReg(Result, dl, SrcVT); 1295f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(ValRes); // Relegalize new nodes. 1296f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Result.getValue(1)); // Relegalize new nodes. 1297466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1298466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 12999d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth } 1300f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1301466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Since loads produce two values, make sure to remember that we legalized 1302466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // both of them. 1303475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp1); 1304475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp2); 130599a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Op.getResNo() ? Tmp2 : Tmp1; 130601ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 130701ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 1308f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::STORE: { 13098b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng StoreSDNode *ST = cast<StoreSDNode>(Node); 13108b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = LegalizeOp(ST->getChain()); // Legalize the chain. 13118b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp2 = LegalizeOp(ST->getBasePtr()); // Legalize the pointer. 1312d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman int SVOffset = ST->getSrcValueOffset(); 1313d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman unsigned Alignment = ST->getAlignment(); 1314d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman bool isVolatile = ST->isVolatile(); 13158b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 13168b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng if (!ST->isTruncatingStore()) { 13177ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (SDNode *OptStore = OptimizeFloatStore(ST).getNode()) { 13187ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Result = SDValue(OptStore, 0); 13197ef3d178660b82d1571757e49f44b004d772a116Eli Friedman break; 1320d93d46ee7e0a0e539d42139b85c71b2b8c3968feChris Lattner } 1321fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1322957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman { 13238b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp3 = LegalizeOp(ST->getValue()); 1324fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2, 13258b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng ST->getOffset()); 13268b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 1327e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp3.getValueType(); 13288b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng switch (TLI.getOperationAction(ISD::STORE, VT)) { 1329c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 1330f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1331f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned store and the target doesn't support it, 1332f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1333f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (!TLI.allowsUnalignedMemoryAccesses()) { 1334f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio unsigned ABIAlignment = TLI.getTargetData()-> 133523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson getABITypeAlignment(ST->getMemoryVT().getTypeForEVT(*DAG.getContext())); 1336f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (ST->getAlignment() < ABIAlignment) 1337ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), DAG, 1338f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio TLI); 1339f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1340f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 13418b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Custom: 13428b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = TLI.LowerOperation(Result, DAG); 1343ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) Result = Tmp1; 13448b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 13458b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Promote: 134683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Unknown legal promote case!"); 1347fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Tmp3 = DAG.getNode(ISD::BIT_CONVERT, dl, 13488b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng TLI.getTypeToPromoteTo(ISD::STORE, VT), Tmp3); 1349ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, 1350d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman ST->getSrcValue(), SVOffset, isVolatile, 1351d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman Alignment); 13528b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 13538b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 13542efce0a589e2a688a1a06b5dc2ed0db32ae79924Chris Lattner break; 1355f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 13568b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } else { 1357957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman Tmp3 = LegalizeOp(ST->getValue()); 13587e857201f387d004571e6058e2ea709163500f38Duncan Sands 1359e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT StVT = ST->getMemoryVT(); 136083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned StWidth = StVT.getSizeInBits(); 13617e857201f387d004571e6058e2ea709163500f38Duncan Sands 136283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (StWidth != StVT.getStoreSizeInBits()) { 13637e857201f387d004571e6058e2ea709163500f38Duncan Sands // Promote to a byte-sized store with upper bits zero if not 13647e857201f387d004571e6058e2ea709163500f38Duncan Sands // storing an integral number of bytes. For example, promote 13657e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i1 X -> TRUNCSTORE:i8 (and X, 1) 136623b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = EVT::getIntegerVT(*DAG.getContext(), StVT.getStoreSizeInBits()); 1367ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getZeroExtendInReg(Tmp3, dl, StVT); 1368ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 13697e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset, NVT, isVolatile, Alignment); 13707e857201f387d004571e6058e2ea709163500f38Duncan Sands } else if (StWidth & (StWidth - 1)) { 13717e857201f387d004571e6058e2ea709163500f38Duncan Sands // If not storing a power-of-2 number of bits, expand as two stores. 137283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(StVT.isExtended() && !StVT.isVector() && 13737e857201f387d004571e6058e2ea709163500f38Duncan Sands "Unsupported truncstore!"); 13747e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned RoundWidth = 1 << Log2_32(StWidth); 13757e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(RoundWidth < StWidth); 13767e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned ExtraWidth = StWidth - RoundWidth; 13777e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(ExtraWidth < RoundWidth); 13787e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 13797e857201f387d004571e6058e2ea709163500f38Duncan Sands "Store size not an integral number of bytes!"); 138023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 138123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 1382475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 13837e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned IncrementSize; 13847e857201f387d004571e6058e2ea709163500f38Duncan Sands 13857e857201f387d004571e6058e2ea709163500f38Duncan Sands if (TLI.isLittleEndian()) { 13867e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 X, TRUNCSTORE@+2:i8 (srl X, 16) 13877e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the bottom RoundWidth bits. 1388ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 13897e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset, RoundVT, 13907e857201f387d004571e6058e2ea709163500f38Duncan Sands isVolatile, Alignment); 13917e857201f387d004571e6058e2ea709163500f38Duncan Sands 13927e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 13937e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1394ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 13957e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1396ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 13977e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(RoundWidth, TLI.getShiftAmountTy())); 1398ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), 13997e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset + IncrementSize, ExtraVT, isVolatile, 14007e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 14017e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 14027e857201f387d004571e6058e2ea709163500f38Duncan Sands // Big endian - avoid unaligned stores. 14037e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 (srl X, 8), TRUNCSTORE@+2:i8 X 14047e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the top RoundWidth bits. 1405ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 14067e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy())); 1407ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), 1408ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen SVOffset, RoundVT, isVolatile, Alignment); 14097e857201f387d004571e6058e2ea709163500f38Duncan Sands 14107e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14117e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1412ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14137e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1414ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14157e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset + IncrementSize, ExtraVT, isVolatile, 14167e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 14177e857201f387d004571e6058e2ea709163500f38Duncan Sands } 1418c7029805ef35ce9805931067b841e6af11db382eChris Lattner 14197e857201f387d004571e6058e2ea709163500f38Duncan Sands // The order of the stores doesn't matter. 1420825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Result = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 14217e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 14227e857201f387d004571e6058e2ea709163500f38Duncan Sands if (Tmp1 != ST->getChain() || Tmp3 != ST->getValue() || 14237e857201f387d004571e6058e2ea709163500f38Duncan Sands Tmp2 != ST->getBasePtr()) 14247e857201f387d004571e6058e2ea709163500f38Duncan Sands Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2, 14257e857201f387d004571e6058e2ea709163500f38Duncan Sands ST->getOffset()); 14267e857201f387d004571e6058e2ea709163500f38Duncan Sands 14277e857201f387d004571e6058e2ea709163500f38Duncan Sands switch (TLI.getTruncStoreAction(ST->getValue().getValueType(), StVT)) { 1428c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 14297e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Legal: 14307e857201f387d004571e6058e2ea709163500f38Duncan Sands // If this is an unaligned store and the target doesn't support it, 14317e857201f387d004571e6058e2ea709163500f38Duncan Sands // expand it. 14327e857201f387d004571e6058e2ea709163500f38Duncan Sands if (!TLI.allowsUnalignedMemoryAccesses()) { 14337e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned ABIAlignment = TLI.getTargetData()-> 143423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson getABITypeAlignment(ST->getMemoryVT().getTypeForEVT(*DAG.getContext())); 14357e857201f387d004571e6058e2ea709163500f38Duncan Sands if (ST->getAlignment() < ABIAlignment) 1436ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), DAG, 14377e857201f387d004571e6058e2ea709163500f38Duncan Sands TLI); 14387e857201f387d004571e6058e2ea709163500f38Duncan Sands } 14397e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 14407e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Custom: 14417e857201f387d004571e6058e2ea709163500f38Duncan Sands Result = TLI.LowerOperation(Result, DAG); 14427e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 14437e857201f387d004571e6058e2ea709163500f38Duncan Sands case Expand: 14447e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i16 i32 -> STORE i16 14457e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(isTypeLegal(StVT) && "Do not know how to expand this store!"); 1446ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getNode(ISD::TRUNCATE, dl, StVT, Tmp3); 1447ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 1448ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen SVOffset, isVolatile, Alignment); 14497e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 1450f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 14518b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 14523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 14533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 1454f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 145545b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 14564ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner assert(Result.getValueType() == Op.getValueType() && 14574ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner "Bad legalization!"); 1458fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1459456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner // Make sure that the generated code is itself legal. 1460456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner if (Result != Op) 1461456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner Result = LegalizeOp(Result); 14623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 146345982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 146445982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 146545982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner AddLegalizedOperand(Op, Result); 14663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return Result; 14673e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 14683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 14693d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli FriedmanSDValue SelectionDAGLegalize::ExpandExtractFromVectorThroughStack(SDValue Op) { 14703d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Vec = Op.getOperand(0); 14713d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Idx = Op.getOperand(1); 14723d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DebugLoc dl = Op.getDebugLoc(); 14733d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Store the value to a temporary stack slot, then LOAD the returned part. 14743d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue StackPtr = DAG.CreateStackTemporary(Vec.getValueType()); 14753d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Vec, StackPtr, NULL, 0); 14763d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 14773d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Add the offset to the index. 14782a35b1c54ba55a917e01e0043efcf67e20505953Eli Friedman unsigned EltSize = 14792a35b1c54ba55a917e01e0043efcf67e20505953Eli Friedman Vec.getValueType().getVectorElementType().getSizeInBits()/8; 14803d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::MUL, dl, Idx.getValueType(), Idx, 14813d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DAG.getConstant(EltSize, Idx.getValueType())); 14823d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 14833d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman if (Idx.getValueType().bitsGT(TLI.getPointerTy())) 14843d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::TRUNCATE, dl, TLI.getPointerTy(), Idx); 14853d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman else 14863d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::ZERO_EXTEND, dl, TLI.getPointerTy(), Idx); 14873d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 14883d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman StackPtr = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, StackPtr); 14893d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 1490c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman if (Op.getValueType().isVector()) 1491c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman return DAG.getLoad(Op.getValueType(), dl, Ch, StackPtr, NULL, 0); 1492c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman else 1493c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman return DAG.getExtLoad(ISD::EXTLOAD, dl, Op.getValueType(), Ch, StackPtr, 1494c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman NULL, 0, Vec.getValueType().getVectorElementType()); 14953d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman} 14963d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 14977ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::ExpandVectorBuildThroughStack(SDNode* Node) { 14987ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We can't handle this case efficiently. Allocate a sufficiently 14997ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // aligned object on the stack, store each element into it, then load 15007ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // the result as a vector. 15017ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Create the stack frame object. 1502e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1503e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(0).getValueType(); 15047ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15057ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue FIPtr = DAG.CreateStackTemporary(VT); 15067ef3d178660b82d1571757e49f44b004d772a116Eli Friedman int FI = cast<FrameIndexSDNode>(FIPtr.getNode())->getIndex(); 15077ef3d178660b82d1571757e49f44b004d772a116Eli Friedman const Value *SV = PseudoSourceValue::getFixedStack(FI); 15087ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15097ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Emit a store of each element to the stack slot. 15107ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SmallVector<SDValue, 8> Stores; 15117ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned TypeByteSize = OpVT.getSizeInBits() / 8; 15127ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Store (in the right endianness) the elements to memory. 15137ef3d178660b82d1571757e49f44b004d772a116Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 15147ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Ignore undef elements. 15157ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (Node->getOperand(i).getOpcode() == ISD::UNDEF) continue; 15167ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15177ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Offset = TypeByteSize*i; 15187ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15197ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Idx = DAG.getConstant(Offset, FIPtr.getValueType()); 15207ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Idx = DAG.getNode(ISD::ADD, dl, FIPtr.getValueType(), FIPtr, Idx); 15217ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15227ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Stores.push_back(DAG.getStore(DAG.getEntryNode(), dl, Node->getOperand(i), 15237ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Idx, SV, Offset)); 15247ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 15257ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15267ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue StoreChain; 15277ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (!Stores.empty()) // Not all undef elements? 1528825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson StoreChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 15297ef3d178660b82d1571757e49f44b004d772a116Eli Friedman &Stores[0], Stores.size()); 15307ef3d178660b82d1571757e49f44b004d772a116Eli Friedman else 15317ef3d178660b82d1571757e49f44b004d772a116Eli Friedman StoreChain = DAG.getEntryNode(); 15327ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15337ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Result is a load from the stack slot. 15347ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getLoad(VT, dl, StoreChain, FIPtr, SV, 0); 15357ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 15367ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15374bc8c718218159fe410462f6e3670e7cb76c0c04Eli FriedmanSDValue SelectionDAGLegalize::ExpandFCOPYSIGN(SDNode* Node) { 15384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = Node->getOperand(0); 15404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = Node->getOperand(1); 1541825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert((Tmp2.getValueType() == MVT::f32 || 1542825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp2.getValueType() == MVT::f64) && 15434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman "Ugly special-cased code!"); 15444bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Get the sign bit of the RHS. 15454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignBit; 1546825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson EVT IVT = Tmp2.getValueType() == MVT::f64 ? MVT::i64 : MVT::i32; 15474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (isTypeLegal(IVT)) { 15484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = DAG.getNode(ISD::BIT_CONVERT, dl, IVT, Tmp2); 15494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else { 15504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert(isTypeLegal(TLI.getPointerTy()) && 1551825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (TLI.getPointerTy() == MVT::i32 || 1552825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson TLI.getPointerTy() == MVT::i64) && 15534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman "Legal type for load?!"); 15544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue StackPtr = DAG.CreateStackTemporary(Tmp2.getValueType()); 15554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue StorePtr = StackPtr, LoadPtr = StackPtr; 15564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Ch = 15574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getStore(DAG.getEntryNode(), dl, Tmp2, StorePtr, NULL, 0); 1558825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Tmp2.getValueType() == MVT::f64 && TLI.isLittleEndian()) 15594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LoadPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), 15604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LoadPtr, DAG.getIntPtrConstant(4)); 15614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = DAG.getExtLoad(ISD::SEXTLOAD, dl, TLI.getPointerTy(), 1562825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ch, LoadPtr, NULL, 0, MVT::i32); 15634bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 15644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = 15654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getSetCC(dl, TLI.getSetCCResultType(SignBit.getValueType()), 15664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit, DAG.getConstant(0, SignBit.getValueType()), 15674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETLT); 15684bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Get the absolute value of the result. 15694bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue AbsVal = DAG.getNode(ISD::FABS, dl, Tmp1.getValueType(), Tmp1); 15704bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Select between the nabs and abs value based on the sign bit of 15714bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // the input. 15724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getNode(ISD::SELECT, dl, AbsVal.getValueType(), SignBit, 15734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getNode(ISD::FNEG, dl, AbsVal.getValueType(), AbsVal), 15744bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman AbsVal); 15754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 15764bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 15774bc8c718218159fe410462f6e3670e7cb76c0c04Eli FriedmanSDValue SelectionDAGLegalize::ExpandDBG_STOPPOINT(SDNode* Node) { 15784bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DwarfWriter *DW = DAG.getDwarfWriter(); 15804bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman bool useDEBUG_LOC = TLI.isOperationLegalOrCustom(ISD::DEBUG_LOC, 1581825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::Other); 1582825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson bool useLABEL = TLI.isOperationLegalOrCustom(ISD::DBG_LABEL, MVT::Other); 15834bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 15844bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman const DbgStopPointSDNode *DSP = cast<DbgStopPointSDNode>(Node); 15854bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman GlobalVariable *CU_GV = cast<GlobalVariable>(DSP->getCompileUnit()); 15864bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (DW && (useDEBUG_LOC || useLABEL) && !CU_GV->isDeclaration()) { 15874bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DICompileUnit CU(cast<GlobalVariable>(DSP->getCompileUnit())); 15884bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 15894bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Line = DSP->getLine(); 15904bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Col = DSP->getColumn(); 15914bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 15924bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (OptLevel == CodeGenOpt::None) { 15934bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // A bit self-referential to have DebugLoc on Debug_Loc nodes, but it 15944bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // won't hurt anything. 15954bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (useDEBUG_LOC) { 1596825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::DEBUG_LOC, dl, MVT::Other, Node->getOperand(0), 1597825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson DAG.getConstant(Line, MVT::i32), 1598825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson DAG.getConstant(Col, MVT::i32), 15994bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getSrcValue(CU.getGV())); 16004bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else { 16014bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned ID = DW->RecordSourceLine(Line, Col, CU); 16024bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getLabel(ISD::DBG_LABEL, dl, Node->getOperand(0), ID); 16034bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16044bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16054bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16064bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return Node->getOperand(0); 16074bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16084bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16094bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedmanvoid SelectionDAGLegalize::ExpandDYNAMIC_STACKALLOC(SDNode* Node, 16104bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results) { 16114bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned SPReg = TLI.getStackPointerRegisterToSaveRestore(); 16124bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert(SPReg && "Target cannot require DYNAMIC_STACKALLOC expansion and" 16134bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman " not tell us which reg is the stack pointer!"); 16144bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 1615e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 16164bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = SDValue(Node, 0); 16174bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = SDValue(Node, 1); 16184bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp3 = Node->getOperand(2); 16194bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Tmp1.getOperand(0); 16204bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Chain the dynamic stack allocation so that it doesn't modify the stack 16224bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // pointer when other instructions are using the stack. 16234bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(0, true)); 16244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16254bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Size = Tmp2.getOperand(1); 16264bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SP = DAG.getCopyFromReg(Chain, dl, SPReg, VT); 16274bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = SP.getValue(1); 16284bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Align = cast<ConstantSDNode>(Tmp3)->getZExtValue(); 16294bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned StackAlign = 16304bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getTargetMachine().getFrameInfo()->getStackAlignment(); 16314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Align > StackAlign) 16324bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SP = DAG.getNode(ISD::AND, dl, VT, SP, 16334bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getConstant(-(uint64_t)Align, VT)); 16344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, SP, Size); // Value 16354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCopyToReg(Chain, dl, SPReg, Tmp1); // Output chain 16364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp2 = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(0, true), 16384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getIntPtrConstant(0, true), SDValue()); 16394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 16414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp2); 16424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16447f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// LegalizeSetCCCondCode - Legalize a SETCC with given LHS and RHS and 16457f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// condition code CC on the current target. This routine assumes LHS and rHS 16467f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// have already been legalized by LegalizeSetCCOperands. It expands SETCC with 16477f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// illegal condition code into AND / OR of multiple SETCC values. 1648e50ed30282bb5b4a9ed952580523f2dda16215acOwen Andersonvoid SelectionDAGLegalize::LegalizeSetCCCondCode(EVT VT, 16497f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng SDValue &LHS, SDValue &RHS, 1650bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue &CC, 1651bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl) { 1652e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = LHS.getValueType(); 16537f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CCCode = cast<CondCodeSDNode>(CC)->get(); 16547f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (TLI.getCondCodeAction(CCCode, OpVT)) { 1655c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown condition code action!"); 16567f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Legal: 16577f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // Nothing to do. 16587f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 16597f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Expand: { 16607f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CC1 = ISD::SETCC_INVALID, CC2 = ISD::SETCC_INVALID; 16617f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng unsigned Opc = 0; 16627f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (CCCode) { 1663c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Don't know how to expand this condition!"); 1664e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETO; Opc = ISD::AND; break; 1665e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGT: CC1 = ISD::SETGT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1666e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGE: CC1 = ISD::SETGE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1667e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLT: CC1 = ISD::SETLT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1668e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLE: CC1 = ISD::SETLE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1669e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETONE: CC1 = ISD::SETNE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1670e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1671e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGT: CC1 = ISD::SETGT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1672e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGE: CC1 = ISD::SETGE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1673e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULT: CC1 = ISD::SETLT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1674e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULE: CC1 = ISD::SETLE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1675e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUNE: CC1 = ISD::SETNE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 16767f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // FIXME: Implement more expansions. 16777f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 16787f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 1679bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC1 = DAG.getSetCC(dl, VT, LHS, RHS, CC1); 1680bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC2 = DAG.getSetCC(dl, VT, LHS, RHS, CC2); 1681bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen LHS = DAG.getNode(Opc, dl, VT, SetCC1, SetCC2); 16827f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng RHS = SDValue(); 16837f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng CC = SDValue(); 16847f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 16857f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 16867f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 16877f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng} 16887f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 16891401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// EmitStackConvert - Emit a store/load combination to the stack. This stores 16901401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// SrcOp to a stack slot of type SlotVT, truncating it if needed. It then does 16911401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// a load from the stack slot to DestVT, extending it if needed. 16921401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// The resultant code need not be legal. 1693475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::EmitStackConvert(SDValue SrcOp, 1694e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SlotVT, 1695e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 16968a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 169735481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Create the stack frame object. 1698ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson unsigned SrcAlign = 1699ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getTargetData()->getPrefTypeAlignment(SrcOp.getValueType(). 170023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson getTypeForEVT(*DAG.getContext())); 1701475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FIPtr = DAG.CreateStackTemporary(SlotVT, SrcAlign); 1702fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1703bbbbb9c3dd4160990f856854d16a3beaead1f354Dan Gohman FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(FIPtr); 170469de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman int SPFI = StackPtrFI->getIndex(); 170515b3830bcda4f9958abf1c65e6e1c64c5cbb484dDan Gohman const Value *SV = PseudoSourceValue::getFixedStack(SPFI); 170615b3830bcda4f9958abf1c65e6e1c64c5cbb484dDan Gohman 170783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SrcSize = SrcOp.getValueType().getSizeInBits(); 170883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SlotSize = SlotVT.getSizeInBits(); 170983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned DestSize = DestVT.getSizeInBits(); 1710ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson unsigned DestAlign = 171123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson TLI.getTargetData()->getPrefTypeAlignment(DestVT.getTypeForEVT(*DAG.getContext())); 1712fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17131401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // Emit a store to the stack slot. Use a truncstore if the input value is 17141401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // later than DestVT. 1715475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store; 1716fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17171401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SrcSize > SlotSize) 17188a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getTruncStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 171915b3830bcda4f9958abf1c65e6e1c64c5cbb484dDan Gohman SV, 0, SlotVT, false, SrcAlign); 17201401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner else { 17211401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SrcSize == SlotSize && "Invalid store"); 17228a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 172315b3830bcda4f9958abf1c65e6e1c64c5cbb484dDan Gohman SV, 0, false, SrcAlign); 17241401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner } 1725fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 172635481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Result is a load from the stack slot. 17271401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SlotSize == DestSize) 17288a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(DestVT, dl, Store, FIPtr, SV, 0, false, DestAlign); 1729fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17301401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SlotSize < DestSize && "Unknown extension!"); 17318a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, Store, FIPtr, SV, 0, SlotVT, 1732364d73ddab43b699ab90240f11b7a2eb5cf69bd8Mon P Wang false, DestAlign); 173335481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner} 173435481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner 1735475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandSCALAR_TO_VECTOR(SDNode *Node) { 17368a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl = Node->getDebugLoc(); 17374352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // Create a vector sized/aligned stack slot, store the value to element #0, 17384352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // then load the whole vector back out. 1739475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(Node->getValueType(0)); 174069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 1741bbbbb9c3dd4160990f856854d16a3beaead1f354Dan Gohman FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(StackPtr); 174269de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman int SPFI = StackPtrFI->getIndex(); 174369de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 1744b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands SDValue Ch = DAG.getTruncStore(DAG.getEntryNode(), dl, Node->getOperand(0), 1745b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands StackPtr, 1746b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands PseudoSourceValue::getFixedStack(SPFI), 0, 1747b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands Node->getValueType(0).getVectorElementType()); 17488a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(Node->getValueType(0), dl, Ch, StackPtr, 1749a54cf176613f9ae8301519a61b8935652c0fb8aeDan Gohman PseudoSourceValue::getFixedStack(SPFI), 0); 17504352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 17514352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 17524352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 1753ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner/// ExpandBUILD_VECTOR - Expand a BUILD_VECTOR node on targets that don't 175407a96765daedf180a7102d39fe56c499878312b7Dan Gohman/// support the operation, but do support the resultant vector type. 1755475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandBUILD_VECTOR(SDNode *Node) { 175626cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson unsigned NumElems = Node->getNumOperands(); 17577a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Value1, Value2; 175826cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson DebugLoc dl = Node->getDebugLoc(); 1759e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1760e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(0).getValueType(); 1761e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 1762fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1763fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // If the only non-undef value is the low element, turn this into a 176487100e0b83b808757bf44dabecd1d1048255d1adChris Lattner // SCALAR_TO_VECTOR node. If this is { X, X, X, X }, determine X. 1765ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner bool isOnlyLowElement = true; 17667a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman bool MoreThanTwoValues = false; 17672eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner bool isConstant = true; 17687a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 1769475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue V = Node->getOperand(i); 17707a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 17717a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 17727a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (i > 0) 1773ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner isOnlyLowElement = false; 17747a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!isa<ConstantFPSDNode>(V) && !isa<ConstantSDNode>(V)) 17752eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner isConstant = false; 17767a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 17777a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) { 17787a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value1 = V; 17797a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (!Value2.getNode()) { 17807a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V != Value1) 17817a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value2 = V; 17827a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (V != Value1 && V != Value2) { 17837a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman MoreThanTwoValues = true; 17847a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 1785ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1786fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17877a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) 17887a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getUNDEF(VT); 17897a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 17907a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (isOnlyLowElement) 179126cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson return DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Node->getOperand(0)); 1792fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17932eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // If all elements are constants, create a load from the constant pool. 1794ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner if (isConstant) { 1795ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner std::vector<Constant*> CV; 1796033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng for (unsigned i = 0, e = NumElems; i != e; ++i) { 1797fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel if (ConstantFPSDNode *V = 1798ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner dyn_cast<ConstantFPSDNode>(Node->getOperand(i))) { 17994fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman CV.push_back(const_cast<ConstantFP *>(V->getConstantFPValue())); 1800fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel } else if (ConstantSDNode *V = 1801ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson dyn_cast<ConstantSDNode>(Node->getOperand(i))) { 18024fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman CV.push_back(const_cast<ConstantInt *>(V->getConstantIntValue())); 1803ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } else { 1804ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner assert(Node->getOperand(i).getOpcode() == ISD::UNDEF); 180523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *OpNTy = OpVT.getTypeForEVT(*DAG.getContext()); 18069e9a0d5fc26878e51a58a8b57900fcbf952c2691Owen Anderson CV.push_back(UndefValue::get(OpNTy)); 1807ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1808ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1809af7ec975870f92245f1f1484ac80a1e2db6a0afaOwen Anderson Constant *CP = ConstantVector::get(CV); 1810475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(CP, TLI.getPointerTy()); 18111606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 18128a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(VT, dl, DAG.getEntryNode(), CPIdx, 181350284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, 181450284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman false, Alignment); 1815ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1816fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18177a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!MoreThanTwoValues) { 18187a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SmallVector<int, 8> ShuffleVec(NumElems, -1); 18197a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 18207a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue V = Node->getOperand(i); 18217a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 18227a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 18237a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman ShuffleVec[i] = V == Value1 ? 0 : NumElems; 18247a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 18257a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (TLI.isShuffleMaskLegal(ShuffleVec, Node->getValueType(0))) { 18262eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Get the splatted value into the low element of a vector register. 18277a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec1 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value1); 18287a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec2; 18297a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (Value2.getNode()) 18307a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value2); 18317a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman else 18327a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getUNDEF(VT); 1833fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18342eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Return shuffle(LowValVec, undef, <0,0,0,0>) 18357a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getVectorShuffle(VT, dl, Vec1, Vec2, ShuffleVec.data()); 1836033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1837033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1838fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18397ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, we can't handle this case efficiently. 18407ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return ExpandVectorBuildThroughStack(Node); 1841ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner} 1842ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner 184377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// ExpandLibCall - Expand a node into a call to a libcall. If the result value 184477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// does not fit into a register, return the lo part and set the hi part to the 184577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// by-reg argument. If it does fit into a single register, return the result 184677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// and leave the Hi part unset. 1847475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, 184847b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman bool isSigned) { 18496831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "Cannot overlap legalization of calls!"); 1850fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // The input chain to this libcall is the entry node of the function. 18516831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalizing the call will automatically add the previous call to the 18526831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // dependence. 1853475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InChain = DAG.getEntryNode(); 1854fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 185577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 185647857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer TargetLowering::ArgListEntry Entry; 185777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 1858e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ArgVT = Node->getOperand(i).getValueType(); 185923b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext()); 1860fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Entry.Node = Node->getOperand(i); Entry.Ty = ArgTy; 1861d0b82b301d700217a716526f9329bb031e0d6578Anton Korobeynikov Entry.isSExt = isSigned; 186200fee65fd21f9615d1a604b8b7d42cd16a3f6b47Duncan Sands Entry.isZExt = !isSigned; 186347857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer Args.push_back(Entry); 186477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 1865056292fd738924f3f7703725d8f630983794b5a5Bill Wendling SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 18660c39719bfc7d0b3e61fbd55e1115184a1d5f6ae7Mon P Wang TLI.getPointerTy()); 1867edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 18680d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Splice the libcall in wherever FindInputOutputChains tells us to. 186923b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext()); 1870ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson std::pair<SDValue, SDValue> CallInfo = 187186098bd6a63d2cdf0c9be9ef3151bd2728281fd7Dale Johannesen TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false, 187298ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman 0, CallingConv::C, false, 187398ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 187498ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman Callee, Args, DAG, 18757d2ad624fa749a6d3edac0d94e9c107989c16304Dale Johannesen Node->getDebugLoc()); 18760d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 18776831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call sequence, starting with the chain. This will advance 18786831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // the LastCALLSEQ_END to the legalized version of the CALLSEQ_END node that 18796831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // was added by LowerCallTo (guaranteeing proper serialization of calls). 18806831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(CallInfo.second); 188174807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman return CallInfo.first; 188222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 188322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 1884f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandFPLibCall(SDNode* Node, 1885f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F32, 1886f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, 1887f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F80, 1888f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128) { 1889f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 1890825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 1891c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unexpected request for libcall!"); 1892825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f32: LC = Call_F32; break; 1893825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f64: LC = Call_F64; break; 1894825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f80: LC = Call_F80; break; 1895825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::ppcf128: LC = Call_PPCF128; break; 1896f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 1897f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, false); 1898f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 1899f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 1900f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandIntLibCall(SDNode* Node, bool isSigned, 1901f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I16, 1902f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I32, 1903f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I64, 1904f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128) { 1905f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 1906825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 1907c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unexpected request for libcall!"); 1908825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i16: LC = Call_I16; break; 1909825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i32: LC = Call_I32; break; 1910825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i64: LC = Call_I64; break; 1911825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i128: LC = Call_I128; break; 1912f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 1913f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, isSigned); 1914f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 1915f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 191622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandLegalINT_TO_FP - This function is responsible for legalizing a 191722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// INT_TO_FP operation of the specified operand when the target requests that 191822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we expand it. At this point, we know that the result and operand types are 191922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target. 1920475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLegalINT_TO_FP(bool isSigned, 1921475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0, 1922e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 1923af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 1924825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Op0.getValueType() == MVT::i32) { 192522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // simple 32-bit [signed|unsigned] integer to float/double expansion 1926fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 192723594d4537fb88a963c6d6993af5027eac9bfbacChris Lattner // Get the stack frame index of a 8 byte buffer. 1928825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue StackSlot = DAG.CreateStackTemporary(MVT::f64); 1929fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 193022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // word offset constant for Hi/Lo address computation 1931475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue WordOff = DAG.getConstant(sizeof(int), TLI.getPointerTy()); 193222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // set up Hi and Lo (into buffer) address based on endian 1933475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = StackSlot; 1934fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Lo = DAG.getNode(ISD::ADD, dl, 1935ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getPointerTy(), StackSlot, WordOff); 1936408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner if (TLI.isLittleEndian()) 1937408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner std::swap(Hi, Lo); 1938fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 193922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // if signed map to unsigned space 1940475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0Mapped; 194122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) { 194222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // constant used to invert sign bit (signed to unsigned mapping) 1943825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue SignBit = DAG.getConstant(0x80000000u, MVT::i32); 1944825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Op0Mapped = DAG.getNode(ISD::XOR, dl, MVT::i32, Op0, SignBit); 194522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } else { 194622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Op0Mapped = Op0; 194722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 194822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the lo of the constructed double - based on integer input 1949af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Store1 = DAG.getStore(DAG.getEntryNode(), dl, 1950ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson Op0Mapped, Lo, NULL, 0); 195122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // initial hi portion of constructed double 1952825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue InitialHi = DAG.getConstant(0x43300000u, MVT::i32); 195322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the hi of the constructed double - biased exponent 1954af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Store2=DAG.getStore(Store1, dl, InitialHi, Hi, NULL, 0); 195522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // load the constructed double 1956825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Load = DAG.getLoad(MVT::f64, dl, Store2, StackSlot, NULL, 0); 195722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // FP constant to bias correct the final result 1958475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Bias = DAG.getConstantFP(isSigned ? 1959ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000080000000ULL) : 1960ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000000000000ULL), 1961825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::f64); 196222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // subtract the bias 1963825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Sub = DAG.getNode(ISD::FSUB, dl, MVT::f64, Load, Bias); 196422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // final result 1965475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result; 196622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // handle final rounding 1967825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (DestVT == MVT::f64) { 196822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // do nothing 196922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Result = Sub; 1970825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsLT(MVT::f64)) { 1971af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_ROUND, dl, DestVT, Sub, 19720bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(0)); 1973825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsGT(MVT::f64)) { 1974af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, DestVT, Sub); 197522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 197622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Result; 197722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 197822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner assert(!isSigned && "Legalize cannot Expand SINT_TO_FP for i64 yet"); 1979af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Tmp1 = DAG.getNode(ISD::SINT_TO_FP, dl, DestVT, Op0); 198022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 1981af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue SignSet = DAG.getSetCC(dl, TLI.getSetCCResultType(Op0.getValueType()), 19825480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands Op0, DAG.getConstant(0, Op0.getValueType()), 19835480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands ISD::SETLT); 1984475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Zero = DAG.getIntPtrConstant(0), Four = DAG.getIntPtrConstant(4); 1985af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue CstOffset = DAG.getNode(ISD::SELECT, dl, Zero.getValueType(), 198622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner SignSet, Four, Zero); 198722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 198822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the sign bit of the integer is set, the large number will be treated 198922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // as a negative number. To counteract this, the dynamic code adds an 199022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // offset depending on the data type. 199122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner uint64_t FF; 1992825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Op0.getValueType().getSimpleVT().SimpleTy) { 1993c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unsupported integer type!"); 1994825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i8 : FF = 0x43800000ULL; break; // 2^8 (as a float) 1995825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i16: FF = 0x47800000ULL; break; // 2^16 (as a float) 1996825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i32: FF = 0x4F800000ULL; break; // 2^32 (as a float) 1997825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i64: FF = 0x5F800000ULL; break; // 2^64 (as a float) 199822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 199922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (TLI.isLittleEndian()) FF <<= 32; 20001d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson Constant *FudgeFactor = ConstantInt::get( 20011d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson Type::getInt64Ty(*DAG.getContext()), FF); 200222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2003475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(FudgeFactor, TLI.getPointerTy()); 20041606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 2005af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen CPIdx = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), CPIdx, CstOffset); 200687a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman Alignment = std::min(Alignment, 4u); 2007475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FudgeInReg; 2008825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (DestVT == MVT::f32) 2009825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson FudgeInReg = DAG.getLoad(MVT::f32, dl, DAG.getEntryNode(), CPIdx, 201050284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, 201150284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman false, Alignment); 201222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner else { 201369de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman FudgeInReg = 2014af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen LegalizeOp(DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, 201569de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman DAG.getEntryNode(), CPIdx, 20163069b8743769527ce7af6cfb6591a2f0fc2faee4Dan Gohman PseudoSourceValue::getConstantPool(), 0, 2017825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::f32, false, Alignment)); 201822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 201922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2020af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(ISD::FADD, dl, DestVT, Tmp1, FudgeInReg); 202122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 202222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 202322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalINT_TO_FP - This function is responsible for legalizing a 202422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// *INT_TO_FP operation of the specified operand when the target requests that 202522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 202622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal UINT_TO_FP or SINT_TO_FP 202722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that takes a larger input. 2028475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalINT_TO_FP(SDValue LegalOp, 2029e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2030af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2031af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 203222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate *INT_TO_FP operation to use. 2033e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewInTy = LegalOp.getValueType(); 203422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 203522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 203622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 203722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 203822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2039825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewInTy = (MVT::SimpleValueType)(NewInTy.getSimpleVT().SimpleTy+1); 204083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewInTy.isInteger() && "Ran out of possibilities!"); 204122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 204222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports SINT_TO_FP of this type, use it. 20433be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::SINT_TO_FP, NewInTy)) { 20443be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::SINT_TO_FP; 20453be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 204622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 204722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) continue; 204822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 204922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports UINT_TO_FP of this type, use it. 20503be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::UINT_TO_FP, NewInTy)) { 20513be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::UINT_TO_FP; 20523be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 205322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 205422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 205522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 205622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 205722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 205822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Okay, we found the operation and type to use. Zero extend our input to the 205922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // desired type then run the operation on it. 2060af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(OpToUse, dl, DestVT, 206122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, 2062af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen dl, NewInTy, LegalOp)); 206377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 206477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 206522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalFP_TO_INT - This function is responsible for legalizing a 206622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// FP_TO_*INT operation of the specified operand when the target requests that 206722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 206822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal FP_TO_UINT or FP_TO_SINT 206922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that returns a larger result. 2070475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalFP_TO_INT(SDValue LegalOp, 2071e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2072af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2073af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 207422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate FP_TO*INT operation to use. 2075e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewOutTy = DestVT; 20769c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 207722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 2078e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 207922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 208022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2081825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewOutTy = (MVT::SimpleValueType)(NewOutTy.getSimpleVT().SimpleTy+1); 208283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewOutTy.isInteger() && "Ran out of possibilities!"); 208366de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner 20843be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_SINT, NewOutTy)) { 208522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_SINT; 208622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 208722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 2088e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 20893be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_UINT, NewOutTy)) { 209022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_UINT; 209122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 2092e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner } 20930d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 209422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 2095a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner } 2096a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner 2097fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 209827a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Okay, we found the operation and type to use. 2099af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Operation = DAG.getNode(OpToUse, dl, NewOutTy, LegalOp); 2100126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 210127a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Truncate the result of the extended FP_TO_*INT operation to the desired 210227a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // size. 2103af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(ISD::TRUNCATE, dl, DestVT, Operation); 210422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 210513689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner 210622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBSWAP - Open code the operations for BSWAP of the specified operation. 210722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 21088a782a2a8c2f0c82f292d03a3f707232b0bae27bDale JohannesenSDValue SelectionDAGLegalize::ExpandBSWAP(SDValue Op, DebugLoc dl) { 2109e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2110e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SHVT = TLI.getShiftAmountTy(); 2111475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4, Tmp5, Tmp6, Tmp7, Tmp8; 2112825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (VT.getSimpleVT().SimpleTy) { 2113c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unhandled Expand type in BSWAP!"); 2114825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i16: 21158a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21168a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21178a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp1, Tmp2); 2118825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i32: 21198a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21208a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21218a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21228a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21238a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(0xFF0000, VT)); 21248a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(0xFF00, VT)); 21258a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 21268a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 21278a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 2128825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i64: 21298a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(56, SHVT)); 21308a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(40, SHVT)); 21318a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21328a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21338a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21348a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21358a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(40, SHVT)); 21368a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(56, SHVT)); 21378a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::AND, dl, VT, Tmp7, DAG.getConstant(255ULL<<48, VT)); 21388a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::AND, dl, VT, Tmp6, DAG.getConstant(255ULL<<40, VT)); 21398a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::AND, dl, VT, Tmp5, DAG.getConstant(255ULL<<32, VT)); 21408a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::AND, dl, VT, Tmp4, DAG.getConstant(255ULL<<24, VT)); 21418a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(255ULL<<16, VT)); 21428a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(255ULL<<8 , VT)); 21438a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp7); 21448a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::OR, dl, VT, Tmp6, Tmp5); 21458a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 21468a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 21478a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp6); 21488a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 21498a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp4); 21500d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner } 215177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 2152edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 215322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBitCount - Expand the specified bitcount instruction into operations. 215422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 2155fdc40a0a696c658d550d894ea03772e5f8af2c94Scott MichelSDValue SelectionDAGLegalize::ExpandBitCount(unsigned Opc, SDValue Op, 21568a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 215722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner switch (Opc) { 2158c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Cannot expand this yet!"); 215922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTPOP: { 216022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner static const uint64_t mask[6] = { 216122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x5555555555555555ULL, 0x3333333333333333ULL, 216222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x0F0F0F0F0F0F0F0FULL, 0x00FF00FF00FF00FFULL, 216322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x0000FFFF0000FFFFULL, 0x00000000FFFFFFFFULL 216422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner }; 2165e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2166e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ShVT = TLI.getShiftAmountTy(); 216783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 216822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 216922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner //x = (x & mask[i][len/8]) + (x >> (1 << i) & mask[i][len/8]) 2170b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands unsigned EltSize = VT.isVector() ? 2171b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands VT.getVectorElementType().getSizeInBits() : len; 2172b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands SDValue Tmp2 = DAG.getConstant(APInt(EltSize, mask[i]), VT); 2173475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2174fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::ADD, dl, VT, 2175e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::AND, dl, VT, Op, Tmp2), 21768a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::AND, dl, VT, 21778a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3), 21788a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2)); 217922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 218022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Op; 218122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 218222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTLZ: { 218322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we do this: 218422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 1); 218522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 2); 218622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // ... 218722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>16); 218822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>32); // for 64-bit input 218922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // return popcount(~x); 219022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // 219122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // but see also: http://www.hackersdelight.org/HDcode/nlz.cc 2192e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2193e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ShVT = TLI.getShiftAmountTy(); 219483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 219522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 2196475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2197fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::OR, dl, VT, Op, 2198e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3)); 219922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 22008a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Op = DAG.getNOT(dl, Op, VT); 22018a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Op); 220222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 220322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTTZ: { 220422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we use: { return popcount(~x & (x - 1)); } 220522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // unless the target has ctlz but not ctpop, in which case we use: 220622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // { return 32 - nlz(~x & (x-1)); } 220722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // see also http://www.hackersdelight.org/HDcode/ntz.cc 2208e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 22098a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue Tmp3 = DAG.getNode(ISD::AND, dl, VT, 22108a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNOT(dl, Op, VT), 22118a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SUB, dl, VT, Op, 22127581bfa2757a3149c6d17c0fe592e5c3808aa843Bill Wendling DAG.getConstant(1, VT))); 221322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If ISD::CTLZ is legal and CTPOP isn't, then do that instead. 2214f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman if (!TLI.isOperationLegalOrCustom(ISD::CTPOP, VT) && 2215f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.isOperationLegalOrCustom(ISD::CTLZ, VT)) 22168a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::SUB, dl, VT, 221783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(VT.getSizeInBits(), VT), 22188a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::CTLZ, dl, VT, Tmp3)); 22198a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Tmp3); 222022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 222122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 222222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 2223e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 22248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::ExpandNode(SDNode *Node, 22258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 22268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 2227bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 22288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 22298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 22308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 22318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 22328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandBitCount(Node->getOpcode(), Node->getOperand(0), dl); 22338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 22348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: 22368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(ExpandBSWAP(Node->getOperand(0), dl)); 22378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 22398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 22408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 22418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, Node->getValueType(0))); 22428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 22448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(1, Node->getValueType(0))); 22458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 22478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::DECLARE: 22488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::DBG_LABEL: 22498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_LABEL: 22508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::PREFETCH: 22518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MEMBARRIER: 22528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAEND: 22538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(0)); 22548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::DBG_STOPPOINT: 22564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(ExpandDBG_STOPPOINT(Node)); 22574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 22584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::DYNAMIC_STACKALLOC: 22594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ExpandDYNAMIC_STACKALLOC(Node, Results); 22604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 22618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 22628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0; i < Node->getNumValues(); i++) 22638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(i)); 22648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UNDEF: { 2266e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 22678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (VT.isInteger()) 22688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, VT)); 22698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else if (VT.isFloatingPoint()) 22708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstantFP(0, VT)); 22718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 2272c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Unknown value type!"); 22738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 22758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAP: { 22768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // If this operation is not supported, lower it to 'abort()' call 22778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::ArgListTy Args; 22788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman std::pair<SDValue, SDValue> CallResult = 22791d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson TLI.LowerCallTo(Node->getOperand(0), Type::getVoidTy(*DAG.getContext()), 22806b61cd185eeb90bec93f042535594132ae1f0f41Tilmann Scheller false, false, false, false, 0, CallingConv::C, false, 228198ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 22828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getExternalSymbol("abort", TLI.getPointerTy()), 22838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Args, DAG, dl); 22848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(CallResult.second); 22858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 22878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND: 22888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BIT_CONVERT: 22898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), Node->getValueType(0), 22908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 22918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 22928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_EXTEND: 22948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), 22958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType(), 22968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 22978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 22988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 23008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: we could fall back on load/store here too for targets without 23018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // SAR. However, it is doubtful that any exist. 2302e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 23038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman unsigned BitsDiff = Node->getValueType(0).getSizeInBits() - 23048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ExtraVT.getSizeInBits(); 23058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SDValue ShiftCst = DAG.getConstant(BitsDiff, TLI.getShiftAmountTy()); 23068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SHL, dl, Node->getValueType(0), 23078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), ShiftCst); 23088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRA, dl, Node->getValueType(0), Tmp1, ShiftCst); 23098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: { 23138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // The only way we can lower this is to turn it into a TRUNCSTORE, 23148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // EXTLOAD pair, targetting a temporary location (a stack slot). 23158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 23168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: there is a choice here between constantly creating new stack 23178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // slots and always reusing the same one. We currently always create 23188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // new ones, as reuse may inhibit scheduling. 2319e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 23208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), ExtraVT, 23218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 23228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 23268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 23278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandLegalINT_TO_FP(Node->getOpcode() == ISD::SINT_TO_FP, 23288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), Node->getValueType(0), dl); 23298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: { 23328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SDValue True, False; 2333e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getOperand(0).getValueType(); 2334e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = Node->getValueType(0); 23358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const uint64_t zero[] = {0, 0}; 23368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APFloat apf = APFloat(APInt(VT.getSizeInBits(), 2, zero)); 23378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APInt x = APInt::getSignBit(NVT.getSizeInBits()); 23388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman (void)apf.convertFromAPInt(x, false, APFloat::rmNearestTiesToEven); 23398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getConstantFP(apf, VT); 23408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), 23418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), 23428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, ISD::SETLT); 23438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman True = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, Node->getOperand(0)); 23448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman False = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, 23458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getNode(ISD::FSUB, dl, VT, 23468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), Tmp1)); 23478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman False = DAG.getNode(ISD::XOR, dl, NVT, False, 23488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(x, NVT)); 23498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, True, False); 23508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 2353509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VAARG: { 2354509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman const Value *V = cast<SrcValueSDNode>(Node->getOperand(2))->getValue(); 2355e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2356509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2357509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 2358509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SDValue VAList = DAG.getLoad(TLI.getPointerTy(), dl, Tmp1, Tmp2, V, 0); 2359509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Increment the pointer, VAList, to the next vaarg 2360509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList, 2361509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(TLI.getTargetData()-> 236223b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson getTypeAllocSize(VT.getTypeForEVT(*DAG.getContext())), 2363509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TLI.getPointerTy())); 2364509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Store the incremented VAList to the legalized pointer 2365509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getStore(VAList.getValue(1), dl, Tmp3, Tmp2, V, 0); 2366509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Load the actual argument out of the pointer VAList 2367509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(DAG.getLoad(VT, dl, Tmp3, VAList, NULL, 0)); 2368509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Results[0].getValue(1)); 2369509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2370509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 23718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VACOPY: { 23728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This defaults to loading a pointer from the input and storing it to the 23738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // output, returning the chain. 23748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VD = cast<SrcValueSDNode>(Node->getOperand(3))->getValue(); 23758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VS = cast<SrcValueSDNode>(Node->getOperand(4))->getValue(); 23768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getLoad(TLI.getPointerTy(), dl, Node->getOperand(0), 23778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(2), VS, 0); 23788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getStore(Tmp1.getValue(1), dl, Tmp1, Node->getOperand(1), VD, 0); 23798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 23838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOperand(0).getValueType().getVectorNumElements() == 1) 23848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This must be an access of the only element. Return it. 23858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, Node->getValueType(0), 23868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 23878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 23888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandExtractFromVectorThroughStack(SDValue(Node, 0)); 23898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_SUBVECTOR: 23928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(ExpandExtractFromVectorThroughStack(SDValue(Node, 0))); 23938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 2394509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::CONCAT_VECTORS: { 23955257106c4d396b5d932f7b282c3ba255c4605195Eli Friedman Results.push_back(ExpandVectorBuildThroughStack(Node)); 2396509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2397509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 23988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SCALAR_TO_VECTOR: 23998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(ExpandSCALAR_TO_VECTOR(Node)); 24008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24013f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INSERT_VECTOR_ELT: 24023f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(ExpandINSERT_VECTOR_ELT(Node->getOperand(0), 24033f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getOperand(1), 24043f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getOperand(2), dl)); 24053f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 2406509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 2407509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 2408509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 2409509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 2410e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2411e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 2412509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned NumElems = VT.getVectorNumElements(); 2413509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<SDValue, 8> Ops; 2414509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman for (unsigned i = 0; i != NumElems; ++i) { 2415509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Mask[i] < 0) { 2416509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getUNDEF(EltVT)); 2417509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman continue; 2418509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2419509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned Idx = Mask[i]; 2420509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Idx < NumElems) 2421509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2422509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Node->getOperand(0), 2423509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(Idx))); 2424509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 2425509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2426509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Node->getOperand(1), 2427509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(Idx - NumElems))); 2428509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2429509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &Ops[0], Ops.size()); 2430509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 2431509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2432509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 24338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: { 2434e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpTy = Node->getOperand(0).getValueType(); 24358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (cast<ConstantSDNode>(Node->getOperand(1))->getZExtValue()) { 24368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 1 -> Hi 24378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRL, dl, OpTy, Node->getOperand(0), 24388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OpTy.getSizeInBits()/2, 24398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TLI.getShiftAmountTy())); 24408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), Tmp1); 24418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 24428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 0 -> Lo 24438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), 24448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 24458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 24478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24493f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKSAVE: 24503f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // Expand to CopyFromReg if the target set 24513f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // StackPointerRegisterToSaveRestore. 24523f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 24533f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, SP, 24543f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getValueType(0))); 24553f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Results[0].getValue(1)); 24563f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } else { 24573f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(DAG.getUNDEF(Node->getValueType(0))); 24583f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Node->getOperand(0)); 24593f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 24603f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 24613f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKRESTORE: 24623f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // Expand to CopyToReg if the target set 24633f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // StackPointerRegisterToSaveRestore. 24643f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 24653f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(DAG.getCopyToReg(Node->getOperand(0), dl, SP, 24663f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getOperand(1))); 24673f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } else { 24683f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Node->getOperand(0)); 24693f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 24703f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 24714bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::FCOPYSIGN: 24724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(ExpandFCOPYSIGN(Node)); 24734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 2474f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEG: 2475f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FNEG(X) -> Y = SUB -0.0, X 2476f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getConstantFP(-0.0, Node->getValueType(0)); 2477f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(ISD::FSUB, dl, Node->getValueType(0), Tmp1, 2478f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Node->getOperand(0)); 2479f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2480f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2481f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FABS: { 2482f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FABS(X) -> Y = (X >u 0.0) ? X : fneg(X). 2483e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2484f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = Node->getOperand(0); 2485f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp2 = DAG.getConstantFP(0.0, VT); 2486f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(Tmp1.getValueType()), 2487f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1, Tmp2, ISD::SETUGT); 2488f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp3 = DAG.getNode(ISD::FNEG, dl, VT, Tmp1); 2489f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, VT, Tmp2, Tmp1, Tmp3); 2490f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2491f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2492f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 2493f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSQRT: 2494f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::SQRT_F32, RTLIB::SQRT_F64, 2495f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::SQRT_F80, RTLIB::SQRT_PPCF128)); 2496f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2497f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSIN: 2498f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::SIN_F32, RTLIB::SIN_F64, 2499f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::SIN_F80, RTLIB::SIN_PPCF128)); 2500f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2501f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCOS: 2502f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::COS_F32, RTLIB::COS_F64, 2503f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::COS_F80, RTLIB::COS_PPCF128)); 2504f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2505f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG: 2506f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG_F32, RTLIB::LOG_F64, 2507f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::LOG_F80, RTLIB::LOG_PPCF128)); 2508f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2509f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG2: 2510f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG2_F32, RTLIB::LOG2_F64, 2511f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::LOG2_F80, RTLIB::LOG2_PPCF128)); 2512f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2513f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG10: 2514f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG10_F32, RTLIB::LOG10_F64, 2515f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::LOG10_F80, RTLIB::LOG10_PPCF128)); 2516f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2517f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP: 2518f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP_F32, RTLIB::EXP_F64, 2519f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::EXP_F80, RTLIB::EXP_PPCF128)); 2520f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2521f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP2: 2522f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP2_F32, RTLIB::EXP2_F64, 2523f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::EXP2_F80, RTLIB::EXP2_PPCF128)); 2524f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2525f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FTRUNC: 2526f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::TRUNC_F32, RTLIB::TRUNC_F64, 2527f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::TRUNC_F80, RTLIB::TRUNC_PPCF128)); 2528f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2529f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FFLOOR: 2530f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::FLOOR_F32, RTLIB::FLOOR_F64, 2531f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::FLOOR_F80, RTLIB::FLOOR_PPCF128)); 2532f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2533f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCEIL: 2534f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::CEIL_F32, RTLIB::CEIL_F64, 2535f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::CEIL_F80, RTLIB::CEIL_PPCF128)); 2536f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2537f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FRINT: 2538f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::RINT_F32, RTLIB::RINT_F64, 2539f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::RINT_F80, RTLIB::RINT_PPCF128)); 2540f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2541f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEARBYINT: 2542f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::NEARBYINT_F32, 2543f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::NEARBYINT_F64, 2544f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::NEARBYINT_F80, 2545f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::NEARBYINT_PPCF128)); 2546f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2547f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOWI: 2548f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::POWI_F32, RTLIB::POWI_F64, 2549f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::POWI_F80, RTLIB::POWI_PPCF128)); 2550f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2551f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOW: 2552f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::POW_F32, RTLIB::POW_F64, 2553f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::POW_F80, RTLIB::POW_PPCF128)); 2554f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2555f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FDIV: 2556f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::DIV_F32, RTLIB::DIV_F64, 2557f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::DIV_F80, RTLIB::DIV_PPCF128)); 2558f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2559f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FREM: 2560f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::REM_F32, RTLIB::REM_F64, 2561f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::REM_F80, RTLIB::REM_PPCF128)); 2562f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2563f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::ConstantFP: { 2564f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman ConstantFPSDNode *CFP = cast<ConstantFPSDNode>(Node); 2565f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Check to see if this FP immediate is already legal. 2566f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isLegal = false; 2567f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman for (TargetLowering::legal_fpimm_iterator I = TLI.legal_fpimm_begin(), 2568f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman E = TLI.legal_fpimm_end(); I != E; ++I) { 2569f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (CFP->isExactlyValue(*I)) { 2570f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman isLegal = true; 2571f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2572f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2573f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2574f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // If this is a legal constant, turn it into a TargetConstantFP node. 2575f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (isLegal) 2576f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(SDValue(Node, 0)); 2577f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 2578f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(ExpandConstantFP(CFP, true, DAG, TLI)); 2579f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2580f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 258126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EHSELECTION: { 258226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionSelectorRegister(); 258326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 258426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(DAG.getCopyFromReg(Node->getOperand(1), dl, Reg, 258526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getValueType(0))); 258626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 258726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 258826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 258926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EXCEPTIONADDR: { 259026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionAddressRegister(); 259126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 259226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, Reg, 259326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getValueType(0))); 259426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 259526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 259626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 259726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::SUB: { 2598e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 259926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ISD::ADD, VT) && 260026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman TLI.isOperationLegalOrCustom(ISD::XOR, VT) && 260126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "Don't know how to expand this subtraction!"); 260226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ISD::XOR, dl, VT, Node->getOperand(1), 260326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman DAG.getConstant(APInt::getAllOnesValue(VT.getSizeInBits()), VT)); 260426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ISD::ADD, dl, VT, Tmp2, DAG.getConstant(1, VT)); 260526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(DAG.getNode(ISD::ADD, dl, VT, Node->getOperand(0), Tmp1)); 260626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 260726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 2608f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UREM: 2609f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SREM: { 2610e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 261126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 2612f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SREM; 2613f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivOpc = isSigned ? ISD::SDIV : ISD::UDIV; 2614f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 2615f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(0); 2616f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp3 = Node->getOperand(1); 26173be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) { 26183be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Tmp2, Tmp3).getValue(1); 26193be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } else if (TLI.isOperationLegalOrCustom(DivOpc, VT)) { 2620f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // X % Y -> X-X/Y*Y 2621f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivOpc, dl, VT, Tmp2, Tmp3); 2622f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, VT, Tmp1, Tmp3); 2623f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, Tmp2, Tmp1); 2624f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else if (isSigned) { 2625f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = ExpandIntLibCall(Node, true, RTLIB::SREM_I16, RTLIB::SREM_I32, 2626f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::SREM_I64, RTLIB::SREM_I128); 2627f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else { 262826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = ExpandIntLibCall(Node, false, RTLIB::UREM_I16, RTLIB::UREM_I32, 262926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::UREM_I64, RTLIB::UREM_I128); 2630f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 263126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 263226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 263326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 2634f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UDIV: 2635f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SDIV: { 2636f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SDIV; 2637f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 2638e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 263926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 2640f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) 2641f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Node->getOperand(0), 2642f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(1)); 2643f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else if (isSigned) 264426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = ExpandIntLibCall(Node, true, RTLIB::SDIV_I16, RTLIB::SDIV_I32, 264526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::SDIV_I64, RTLIB::SDIV_I128); 2646f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 2647f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = ExpandIntLibCall(Node, false, RTLIB::UDIV_I16, RTLIB::UDIV_I32, 2648f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::UDIV_I64, RTLIB::UDIV_I128); 264926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 265026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 265126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 265226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHU: 265326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHS: { 265426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned ExpandOpcode = Node->getOpcode() == ISD::MULHU ? ISD::UMUL_LOHI : 265526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman ISD::SMUL_LOHI; 2656e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 265726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 265826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ExpandOpcode, VT) && 265926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "If this wasn't legal, it shouldn't have been created!"); 266026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ExpandOpcode, dl, VTs, Node->getOperand(0), 266126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getOperand(1)); 266226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1.getValue(1)); 266326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 266426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 266526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MUL: { 2666e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 266726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 266826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // See if multiply or divide can be lowered using two-result operations. 266926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // We just need the low half of the multiply; try both the signed 267026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // and unsigned forms. If the target supports both SMUL_LOHI and 267126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // UMUL_LOHI, form a preference by checking which forms of plain 267226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // MULH it supports. 267326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasSMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::SMUL_LOHI, VT); 267426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasUMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::UMUL_LOHI, VT); 267526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHS = TLI.isOperationLegalOrCustom(ISD::MULHS, VT); 267626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHU = TLI.isOperationLegalOrCustom(ISD::MULHU, VT); 267726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned OpToUse = 0; 267826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (HasSMUL_LOHI && !HasMULHS) { 267926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 268026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI && !HasMULHU) { 268126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 268226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasSMUL_LOHI) { 268326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 268426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI) { 268526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 268626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 268726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (OpToUse) { 2688f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(DAG.getNode(OpToUse, dl, VTs, Node->getOperand(0), 2689f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(1))); 269026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 269126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 269226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = ExpandIntLibCall(Node, false, RTLIB::MUL_I16, RTLIB::MUL_I32, 269326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::MUL_I64, RTLIB::MUL_I128); 269426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 269526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 269626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 26974bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SADDO: 26984bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SSUBO: { 26994bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 27004bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 27014bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::SADDO ? 27024bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 27034bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 27044bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 2705e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OType = Node->getValueType(1); 27064bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27074bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Zero = DAG.getConstant(0, LHS.getValueType()); 27084bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27094bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // LHSSign -> LHS >= 0 27104bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RHSSign -> RHS >= 0 27114bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // SumSign -> Sum >= 0 27124bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 27134bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Add: 27144bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign == RHSSign) && (LHSSign != SumSign) 27154bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Sub: 27164bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign != RHSSign) && (LHSSign != SumSign) 27174bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 27184bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHSSign = DAG.getSetCC(dl, OType, LHS, Zero, ISD::SETGE); 27194bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHSSign = DAG.getSetCC(dl, OType, RHS, Zero, ISD::SETGE); 27204bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignsMatch = DAG.getSetCC(dl, OType, LHSSign, RHSSign, 27214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Node->getOpcode() == ISD::SADDO ? 27224bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETEQ : ISD::SETNE); 27234bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSign = DAG.getSetCC(dl, OType, Sum, Zero, ISD::SETGE); 27254bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSignNE = DAG.getSetCC(dl, OType, LHSSign, SumSign, ISD::SETNE); 27264bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27274bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Cmp = DAG.getNode(ISD::AND, dl, OType, SignsMatch, SumSignNE); 27284bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Cmp); 27294bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 27304bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 27314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::UADDO: 27324bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::USUBO: { 27334bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 27344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 27354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::UADDO ? 27364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 27374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 27384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 27394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(DAG.getSetCC(dl, Node->getValueType(1), Sum, LHS, 27404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Node->getOpcode () == ISD::UADDO ? 27414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETULT : ISD::SETUGT)); 27424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 27434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2744db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::UMULO: 2745db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::SMULO: { 2746e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2747db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue LHS = Node->getOperand(0); 2748db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue RHS = Node->getOperand(1); 2749db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue BottomHalf; 2750db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue TopHalf; 2751db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman static unsigned Ops[2][3] = 2752db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { { ISD::MULHU, ISD::UMUL_LOHI, ISD::ZERO_EXTEND }, 2753db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { ISD::MULHS, ISD::SMUL_LOHI, ISD::SIGN_EXTEND }}; 2754db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman bool isSigned = Node->getOpcode() == ISD::SMULO; 2755db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (TLI.isOperationLegalOrCustom(Ops[isSigned][0], VT)) { 2756db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::MUL, dl, VT, LHS, RHS); 2757db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(Ops[isSigned][0], dl, VT, LHS, RHS); 2758db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else if (TLI.isOperationLegalOrCustom(Ops[isSigned][1], VT)) { 2759db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(Ops[isSigned][1], dl, DAG.getVTList(VT, VT), LHS, 2760db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS); 2761db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = BottomHalf.getValue(1); 276223b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson } else if (TLI.isTypeLegal(EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits() * 2))) { 276323b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT WideVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits() * 2); 2764db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman LHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, LHS); 2765db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, RHS); 2766db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, WideVT, LHS, RHS); 2767db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 2768db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(0)); 2769db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 2770db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(1)); 2771db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else { 2772db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // FIXME: We should be able to fall back to a libcall with an illegal 2773db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // type in some cases cases. 2774db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // Also, we can fall back to a division in some cases, but that's a big 2775db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // performance hit in the general case. 2776c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Don't know how to expand this operation yet!"); 2777db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2778db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (isSigned) { 2779db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getConstant(VT.getSizeInBits() - 1, TLI.getShiftAmountTy()); 2780db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::SRA, dl, VT, BottomHalf, Tmp1); 2781db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, Tmp1, 2782db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman ISD::SETNE); 2783db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else { 2784db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, 2785db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getConstant(0, VT), ISD::SETNE); 2786db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2787db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(BottomHalf); 2788db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(TopHalf); 2789db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman break; 2790db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2791f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BUILD_PAIR: { 2792e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PairTy = Node->getValueType(0); 2793f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, PairTy, Node->getOperand(0)); 2794f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = DAG.getNode(ISD::ANY_EXTEND, dl, PairTy, Node->getOperand(1)); 2795f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = DAG.getNode(ISD::SHL, dl, PairTy, Tmp2, 2796f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(PairTy.getSizeInBits()/2, 2797f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman TLI.getShiftAmountTy())); 2798f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(DAG.getNode(ISD::OR, dl, PairTy, Tmp1, Tmp2)); 2799f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2800f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2801509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::SELECT: 2802509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2803509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 2804509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = Node->getOperand(2); 2805509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Tmp1.getOpcode() == ISD::SETCC) { 2806509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1.getOperand(0), Tmp1.getOperand(1), 2807509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, 2808509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<CondCodeSDNode>(Tmp1.getOperand(2))->get()); 2809509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } else { 2810509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1, 2811509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(0, Tmp1.getValueType()), 2812509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, ISD::SETNE); 2813509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2814509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 2815509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 28164bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::BR_JT: { 28174bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Node->getOperand(0); 28184bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Table = Node->getOperand(1); 28194bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Index = Node->getOperand(2); 28204bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 2821e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PTy = TLI.getPointerTy(); 28224bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman MachineFunction &MF = DAG.getMachineFunction(); 28234bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned EntrySize = MF.getJumpTableInfo()->getEntrySize(); 28244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Index= DAG.getNode(ISD::MUL, dl, PTy, 28254bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Index, DAG.getConstant(EntrySize, PTy)); 28264bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Addr = DAG.getNode(ISD::ADD, dl, PTy, Index, Table); 28274bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 282823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), EntrySize * 8); 28294bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LD = DAG.getExtLoad(ISD::SEXTLOAD, dl, PTy, Chain, Addr, 28304bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman PseudoSourceValue::getJumpTable(), 0, MemVT); 28314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = LD; 28324bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (TLI.getTargetMachine().getRelocationModel() == Reloc::PIC_) { 28334bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // For PIC, the sequence is: 28344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // BRIND(load(Jumptable + index) + RelocBase) 28354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RelocBase can be JumpTable, GOT or some sort of global base. 28364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = DAG.getNode(ISD::ADD, dl, PTy, Addr, 28374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getPICJumpTableRelocBase(Table, DAG)); 28384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2839825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BRIND, dl, MVT::Other, LD.getValue(1), Addr); 28404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 28414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 28424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2843f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BRCOND: 2844f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Expand brcond's setcc into its constituent parts and create a BR_CC 2845f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Node. 2846f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = Node->getOperand(0); 2847f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(1); 2848f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (Tmp2.getOpcode() == ISD::SETCC) { 2849825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, 2850f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1, Tmp2.getOperand(2), 2851f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2.getOperand(0), Tmp2.getOperand(1), 2852f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 2853f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else { 2854825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, Tmp1, 2855f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getCondCode(ISD::SETNE), Tmp2, 2856f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(0, Tmp2.getValueType()), 2857f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 2858f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2859f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(Tmp1); 2860f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2861ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 2862ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = Node->getOperand(0); 2863ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp2 = Node->getOperand(1); 2864ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp3 = Node->getOperand(2); 2865bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(Node->getValueType(0), Tmp1, Tmp2, Tmp3, dl); 2866ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 2867ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // If we expanded the SETCC into an AND/OR, return the new node 2868ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman if (Tmp2.getNode() == 0) { 2869ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 2870ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 2871ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 2872ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 2873ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // Otherwise, SETCC for the given comparison type must be completely 2874ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // illegal; expand it into a SELECT_CC. 2875e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2876ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, VT, Tmp1, Tmp2, 2877ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman DAG.getConstant(1, VT), DAG.getConstant(0, VT), Tmp3); 2878ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 2879ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 2880ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 2881bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::SELECT_CC: { 2882bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // LHS 2883bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(1); // RHS 2884bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(2); // True 2885bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(3); // False 2886bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue CC = Node->getOperand(4); 2887bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2888bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp1.getValueType()), 2889bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1, Tmp2, CC, dl); 2890bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2891bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp2.getNode() && "Can't legalize SELECT_CC with legal condition!"); 2892bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = DAG.getConstant(0, Tmp1.getValueType()); 2893bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman CC = DAG.getCondCode(ISD::SETNE); 2894bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, Node->getValueType(0), Tmp1, Tmp2, 2895bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Tmp4, CC); 2896bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 2897bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 2898bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 2899bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::BR_CC: { 2900bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // Chain 2901bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(2); // LHS 2902bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(3); // RHS 2903bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(1); // CC 2904bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2905bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp2.getValueType()), 2906bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2, Tmp3, Tmp4, dl); 2907bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 2908bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2909bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp3.getNode() && "Can't legalize BR_CC with legal condition!"); 2910bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = DAG.getConstant(0, Tmp2.getValueType()); 2911bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = DAG.getCondCode(ISD::SETNE); 2912bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::BR_CC, dl, Node->getValueType(0), Tmp1, Tmp4, Tmp2, 2913bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Node->getOperand(4)); 2914bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 2915bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 2916bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 29173f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GLOBAL_OFFSET_TABLE: 29183f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalAddress: 29193f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalTLSAddress: 29203f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ExternalSymbol: 29213f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ConstantPool: 29223f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::JumpTable: 29233f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_W_CHAIN: 29243f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_WO_CHAIN: 29253f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_VOID: 29263f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // FIXME: Custom lowering for these operations shouldn't return null! 29273f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 29283f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(SDValue(Node, i)); 29293f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 29308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 29328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::PromoteNode(SDNode *Node, 29338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 2934e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OVT = Node->getValueType(0); 29358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::UINT_TO_FP || 2936a64eb92fe305424ebde2e3de2b12160b8bf76047Eli Friedman Node->getOpcode() == ISD::SINT_TO_FP || 2937a64eb92fe305424ebde2e3de2b12160b8bf76047Eli Friedman Node->getOpcode() == ISD::SETCC) { 29388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT = Node->getOperand(0).getValueType(); 29398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 2940e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), OVT); 29418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 2942509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SDValue Tmp1, Tmp2, Tmp3; 29438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 29448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 29458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 29468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 29478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Zero extend the argument. 29488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0)); 29498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Perform the larger operation. 29509a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1); 29518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::CTTZ) { 29528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman //if Tmp1 == sizeinbits(NVT) then Tmp1 = sizeinbits(Old VT) 29539a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), 29548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, DAG.getConstant(NVT.getSizeInBits(), NVT), 29558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ISD::SETEQ); 29568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, 29578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OVT.getSizeInBits(), NVT), Tmp1); 29588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else if (Node->getOpcode() == ISD::CTLZ) { 29598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Tmp1 = Tmp1 - (sizeinbits(NVT) - sizeinbits(Old VT)) 29608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, NVT, Tmp1, 29618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(NVT.getSizeInBits() - 29628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT.getSizeInBits(), NVT)); 29638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29649a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Results.push_back(DAG.getNode(ISD::TRUNCATE, dl, OVT, Tmp1)); 29658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: { 29678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman unsigned DiffBits = NVT.getSizeInBits() - OVT.getSizeInBits(); 29688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Tmp1); 29698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::BSWAP, dl, NVT, Tmp1); 29708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRL, dl, NVT, Tmp1, 29718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(DiffBits, TLI.getShiftAmountTy())); 29728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 29738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: 29768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_SINT: 29778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalFP_TO_INT(Node->getOperand(0), Node->getValueType(0), 29788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::FP_TO_SINT, dl); 29798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 29808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 29828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 29838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalINT_TO_FP(Node->getOperand(0), Node->getValueType(0), 29848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::SINT_TO_FP, dl); 29858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 29868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 2987f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::AND: 2988f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::OR: 2989c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::XOR: { 2990c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen unsigned ExtOp, TruncOp; 2991c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen if (OVT.isVector()) { 2992c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen ExtOp = ISD::BIT_CONVERT; 2993c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen TruncOp = ISD::BIT_CONVERT; 2994c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } else if (OVT.isInteger()) { 2995c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen ExtOp = ISD::ANY_EXTEND; 2996c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen TruncOp = ISD::TRUNCATE; 2997c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } else { 2998c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen llvm_report_error("Cannot promote logic operation"); 2999c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3000c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Promote each of the values to the new type. 3001c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 3002c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3003c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Perform the larger operation, then convert back 3004f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1, Tmp2); 3005c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Results.push_back(DAG.getNode(TruncOp, dl, OVT, Tmp1)); 3006f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3007c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3008c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::SELECT: { 3009509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned ExtOp, TruncOp; 30104bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Node->getValueType(0).isVector()) { 3011509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::BIT_CONVERT; 3012509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::BIT_CONVERT; 30134bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else if (Node->getValueType(0).isInteger()) { 3014509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::ANY_EXTEND; 3015509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::TRUNCATE; 3016509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } else { 3017509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::FP_EXTEND; 3018509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::FP_ROUND; 3019509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3020509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 3021509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Promote each of the values to the new type. 3022509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3023509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(2)); 3024509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Perform the larger operation, then round down. 3025509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp1, Tmp2, Tmp3); 3026509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (TruncOp != ISD::FP_ROUND) 3027509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1); 3028509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 3029509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1, 3030509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(0)); 3031509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3032509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3033c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3034509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 3035509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 3036509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 3037509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3038509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Cast the two input vectors. 3039509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(0)); 3040509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(1)); 3041509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3042509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Convert the shuffle mask to the right # elements. 3043509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = ShuffleWithNarrowerEltType(NVT, OVT, dl, Tmp1, Tmp2, Mask); 3044509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, OVT, Tmp1); 3045509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3046509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3047509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3048ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 304978d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen unsigned ExtOp = ISD::FP_EXTEND; 305078d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen if (NVT.isInteger()) { 305178d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ISD::CondCode CCCode = 305278d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen cast<CondCodeSDNode>(Node->getOperand(2))->get(); 305378d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ExtOp = isSignedIntSetCC(CCCode) ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND; 3054ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 305578d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 305678d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3057ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(DAG.getNode(ISD::SETCC, dl, Node->getValueType(0), 3058ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1, Tmp2, Node->getOperand(2))); 3059ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3060ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 30618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 30628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 30638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 30643e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// SelectionDAG::Legalize - This is the entry point for the file. 30653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 306698a366d547772010e94609e4584489b3e5ce0043Bill Wendlingvoid SelectionDAG::Legalize(bool TypesNeedLegalizing, 306798a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 30683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// run - This is the main entry point to this class. 30693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 30701fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(*this, OptLevel).LegalizeDAG(); 30713e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 30723e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 3073