LegalizeDAG.cpp revision 8983da729aa1ca99a11a3b98ae6280dfcdbadb39
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" 357d696d80409aad20bb5da0fc4eccab941dd371d4Torok Edwin#include "llvm/Support/ErrorHandling.h" 36dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands#include "llvm/Support/MathExtras.h" 3745cfe545ec8177262dabc70580ce05feaa1c3880Chris Lattner#include "llvm/Support/raw_ostream.h" 387971514755a08ec156a1b9c0f7f05d67919c56b7Chris Lattner#include "llvm/ADT/DenseMap.h" 39f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner#include "llvm/ADT/SmallVector.h" 4000755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner#include "llvm/ADT/SmallPtrSet.h" 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 { 576726b6d75a8b679068a58cb954ba97cf9d1690baNick Lewyckyclass 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); 1518983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov SDValue ExpandIntLibCall(SDNode *Node, bool isSigned, 1528983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I8, 1538983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I16, 1548983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I32, 1558983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I64, 156f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128); 157475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 158e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue EmitStackConvert(SDValue SrcOp, EVT SlotVT, EVT DestVT, DebugLoc dl); 159475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandBUILD_VECTOR(SDNode *Node); 160475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandSCALAR_TO_VECTOR(SDNode *Node); 1614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue ExpandDBG_STOPPOINT(SDNode *Node); 1624bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman void ExpandDYNAMIC_STACKALLOC(SDNode *Node, 1634bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results); 1644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue ExpandFCOPYSIGN(SDNode *Node); 165e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue ExpandLegalINT_TO_FP(bool isSigned, SDValue LegalOp, EVT DestVT, 166af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 167e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue PromoteLegalINT_TO_FP(SDValue LegalOp, EVT DestVT, bool isSigned, 168af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 169e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson SDValue PromoteLegalFP_TO_INT(SDValue LegalOp, EVT DestVT, bool isSigned, 170af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 171475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1728a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBSWAP(SDValue Op, DebugLoc dl); 1738a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBitCount(unsigned Opc, SDValue Op, DebugLoc dl); 174475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1753d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue ExpandExtractFromVectorThroughStack(SDValue Op); 1767ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue ExpandVectorBuildThroughStack(SDNode* Node); 1778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 1788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void ExpandNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void PromoteNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner}; 1813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1835a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1845a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// performs the same shuffe in terms of order or result bytes, but on a type 1855a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// whose vector element type is narrower than the original shuffle type. 1869008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman/// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 1875a5ca1519e04310f585197c20e7ae584b7f2d11fNate BegemanSDValue 188e50ed30282bb5b4a9ed952580523f2dda16215acOwen AndersonSelectionDAGLegalize::ShuffleWithNarrowerEltType(EVT NVT, EVT VT, DebugLoc dl, 1895a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue N1, SDValue N2, 1909008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVectorImpl<int> &Mask) const { 191e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = NVT.getVectorElementType(); 1925a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumMaskElts = VT.getVectorNumElements(); 1935a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumDestElts = NVT.getVectorNumElements(); 1949008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman unsigned NumEltsGrowth = NumDestElts / NumMaskElts; 1959008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1969008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(NumEltsGrowth && "Cannot promote to vector type with fewer elts!"); 1979008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1989008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman if (NumEltsGrowth == 1) 1999008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &Mask[0]); 2009008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 2019008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVector<int, 8> NewMask; 2025a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman for (unsigned i = 0; i != NumMaskElts; ++i) { 2039008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman int Idx = Mask[i]; 2049008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman for (unsigned j = 0; j != NumEltsGrowth; ++j) { 2059008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman if (Idx < 0) 2069008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(-1); 2079008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman else 2089008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(Idx * NumEltsGrowth + j); 2094352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner } 21015684b29552393553524171bff1913e750f390f8Rafael Espindola } 2115a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman assert(NewMask.size() == NumDestElts && "Non-integer NumEltsGrowth?"); 2129008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(TLI.isShuffleMaskLegal(NewMask, NVT) && "Shuffle not legal?"); 2139008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &NewMask[0]); 2144352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 2154352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 2165aa4977fba97e816b5735f0bc53f16a46b24de63Bill WendlingSelectionDAGLegalize::SelectionDAGLegalize(SelectionDAG &dag, 2171fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman CodeGenOpt::Level ol) 218be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling : TLI(dag.getTargetLoweringInfo()), DAG(dag), OptLevel(ol), 2191fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman ValueTypeActions(TLI.getValueTypeActions()) { 220825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE && 2213e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Too many value types for ValueTypeActions to hold!"); 2223e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2243e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAGLegalize::LegalizeDAG() { 2256831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LastCALLSEQ_END = DAG.getEntryNode(); 2266831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = false; 227e5ab34e05d701da042619bf540046efc3c7bc41fMon P Wang 228ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // The legalize process is inherently a bottom-up recursive process (users 229ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // legalize their uses before themselves). Given infinite stack space, we 230ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // could just start legalizing on the root and traverse the whole graph. In 231ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // practice however, this causes us to run out of stack space on large basic 23232fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // blocks. To avoid this problem, compute an ordering of the nodes where each 23332fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // node is only legalized after all of its operands are legalized. 234f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman DAG.AssignTopologicalOrder(); 235f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman for (SelectionDAG::allnodes_iterator I = DAG.allnodes_begin(), 236f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman E = prior(DAG.allnodes_end()); I != next(E); ++I) 237b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(I, 0)); 23832fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner 23932fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // Finally, it's possible the root changed. Get the new root. 240475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue OldRoot = DAG.getRoot(); 24132fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner assert(LegalizedNodes.count(OldRoot) && "Root didn't get legalized?"); 24232fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner DAG.setRoot(LegalizedNodes[OldRoot]); 2433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LegalizedNodes.clear(); 2453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remove dead nodes now. 247190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner DAG.RemoveDeadNodes(); 2483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2506831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 2516831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// FindCallEndFromCallStart - Given a chained node that is part of a call 2526831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_END node that terminates the call sequence. 2536831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallEndFromCallStart(SDNode *Node) { 2546831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_END) 2556831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Node; 2566831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->use_empty()) 2576831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; // No CallSeqEnd 258fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2596831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // The chain is usually at the end. 260475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue TheChain(Node, Node->getNumValues()-1); 261825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) { 2626831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Sometimes it's at the beginning. 263475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, 0); 264825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) { 2656831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Otherwise, hunt for it. 2666831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 1, e = Node->getNumValues(); i != e; ++i) 267825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Node->getValueType(i) == MVT::Other) { 268475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, i); 2696831a815999dde4cf801e2076e66b4943964daf2Chris Lattner break; 2706831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 271fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 272fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, we walked into a node without a chain. 273825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (TheChain.getValueType() != MVT::Other) 2746831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2756831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2766831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 277fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2786831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (SDNode::use_iterator UI = Node->use_begin(), 2796831a815999dde4cf801e2076e66b4943964daf2Chris Lattner E = Node->use_end(); UI != E; ++UI) { 280fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2816831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Make sure to only follow users of our token chain. 2828968450305c28444edc3c272d8752a8db0c2f34aDan Gohman SDNode *User = *UI; 2836831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) 2846831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (User->getOperand(i) == TheChain) 2856831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (SDNode *Result = FindCallEndFromCallStart(User)) 2866831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 2876831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2886831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2896831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 2906831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 291fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// FindCallStartFromCallEnd - Given a chained node that is part of a call 2926831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_START node that initiates the call sequence. 2936831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallStartFromCallEnd(SDNode *Node) { 2946831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(Node && "Didn't find callseq_start for a call??"); 2956831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_START) return Node; 296fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 297825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert(Node->getOperand(0).getValueType() == MVT::Other && 2986831a815999dde4cf801e2076e66b4943964daf2Chris Lattner "Node doesn't have a token chain argument!"); 299ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif return FindCallStartFromCallEnd(Node->getOperand(0).getNode()); 3006831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 3016831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3026831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// LegalizeAllNodesNotLeadingTo - Recursively walk the uses of N, looking to 303fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// see if any uses can reach Dest. If no dest operands can get to dest, 3046831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// legalize them, legalize ourself, and return false, otherwise, return true. 305c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 306c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// Keep track of the nodes we fine that actually do lead to Dest in 307c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// NodesLeadingTo. This avoids retraversing them exponential number of times. 308c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 309c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattnerbool SelectionDAGLegalize::LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 31000755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo) { 3116831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (N == Dest) return true; // N certainly leads to Dest :) 312fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 313c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // If we've already processed this node and it does lead to Dest, there is no 314c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // need to reprocess it. 315c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (NodesLeadingTo.count(N)) return true; 316fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3176831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the first result of this node has been already legalized, then it cannot 3186831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // reach N. 31974807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman if (LegalizedNodes.count(SDValue(N, 0))) return false; 320fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3216831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node has not already been legalized. Check and legalize all 3226831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // operands. If none lead to Dest, then we can legalize this node. 3236831a815999dde4cf801e2076e66b4943964daf2Chris Lattner bool OperandsLeadToDest = false; 3246831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) 3256831a815999dde4cf801e2076e66b4943964daf2Chris Lattner OperandsLeadToDest |= // If an operand leads to Dest, so do we. 326ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif LegalizeAllNodesNotLeadingTo(N->getOperand(i).getNode(), Dest, NodesLeadingTo); 3276831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 328c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (OperandsLeadToDest) { 329c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo.insert(N); 330c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner return true; 331c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 3326831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3336831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node looks safe, legalize it and return false. 334b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(N, 0)); 3356831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return false; 3366831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 3376831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3389f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// ExpandConstantFP - Expands the ConstantFP node to an integer constant or 3399f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// a load from the constant pool. 340475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanstatic SDValue ExpandConstantFP(ConstantFPSDNode *CFP, bool UseCP, 3410d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman SelectionDAG &DAG, const TargetLowering &TLI) { 342004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng bool Extend = false; 34333c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen DebugLoc dl = CFP->getDebugLoc(); 344004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 345004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // If a FP immediate is precise when represented as a float and if the 346004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // target can do an extending load from float to double, we put it into 347004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // the constant pool as a float, even if it's is statically typed as a 348aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // double. This shrinks FP constants and canonicalizes them for targets where 349aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // an FP extending load is the same cost as a normal load (such as on the x87 350aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // fp stack or PPC FP unit). 351e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = CFP->getValueType(0); 3524fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman ConstantFP *LLVMC = const_cast<ConstantFP*>(CFP->getConstantFPValue()); 3539f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng if (!UseCP) { 354825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert((VT == MVT::f64 || VT == MVT::f32) && "Invalid type expansion"); 3557111b02c734c992b8c97d9918118768026dad79eDale Johannesen return DAG.getConstant(LLVMC->getValueAPF().bitcastToAPInt(), 356825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (VT == MVT::f64) ? MVT::i64 : MVT::i32); 357279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng } 358279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng 359e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OrigVT = VT; 360e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SVT = VT; 361825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson while (SVT != MVT::f32) { 362825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SVT = (MVT::SimpleValueType)(SVT.getSimpleVT().SimpleTy - 1); 363ef12057737229452c17983faa20857dba441ef05Evan Cheng if (CFP->isValueValidForType(SVT, CFP->getValueAPF()) && 364ef12057737229452c17983faa20857dba441ef05Evan Cheng // Only do this if the target has a native EXTLOAD instruction from 365ef12057737229452c17983faa20857dba441ef05Evan Cheng // smaller type. 3660329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng TLI.isLoadExtLegal(ISD::EXTLOAD, SVT) && 367aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner TLI.ShouldShrinkFPConstant(OrigVT)) { 36823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *SType = SVT.getTypeForEVT(*DAG.getContext()); 369baf3c404409d5e47b13984a7f95bfbd6d1f2e79eOwen Anderson LLVMC = cast<ConstantFP>(ConstantExpr::getFPTrunc(LLVMC, SType)); 370ef12057737229452c17983faa20857dba441ef05Evan Cheng VT = SVT; 371ef12057737229452c17983faa20857dba441ef05Evan Cheng Extend = true; 372ef12057737229452c17983faa20857dba441ef05Evan Cheng } 373004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng } 374004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 375475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(LLVMC, TLI.getPointerTy()); 3761606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 377ef12057737229452c17983faa20857dba441ef05Evan Cheng if (Extend) 37833c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen return DAG.getExtLoad(ISD::EXTLOAD, dl, 37939355f9fea790c5a1b12ef0fdcfeac3f533232eaDale Johannesen OrigVT, DAG.getEntryNode(), 3803069b8743769527ce7af6cfb6591a2f0fc2faee4Dan Gohman CPIdx, PseudoSourceValue::getConstantPool(), 38150284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman 0, VT, false, Alignment); 38233c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen return DAG.getLoad(OrigVT, dl, DAG.getEntryNode(), CPIdx, 38350284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, false, Alignment); 384004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng} 385004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 386f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedStore - Expands an unaligned store to 2 half-size stores. 387f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 388475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedStore(StoreSDNode *ST, SelectionDAG &DAG, 3890d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman const TargetLowering &TLI) { 390475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = ST->getChain(); 391475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = ST->getBasePtr(); 392475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Val = ST->getValue(); 393e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Val.getValueType(); 394907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen int Alignment = ST->getAlignment(); 395907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen int SVOffset = ST->getSrcValueOffset(); 396bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = ST->getDebugLoc(); 39783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ST->getMemoryVT().isFloatingPoint() || 39883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands ST->getMemoryVT().isVector()) { 39923b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT intVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits()); 40005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 40105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a bitconvert of the value to the integer type of the 40205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // same size, then a (misaligned) int store. 40305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // FIXME: Does not handle truncating floating point stores! 404bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::BIT_CONVERT, dl, intVT, Val); 405bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getStore(Chain, dl, Result, Ptr, ST->getSrcValue(), 40605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset, ST->isVolatile(), Alignment); 40705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } else { 40805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do a (aligned) store to a stack slot, then copy from the stack slot 40905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // to the final destination using (unaligned) integer loads and stores. 410e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT StoredVT = ST->getMemoryVT(); 411e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT RegVT = 41223b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson TLI.getRegisterType(*DAG.getContext(), EVT::getIntegerVT(*DAG.getContext(), StoredVT.getSizeInBits())); 41305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned StoredBytes = StoredVT.getSizeInBits() / 8; 41405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned RegBytes = RegVT.getSizeInBits() / 8; 41505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned NumRegs = (StoredBytes + RegBytes - 1) / RegBytes; 41605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 417fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Make sure the stack slot is also aligned for the register type. 418fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands SDValue StackPtr = DAG.CreateStackTemporary(StoredVT, RegVT); 419fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 420fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Perform the original store, only redirected to the stack slot. 421fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Store = DAG.getTruncStore(Chain, dl, 422ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson Val, StackPtr, NULL, 0, StoredVT); 42305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 42405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SmallVector<SDValue, 8> Stores; 42505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned Offset = 0; 42605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 42705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do all but one copies using the full register width. 42805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands for (unsigned i = 1; i < NumRegs; i++) { 42905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Load one integer register's worth from the stack slot. 430bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getLoad(RegVT, dl, Store, StackPtr, NULL, 0); 43105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Store it to the final location. Remember the store. 432bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, Ptr, 43305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->getSrcValue(), SVOffset + Offset, 43405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->isVolatile(), 43505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 43605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Increment the pointers. 43705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Offset += RegBytes; 438bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 43905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Increment); 440bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 44105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 44205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 443fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // The last store may be partial. Do a truncating store. On big-endian 444fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // machines this requires an extending load from the stack slot to ensure 445fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // that the bits are in the right place. 44623b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 8 * (StoredBytes - Offset)); 447fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 448fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Load from the stack slot. 449bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Store, StackPtr, 450fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands NULL, 0, MemVT); 45105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 452bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, Ptr, 45305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->getSrcValue(), SVOffset + Offset, 454fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MemVT, ST->isVolatile(), 45505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 45605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The order of the stores doesn't matter - say it with a TokenFactor. 457825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 45805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Stores.size()); 45905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 460907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 46183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(ST->getMemoryVT().isInteger() && 46283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands !ST->getMemoryVT().isVector() && 463907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen "Unaligned store of unknown type."); 464f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Get the half-size VT 465e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewStoredVT = 466825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (MVT::SimpleValueType)(ST->getMemoryVT().getSimpleVT().SimpleTy - 1); 46783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands int NumBits = NewStoredVT.getSizeInBits(); 468f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int IncrementSize = NumBits / 8; 469f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 470f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Divide the stored value in two parts. 471475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 472475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = Val; 473bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Hi = DAG.getNode(ISD::SRL, dl, VT, Val, ShiftAmount); 474f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 475f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Store the two parts 476475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store1, Store2; 477bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store1 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Lo:Hi, Ptr, 478f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->getSrcValue(), SVOffset, NewStoredVT, 479f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->isVolatile(), Alignment); 480bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 481f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 482dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands Alignment = MinAlign(Alignment, IncrementSize); 483bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store2 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Hi:Lo, Ptr, 484f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->getSrcValue(), SVOffset + IncrementSize, 485f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio NewStoredVT, ST->isVolatile(), Alignment); 486f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 487825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Store1, Store2); 488f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 489f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 490f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedLoad - Expands an unaligned load to 2 half-size loads. 491f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 492475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedLoad(LoadSDNode *LD, SelectionDAG &DAG, 493e9530ecae4897fe8157bd4d7616043bd8c0484e2Dan Gohman const TargetLowering &TLI) { 494f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int SVOffset = LD->getSrcValueOffset(); 495475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = LD->getChain(); 496475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = LD->getBasePtr(); 497e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = LD->getValueType(0); 498e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT LoadedVT = LD->getMemoryVT(); 499bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = LD->getDebugLoc(); 50083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (VT.isFloatingPoint() || VT.isVector()) { 50123b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT intVT = EVT::getIntegerVT(*DAG.getContext(), LoadedVT.getSizeInBits()); 50205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 50305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a (misaligned) integer load of the same size, 50405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // then bitconvert to floating point or vector. 505bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue newLoad = DAG.getLoad(intVT, dl, Chain, Ptr, LD->getSrcValue(), 50605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset, LD->isVolatile(), 507907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen LD->getAlignment()); 508bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::BIT_CONVERT, dl, LoadedVT, newLoad); 50905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (VT.isFloatingPoint() && LoadedVT != VT) 510bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, VT, Result); 511907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen 51205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Ops[] = { Result, Chain }; 513bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 51405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } else { 51505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Copy the value to a (aligned) stack slot using (unaligned) integer 51605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // loads and stores, then do a (aligned) load from the stack slot. 51723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RegVT = TLI.getRegisterType(*DAG.getContext(), intVT); 51805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned LoadedBytes = LoadedVT.getSizeInBits() / 8; 51905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned RegBytes = RegVT.getSizeInBits() / 8; 52005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned NumRegs = (LoadedBytes + RegBytes - 1) / RegBytes; 52105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 522fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Make sure the stack slot is also aligned for the register type. 523fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands SDValue StackBase = DAG.CreateStackTemporary(LoadedVT, RegVT); 524fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 52505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 52605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SmallVector<SDValue, 8> Stores; 52705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue StackPtr = StackBase; 52805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned Offset = 0; 52905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 53005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do all but one copies using the full register width. 53105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands for (unsigned i = 1; i < NumRegs; i++) { 53205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Load one integer register's worth from the original location. 533bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getLoad(RegVT, dl, Chain, Ptr, LD->getSrcValue(), 53405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset + Offset, LD->isVolatile(), 53505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(LD->getAlignment(), Offset)); 53605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 537bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, StackPtr, 53805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands NULL, 0)); 53905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Increment the pointers. 54005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Offset += RegBytes; 541bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 542bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 54305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Increment); 54405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 54505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 54605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The last copy may be partial. Do an extending load. 54723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), 8 * (LoadedBytes - Offset)); 548bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Chain, Ptr, 54905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands LD->getSrcValue(), SVOffset + Offset, 550fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MemVT, LD->isVolatile(), 55105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(LD->getAlignment(), Offset)); 55205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 553fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // On big-endian machines this requires a truncating store to ensure 554fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // that the bits end up in the right place. 555bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, StackPtr, 556fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands NULL, 0, MemVT)); 55705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 55805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The order of the stores doesn't matter - say it with a TokenFactor. 559825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 56005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Stores.size()); 56105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 56205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Finally, perform the original load only redirected to the stack slot. 563bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Load = DAG.getExtLoad(LD->getExtensionType(), dl, VT, TF, StackBase, 56405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands NULL, 0, LoadedVT); 56505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 56605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Callers expect a MERGE_VALUES node. 56705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Ops[] = { Load, TF }; 568bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 56905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 570907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 57183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(LoadedVT.isInteger() && !LoadedVT.isVector() && 572e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner "Unaligned load of unsupported type."); 573e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner 5748155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // Compute the new VT that is half the size of the old one. This is an 5758155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // integer MVT. 57683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned NumBits = LoadedVT.getSizeInBits(); 577e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewLoadedVT; 57823b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson NewLoadedVT = EVT::getIntegerVT(*DAG.getContext(), NumBits/2); 579e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner NumBits >>= 1; 580fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 581e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned Alignment = LD->getAlignment(); 582e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned IncrementSize = NumBits / 8; 583f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ISD::LoadExtType HiExtType = LD->getExtensionType(); 584f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 585f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If the original load is NON_EXTLOAD, the hi part load must be ZEXTLOAD. 586f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (HiExtType == ISD::NON_EXTLOAD) 587f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio HiExtType = ISD::ZEXTLOAD; 588f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 589f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Load the value in two parts 590475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 591f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (TLI.isLittleEndian()) { 592bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getSrcValue(), 593f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset, NewLoadedVT, LD->isVolatile(), Alignment); 594bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 595f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 596bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getSrcValue(), 597f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset + IncrementSize, NewLoadedVT, LD->isVolatile(), 598dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands MinAlign(Alignment, IncrementSize)); 599f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 600bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getSrcValue(), 601ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson SVOffset, NewLoadedVT, LD->isVolatile(), Alignment); 602bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 603f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 604bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getSrcValue(), 605f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset + IncrementSize, NewLoadedVT, LD->isVolatile(), 606dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands MinAlign(Alignment, IncrementSize)); 607f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 608f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 609f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // aggregate the two parts 610475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 611bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::SHL, dl, VT, Hi, ShiftAmount); 612bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::OR, dl, VT, Result, Lo); 613f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 614825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 615f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Hi.getValue(1)); 616f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 617475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Result, TF }; 618bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 619f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 620912095becac923ff614d7b07728eb345ada67765Evan Cheng 6216867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// PerformInsertVectorEltInMemory - Some target cannot handle a variable 6226867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 6236867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// is necessary to spill the vector being inserted into to memory, perform 6246867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// the insert there, and then read the result back. 625475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize:: 626bb5da918545efb54857a09c983a5a7f22a7e04d4Dale JohannesenPerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, SDValue Idx, 627bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl) { 628475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1 = Vec; 629475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp2 = Val; 630475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = Idx; 631fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 6326867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // If the target doesn't support this, we have to spill the input vector 6336867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // to a temporary stack slot, update the element, then reload it. This is 6346867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // badness. We could also load the value into a vector register (either 6356867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // with a "move to register" or "extload into register" instruction, then 6366867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // permute it into place, if the idx is a constant and if the idx is 6376867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // supported by the target. 638e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp1.getValueType(); 639e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 640e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT IdxVT = Tmp3.getValueType(); 641e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PtrVT = TLI.getPointerTy(); 642475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(VT); 6436867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 644ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex(); 645ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 6466867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the vector. 647bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Tmp1, StackPtr, 648ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng PseudoSourceValue::getFixedStack(SPFI), 0); 6496867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 6506867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Truncate or zero extend offset to target pointer type. 6518e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands unsigned CastOpc = IdxVT.bitsGT(PtrVT) ? ISD::TRUNCATE : ISD::ZERO_EXTEND; 652bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(CastOpc, dl, PtrVT, Tmp3); 6536867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Add the offset to the index. 65483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned EltSize = EltVT.getSizeInBits()/8; 655bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(ISD::MUL, dl, IdxVT, Tmp3,DAG.getConstant(EltSize, IdxVT)); 656bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue StackPtr2 = DAG.getNode(ISD::ADD, dl, IdxVT, Tmp3, StackPtr); 6576867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the scalar value. 658bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ch = DAG.getTruncStore(Ch, dl, Tmp2, StackPtr2, 659ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng PseudoSourceValue::getFixedStack(SPFI), 0, EltVT); 6606867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Load the updated vector. 661bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getLoad(VT, dl, Ch, StackPtr, 662ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng PseudoSourceValue::getFixedStack(SPFI), 0); 6636867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman} 6646867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 665e9f1015d1f184a51aaadfd03be0846bd5e7d08a2Mon P Wang 6663f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanSDValue SelectionDAGLegalize:: 6673f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, SDValue Idx, DebugLoc dl) { 6683f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (ConstantSDNode *InsertPos = dyn_cast<ConstantSDNode>(Idx)) { 6693f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // SCALAR_TO_VECTOR requires that the type of the value being inserted 6703f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // match the element type of the vector being created, except for 6713f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // integers in which case the inserted value can be over width. 672e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = Vec.getValueType().getVectorElementType(); 6733f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (Val.getValueType() == EltVT || 6743f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman (EltVT.isInteger() && Val.getValueType().bitsGE(EltVT))) { 6753f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ScVec = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, 6763f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Vec.getValueType(), Val); 6773f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6783f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman unsigned NumElts = Vec.getValueType().getVectorNumElements(); 6793f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // We generate a shuffle of InVec and ScVec, so the shuffle mask 6803f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // should be 0,1,2,3,4,5... with the appropriate element replaced with 6813f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // elt 0 of the RHS. 6823f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SmallVector<int, 8> ShufOps; 6833f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0; i != NumElts; ++i) 6843f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman ShufOps.push_back(i != InsertPos->getZExtValue() ? i : NumElts); 6853f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6863f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return DAG.getVectorShuffle(Vec.getValueType(), dl, Vec, ScVec, 6873f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman &ShufOps[0]); 6883f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 6893f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 6903f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return PerformInsertVectorEltInMemory(Vec, Val, Idx, dl); 6913f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman} 6923f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6937ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::OptimizeFloatStore(StoreSDNode* ST) { 6947ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Turn 'store float 1.0, Ptr' -> 'store int 0x12345678, Ptr' 6957ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: We shouldn't do this for TargetConstantFP's. 6967ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: move this to the DAG Combiner! Note that we can't regress due 6977ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // to phase ordering between legalized code and the dag combiner. This 6987ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // probably means that we need to integrate dag combiner and legalizer 6997ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // together. 7007ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We generally can't do this one for long doubles. 7017ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp1 = ST->getChain(); 7027ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp2 = ST->getBasePtr(); 7037ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp3; 7047ef3d178660b82d1571757e49f44b004d772a116Eli Friedman int SVOffset = ST->getSrcValueOffset(); 7057ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Alignment = ST->getAlignment(); 7067ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bool isVolatile = ST->isVolatile(); 7077ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = ST->getDebugLoc(); 7087ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(ST->getValue())) { 709825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (CFP->getValueType(0) == MVT::f32 && 710825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson getTypeAction(MVT::i32) == Legal) { 7117ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF(). 7127ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bitcastToAPInt().zextOrTrunc(32), 713825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::i32); 7147ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 7157ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SVOffset, isVolatile, Alignment); 716825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (CFP->getValueType(0) == MVT::f64) { 7177ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // If this target supports 64-bit registers, do a single 64-bit store. 718825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (getTypeAction(MVT::i64) == Legal) { 7197ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF().bitcastToAPInt(). 720825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson zextOrTrunc(64), MVT::i64); 7217ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 7227ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SVOffset, isVolatile, Alignment); 723825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (getTypeAction(MVT::i32) == Legal && !ST->isVolatile()) { 7247ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, if the target supports 32-bit registers, use 2 32-bit 7257ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // stores. If the target supports neither 32- nor 64-bits, this 7267ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // xform is certainly not worth it. 7277ef3d178660b82d1571757e49f44b004d772a116Eli Friedman const APInt &IntVal =CFP->getValueAPF().bitcastToAPInt(); 728825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Lo = DAG.getConstant(APInt(IntVal).trunc(32), MVT::i32); 729825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Hi = DAG.getConstant(IntVal.lshr(32).trunc(32), MVT::i32); 7307ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (TLI.isBigEndian()) std::swap(Lo, Hi); 7317ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 7327ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Lo = DAG.getStore(Tmp1, dl, Lo, Tmp2, ST->getSrcValue(), 7337ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SVOffset, isVolatile, Alignment); 7347ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 7357ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DAG.getIntPtrConstant(4)); 7367ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Hi = DAG.getStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), SVOffset+4, 7377ef3d178660b82d1571757e49f44b004d772a116Eli Friedman isVolatile, MinAlign(Alignment, 4U)); 7387ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 739825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 7407ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7417ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7427ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7437ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return SDValue(); 7447ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 7457ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 746a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// LegalizeOp - We know that the specified value has a legal type, and 747a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// that its operands are legal. Now ensure that the operation itself 748a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// is legal, recursively ensuring that the operands' operations remain 749a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// legal. 750475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) { 75109ec1b058331aadb29a348091611d23892b5c492Chris Lattner if (Op.getOpcode() == ISD::TargetConstant) // Allow illegal target nodes. 75209ec1b058331aadb29a348091611d23892b5c492Chris Lattner return Op; 753fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 754ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif SDNode *Node = Op.getNode(); 7557d2ad624fa749a6d3edac0d94e9c107989c16304Dale Johannesen DebugLoc dl = Node->getDebugLoc(); 756e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner 7571fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 7581fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman assert(getTypeAction(Node->getValueType(i)) == Legal && 7591fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7601fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman 7611fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 7621fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman assert((isTypeLegal(Node->getOperand(i).getValueType()) || 7631fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman Node->getOperand(i).getOpcode() == ISD::TargetConstant) && 7641fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 76645982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 76745982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 768475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 769e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (I != LegalizedNodes.end()) return I->second; 7703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 771475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 772475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result = Op; 773456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner bool isCustom = false; 774fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 7758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Figure out the correct action; the way to query this varies by opcode 7768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::LegalizeAction Action; 7778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman bool SimpleFinishLegalizing = true; 7783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 7798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_W_CHAIN: 7808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_WO_CHAIN: 7818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_VOID: 7828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAARG: 7838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STACKSAVE: 784825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Action = TLI.getOperationAction(Node->getOpcode(), MVT::Other); 7858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 7868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 7878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 7888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 7898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 7908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType()); 7918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 7928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: 7938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 794e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT InnerType = cast<VTSDNode>(Node->getOperand(1))->getVT(); 7958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), InnerType); 7968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 7978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 7983be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SELECT_CC: 7993be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SETCC: 8003be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::BR_CC: { 8013be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CCOperand = Node->getOpcode() == ISD::SELECT_CC ? 4 : 8023be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getOpcode() == ISD::SETCC ? 2 : 1; 8033be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CompareOperand = Node->getOpcode() == ISD::BR_CC ? 2 : 0; 804e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(CompareOperand).getValueType(); 8053be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman ISD::CondCode CCCode = 8063be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman cast<CondCodeSDNode>(Node->getOperand(CCOperand))->get(); 8073be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getCondCodeAction(CCCode, OpVT); 8083be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Action == TargetLowering::Legal) { 8093be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Node->getOpcode() == ISD::SELECT_CC) 8103be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 8113be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getValueType(0)); 8123be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman else 8133be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), OpVT); 8143be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8153be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 8163be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::LOAD: 8188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STORE: 819ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: Model these properly. LOAD and STORE are complicated, and 820ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // STORE expects the unlegalized operand in some cases. 821ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 822ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_START: 8248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_END: 825ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: This shouldn't be necessary. These nodes have special properties 826ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // dealing with the recursive nature of legalization. Removing this 827ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // special case should be done as part of making LegalizeDAG non-recursive. 828ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 829ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: 8318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 8328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SADDO: 8338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SSUBO: 8348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UADDO: 8358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::USUBO: 8368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SMULO: 8378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UMULO: 8388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FPOWI: 8398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 8408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 8418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 842f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // These operations lie about being legal: when they claim to be legal, 843f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // they should actually be expanded. 8448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Action == TargetLowering::Legal) 8468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Expand; 8478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAMPOLINE: 8498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 8508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 8514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // These operations lie about being legal: when they claim to be legal, 8524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // they should actually be custom-lowered. 8534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Action == TargetLowering::Legal) 8554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TargetLowering::Custom; 8568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BUILD_VECTOR: 858b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // A weird case: legalization for BUILD_VECTOR never legalizes the 859b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // operands! 860b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // FIXME: This really sucks... changing it isn't semantically incorrect, 861b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // but it massively pessimizes the code for floating-point BUILD_VECTORs 862b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // because ConstantFP operands get legalized into constant pool loads 863b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // before the BUILD_VECTOR code can see them. It doesn't usually bite, 864b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // though, because BUILD_VECTORS usually get lowered into other nodes 865b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // which get legalized properly. 8668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SimpleFinishLegalizing = false; 867948c1b1cda280c6428dbeaa03a6c2c559dbb93f4Chris Lattner break; 8683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 869d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner if (Node->getOpcode() >= ISD::BUILTIN_OP_END) { 8708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Legal; 8718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 8728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 8748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 876d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner 8778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (SimpleFinishLegalizing) { 8788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVector<SDValue, 8> Ops, ResultVals; 8798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 8808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops.push_back(LegalizeOp(Node->getOperand(i))); 8818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 8828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: break; 8838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR: 8848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRIND: 8858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_JT: 8868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_CC: 8878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRCOND: 8888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Branches tweak the chain to include LastCALLSEQ_END 889825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ops[0] = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Ops[0], 8908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END); 8918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[0] = LegalizeOp(Ops[0]); 8928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 8938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SHL: 8958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRL: 8968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRA: 8978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTL: 8988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTR: 8998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Legalizing shifts/rotates requires adjusting the shift amount 9008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // to the appropriate width. 9018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!Ops[1].getValueType().isVector()) 9028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[1] = LegalizeOp(DAG.getShiftAmountOperand(Ops[1])); 9038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 904db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SRL_PARTS: 905db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SRA_PARTS: 906db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman case ISD::SHL_PARTS: 907db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman // Legalizing shifts/rotates requires adjusting the shift amount 908db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman // to the appropriate width. 909db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman if (!Ops[2].getValueType().isVector()) 910db8dc2b9faf346fbfa04c07f501981250948f5e2Dan Gohman Ops[2] = LegalizeOp(DAG.getShiftAmountOperand(Ops[2])); 9112c9489d6e96d99f77b6c31919805b5e61954deb2Dan Gohman break; 9128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Result = DAG.UpdateNodeOperands(Result.getValue(0), Ops.data(), 9158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops.size()); 9168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Action) { 9178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Legal: 918d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 9198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Result.getValue(i)); 9208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Custom: 9228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FIXME: The handling for custom lowering with multiple results is 9238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // a complete mess. 9248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = TLI.LowerOperation(Result, DAG); 9258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Tmp1.getNode()) { 9268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) { 9278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (e == 1) 9288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1); 9298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 9308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1.getValue(i)); 9318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FALL THROUGH 9368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Expand: 9378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ExpandNode(Result.getNode(), ResultVals); 9388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Promote: 9408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman PromoteNode(Result.getNode(), ResultVals); 9418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!ResultVals.empty()) { 9448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = ResultVals.size(); i != e; ++i) { 9458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (ResultVals[i] != SDValue(Node, i)) 9468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals[i] = LegalizeOp(ResultVals[i]); 9478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman AddLegalizedOperand(SDValue(Node, i), ResultVals[i]); 9488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman return ResultVals[Op.getResNo()]; 950d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner } 9518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 9548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: 955e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#ifndef NDEBUG 95645cfe545ec8177262dabc70580ce05feaa1c3880Chris Lattner errs() << "NODE: "; 95745cfe545ec8177262dabc70580ce05feaa1c3880Chris Lattner Node->dump(&DAG); 95845cfe545ec8177262dabc70580ce05feaa1c3880Chris Lattner errs() << "\n"; 959e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#endif 960c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Do not know how to legalize this operator!"); 96198ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman 962b2827b0901162169bb2692b77a839c9767849134Chris Lattner case ISD::BUILD_VECTOR: 963b2827b0901162169bb2692b77a839c9767849134Chris Lattner switch (TLI.getOperationAction(ISD::BUILD_VECTOR, Node->getValueType(0))) { 964c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 9652332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner case TargetLowering::Custom: 9662332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Tmp3 = TLI.LowerOperation(Result, DAG); 967ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()) { 9682332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Result = Tmp3; 9692332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 9702332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 9712332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner // FALLTHROUGH 972ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner case TargetLowering::Expand: 973ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandBUILD_VECTOR(Result.getNode()); 974b2827b0901162169bb2692b77a839c9767849134Chris Lattner break; 9752332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 9762332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 9776831a815999dde4cf801e2076e66b4943964daf2Chris Lattner case ISD::CALLSEQ_START: { 9786831a815999dde4cf801e2076e66b4943964daf2Chris Lattner SDNode *CallEnd = FindCallEndFromCallStart(Node); 979fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 9806831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Recursively Legalize all of the inputs of the call end that do not lead 9816831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // to this call start. This ensures that any libcalls that need be inserted 9826831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // are inserted *before* the CALLSEQ_START. 98300755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner {SmallPtrSet<SDNode*, 32> NodesLeadingTo; 9846831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = CallEnd->getNumOperands(); i != e; ++i) 985ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif LegalizeAllNodesNotLeadingTo(CallEnd->getOperand(i).getNode(), Node, 986c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo); 987c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 9886831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 9896831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Now that we legalized all of the inputs (which may have inserted 9906831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // libcalls) create the new CALLSEQ_START node. 9916831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 9926831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 9936831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Merge in the last call, to ensure that this call start after the last 9946831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // call ended. 995c5d7d7c715f7b7a4eeea1ceaafefc3d1d6df2addChris Lattner if (LastCALLSEQ_END.getOpcode() != ISD::EntryToken) { 996825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 997ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp1, LastCALLSEQ_END); 998b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner Tmp1 = LegalizeOp(Tmp1); 999b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner } 1000fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10016831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Do not try to legalize the target-specific arguments (#1+). 10026831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Tmp1 != Node->getOperand(0)) { 1003475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 10046831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Ops[0] = Tmp1; 1005f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 10066831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1007fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10086831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Remember that the CALLSEQ_START is legalized. 10094b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(0), Result); 10104b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) // If this has a flag result, remember it. 10114b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 1012fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10136831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Now that the callseq_start and all of the non-call nodes above this call 1014fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // sequence have been legalized, legalize the call itself. During this 10156831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // process, no libcalls can/will be inserted, guaranteeing that no calls 10166831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // can overlap. 10176831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "Inconsistent sequentialization of calls!"); 10186831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Note that we are selecting this call! 1019475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LastCALLSEQ_END = SDValue(CallEnd, 0); 10206831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = true; 1021fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10226831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call, starting from the CALLSEQ_END. 10236831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(LastCALLSEQ_END); 10246831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "CALLSEQ_END should have cleared this!"); 10256831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 10266831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 102716cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner case ISD::CALLSEQ_END: 10286831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the CALLSEQ_START node hasn't been legalized first, legalize it. This 10296831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // will cause this node to be legalized as well as handling libcalls right. 1030ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (LastCALLSEQ_END.getNode() != Node) { 1031475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LegalizeOp(SDValue(FindCallStartFromCallEnd(Node), 0)); 1032475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 10336831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(I != LegalizedNodes.end() && 10346831a815999dde4cf801e2076e66b4943964daf2Chris Lattner "Legalizing the call start should have legalized this node!"); 10356831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return I->second; 10366831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1037fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1038fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, the call start has been legalized and everything is going 10396831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // according to plan. Just legalize ourselves normally here. 10403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 104170814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // Do not try to legalize the target-specific arguments (#1+), except for 104270814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // an optional flag input. 1043825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Node->getOperand(Node->getNumOperands()-1).getValueType() != MVT::Flag){ 104470814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0)) { 1045475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 104670814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 1047f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 104870814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 104970814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } else { 105070814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(Node->getNumOperands()-1)); 105170814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0) || 105270814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 != Node->getOperand(Node->getNumOperands()-1)) { 1053475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 105470814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 105570814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops.back() = Tmp2; 1056f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 105770814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 10586a5428934ba6159c1acc541944332e51a6cfa59aChris Lattner } 10594b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner assert(IsLegalizingCall && "Call sequence imbalance between start/end?"); 10606831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // This finishes up call legalization. 10616831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = false; 1062fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10634b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner // If the CALLSEQ_END node has a flag, remember that we legalized it. 1064475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Result.getValue(0)); 10654b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) 1066475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Result.getValue(1)); 106799a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Result.getValue(Op.getResNo()); 1068f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::LOAD: { 1069466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng LoadSDNode *LD = cast<LoadSDNode>(Node); 1070466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = LegalizeOp(LD->getChain()); // Legalize the chain. 1071466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp2 = LegalizeOp(LD->getBasePtr()); // Legalize the base pointer. 10722d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 1073466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng ISD::LoadExtType ExtType = LD->getExtensionType(); 1074466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng if (ExtType == ISD::NON_EXTLOAD) { 1075e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1076466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, LD->getOffset()); 1077466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = Result.getValue(0); 1078466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = Result.getValue(1); 1079fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1080466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng switch (TLI.getOperationAction(Node->getOpcode(), VT)) { 1081c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 1082f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1083f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned load and the target doesn't support it, 1084f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1085bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) { 1086e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = LD->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1087e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 1088f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (LD->getAlignment() < ABIAlignment){ 1089debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 1090debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson DAG, TLI); 1091f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp3 = Result.getOperand(0); 1092f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp4 = Result.getOperand(1); 1093907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp3 = LegalizeOp(Tmp3); 1094907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp4 = LegalizeOp(Tmp4); 1095f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1096f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1097f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 1098466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Custom: 1099466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = TLI.LowerOperation(Tmp3, DAG); 1100ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) { 1101466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = LegalizeOp(Tmp1); 1102466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1103466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1104466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1105466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Promote: { 1106466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Only promote a load of vector type to another. 110783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Cannot promote this load!"); 1108466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Change base type to a different vector type. 1109e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), VT); 1110466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng 1111ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp1 = DAG.getLoad(NVT, dl, Tmp1, Tmp2, LD->getSrcValue(), 1112d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman LD->getSrcValueOffset(), 1113d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman LD->isVolatile(), LD->getAlignment()); 1114b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen Tmp3 = LegalizeOp(DAG.getNode(ISD::BIT_CONVERT, dl, VT, Tmp1)); 111541f6cbbeb21d7d4376b8c0302b9766c3e43be5f2Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1116466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1117f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 1118466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1119fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Since loads produce two values, make sure to remember that we 1120466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // legalized both of them. 1121475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp3); 1122475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp4); 112399a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Op.getResNo() ? Tmp4 : Tmp3; 1124466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } else { 1125e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SrcVT = LD->getMemoryVT(); 112683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SrcWidth = SrcVT.getSizeInBits(); 1127f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands int SVOffset = LD->getSrcValueOffset(); 1128f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned Alignment = LD->getAlignment(); 1129f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands bool isVolatile = LD->isVolatile(); 1130f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 113183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (SrcWidth != SrcVT.getStoreSizeInBits() && 1132f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Some targets pretend to have an i1 loading operation, and actually 1133f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // load an i8. This trick is correct for ZEXTLOAD because the top 7 1134f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // bits are guaranteed to be zero; it helps the optimizers understand 1135f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // that these bits are zero. It is also useful for EXTLOAD, since it 1136f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // tells the optimizers that those bits are undefined. It would be 1137f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // nice to have an effective generic way of getting these benefits... 1138f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Until such a way is found, don't insist on promoting i1 here. 1139825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (SrcVT != MVT::i1 || 1140825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson TLI.getLoadExtAction(ExtType, MVT::i1) == TargetLowering::Promote)) { 1141f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Promote to a byte-sized load if not loading an integral number of 1142f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // bytes. For example, promote EXTLOAD:i20 -> EXTLOAD:i24. 114383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned NewWidth = SrcVT.getStoreSizeInBits(); 114423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = EVT::getIntegerVT(*DAG.getContext(), NewWidth); 1145475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch; 1146f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1147f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // The extra bits are guaranteed to be zero, since we stored them that 1148f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // way. A zext load from NVT thus automatically gives zext from SrcVT. 1149f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1150f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ISD::LoadExtType NewExtType = 1151f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ExtType == ISD::ZEXTLOAD ? ISD::ZEXTLOAD : ISD::EXTLOAD; 1152f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1153ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getExtLoad(NewExtType, dl, Node->getValueType(0), 1154f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1, Tmp2, LD->getSrcValue(), SVOffset, 1155f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands NVT, isVolatile, Alignment); 1156f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1157f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Ch = Result.getValue(1); // The chain. 1158f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1159f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (ExtType == ISD::SEXTLOAD) 1160f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Having the top bits zero doesn't help when sign extending. 1161fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 1162ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), 1163f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result, DAG.getValueType(SrcVT)); 1164f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands else if (ExtType == ISD::ZEXTLOAD || NVT == Result.getValueType()) 1165f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // All the top bits are guaranteed to be zero - inform the optimizers. 1166fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::AssertZext, dl, 1167ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), Result, 1168f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getValueType(SrcVT)); 1169f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1170f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); 1171f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Ch); 1172f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else if (SrcWidth & (SrcWidth - 1)) { 1173f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // If not loading a power-of-2 number of bits, expand as two loads. 117483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(SrcVT.isExtended() && !SrcVT.isVector() && 1175f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands "Unsupported extload!"); 1176f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned RoundWidth = 1 << Log2_32(SrcWidth); 1177f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(RoundWidth < SrcWidth); 1178f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned ExtraWidth = SrcWidth - RoundWidth; 1179f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(ExtraWidth < RoundWidth); 1180f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 1181f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands "Load size not an integral number of bytes!"); 118223b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 118323b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 1184475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi, Ch; 1185f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned IncrementSize; 1186f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1187f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (TLI.isLittleEndian()) { 1188f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // EXTLOAD:i24 -> ZEXTLOAD:i16 | (shl EXTLOAD@+2:i8, 16) 1189f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the bottom RoundWidth bits. 1190ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, 1191ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Tmp1, Tmp2, 1192f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset, RoundVT, isVolatile, 1193f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Alignment); 1194f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1195f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the remaining ExtraWidth bits. 1196f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands IncrementSize = RoundWidth / 8; 1197ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 1198f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getIntPtrConstant(IncrementSize)); 1199ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2, 1200f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset + IncrementSize, 1201f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ExtraVT, isVolatile, 1202f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands MinAlign(Alignment, IncrementSize)); 1203f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1204f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Build a factor node to remember that this load is independent of the 1205f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // other one. 1206825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 1207f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Hi.getValue(1)); 1208f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1209f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Move the top bits to the right place. 1210ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 1211f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getConstant(RoundWidth, TLI.getShiftAmountTy())); 1212f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1213f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Join the hi and lo parts. 1214ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 1215f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 1216f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Big endian - avoid unaligned loads. 1217f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // EXTLOAD:i24 -> (shl EXTLOAD:i16, 8) | ZEXTLOAD@+2:i8 1218f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the top RoundWidth bits. 1219ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2, 1220f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset, RoundVT, isVolatile, 1221f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Alignment); 1222f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1223f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the remaining ExtraWidth bits. 1224f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands IncrementSize = RoundWidth / 8; 1225ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 1226f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getIntPtrConstant(IncrementSize)); 1227fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, 1228ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Tmp1, Tmp2, 1229f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset + IncrementSize, 1230f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ExtraVT, isVolatile, 1231f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands MinAlign(Alignment, IncrementSize)); 1232f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1233f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Build a factor node to remember that this load is independent of the 1234f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // other one. 1235825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 1236f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Hi.getValue(1)); 1237f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1238f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Move the top bits to the right place. 1239ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 1240f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy())); 1241f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1242f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Join the hi and lo parts. 1243ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 1244f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1245f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1246f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); 1247f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Ch); 1248f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else { 12490329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng switch (TLI.getLoadExtAction(ExtType, SrcVT)) { 1250c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 1251f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Custom: 1252f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands isCustom = true; 1253f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // FALLTHROUGH 1254f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Legal: 1255f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, LD->getOffset()); 1256f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = Result.getValue(0); 1257f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = Result.getValue(1); 1258f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1259f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (isCustom) { 1260f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp3 = TLI.LowerOperation(Result, DAG); 1261ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()) { 1262f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Tmp3); 1263f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Tmp3.getValue(1)); 1264f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1265f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else { 1266f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // If this is an unaligned load and the target doesn't support it, 1267f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // expand it. 1268bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(LD->getMemoryVT())) { 1269e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = LD->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1270e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 1271f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (LD->getAlignment() < ABIAlignment){ 1272debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 1273debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson DAG, TLI); 1274f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = Result.getOperand(0); 1275f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = Result.getOperand(1); 1276f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Tmp1); 1277f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Tmp2); 1278f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1279f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1280f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1281f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 1282f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Expand: 1283f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // f64 = EXTLOAD f32 should expand to LOAD, FP_EXTEND 128462c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov // f128 = EXTLOAD {f32,f64} too 128562c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov if ((SrcVT == MVT::f32 && (Node->getValueType(0) == MVT::f64 || 128662c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov Node->getValueType(0) == MVT::f128)) || 128762c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov (SrcVT == MVT::f64 && Node->getValueType(0) == MVT::f128)) { 1288ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen SDValue Load = DAG.getLoad(SrcVT, dl, Tmp1, Tmp2, LD->getSrcValue(), 128962c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov LD->getSrcValueOffset(), 129062c77d33b18937ea0b246be3631df082cd621126Anton Korobeynikov LD->isVolatile(), LD->getAlignment()); 1291fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::FP_EXTEND, dl, 1292ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Load); 1293f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); // Relegalize new nodes. 1294f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Load.getValue(1)); 1295f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 1296f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1297f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(ExtType != ISD::EXTLOAD &&"EXTLOAD should always be supported!"); 1298f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Turn the unsupported load into an EXTLOAD followed by an explicit 1299f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // zero/sign extend inreg. 1300ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getExtLoad(ISD::EXTLOAD, dl, Node->getValueType(0), 1301f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1, Tmp2, LD->getSrcValue(), 1302f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValueOffset(), SrcVT, 1303f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->isVolatile(), LD->getAlignment()); 1304475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ValRes; 1305f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (ExtType == ISD::SEXTLOAD) 1306ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen ValRes = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 1307ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), 1308f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result, DAG.getValueType(SrcVT)); 1309f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands else 1310ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen ValRes = DAG.getZeroExtendInReg(Result, dl, SrcVT); 1311f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(ValRes); // Relegalize new nodes. 1312f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Result.getValue(1)); // Relegalize new nodes. 1313466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1314466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 13159d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth } 1316f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1317466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Since loads produce two values, make sure to remember that we legalized 1318466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // both of them. 1319475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp1); 1320475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp2); 132199a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Op.getResNo() ? Tmp2 : Tmp1; 132201ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 132301ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 1324f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::STORE: { 13258b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng StoreSDNode *ST = cast<StoreSDNode>(Node); 13268b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = LegalizeOp(ST->getChain()); // Legalize the chain. 13278b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp2 = LegalizeOp(ST->getBasePtr()); // Legalize the pointer. 1328d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman int SVOffset = ST->getSrcValueOffset(); 1329d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman unsigned Alignment = ST->getAlignment(); 1330d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman bool isVolatile = ST->isVolatile(); 13318b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 13328b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng if (!ST->isTruncatingStore()) { 13337ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (SDNode *OptStore = OptimizeFloatStore(ST).getNode()) { 13347ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Result = SDValue(OptStore, 0); 13357ef3d178660b82d1571757e49f44b004d772a116Eli Friedman break; 1336d93d46ee7e0a0e539d42139b85c71b2b8c3968feChris Lattner } 1337fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1338957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman { 13398b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp3 = LegalizeOp(ST->getValue()); 1340fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2, 13418b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng ST->getOffset()); 13428b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 1343e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Tmp3.getValueType(); 13448b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng switch (TLI.getOperationAction(ISD::STORE, VT)) { 1345c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 1346f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1347f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned store and the target doesn't support it, 1348f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1349bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) { 1350e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1351e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 1352f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (ST->getAlignment() < ABIAlignment) 1353e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), 1354e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng DAG, TLI); 1355f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1356f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 13578b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Custom: 13588b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = TLI.LowerOperation(Result, DAG); 1359ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) Result = Tmp1; 13608b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 13618b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Promote: 136283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Unknown legal promote case!"); 1363fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Tmp3 = DAG.getNode(ISD::BIT_CONVERT, dl, 13648b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng TLI.getTypeToPromoteTo(ISD::STORE, VT), Tmp3); 1365ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, 1366d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman ST->getSrcValue(), SVOffset, isVolatile, 1367d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman Alignment); 13688b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 13698b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 13702efce0a589e2a688a1a06b5dc2ed0db32ae79924Chris Lattner break; 1371f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 13728b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } else { 1373957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman Tmp3 = LegalizeOp(ST->getValue()); 13747e857201f387d004571e6058e2ea709163500f38Duncan Sands 1375e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT StVT = ST->getMemoryVT(); 137683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned StWidth = StVT.getSizeInBits(); 13777e857201f387d004571e6058e2ea709163500f38Duncan Sands 137883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (StWidth != StVT.getStoreSizeInBits()) { 13797e857201f387d004571e6058e2ea709163500f38Duncan Sands // Promote to a byte-sized store with upper bits zero if not 13807e857201f387d004571e6058e2ea709163500f38Duncan Sands // storing an integral number of bytes. For example, promote 13817e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i1 X -> TRUNCSTORE:i8 (and X, 1) 138223b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT NVT = EVT::getIntegerVT(*DAG.getContext(), StVT.getStoreSizeInBits()); 1383ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getZeroExtendInReg(Tmp3, dl, StVT); 1384ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 13857e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset, NVT, isVolatile, Alignment); 13867e857201f387d004571e6058e2ea709163500f38Duncan Sands } else if (StWidth & (StWidth - 1)) { 13877e857201f387d004571e6058e2ea709163500f38Duncan Sands // If not storing a power-of-2 number of bits, expand as two stores. 138883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(StVT.isExtended() && !StVT.isVector() && 13897e857201f387d004571e6058e2ea709163500f38Duncan Sands "Unsupported truncstore!"); 13907e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned RoundWidth = 1 << Log2_32(StWidth); 13917e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(RoundWidth < StWidth); 13927e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned ExtraWidth = StWidth - RoundWidth; 13937e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(ExtraWidth < RoundWidth); 13947e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 13957e857201f387d004571e6058e2ea709163500f38Duncan Sands "Store size not an integral number of bytes!"); 139623b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT RoundVT = EVT::getIntegerVT(*DAG.getContext(), RoundWidth); 139723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT ExtraVT = EVT::getIntegerVT(*DAG.getContext(), ExtraWidth); 1398475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 13997e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned IncrementSize; 14007e857201f387d004571e6058e2ea709163500f38Duncan Sands 14017e857201f387d004571e6058e2ea709163500f38Duncan Sands if (TLI.isLittleEndian()) { 14027e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 X, TRUNCSTORE@+2:i8 (srl X, 16) 14037e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the bottom RoundWidth bits. 1404ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14057e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset, RoundVT, 14067e857201f387d004571e6058e2ea709163500f38Duncan Sands isVolatile, Alignment); 14077e857201f387d004571e6058e2ea709163500f38Duncan Sands 14087e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14097e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1410ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14117e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1412ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 14137e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(RoundWidth, TLI.getShiftAmountTy())); 1414ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), 14157e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset + IncrementSize, ExtraVT, isVolatile, 14167e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 14177e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 14187e857201f387d004571e6058e2ea709163500f38Duncan Sands // Big endian - avoid unaligned stores. 14197e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 (srl X, 8), TRUNCSTORE@+2:i8 X 14207e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the top RoundWidth bits. 1421ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 14227e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy())); 1423ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), 1424ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen SVOffset, RoundVT, isVolatile, Alignment); 14257e857201f387d004571e6058e2ea709163500f38Duncan Sands 14267e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14277e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1428ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14297e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1430ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14317e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset + IncrementSize, ExtraVT, isVolatile, 14327e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 14337e857201f387d004571e6058e2ea709163500f38Duncan Sands } 1434c7029805ef35ce9805931067b841e6af11db382eChris Lattner 14357e857201f387d004571e6058e2ea709163500f38Duncan Sands // The order of the stores doesn't matter. 1436825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Result = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 14377e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 14387e857201f387d004571e6058e2ea709163500f38Duncan Sands if (Tmp1 != ST->getChain() || Tmp3 != ST->getValue() || 14397e857201f387d004571e6058e2ea709163500f38Duncan Sands Tmp2 != ST->getBasePtr()) 14407e857201f387d004571e6058e2ea709163500f38Duncan Sands Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2, 14417e857201f387d004571e6058e2ea709163500f38Duncan Sands ST->getOffset()); 14427e857201f387d004571e6058e2ea709163500f38Duncan Sands 14437e857201f387d004571e6058e2ea709163500f38Duncan Sands switch (TLI.getTruncStoreAction(ST->getValue().getValueType(), StVT)) { 1444c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 14457e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Legal: 14467e857201f387d004571e6058e2ea709163500f38Duncan Sands // If this is an unaligned store and the target doesn't support it, 14477e857201f387d004571e6058e2ea709163500f38Duncan Sands // expand it. 1448bc037cfcdef8e88274d7dd167fb9d8ba545f2229Benjamin Kramer if (!TLI.allowsUnalignedMemoryAccesses(ST->getMemoryVT())) { 1449e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng const Type *Ty = ST->getMemoryVT().getTypeForEVT(*DAG.getContext()); 1450e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng unsigned ABIAlignment = TLI.getTargetData()->getABITypeAlignment(Ty); 14517e857201f387d004571e6058e2ea709163500f38Duncan Sands if (ST->getAlignment() < ABIAlignment) 1452e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), 1453e96507c73111d88743a15db6d6329f4fbdde7decEvan Cheng DAG, TLI); 14547e857201f387d004571e6058e2ea709163500f38Duncan Sands } 14557e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 14567e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Custom: 14577e857201f387d004571e6058e2ea709163500f38Duncan Sands Result = TLI.LowerOperation(Result, DAG); 14587e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 14597e857201f387d004571e6058e2ea709163500f38Duncan Sands case Expand: 14607e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i16 i32 -> STORE i16 14617e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(isTypeLegal(StVT) && "Do not know how to expand this store!"); 1462ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getNode(ISD::TRUNCATE, dl, StVT, Tmp3); 1463ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 1464ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen SVOffset, isVolatile, Alignment); 14657e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 1466f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 14678b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 14683e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 14693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 1470f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 147145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 14724ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner assert(Result.getValueType() == Op.getValueType() && 14734ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner "Bad legalization!"); 1474fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1475456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner // Make sure that the generated code is itself legal. 1476456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner if (Result != Op) 1477456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner Result = LegalizeOp(Result); 14783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 147945982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 148045982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 148145982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner AddLegalizedOperand(Op, Result); 14823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return Result; 14833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 14843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 14853d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli FriedmanSDValue SelectionDAGLegalize::ExpandExtractFromVectorThroughStack(SDValue Op) { 14863d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Vec = Op.getOperand(0); 14873d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Idx = Op.getOperand(1); 14883d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DebugLoc dl = Op.getDebugLoc(); 14893d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Store the value to a temporary stack slot, then LOAD the returned part. 14903d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue StackPtr = DAG.CreateStackTemporary(Vec.getValueType()); 14913d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Vec, StackPtr, NULL, 0); 14923d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 14933d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Add the offset to the index. 14942a35b1c54ba55a917e01e0043efcf67e20505953Eli Friedman unsigned EltSize = 14952a35b1c54ba55a917e01e0043efcf67e20505953Eli Friedman Vec.getValueType().getVectorElementType().getSizeInBits()/8; 14963d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::MUL, dl, Idx.getValueType(), Idx, 14973d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DAG.getConstant(EltSize, Idx.getValueType())); 14983d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 14993d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman if (Idx.getValueType().bitsGT(TLI.getPointerTy())) 15003d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::TRUNCATE, dl, TLI.getPointerTy(), Idx); 15013d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman else 15023d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::ZERO_EXTEND, dl, TLI.getPointerTy(), Idx); 15033d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15043d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman StackPtr = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, StackPtr); 15053d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 1506c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman if (Op.getValueType().isVector()) 1507c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman return DAG.getLoad(Op.getValueType(), dl, Ch, StackPtr, NULL, 0); 1508c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman else 1509c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman return DAG.getExtLoad(ISD::EXTLOAD, dl, Op.getValueType(), Ch, StackPtr, 1510c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman NULL, 0, Vec.getValueType().getVectorElementType()); 15113d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman} 15123d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15137ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::ExpandVectorBuildThroughStack(SDNode* Node) { 15147ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We can't handle this case efficiently. Allocate a sufficiently 15157ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // aligned object on the stack, store each element into it, then load 15167ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // the result as a vector. 15177ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Create the stack frame object. 1518e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1519e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(0).getValueType(); 15207ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15217ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue FIPtr = DAG.CreateStackTemporary(VT); 1522ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int FI = cast<FrameIndexSDNode>(FIPtr.getNode())->getIndex(); 1523ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng const Value *SV = PseudoSourceValue::getFixedStack(FI); 15247ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15257ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Emit a store of each element to the stack slot. 15267ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SmallVector<SDValue, 8> Stores; 15277ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned TypeByteSize = OpVT.getSizeInBits() / 8; 15287ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Store (in the right endianness) the elements to memory. 15297ef3d178660b82d1571757e49f44b004d772a116Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 15307ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Ignore undef elements. 15317ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (Node->getOperand(i).getOpcode() == ISD::UNDEF) continue; 15327ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15337ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Offset = TypeByteSize*i; 15347ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15357ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Idx = DAG.getConstant(Offset, FIPtr.getValueType()); 15367ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Idx = DAG.getNode(ISD::ADD, dl, FIPtr.getValueType(), FIPtr, Idx); 15377ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15387ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Stores.push_back(DAG.getStore(DAG.getEntryNode(), dl, Node->getOperand(i), 15397ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Idx, SV, Offset)); 15407ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 15417ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15427ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue StoreChain; 15437ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (!Stores.empty()) // Not all undef elements? 1544825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson StoreChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 15457ef3d178660b82d1571757e49f44b004d772a116Eli Friedman &Stores[0], Stores.size()); 15467ef3d178660b82d1571757e49f44b004d772a116Eli Friedman else 15477ef3d178660b82d1571757e49f44b004d772a116Eli Friedman StoreChain = DAG.getEntryNode(); 15487ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15497ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Result is a load from the stack slot. 15507ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getLoad(VT, dl, StoreChain, FIPtr, SV, 0); 15517ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 15527ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15534bc8c718218159fe410462f6e3670e7cb76c0c04Eli FriedmanSDValue SelectionDAGLegalize::ExpandFCOPYSIGN(SDNode* Node) { 15544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = Node->getOperand(0); 15564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = Node->getOperand(1); 1557825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson assert((Tmp2.getValueType() == MVT::f32 || 1558825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp2.getValueType() == MVT::f64) && 15594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman "Ugly special-cased code!"); 15604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Get the sign bit of the RHS. 15614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignBit; 1562825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson EVT IVT = Tmp2.getValueType() == MVT::f64 ? MVT::i64 : MVT::i32; 15634bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (isTypeLegal(IVT)) { 15644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = DAG.getNode(ISD::BIT_CONVERT, dl, IVT, Tmp2); 15654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else { 15664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert(isTypeLegal(TLI.getPointerTy()) && 1567825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson (TLI.getPointerTy() == MVT::i32 || 1568825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson TLI.getPointerTy() == MVT::i64) && 15694bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman "Legal type for load?!"); 15704bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue StackPtr = DAG.CreateStackTemporary(Tmp2.getValueType()); 15714bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue StorePtr = StackPtr, LoadPtr = StackPtr; 15724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Ch = 15734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getStore(DAG.getEntryNode(), dl, Tmp2, StorePtr, NULL, 0); 1574825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Tmp2.getValueType() == MVT::f64 && TLI.isLittleEndian()) 15754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LoadPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), 15764bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LoadPtr, DAG.getIntPtrConstant(4)); 15774bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = DAG.getExtLoad(ISD::SEXTLOAD, dl, TLI.getPointerTy(), 1578825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Ch, LoadPtr, NULL, 0, MVT::i32); 15794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 15804bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = 15814bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getSetCC(dl, TLI.getSetCCResultType(SignBit.getValueType()), 15824bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit, DAG.getConstant(0, SignBit.getValueType()), 15834bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETLT); 15844bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Get the absolute value of the result. 15854bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue AbsVal = DAG.getNode(ISD::FABS, dl, Tmp1.getValueType(), Tmp1); 15864bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Select between the nabs and abs value based on the sign bit of 15874bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // the input. 15884bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getNode(ISD::SELECT, dl, AbsVal.getValueType(), SignBit, 15894bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getNode(ISD::FNEG, dl, AbsVal.getValueType(), AbsVal), 15904bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman AbsVal); 15914bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 15924bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 15934bc8c718218159fe410462f6e3670e7cb76c0c04Eli FriedmanSDValue SelectionDAGLegalize::ExpandDBG_STOPPOINT(SDNode* Node) { 15944bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15954bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DwarfWriter *DW = DAG.getDwarfWriter(); 15964bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman bool useDEBUG_LOC = TLI.isOperationLegalOrCustom(ISD::DEBUG_LOC, 1597825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::Other); 1598825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson bool useLABEL = TLI.isOperationLegalOrCustom(ISD::DBG_LABEL, MVT::Other); 15994bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16004bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman const DbgStopPointSDNode *DSP = cast<DbgStopPointSDNode>(Node); 1601e4b275610a7a05b7ee4c0378a906a6330e4c4ab0Devang Patel MDNode *CU_Node = DSP->getCompileUnit(); 1602e4b275610a7a05b7ee4c0378a906a6330e4c4ab0Devang Patel if (DW && (useDEBUG_LOC || useLABEL)) { 16034bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16044bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Line = DSP->getLine(); 16054bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Col = DSP->getColumn(); 16064bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16074bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (OptLevel == CodeGenOpt::None) { 16084bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // A bit self-referential to have DebugLoc on Debug_Loc nodes, but it 16094bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // won't hurt anything. 16104bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (useDEBUG_LOC) { 1611825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson return DAG.getNode(ISD::DEBUG_LOC, dl, MVT::Other, Node->getOperand(0), 1612825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson DAG.getConstant(Line, MVT::i32), 1613825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson DAG.getConstant(Col, MVT::i32), 16143d910835fc5da1ccddefd7cc5978ffe8c903cbf0Devang Patel DAG.getSrcValue(CU_Node)); 16154bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else { 16163d910835fc5da1ccddefd7cc5978ffe8c903cbf0Devang Patel unsigned ID = DW->RecordSourceLine(Line, Col, CU_Node); 16174bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getLabel(ISD::DBG_LABEL, dl, Node->getOperand(0), ID); 16184bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16194bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16204bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return Node->getOperand(0); 16224bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16234bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedmanvoid SelectionDAGLegalize::ExpandDYNAMIC_STACKALLOC(SDNode* Node, 16254bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results) { 16264bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned SPReg = TLI.getStackPointerRegisterToSaveRestore(); 16274bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert(SPReg && "Target cannot require DYNAMIC_STACKALLOC expansion and" 16284bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman " not tell us which reg is the stack pointer!"); 16294bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 1630e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 16314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = SDValue(Node, 0); 16324bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = SDValue(Node, 1); 16334bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp3 = Node->getOperand(2); 16344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Tmp1.getOperand(0); 16354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Chain the dynamic stack allocation so that it doesn't modify the stack 16374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // pointer when other instructions are using the stack. 16384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(0, true)); 16394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Size = Tmp2.getOperand(1); 16414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SP = DAG.getCopyFromReg(Chain, dl, SPReg, VT); 16424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = SP.getValue(1); 16434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Align = cast<ConstantSDNode>(Tmp3)->getZExtValue(); 16444bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned StackAlign = 16454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getTargetMachine().getFrameInfo()->getStackAlignment(); 16464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Align > StackAlign) 16474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SP = DAG.getNode(ISD::AND, dl, VT, SP, 16484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getConstant(-(uint64_t)Align, VT)); 16494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, SP, Size); // Value 16504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCopyToReg(Chain, dl, SPReg, Tmp1); // Output chain 16514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp2 = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(0, true), 16534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getIntPtrConstant(0, true), SDValue()); 16544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 16564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp2); 16574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16597f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// LegalizeSetCCCondCode - Legalize a SETCC with given LHS and RHS and 1660f77fc92b03efe455008474894d217282e2a03cadDan Gohman/// condition code CC on the current target. This routine expands SETCC with 16617f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// illegal condition code into AND / OR of multiple SETCC values. 1662e50ed30282bb5b4a9ed952580523f2dda16215acOwen Andersonvoid SelectionDAGLegalize::LegalizeSetCCCondCode(EVT VT, 16637f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng SDValue &LHS, SDValue &RHS, 1664bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue &CC, 1665bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl) { 1666e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = LHS.getValueType(); 16677f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CCCode = cast<CondCodeSDNode>(CC)->get(); 16687f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (TLI.getCondCodeAction(CCCode, OpVT)) { 1669c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown condition code action!"); 16707f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Legal: 16717f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // Nothing to do. 16727f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 16737f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Expand: { 16747f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CC1 = ISD::SETCC_INVALID, CC2 = ISD::SETCC_INVALID; 16757f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng unsigned Opc = 0; 16767f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (CCCode) { 1677c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Don't know how to expand this condition!"); 1678e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETO; Opc = ISD::AND; break; 1679e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGT: CC1 = ISD::SETGT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1680e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGE: CC1 = ISD::SETGE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1681e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLT: CC1 = ISD::SETLT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1682e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLE: CC1 = ISD::SETLE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1683e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETONE: CC1 = ISD::SETNE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1684e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1685e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGT: CC1 = ISD::SETGT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1686e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGE: CC1 = ISD::SETGE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1687e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULT: CC1 = ISD::SETLT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1688e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULE: CC1 = ISD::SETLE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1689e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUNE: CC1 = ISD::SETNE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 16907f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // FIXME: Implement more expansions. 16917f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 16927f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 1693bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC1 = DAG.getSetCC(dl, VT, LHS, RHS, CC1); 1694bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC2 = DAG.getSetCC(dl, VT, LHS, RHS, CC2); 1695bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen LHS = DAG.getNode(Opc, dl, VT, SetCC1, SetCC2); 16967f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng RHS = SDValue(); 16977f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng CC = SDValue(); 16987f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 16997f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17007f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17017f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng} 17027f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 17031401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// EmitStackConvert - Emit a store/load combination to the stack. This stores 17041401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// SrcOp to a stack slot of type SlotVT, truncating it if needed. It then does 17051401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// a load from the stack slot to DestVT, extending it if needed. 17061401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// The resultant code need not be legal. 1707475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::EmitStackConvert(SDValue SrcOp, 1708e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SlotVT, 1709e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 17108a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 171135481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Create the stack frame object. 1712ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson unsigned SrcAlign = 1713ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getTargetData()->getPrefTypeAlignment(SrcOp.getValueType(). 171423b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson getTypeForEVT(*DAG.getContext())); 1715475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FIPtr = DAG.CreateStackTemporary(SlotVT, SrcAlign); 1716fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1717ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(FIPtr); 1718ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = StackPtrFI->getIndex(); 1719ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng const Value *SV = PseudoSourceValue::getFixedStack(SPFI); 1720ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 172183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SrcSize = SrcOp.getValueType().getSizeInBits(); 172283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SlotSize = SlotVT.getSizeInBits(); 172383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned DestSize = DestVT.getSizeInBits(); 1724ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson unsigned DestAlign = 1725ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng TLI.getTargetData()->getPrefTypeAlignment(DestVT.getTypeForEVT(*DAG.getContext())); 1726fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17271401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // Emit a store to the stack slot. Use a truncstore if the input value is 17281401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // later than DestVT. 1729475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store; 1730ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 17311401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SrcSize > SlotSize) 17328a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getTruncStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 173315b3830bcda4f9958abf1c65e6e1c64c5cbb484dDan Gohman SV, 0, SlotVT, false, SrcAlign); 17341401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner else { 17351401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SrcSize == SlotSize && "Invalid store"); 17368a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 173715b3830bcda4f9958abf1c65e6e1c64c5cbb484dDan Gohman SV, 0, false, SrcAlign); 17381401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner } 1739fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 174035481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Result is a load from the stack slot. 17411401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SlotSize == DestSize) 17428a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(DestVT, dl, Store, FIPtr, SV, 0, false, DestAlign); 1743fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17441401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SlotSize < DestSize && "Unknown extension!"); 17458a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, Store, FIPtr, SV, 0, SlotVT, 1746364d73ddab43b699ab90240f11b7a2eb5cf69bd8Mon P Wang false, DestAlign); 174735481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner} 174835481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner 1749475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandSCALAR_TO_VECTOR(SDNode *Node) { 17508a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl = Node->getDebugLoc(); 17514352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // Create a vector sized/aligned stack slot, store the value to element #0, 17524352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // then load the whole vector back out. 1753475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(Node->getValueType(0)); 175469de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 1755ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(StackPtr); 1756ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng int SPFI = StackPtrFI->getIndex(); 1757ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng 1758b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands SDValue Ch = DAG.getTruncStore(DAG.getEntryNode(), dl, Node->getOperand(0), 1759b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands StackPtr, 1760ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng PseudoSourceValue::getFixedStack(SPFI), 0, 1761b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands Node->getValueType(0).getVectorElementType()); 17628a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(Node->getValueType(0), dl, Ch, StackPtr, 1763ff89dcb06fbd103373436e2d0ae85f252fae2254Evan Cheng PseudoSourceValue::getFixedStack(SPFI), 0); 17644352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 17654352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 17664352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 1767ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner/// ExpandBUILD_VECTOR - Expand a BUILD_VECTOR node on targets that don't 176807a96765daedf180a7102d39fe56c499878312b7Dan Gohman/// support the operation, but do support the resultant vector type. 1769475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandBUILD_VECTOR(SDNode *Node) { 177026cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson unsigned NumElems = Node->getNumOperands(); 17717a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Value1, Value2; 177226cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson DebugLoc dl = Node->getDebugLoc(); 1773e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 1774e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpVT = Node->getOperand(0).getValueType(); 1775e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 1776fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1777fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // If the only non-undef value is the low element, turn this into a 177887100e0b83b808757bf44dabecd1d1048255d1adChris Lattner // SCALAR_TO_VECTOR node. If this is { X, X, X, X }, determine X. 1779ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner bool isOnlyLowElement = true; 17807a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman bool MoreThanTwoValues = false; 17812eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner bool isConstant = true; 17827a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 1783475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue V = Node->getOperand(i); 17847a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 17857a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 17867a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (i > 0) 1787ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner isOnlyLowElement = false; 17887a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!isa<ConstantFPSDNode>(V) && !isa<ConstantSDNode>(V)) 17892eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner isConstant = false; 17907a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 17917a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) { 17927a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value1 = V; 17937a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (!Value2.getNode()) { 17947a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V != Value1) 17957a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value2 = V; 17967a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (V != Value1 && V != Value2) { 17977a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman MoreThanTwoValues = true; 17987a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 1799ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1800fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18017a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) 18027a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getUNDEF(VT); 18037a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 18047a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (isOnlyLowElement) 180526cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson return DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Node->getOperand(0)); 1806fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18072eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // If all elements are constants, create a load from the constant pool. 1808ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner if (isConstant) { 1809ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner std::vector<Constant*> CV; 1810033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng for (unsigned i = 0, e = NumElems; i != e; ++i) { 1811fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel if (ConstantFPSDNode *V = 1812ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner dyn_cast<ConstantFPSDNode>(Node->getOperand(i))) { 18134fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman CV.push_back(const_cast<ConstantFP *>(V->getConstantFPValue())); 1814fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel } else if (ConstantSDNode *V = 1815ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson dyn_cast<ConstantSDNode>(Node->getOperand(i))) { 18164fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman CV.push_back(const_cast<ConstantInt *>(V->getConstantIntValue())); 1817ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } else { 1818ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner assert(Node->getOperand(i).getOpcode() == ISD::UNDEF); 181923b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *OpNTy = OpVT.getTypeForEVT(*DAG.getContext()); 18209e9a0d5fc26878e51a58a8b57900fcbf952c2691Owen Anderson CV.push_back(UndefValue::get(OpNTy)); 1821ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1822ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1823af7ec975870f92245f1f1484ac80a1e2db6a0afaOwen Anderson Constant *CP = ConstantVector::get(CV); 1824475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(CP, TLI.getPointerTy()); 18251606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 18268a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(VT, dl, DAG.getEntryNode(), CPIdx, 182750284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, 182850284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman false, Alignment); 1829ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1830fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18317a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!MoreThanTwoValues) { 18327a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SmallVector<int, 8> ShuffleVec(NumElems, -1); 18337a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 18347a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue V = Node->getOperand(i); 18357a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 18367a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 18377a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman ShuffleVec[i] = V == Value1 ? 0 : NumElems; 18387a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 18397a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (TLI.isShuffleMaskLegal(ShuffleVec, Node->getValueType(0))) { 18402eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Get the splatted value into the low element of a vector register. 18417a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec1 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value1); 18427a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec2; 18437a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (Value2.getNode()) 18447a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value2); 18457a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman else 18467a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getUNDEF(VT); 1847fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18482eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Return shuffle(LowValVec, undef, <0,0,0,0>) 18497a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getVectorShuffle(VT, dl, Vec1, Vec2, ShuffleVec.data()); 1850033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1851033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1852fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18537ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, we can't handle this case efficiently. 18547ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return ExpandVectorBuildThroughStack(Node); 1855ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner} 1856ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner 185777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// ExpandLibCall - Expand a node into a call to a libcall. If the result value 185877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// does not fit into a register, return the lo part and set the hi part to the 185977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// by-reg argument. If it does fit into a single register, return the result 186077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// and leave the Hi part unset. 1861475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, 186247b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman bool isSigned) { 18636831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "Cannot overlap legalization of calls!"); 1864fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // The input chain to this libcall is the entry node of the function. 18656831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalizing the call will automatically add the previous call to the 18666831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // dependence. 1867475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InChain = DAG.getEntryNode(); 1868fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 186977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 187047857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer TargetLowering::ArgListEntry Entry; 187177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 1872e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ArgVT = Node->getOperand(i).getValueType(); 187323b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *ArgTy = ArgVT.getTypeForEVT(*DAG.getContext()); 1874fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Entry.Node = Node->getOperand(i); Entry.Ty = ArgTy; 1875d0b82b301d700217a716526f9329bb031e0d6578Anton Korobeynikov Entry.isSExt = isSigned; 187600fee65fd21f9615d1a604b8b7d42cd16a3f6b47Duncan Sands Entry.isZExt = !isSigned; 187747857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer Args.push_back(Entry); 187877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 1879056292fd738924f3f7703725d8f630983794b5a5Bill Wendling SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 18800c39719bfc7d0b3e61fbd55e1115184a1d5f6ae7Mon P Wang TLI.getPointerTy()); 1881edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 18820d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Splice the libcall in wherever FindInputOutputChains tells us to. 188323b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson const Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext()); 1884ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson std::pair<SDValue, SDValue> CallInfo = 188586098bd6a63d2cdf0c9be9ef3151bd2728281fd7Dale Johannesen TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false, 188672977a45a8ad9d9524c9b49399e89fb9a3a676edAnton Korobeynikov 0, TLI.getLibcallCallingConv(LC), false, 188798ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 188898ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman Callee, Args, DAG, 18897d2ad624fa749a6d3edac0d94e9c107989c16304Dale Johannesen Node->getDebugLoc()); 18900d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 18916831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call sequence, starting with the chain. This will advance 18926831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // the LastCALLSEQ_END to the legalized version of the CALLSEQ_END node that 18936831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // was added by LowerCallTo (guaranteeing proper serialization of calls). 18946831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(CallInfo.second); 189574807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman return CallInfo.first; 189622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 189722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 1898f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandFPLibCall(SDNode* Node, 1899f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F32, 1900f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, 1901f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F80, 1902f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128) { 1903f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 1904825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 1905c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unexpected request for libcall!"); 1906825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f32: LC = Call_F32; break; 1907825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f64: LC = Call_F64; break; 1908825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::f80: LC = Call_F80; break; 1909825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::ppcf128: LC = Call_PPCF128; break; 1910f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 1911f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, false); 1912f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 1913f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 1914f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandIntLibCall(SDNode* Node, bool isSigned, 19158983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::Libcall Call_I8, 1916f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I16, 1917f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I32, 1918f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I64, 1919f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128) { 1920f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 1921825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Node->getValueType(0).getSimpleVT().SimpleTy) { 1922c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unexpected request for libcall!"); 19238983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i8: LC = Call_I8; break; 19248983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i16: LC = Call_I16; break; 19258983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i32: LC = Call_I32; break; 19268983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov case MVT::i64: LC = Call_I64; break; 1927825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i128: LC = Call_I128; break; 1928f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 1929f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, isSigned); 1930f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 1931f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 193222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandLegalINT_TO_FP - This function is responsible for legalizing a 193322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// INT_TO_FP operation of the specified operand when the target requests that 193422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we expand it. At this point, we know that the result and operand types are 193522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target. 1936475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLegalINT_TO_FP(bool isSigned, 1937475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0, 1938e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 1939af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 1940825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (Op0.getValueType() == MVT::i32) { 194122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // simple 32-bit [signed|unsigned] integer to float/double expansion 1942fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 194323594d4537fb88a963c6d6993af5027eac9bfbacChris Lattner // Get the stack frame index of a 8 byte buffer. 1944825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue StackSlot = DAG.CreateStackTemporary(MVT::f64); 1945fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 194622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // word offset constant for Hi/Lo address computation 1947475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue WordOff = DAG.getConstant(sizeof(int), TLI.getPointerTy()); 194822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // set up Hi and Lo (into buffer) address based on endian 1949475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = StackSlot; 1950fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Lo = DAG.getNode(ISD::ADD, dl, 1951ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getPointerTy(), StackSlot, WordOff); 1952408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner if (TLI.isLittleEndian()) 1953408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner std::swap(Hi, Lo); 1954fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 195522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // if signed map to unsigned space 1956475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0Mapped; 195722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) { 195822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // constant used to invert sign bit (signed to unsigned mapping) 1959825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue SignBit = DAG.getConstant(0x80000000u, MVT::i32); 1960825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Op0Mapped = DAG.getNode(ISD::XOR, dl, MVT::i32, Op0, SignBit); 196122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } else { 196222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Op0Mapped = Op0; 196322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 196422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the lo of the constructed double - based on integer input 1965af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Store1 = DAG.getStore(DAG.getEntryNode(), dl, 1966ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson Op0Mapped, Lo, NULL, 0); 196722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // initial hi portion of constructed double 1968825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue InitialHi = DAG.getConstant(0x43300000u, MVT::i32); 196922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the hi of the constructed double - biased exponent 1970af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Store2=DAG.getStore(Store1, dl, InitialHi, Hi, NULL, 0); 197122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // load the constructed double 1972825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Load = DAG.getLoad(MVT::f64, dl, Store2, StackSlot, NULL, 0); 197322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // FP constant to bias correct the final result 1974475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Bias = DAG.getConstantFP(isSigned ? 1975ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000080000000ULL) : 1976ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000000000000ULL), 1977825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::f64); 197822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // subtract the bias 1979825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson SDValue Sub = DAG.getNode(ISD::FSUB, dl, MVT::f64, Load, Bias); 198022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // final result 1981475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result; 198222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // handle final rounding 1983825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (DestVT == MVT::f64) { 198422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // do nothing 198522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Result = Sub; 1986825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsLT(MVT::f64)) { 1987af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_ROUND, dl, DestVT, Sub, 19880bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(0)); 1989825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson } else if (DestVT.bitsGT(MVT::f64)) { 1990af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, DestVT, Sub); 199122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 199222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Result; 199322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 199422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner assert(!isSigned && "Legalize cannot Expand SINT_TO_FP for i64 yet"); 1995af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Tmp1 = DAG.getNode(ISD::SINT_TO_FP, dl, DestVT, Op0); 199622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 1997af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue SignSet = DAG.getSetCC(dl, TLI.getSetCCResultType(Op0.getValueType()), 19985480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands Op0, DAG.getConstant(0, Op0.getValueType()), 19995480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands ISD::SETLT); 2000475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Zero = DAG.getIntPtrConstant(0), Four = DAG.getIntPtrConstant(4); 2001af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue CstOffset = DAG.getNode(ISD::SELECT, dl, Zero.getValueType(), 200222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner SignSet, Four, Zero); 200322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 200422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the sign bit of the integer is set, the large number will be treated 200522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // as a negative number. To counteract this, the dynamic code adds an 200622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // offset depending on the data type. 200722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner uint64_t FF; 2008825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (Op0.getValueType().getSimpleVT().SimpleTy) { 2009c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unsupported integer type!"); 2010825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i8 : FF = 0x43800000ULL; break; // 2^8 (as a float) 2011825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i16: FF = 0x47800000ULL; break; // 2^16 (as a float) 2012825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i32: FF = 0x4F800000ULL; break; // 2^32 (as a float) 2013825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i64: FF = 0x5F800000ULL; break; // 2^64 (as a float) 201422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 201522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (TLI.isLittleEndian()) FF <<= 32; 20161d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson Constant *FudgeFactor = ConstantInt::get( 20171d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson Type::getInt64Ty(*DAG.getContext()), FF); 201822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2019475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(FudgeFactor, TLI.getPointerTy()); 20201606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 2021af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen CPIdx = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), CPIdx, CstOffset); 202287a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman Alignment = std::min(Alignment, 4u); 2023475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FudgeInReg; 2024825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson if (DestVT == MVT::f32) 2025825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson FudgeInReg = DAG.getLoad(MVT::f32, dl, DAG.getEntryNode(), CPIdx, 202650284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, 202750284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman false, Alignment); 202822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner else { 202969de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman FudgeInReg = 2030af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen LegalizeOp(DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, 203169de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman DAG.getEntryNode(), CPIdx, 20323069b8743769527ce7af6cfb6591a2f0fc2faee4Dan Gohman PseudoSourceValue::getConstantPool(), 0, 2033825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson MVT::f32, false, Alignment)); 203422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 203522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2036af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(ISD::FADD, dl, DestVT, Tmp1, FudgeInReg); 203722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 203822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 203922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalINT_TO_FP - This function is responsible for legalizing a 204022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// *INT_TO_FP operation of the specified operand when the target requests that 204122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 204222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal UINT_TO_FP or SINT_TO_FP 204322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that takes a larger input. 2044475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalINT_TO_FP(SDValue LegalOp, 2045e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2046af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2047af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 204822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate *INT_TO_FP operation to use. 2049e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewInTy = LegalOp.getValueType(); 205022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 205122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 205222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 205322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 205422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2055825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewInTy = (MVT::SimpleValueType)(NewInTy.getSimpleVT().SimpleTy+1); 205683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewInTy.isInteger() && "Ran out of possibilities!"); 205722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 205822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports SINT_TO_FP of this type, use it. 20593be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::SINT_TO_FP, NewInTy)) { 20603be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::SINT_TO_FP; 20613be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 206222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 206322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) continue; 206422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 206522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports UINT_TO_FP of this type, use it. 20663be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::UINT_TO_FP, NewInTy)) { 20673be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::UINT_TO_FP; 20683be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 206922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 207022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 207122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 207222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 207322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 207422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Okay, we found the operation and type to use. Zero extend our input to the 207522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // desired type then run the operation on it. 2076af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(OpToUse, dl, DestVT, 207722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, 2078af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen dl, NewInTy, LegalOp)); 207977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 208077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 208122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalFP_TO_INT - This function is responsible for legalizing a 208222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// FP_TO_*INT operation of the specified operand when the target requests that 208322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 208422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal FP_TO_UINT or FP_TO_SINT 208522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that returns a larger result. 2086475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalFP_TO_INT(SDValue LegalOp, 2087e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT DestVT, 2088af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2089af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 209022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate FP_TO*INT operation to use. 2091e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NewOutTy = DestVT; 20929c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 209322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 2094e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 209522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 209622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 2097825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson NewOutTy = (MVT::SimpleValueType)(NewOutTy.getSimpleVT().SimpleTy+1); 209883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewOutTy.isInteger() && "Ran out of possibilities!"); 209966de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner 21003be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_SINT, NewOutTy)) { 210122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_SINT; 210222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 210322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 2104e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 21053be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_UINT, NewOutTy)) { 210622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_UINT; 210722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 2108e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner } 21090d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 211022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 2111a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner } 2112a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner 2113fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 211427a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Okay, we found the operation and type to use. 2115af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Operation = DAG.getNode(OpToUse, dl, NewOutTy, LegalOp); 2116126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 211727a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Truncate the result of the extended FP_TO_*INT operation to the desired 211827a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // size. 2119af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(ISD::TRUNCATE, dl, DestVT, Operation); 212022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 212113689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner 212222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBSWAP - Open code the operations for BSWAP of the specified operation. 212322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 21248a782a2a8c2f0c82f292d03a3f707232b0bae27bDale JohannesenSDValue SelectionDAGLegalize::ExpandBSWAP(SDValue Op, DebugLoc dl) { 2125e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2126e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT SHVT = TLI.getShiftAmountTy(); 2127475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4, Tmp5, Tmp6, Tmp7, Tmp8; 2128825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson switch (VT.getSimpleVT().SimpleTy) { 2129c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unhandled Expand type in BSWAP!"); 2130825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i16: 21318a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21328a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21338a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp1, Tmp2); 2134825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i32: 21358a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21368a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21378a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21388a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21398a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(0xFF0000, VT)); 21408a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(0xFF00, VT)); 21418a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 21428a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 21438a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 2144825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson case MVT::i64: 21458a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(56, SHVT)); 21468a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(40, SHVT)); 21478a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21488a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21498a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21508a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21518a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(40, SHVT)); 21528a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(56, SHVT)); 21538a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::AND, dl, VT, Tmp7, DAG.getConstant(255ULL<<48, VT)); 21548a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::AND, dl, VT, Tmp6, DAG.getConstant(255ULL<<40, VT)); 21558a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::AND, dl, VT, Tmp5, DAG.getConstant(255ULL<<32, VT)); 21568a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::AND, dl, VT, Tmp4, DAG.getConstant(255ULL<<24, VT)); 21578a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(255ULL<<16, VT)); 21588a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(255ULL<<8 , VT)); 21598a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp7); 21608a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::OR, dl, VT, Tmp6, Tmp5); 21618a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 21628a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 21638a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp6); 21648a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 21658a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp4); 21660d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner } 216777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 2168edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 216922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBitCount - Expand the specified bitcount instruction into operations. 217022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 2171fdc40a0a696c658d550d894ea03772e5f8af2c94Scott MichelSDValue SelectionDAGLegalize::ExpandBitCount(unsigned Opc, SDValue Op, 21728a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 217322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner switch (Opc) { 2174c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Cannot expand this yet!"); 217522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTPOP: { 217622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner static const uint64_t mask[6] = { 217722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x5555555555555555ULL, 0x3333333333333333ULL, 217822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x0F0F0F0F0F0F0F0FULL, 0x00FF00FF00FF00FFULL, 217922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x0000FFFF0000FFFFULL, 0x00000000FFFFFFFFULL 218022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner }; 2181e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2182e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ShVT = TLI.getShiftAmountTy(); 218383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 218422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 218522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner //x = (x & mask[i][len/8]) + (x >> (1 << i) & mask[i][len/8]) 2186b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands unsigned EltSize = VT.isVector() ? 2187b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands VT.getVectorElementType().getSizeInBits() : len; 2188b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands SDValue Tmp2 = DAG.getConstant(APInt(EltSize, mask[i]), VT); 2189475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2190fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::ADD, dl, VT, 2191e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::AND, dl, VT, Op, Tmp2), 21928a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::AND, dl, VT, 21938a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3), 21948a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2)); 219522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 219622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Op; 219722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 219822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTLZ: { 219922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we do this: 220022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 1); 220122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 2); 220222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // ... 220322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>16); 220422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>32); // for 64-bit input 220522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // return popcount(~x); 220622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // 220722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // but see also: http://www.hackersdelight.org/HDcode/nlz.cc 2208e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 2209e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ShVT = TLI.getShiftAmountTy(); 221083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 221122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 2212475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2213fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::OR, dl, VT, Op, 2214e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3)); 221522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 22168a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Op = DAG.getNOT(dl, Op, VT); 22178a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Op); 221822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 221922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTTZ: { 222022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we use: { return popcount(~x & (x - 1)); } 222122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // unless the target has ctlz but not ctpop, in which case we use: 222222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // { return 32 - nlz(~x & (x-1)); } 222322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // see also http://www.hackersdelight.org/HDcode/ntz.cc 2224e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Op.getValueType(); 22258a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue Tmp3 = DAG.getNode(ISD::AND, dl, VT, 22268a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNOT(dl, Op, VT), 22278a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SUB, dl, VT, Op, 22287581bfa2757a3149c6d17c0fe592e5c3808aa843Bill Wendling DAG.getConstant(1, VT))); 222922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If ISD::CTLZ is legal and CTPOP isn't, then do that instead. 2230f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman if (!TLI.isOperationLegalOrCustom(ISD::CTPOP, VT) && 2231f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.isOperationLegalOrCustom(ISD::CTLZ, VT)) 22328a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::SUB, dl, VT, 223383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(VT.getSizeInBits(), VT), 22348a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::CTLZ, dl, VT, Tmp3)); 22358a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Tmp3); 223622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 223722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 223822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 2239e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 22408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::ExpandNode(SDNode *Node, 22418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 22428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 2243bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 22448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 22458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 22468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 22478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 22488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandBitCount(Node->getOpcode(), Node->getOperand(0), dl); 22498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 22508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: 22528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(ExpandBSWAP(Node->getOperand(0), dl)); 22538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 22558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 22568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 22578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, Node->getValueType(0))); 22588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 22608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(1, Node->getValueType(0))); 22618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 22638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::DBG_LABEL: 22648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_LABEL: 22658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::PREFETCH: 22668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MEMBARRIER: 22678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAEND: 22688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(0)); 22698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22704bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::DBG_STOPPOINT: 22714bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(ExpandDBG_STOPPOINT(Node)); 22724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 22734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::DYNAMIC_STACKALLOC: 22744bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ExpandDYNAMIC_STACKALLOC(Node, Results); 22754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 22768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 22778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0; i < Node->getNumValues(); i++) 22788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(i)); 22798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UNDEF: { 2281e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 22828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (VT.isInteger()) 22838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, VT)); 22848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else if (VT.isFloatingPoint()) 22858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstantFP(0, VT)); 22868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 2287c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Unknown value type!"); 22888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 22908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAP: { 22918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // If this operation is not supported, lower it to 'abort()' call 22928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::ArgListTy Args; 22938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman std::pair<SDValue, SDValue> CallResult = 22941d0be15f89cb5056e20e2d24faa8d6afb1573bcaOwen Anderson TLI.LowerCallTo(Node->getOperand(0), Type::getVoidTy(*DAG.getContext()), 22956b61cd185eeb90bec93f042535594132ae1f0f41Tilmann Scheller false, false, false, false, 0, CallingConv::C, false, 229698ca4f2a325f72374a477f9deba7d09e8999c29bDan Gohman /*isReturnValueUsed=*/true, 22978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getExternalSymbol("abort", TLI.getPointerTy()), 22988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Args, DAG, dl); 22998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(CallResult.second); 23008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND: 23038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BIT_CONVERT: 23048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), Node->getValueType(0), 23058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 23068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_EXTEND: 23098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), 23108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType(), 23118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 23128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 23158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: we could fall back on load/store here too for targets without 23168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // SAR. However, it is doubtful that any exist. 2317e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 23188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman unsigned BitsDiff = Node->getValueType(0).getSizeInBits() - 23198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ExtraVT.getSizeInBits(); 23208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SDValue ShiftCst = DAG.getConstant(BitsDiff, TLI.getShiftAmountTy()); 23218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SHL, dl, Node->getValueType(0), 23228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), ShiftCst); 23238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRA, dl, Node->getValueType(0), Tmp1, ShiftCst); 23248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: { 23288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // The only way we can lower this is to turn it into a TRUNCSTORE, 23298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // EXTLOAD pair, targetting a temporary location (a stack slot). 23308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 23318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: there is a choice here between constantly creating new stack 23328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // slots and always reusing the same one. We currently always create 23338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // new ones, as reuse may inhibit scheduling. 2334e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 23358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), ExtraVT, 23368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 23378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 23418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 23428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandLegalINT_TO_FP(Node->getOpcode() == ISD::SINT_TO_FP, 23438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), Node->getValueType(0), dl); 23448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: { 23478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SDValue True, False; 2348e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getOperand(0).getValueType(); 2349e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = Node->getValueType(0); 23508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const uint64_t zero[] = {0, 0}; 23518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APFloat apf = APFloat(APInt(VT.getSizeInBits(), 2, zero)); 23528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APInt x = APInt::getSignBit(NVT.getSizeInBits()); 23538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman (void)apf.convertFromAPInt(x, false, APFloat::rmNearestTiesToEven); 23548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getConstantFP(apf, VT); 23558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), 23568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), 23578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, ISD::SETLT); 23588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman True = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, Node->getOperand(0)); 23598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman False = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, 23608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getNode(ISD::FSUB, dl, VT, 23618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), Tmp1)); 23628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman False = DAG.getNode(ISD::XOR, dl, NVT, False, 23638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(x, NVT)); 23648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, True, False); 23658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 2368509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VAARG: { 2369509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman const Value *V = cast<SrcValueSDNode>(Node->getOperand(2))->getValue(); 2370e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2371509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2372509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 2373509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SDValue VAList = DAG.getLoad(TLI.getPointerTy(), dl, Tmp1, Tmp2, V, 0); 2374509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Increment the pointer, VAList, to the next vaarg 2375509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList, 2376509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(TLI.getTargetData()-> 237723b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson getTypeAllocSize(VT.getTypeForEVT(*DAG.getContext())), 2378509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TLI.getPointerTy())); 2379509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Store the incremented VAList to the legalized pointer 2380509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getStore(VAList.getValue(1), dl, Tmp3, Tmp2, V, 0); 2381509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Load the actual argument out of the pointer VAList 2382509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(DAG.getLoad(VT, dl, Tmp3, VAList, NULL, 0)); 2383509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Results[0].getValue(1)); 2384509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2385509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 23868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VACOPY: { 23878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This defaults to loading a pointer from the input and storing it to the 23888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // output, returning the chain. 23898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VD = cast<SrcValueSDNode>(Node->getOperand(3))->getValue(); 23908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VS = cast<SrcValueSDNode>(Node->getOperand(4))->getValue(); 23918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getLoad(TLI.getPointerTy(), dl, Node->getOperand(0), 23928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(2), VS, 0); 23938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getStore(Tmp1.getValue(1), dl, Tmp1, Node->getOperand(1), VD, 0); 23948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 23988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOperand(0).getValueType().getVectorNumElements() == 1) 23998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This must be an access of the only element. Return it. 24008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, Node->getValueType(0), 24018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 24028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 24038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandExtractFromVectorThroughStack(SDValue(Node, 0)); 24048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 24058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_SUBVECTOR: 24078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(ExpandExtractFromVectorThroughStack(SDValue(Node, 0))); 24088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 2409509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::CONCAT_VECTORS: { 24105257106c4d396b5d932f7b282c3ba255c4605195Eli Friedman Results.push_back(ExpandVectorBuildThroughStack(Node)); 2411509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2412509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 24138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SCALAR_TO_VECTOR: 24148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(ExpandSCALAR_TO_VECTOR(Node)); 24158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24163f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INSERT_VECTOR_ELT: 24173f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(ExpandINSERT_VECTOR_ELT(Node->getOperand(0), 24183f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getOperand(1), 24193f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getOperand(2), dl)); 24203f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 2421509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 2422509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 2423509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 2424509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 2425e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2426e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT EltVT = VT.getVectorElementType(); 2427509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned NumElems = VT.getVectorNumElements(); 2428509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<SDValue, 8> Ops; 2429509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman for (unsigned i = 0; i != NumElems; ++i) { 2430509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Mask[i] < 0) { 2431509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getUNDEF(EltVT)); 2432509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman continue; 2433509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2434509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned Idx = Mask[i]; 2435509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Idx < NumElems) 2436509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2437509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Node->getOperand(0), 2438509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(Idx))); 2439509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 2440509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2441509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Node->getOperand(1), 2442509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(Idx - NumElems))); 2443509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2444509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &Ops[0], Ops.size()); 2445509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 2446509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2447509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 24488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: { 2449e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OpTy = Node->getOperand(0).getValueType(); 24508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (cast<ConstantSDNode>(Node->getOperand(1))->getZExtValue()) { 24518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 1 -> Hi 24528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRL, dl, OpTy, Node->getOperand(0), 24538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OpTy.getSizeInBits()/2, 24548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TLI.getShiftAmountTy())); 24558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), Tmp1); 24568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 24578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 0 -> Lo 24588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), 24598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 24608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 24628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24643f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKSAVE: 24653f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // Expand to CopyFromReg if the target set 24663f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // StackPointerRegisterToSaveRestore. 24673f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 24683f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, SP, 24693f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getValueType(0))); 24703f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Results[0].getValue(1)); 24713f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } else { 24723f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(DAG.getUNDEF(Node->getValueType(0))); 24733f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Node->getOperand(0)); 24743f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 24753f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 24763f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKRESTORE: 24773f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // Expand to CopyToReg if the target set 24783f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // StackPointerRegisterToSaveRestore. 24793f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 24803f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(DAG.getCopyToReg(Node->getOperand(0), dl, SP, 24813f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getOperand(1))); 24823f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } else { 24833f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Node->getOperand(0)); 24843f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 24853f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 24864bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::FCOPYSIGN: 24874bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(ExpandFCOPYSIGN(Node)); 24884bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 2489f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEG: 2490f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FNEG(X) -> Y = SUB -0.0, X 2491f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getConstantFP(-0.0, Node->getValueType(0)); 2492f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(ISD::FSUB, dl, Node->getValueType(0), Tmp1, 2493f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Node->getOperand(0)); 2494f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2495f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2496f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FABS: { 2497f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FABS(X) -> Y = (X >u 0.0) ? X : fneg(X). 2498e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2499f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = Node->getOperand(0); 2500f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp2 = DAG.getConstantFP(0.0, VT); 2501f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(Tmp1.getValueType()), 2502f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1, Tmp2, ISD::SETUGT); 2503f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp3 = DAG.getNode(ISD::FNEG, dl, VT, Tmp1); 2504f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, VT, Tmp2, Tmp1, Tmp3); 2505f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2506f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2507f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 2508f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSQRT: 2509f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::SQRT_F32, RTLIB::SQRT_F64, 2510f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::SQRT_F80, RTLIB::SQRT_PPCF128)); 2511f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2512f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSIN: 2513f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::SIN_F32, RTLIB::SIN_F64, 2514f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::SIN_F80, RTLIB::SIN_PPCF128)); 2515f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2516f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCOS: 2517f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::COS_F32, RTLIB::COS_F64, 2518f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::COS_F80, RTLIB::COS_PPCF128)); 2519f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2520f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG: 2521f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG_F32, RTLIB::LOG_F64, 2522f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::LOG_F80, RTLIB::LOG_PPCF128)); 2523f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2524f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG2: 2525f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG2_F32, RTLIB::LOG2_F64, 2526f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::LOG2_F80, RTLIB::LOG2_PPCF128)); 2527f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2528f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG10: 2529f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG10_F32, RTLIB::LOG10_F64, 2530f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::LOG10_F80, RTLIB::LOG10_PPCF128)); 2531f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2532f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP: 2533f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP_F32, RTLIB::EXP_F64, 2534f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::EXP_F80, RTLIB::EXP_PPCF128)); 2535f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2536f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP2: 2537f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP2_F32, RTLIB::EXP2_F64, 2538f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::EXP2_F80, RTLIB::EXP2_PPCF128)); 2539f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2540f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FTRUNC: 2541f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::TRUNC_F32, RTLIB::TRUNC_F64, 2542f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::TRUNC_F80, RTLIB::TRUNC_PPCF128)); 2543f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2544f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FFLOOR: 2545f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::FLOOR_F32, RTLIB::FLOOR_F64, 2546f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::FLOOR_F80, RTLIB::FLOOR_PPCF128)); 2547f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2548f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCEIL: 2549f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::CEIL_F32, RTLIB::CEIL_F64, 2550f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::CEIL_F80, RTLIB::CEIL_PPCF128)); 2551f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2552f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FRINT: 2553f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::RINT_F32, RTLIB::RINT_F64, 2554f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::RINT_F80, RTLIB::RINT_PPCF128)); 2555f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2556f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEARBYINT: 2557f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::NEARBYINT_F32, 2558f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::NEARBYINT_F64, 2559f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::NEARBYINT_F80, 2560f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::NEARBYINT_PPCF128)); 2561f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2562f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOWI: 2563f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::POWI_F32, RTLIB::POWI_F64, 2564f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::POWI_F80, RTLIB::POWI_PPCF128)); 2565f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2566f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOW: 2567f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::POW_F32, RTLIB::POW_F64, 2568f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::POW_F80, RTLIB::POW_PPCF128)); 2569f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2570f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FDIV: 2571f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::DIV_F32, RTLIB::DIV_F64, 2572f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::DIV_F80, RTLIB::DIV_PPCF128)); 2573f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2574f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FREM: 2575f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::REM_F32, RTLIB::REM_F64, 2576f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::REM_F80, RTLIB::REM_PPCF128)); 2577f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2578f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::ConstantFP: { 2579f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman ConstantFPSDNode *CFP = cast<ConstantFPSDNode>(Node); 2580f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Check to see if this FP immediate is already legal. 2581f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // If this is a legal constant, turn it into a TargetConstantFP node. 2582a1eaa3c52b75d4fe2bcd4f7c52e56c405ee91d3cEvan Cheng if (TLI.isFPImmLegal(CFP->getValueAPF(), Node->getValueType(0))) 2583f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(SDValue(Node, 0)); 2584f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 2585f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(ExpandConstantFP(CFP, true, DAG, TLI)); 2586f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2587f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 258826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EHSELECTION: { 258926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionSelectorRegister(); 259026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 259126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(DAG.getCopyFromReg(Node->getOperand(1), dl, Reg, 259226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getValueType(0))); 259326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 259426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 259526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 259626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EXCEPTIONADDR: { 259726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionAddressRegister(); 259826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 259926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, Reg, 260026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getValueType(0))); 260126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 260226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 260326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 260426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::SUB: { 2605e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 260626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ISD::ADD, VT) && 260726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman TLI.isOperationLegalOrCustom(ISD::XOR, VT) && 260826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "Don't know how to expand this subtraction!"); 260926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ISD::XOR, dl, VT, Node->getOperand(1), 261026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman DAG.getConstant(APInt::getAllOnesValue(VT.getSizeInBits()), VT)); 261126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ISD::ADD, dl, VT, Tmp2, DAG.getConstant(1, VT)); 261226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(DAG.getNode(ISD::ADD, dl, VT, Node->getOperand(0), Tmp1)); 261326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 261426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 2615f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UREM: 2616f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SREM: { 2617e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 261826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 2619f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SREM; 2620f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivOpc = isSigned ? ISD::SDIV : ISD::UDIV; 2621f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 2622f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(0); 2623f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp3 = Node->getOperand(1); 26243be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) { 26253be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Tmp2, Tmp3).getValue(1); 26263be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } else if (TLI.isOperationLegalOrCustom(DivOpc, VT)) { 2627f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // X % Y -> X-X/Y*Y 2628f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivOpc, dl, VT, Tmp2, Tmp3); 2629f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, VT, Tmp1, Tmp3); 2630f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, Tmp2, Tmp1); 2631f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else if (isSigned) { 26328983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, true, 26338983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SREM_I8, 26348983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SREM_I16, RTLIB::SREM_I32, 2635f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::SREM_I64, RTLIB::SREM_I128); 2636f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else { 26378983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, false, 26388983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UREM_I8, 26398983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UREM_I16, RTLIB::UREM_I32, 264026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::UREM_I64, RTLIB::UREM_I128); 2641f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 264226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 264326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 264426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 2645f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UDIV: 2646f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SDIV: { 2647f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SDIV; 2648f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 2649e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 265026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 2651f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) 2652f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Node->getOperand(0), 2653f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(1)); 2654f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else if (isSigned) 26558983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, true, 26568983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SDIV_I8, 26578983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::SDIV_I16, RTLIB::SDIV_I32, 265826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::SDIV_I64, RTLIB::SDIV_I128); 2659f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 26608983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, false, 26618983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UDIV_I8, 26628983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::UDIV_I16, RTLIB::UDIV_I32, 2663f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::UDIV_I64, RTLIB::UDIV_I128); 266426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 266526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 266626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 266726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHU: 266826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHS: { 266926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned ExpandOpcode = Node->getOpcode() == ISD::MULHU ? ISD::UMUL_LOHI : 267026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman ISD::SMUL_LOHI; 2671e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 267226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 267326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ExpandOpcode, VT) && 267426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "If this wasn't legal, it shouldn't have been created!"); 267526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ExpandOpcode, dl, VTs, Node->getOperand(0), 267626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getOperand(1)); 267726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1.getValue(1)); 267826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 267926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 268026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MUL: { 2681e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 268226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 268326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // See if multiply or divide can be lowered using two-result operations. 268426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // We just need the low half of the multiply; try both the signed 268526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // and unsigned forms. If the target supports both SMUL_LOHI and 268626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // UMUL_LOHI, form a preference by checking which forms of plain 268726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // MULH it supports. 268826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasSMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::SMUL_LOHI, VT); 268926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasUMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::UMUL_LOHI, VT); 269026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHS = TLI.isOperationLegalOrCustom(ISD::MULHS, VT); 269126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHU = TLI.isOperationLegalOrCustom(ISD::MULHU, VT); 269226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned OpToUse = 0; 269326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (HasSMUL_LOHI && !HasMULHS) { 269426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 269526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI && !HasMULHU) { 269626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 269726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasSMUL_LOHI) { 269826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 269926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI) { 270026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 270126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 270226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (OpToUse) { 2703f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(DAG.getNode(OpToUse, dl, VTs, Node->getOperand(0), 2704f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(1))); 270526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 270626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 27078983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov Tmp1 = ExpandIntLibCall(Node, false, 27088983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::MUL_I8, 27098983da729aa1ca99a11a3b98ae6280dfcdbadb39Anton Korobeynikov RTLIB::MUL_I16, RTLIB::MUL_I32, 271026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::MUL_I64, RTLIB::MUL_I128); 271126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 271226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 271326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 27144bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SADDO: 27154bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SSUBO: { 27164bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 27174bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 27184bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::SADDO ? 27194bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 27204bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 27214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 2722e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OType = Node->getValueType(1); 27234bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Zero = DAG.getConstant(0, LHS.getValueType()); 27254bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27264bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // LHSSign -> LHS >= 0 27274bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RHSSign -> RHS >= 0 27284bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // SumSign -> Sum >= 0 27294bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 27304bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Add: 27314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign == RHSSign) && (LHSSign != SumSign) 27324bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Sub: 27334bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign != RHSSign) && (LHSSign != SumSign) 27344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 27354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHSSign = DAG.getSetCC(dl, OType, LHS, Zero, ISD::SETGE); 27364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHSSign = DAG.getSetCC(dl, OType, RHS, Zero, ISD::SETGE); 27374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignsMatch = DAG.getSetCC(dl, OType, LHSSign, RHSSign, 27384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Node->getOpcode() == ISD::SADDO ? 27394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETEQ : ISD::SETNE); 27404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSign = DAG.getSetCC(dl, OType, Sum, Zero, ISD::SETGE); 27424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSignNE = DAG.getSetCC(dl, OType, LHSSign, SumSign, ISD::SETNE); 27434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27444bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Cmp = DAG.getNode(ISD::AND, dl, OType, SignsMatch, SumSignNE); 27454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Cmp); 27464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 27474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 27484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::UADDO: 27494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::USUBO: { 27504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 27514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 27524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::UADDO ? 27534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 27544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 27554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 27564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(DAG.getSetCC(dl, Node->getValueType(1), Sum, LHS, 27574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Node->getOpcode () == ISD::UADDO ? 27584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETULT : ISD::SETUGT)); 27594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 27604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2761db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::UMULO: 2762db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::SMULO: { 2763e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2764db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue LHS = Node->getOperand(0); 2765db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue RHS = Node->getOperand(1); 2766db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue BottomHalf; 2767db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue TopHalf; 2768db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman static unsigned Ops[2][3] = 2769db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { { ISD::MULHU, ISD::UMUL_LOHI, ISD::ZERO_EXTEND }, 2770db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { ISD::MULHS, ISD::SMUL_LOHI, ISD::SIGN_EXTEND }}; 2771db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman bool isSigned = Node->getOpcode() == ISD::SMULO; 2772db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (TLI.isOperationLegalOrCustom(Ops[isSigned][0], VT)) { 2773db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::MUL, dl, VT, LHS, RHS); 2774db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(Ops[isSigned][0], dl, VT, LHS, RHS); 2775db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else if (TLI.isOperationLegalOrCustom(Ops[isSigned][1], VT)) { 2776db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(Ops[isSigned][1], dl, DAG.getVTList(VT, VT), LHS, 2777db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS); 2778db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = BottomHalf.getValue(1); 277923b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson } else if (TLI.isTypeLegal(EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits() * 2))) { 278023b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT WideVT = EVT::getIntegerVT(*DAG.getContext(), VT.getSizeInBits() * 2); 2781db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman LHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, LHS); 2782db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, RHS); 2783db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, WideVT, LHS, RHS); 2784db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 2785db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(0)); 2786db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 2787db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(1)); 2788db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else { 2789db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // FIXME: We should be able to fall back to a libcall with an illegal 2790db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // type in some cases cases. 2791db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // Also, we can fall back to a division in some cases, but that's a big 2792db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // performance hit in the general case. 2793c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Don't know how to expand this operation yet!"); 2794db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2795db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (isSigned) { 2796db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getConstant(VT.getSizeInBits() - 1, TLI.getShiftAmountTy()); 2797db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::SRA, dl, VT, BottomHalf, Tmp1); 2798db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, Tmp1, 2799db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman ISD::SETNE); 2800db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else { 2801db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, 2802db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getConstant(0, VT), ISD::SETNE); 2803db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2804db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(BottomHalf); 2805db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(TopHalf); 2806db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman break; 2807db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2808f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BUILD_PAIR: { 2809e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PairTy = Node->getValueType(0); 2810f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, PairTy, Node->getOperand(0)); 2811f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = DAG.getNode(ISD::ANY_EXTEND, dl, PairTy, Node->getOperand(1)); 2812f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = DAG.getNode(ISD::SHL, dl, PairTy, Tmp2, 2813f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(PairTy.getSizeInBits()/2, 2814f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman TLI.getShiftAmountTy())); 2815f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(DAG.getNode(ISD::OR, dl, PairTy, Tmp1, Tmp2)); 2816f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2817f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2818509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::SELECT: 2819509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2820509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 2821509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = Node->getOperand(2); 2822509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Tmp1.getOpcode() == ISD::SETCC) { 2823509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1.getOperand(0), Tmp1.getOperand(1), 2824509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, 2825509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<CondCodeSDNode>(Tmp1.getOperand(2))->get()); 2826509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } else { 2827509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1, 2828509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(0, Tmp1.getValueType()), 2829509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, ISD::SETNE); 2830509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2831509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 2832509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 28334bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::BR_JT: { 28344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Node->getOperand(0); 28354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Table = Node->getOperand(1); 28364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Index = Node->getOperand(2); 28374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 2838e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT PTy = TLI.getPointerTy(); 28394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman MachineFunction &MF = DAG.getMachineFunction(); 28404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned EntrySize = MF.getJumpTableInfo()->getEntrySize(); 28414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Index= DAG.getNode(ISD::MUL, dl, PTy, 28424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Index, DAG.getConstant(EntrySize, PTy)); 28434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Addr = DAG.getNode(ISD::ADD, dl, PTy, Index, Table); 28444bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 284523b9b19b1a5a00faa9fce0788155c7dbfd00bfb1Owen Anderson EVT MemVT = EVT::getIntegerVT(*DAG.getContext(), EntrySize * 8); 28464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LD = DAG.getExtLoad(ISD::SEXTLOAD, dl, PTy, Chain, Addr, 28474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman PseudoSourceValue::getJumpTable(), 0, MemVT); 28484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = LD; 28494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (TLI.getTargetMachine().getRelocationModel() == Reloc::PIC_) { 28504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // For PIC, the sequence is: 28514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // BRIND(load(Jumptable + index) + RelocBase) 28524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RelocBase can be JumpTable, GOT or some sort of global base. 28534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = DAG.getNode(ISD::ADD, dl, PTy, Addr, 28544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getPICJumpTableRelocBase(Table, DAG)); 28554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2856825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BRIND, dl, MVT::Other, LD.getValue(1), Addr); 28574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 28584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 28594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2860f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BRCOND: 2861f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Expand brcond's setcc into its constituent parts and create a BR_CC 2862f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Node. 2863f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = Node->getOperand(0); 2864f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(1); 2865f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (Tmp2.getOpcode() == ISD::SETCC) { 2866825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, 2867f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1, Tmp2.getOperand(2), 2868f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2.getOperand(0), Tmp2.getOperand(1), 2869f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 2870f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else { 2871825b72b0571821bf2d378749f69d6c4cfb52d2f9Owen Anderson Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, Tmp1, 2872f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getCondCode(ISD::SETNE), Tmp2, 2873f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(0, Tmp2.getValueType()), 2874f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 2875f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2876f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(Tmp1); 2877f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2878ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 2879ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = Node->getOperand(0); 2880ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp2 = Node->getOperand(1); 2881ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp3 = Node->getOperand(2); 2882bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(Node->getValueType(0), Tmp1, Tmp2, Tmp3, dl); 2883ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 2884ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // If we expanded the SETCC into an AND/OR, return the new node 2885ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman if (Tmp2.getNode() == 0) { 2886ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 2887ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 2888ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 2889ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 2890ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // Otherwise, SETCC for the given comparison type must be completely 2891ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // illegal; expand it into a SELECT_CC. 2892e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT VT = Node->getValueType(0); 2893ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, VT, Tmp1, Tmp2, 2894ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman DAG.getConstant(1, VT), DAG.getConstant(0, VT), Tmp3); 2895ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 2896ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 2897ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 2898bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::SELECT_CC: { 2899bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // LHS 2900bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(1); // RHS 2901bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(2); // True 2902bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(3); // False 2903bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue CC = Node->getOperand(4); 2904bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2905bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp1.getValueType()), 2906bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1, Tmp2, CC, dl); 2907bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2908bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp2.getNode() && "Can't legalize SELECT_CC with legal condition!"); 2909bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = DAG.getConstant(0, Tmp1.getValueType()); 2910bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman CC = DAG.getCondCode(ISD::SETNE); 2911bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, Node->getValueType(0), Tmp1, Tmp2, 2912bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Tmp4, CC); 2913bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 2914bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 2915bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 2916bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::BR_CC: { 2917bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // Chain 2918bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(2); // LHS 2919bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(3); // RHS 2920bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(1); // CC 2921bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2922bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp2.getValueType()), 2923bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2, Tmp3, Tmp4, dl); 2924bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 2925bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2926bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp3.getNode() && "Can't legalize BR_CC with legal condition!"); 2927bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = DAG.getConstant(0, Tmp2.getValueType()); 2928bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = DAG.getCondCode(ISD::SETNE); 2929bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::BR_CC, dl, Node->getValueType(0), Tmp1, Tmp4, Tmp2, 2930bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Node->getOperand(4)); 2931bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 2932bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 2933bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 29343f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GLOBAL_OFFSET_TABLE: 29353f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalAddress: 29363f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalTLSAddress: 29373f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ExternalSymbol: 29383f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ConstantPool: 29393f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::JumpTable: 29403f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_W_CHAIN: 29413f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_WO_CHAIN: 29423f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_VOID: 29433f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // FIXME: Custom lowering for these operations shouldn't return null! 29443f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 29453f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(SDValue(Node, i)); 29463f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 29478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 29498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::PromoteNode(SDNode *Node, 29508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 2951e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT OVT = Node->getValueType(0); 29528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::UINT_TO_FP || 2953a64eb92fe305424ebde2e3de2b12160b8bf76047Eli Friedman Node->getOpcode() == ISD::SINT_TO_FP || 2954a64eb92fe305424ebde2e3de2b12160b8bf76047Eli Friedman Node->getOpcode() == ISD::SETCC) { 29558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT = Node->getOperand(0).getValueType(); 29568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 2957e50ed30282bb5b4a9ed952580523f2dda16215acOwen Anderson EVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), OVT); 29588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 2959509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SDValue Tmp1, Tmp2, Tmp3; 29608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 29618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 29628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 29638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 29648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Zero extend the argument. 29658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0)); 29668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Perform the larger operation. 29679a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1); 29688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::CTTZ) { 29698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman //if Tmp1 == sizeinbits(NVT) then Tmp1 = sizeinbits(Old VT) 29709a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), 29718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, DAG.getConstant(NVT.getSizeInBits(), NVT), 29728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ISD::SETEQ); 29738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, 29748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OVT.getSizeInBits(), NVT), Tmp1); 29758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else if (Node->getOpcode() == ISD::CTLZ) { 29768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Tmp1 = Tmp1 - (sizeinbits(NVT) - sizeinbits(Old VT)) 29778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, NVT, Tmp1, 29788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(NVT.getSizeInBits() - 29798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT.getSizeInBits(), NVT)); 29808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29819a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Results.push_back(DAG.getNode(ISD::TRUNCATE, dl, OVT, Tmp1)); 29828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: { 29848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman unsigned DiffBits = NVT.getSizeInBits() - OVT.getSizeInBits(); 29858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Tmp1); 29868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::BSWAP, dl, NVT, Tmp1); 29878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRL, dl, NVT, Tmp1, 29888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(DiffBits, TLI.getShiftAmountTy())); 29898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 29908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: 29938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_SINT: 29948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalFP_TO_INT(Node->getOperand(0), Node->getValueType(0), 29958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::FP_TO_SINT, dl); 29968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 29978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 29998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 30008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalINT_TO_FP(Node->getOperand(0), Node->getValueType(0), 30018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::SINT_TO_FP, dl); 30028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 30038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 3004f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::AND: 3005f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::OR: 3006c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::XOR: { 3007c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen unsigned ExtOp, TruncOp; 3008c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen if (OVT.isVector()) { 3009c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen ExtOp = ISD::BIT_CONVERT; 3010c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen TruncOp = ISD::BIT_CONVERT; 3011c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } else if (OVT.isInteger()) { 3012c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen ExtOp = ISD::ANY_EXTEND; 3013c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen TruncOp = ISD::TRUNCATE; 3014c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } else { 3015c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen llvm_report_error("Cannot promote logic operation"); 3016c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3017c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Promote each of the values to the new type. 3018c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 3019c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3020c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Perform the larger operation, then convert back 3021f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1, Tmp2); 3022c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Results.push_back(DAG.getNode(TruncOp, dl, OVT, Tmp1)); 3023f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3024c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3025c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::SELECT: { 3026509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned ExtOp, TruncOp; 30274bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Node->getValueType(0).isVector()) { 3028509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::BIT_CONVERT; 3029509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::BIT_CONVERT; 30304bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else if (Node->getValueType(0).isInteger()) { 3031509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::ANY_EXTEND; 3032509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::TRUNCATE; 3033509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } else { 3034509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::FP_EXTEND; 3035509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::FP_ROUND; 3036509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3037509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 3038509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Promote each of the values to the new type. 3039509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3040509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(2)); 3041509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Perform the larger operation, then round down. 3042509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp1, Tmp2, Tmp3); 3043509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (TruncOp != ISD::FP_ROUND) 3044509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1); 3045509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 3046509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1, 3047509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(0)); 3048509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3049509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3050c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3051509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 3052509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 3053509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 3054509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3055509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Cast the two input vectors. 3056509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(0)); 3057509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(1)); 3058509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3059509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Convert the shuffle mask to the right # elements. 3060509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = ShuffleWithNarrowerEltType(NVT, OVT, dl, Tmp1, Tmp2, Mask); 3061509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, OVT, Tmp1); 3062509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3063509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3064509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3065ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 306678d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen unsigned ExtOp = ISD::FP_EXTEND; 306778d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen if (NVT.isInteger()) { 306878d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ISD::CondCode CCCode = 306978d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen cast<CondCodeSDNode>(Node->getOperand(2))->get(); 307078d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ExtOp = isSignedIntSetCC(CCCode) ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND; 3071ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 307278d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 307378d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3074ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(DAG.getNode(ISD::SETCC, dl, Node->getValueType(0), 3075ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1, Tmp2, Node->getOperand(2))); 3076ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3077ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 30788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 30798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 30808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 30813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// SelectionDAG::Legalize - This is the entry point for the file. 30823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 308398a366d547772010e94609e4584489b3e5ce0043Bill Wendlingvoid SelectionDAG::Legalize(bool TypesNeedLegalizing, 308498a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 30853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// run - This is the main entry point to this class. 30863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 30871fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(*this, OptLevel).LegalizeDAG(); 30883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 30893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 3090