LegalizeDAG.cpp revision 9e9a0d5fc26878e51a58a8b57900fcbf952c2691
13e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===-- LegalizeDAG.cpp - Implement SelectionDAG::Legalize ----------------===// 2edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman// 33e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// The LLVM Compiler Infrastructure 43e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 54ee451de366474b9c228b4e5fa573795a715216dChris Lattner// This file is distributed under the University of Illinois Open Source 64ee451de366474b9c228b4e5fa573795a715216dChris Lattner// License. See LICENSE.TXT for details. 7edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman// 83e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 93e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// This file implements the SelectionDAG::Legalize method. 113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/CodeGen/SelectionDAG.h" 153e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/CodeGen/MachineFunction.h" 1645b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner#include "llvm/CodeGen/MachineFrameInfo.h" 17acd80ac7bb19f8bdfa55336d567c9ecbe695c8b8Jim Laskey#include "llvm/CodeGen/MachineJumpTableInfo.h" 1884bc5427d6883f73cfeae3da640acd011d35c006Chris Lattner#include "llvm/CodeGen/MachineModuleInfo.h" 1983489bb7700c69b7a4a8da59365c42d3f5c8129bDevang Patel#include "llvm/CodeGen/DwarfWriter.h" 2083489bb7700c69b7a4a8da59365c42d3f5c8129bDevang Patel#include "llvm/Analysis/DebugInfo.h" 2169de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman#include "llvm/CodeGen/PseudoSourceValue.h" 2261bbbabe3da27479cc9a3a36e49091a1141ba7a3Evan Cheng#include "llvm/Target/TargetFrameInfo.h" 233e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/Target/TargetLowering.h" 24e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner#include "llvm/Target/TargetData.h" 253d4ce1108520a4dcf31cb01523e145d286ee64c1Evan Cheng#include "llvm/Target/TargetMachine.h" 260f69b2910810b7c0971a739f18b37fae2a20eca5Chris Lattner#include "llvm/Target/TargetOptions.h" 27707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman#include "llvm/Target/TargetSubtarget.h" 28adf6a965a321372c640845407195594835921eb4Chris Lattner#include "llvm/CallingConv.h" 293e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner#include "llvm/Constants.h" 30c10305743c313558405079452138f03124e87581Reid Spencer#include "llvm/DerivedTypes.h" 3186e6cb924b85e7a288a4d8bfde5d1a8fb9810c88Bill Wendling#include "llvm/Function.h" 3283489bb7700c69b7a4a8da59365c42d3f5c8129bDevang Patel#include "llvm/GlobalVariable.h" 339adc0abad3c3ed40a268ccbcee0c74cb9e1359feOwen Anderson#include "llvm/LLVMContext.h" 345e46a19ec848cd4fc9649bd5170c43d9e657668cChris Lattner#include "llvm/Support/CommandLine.h" 35a4f0b3a084d120cfc5b5bb06f64b222f5cb72740Chris Lattner#include "llvm/Support/Compiler.h" 367d696d80409aad20bb5da0fc4eccab941dd371d4Torok Edwin#include "llvm/Support/ErrorHandling.h" 37dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands#include "llvm/Support/MathExtras.h" 387971514755a08ec156a1b9c0f7f05d67919c56b7Chris Lattner#include "llvm/ADT/DenseMap.h" 39f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner#include "llvm/ADT/SmallVector.h" 4000755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner#include "llvm/ADT/SmallPtrSet.h" 41033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng#include <map> 423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerusing namespace llvm; 433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// SelectionDAGLegalize - This takes an arbitrary SelectionDAG as input and 463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// hacks on it until the target machine can handle it. This involves 473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating value sizes the machine cannot handle (promoting small sizes to 483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// large sizes or splitting up large values into small values) as well as 493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating operations the machine cannot handle. 503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// This code also does a small amount of optimization and recognition of idioms 523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// as part of its processing. For example, if a target does not support a 533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 'setcc' instruction efficiently, but does support 'brcc' instruction, this 543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// will attempt merge setcc and brc instructions into brcc's. 553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 563e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnernamespace { 57360e8200ec544a3c877ff74b48f445140ac9bbd6Chris Lattnerclass VISIBILITY_HIDDEN SelectionDAGLegalize { 583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner TargetLowering &TLI; 593e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SelectionDAG &DAG; 6098a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel; 613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 626831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Libcall insertion helpers. 63fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 646831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// LastCALLSEQ_END - This keeps track of the CALLSEQ_END node that has been 656831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// legalized. We use this to ensure that calls are properly serialized 666831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// against each other, including inserted libcalls. 67475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LastCALLSEQ_END; 68fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 696831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// IsLegalizingCall - This member is used *only* for purposes of providing 70fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel /// helpful assertions that a libcall isn't created while another call is 716831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// being legalized (which could lead to non-serialized call sequences). 726831a815999dde4cf801e2076e66b4943964daf2Chris Lattner bool IsLegalizingCall; 73fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner enum LegalizeAction { 7568a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Legal, // The target natively supports this operation. 7668a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Promote, // This operation should be executed in a larger type. 77d74ea2bbd8bb630331f35ead42d385249bd42af8Chris Lattner Expand // Try to expand this to other ops, otherwise use a libcall. 783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner }; 79fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// ValueTypeActions - This is a bitvector that contains two bits for each 813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// value type, where the two bits correspond to the LegalizeAction enum. 823e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// This can be queried with "getTypeAction(VT)". 8368a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner TargetLowering::ValueTypeActionImpl ValueTypeActions; 843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// LegalizedNodes - For nodes that are of legal width, and that have more 863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// than one use, this map indicates what regularized operand to use. This 873e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// allows us to avoid legalizing the same thing more than once. 88475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue> LegalizedNodes; 893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 90475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void AddLegalizedOperand(SDValue From, SDValue To) { 9169a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(From, To)); 9269a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner // If someone requests legalization of the new node, return itself. 9369a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner if (From != To) 9469a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(To, To)); 958afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner } 968afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner 973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerpublic: 981fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(SelectionDAG &DAG, CodeGenOpt::Level ol); 993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// getTypeAction - Return how we should legalize values of this type, either 1013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// it is already legal or we need to expand it into multiple registers of 1023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// smaller integer type, or we need to promote it to a larger type. 10383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands LegalizeAction getTypeAction(MVT VT) const { 10468a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner return (LegalizeAction)ValueTypeActions.getTypeAction(VT); 1053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// isTypeLegal - Return true if this type is legal on this target. 1083e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 10983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands bool isTypeLegal(MVT VT) const { 1103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return getTypeAction(VT) == Legal; 1113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner void LegalizeDAG(); 1143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 115456a93afcec7740c45cafa8354317f7b17987a6dChris Lattnerprivate: 116c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// LegalizeOp - We know that the specified value has a legal type. 117c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// Recursively ensure that the operands have legal types, then return the 118c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// result. 119475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LegalizeOp(SDValue O); 120fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1217ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue OptimizeFloatStore(StoreSDNode *ST); 1227ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 1236867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// PerformInsertVectorEltInMemory - Some target cannot handle a variable 1246867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 1256867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// is necessary to spill the vector being inserted into to memory, perform 1266867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// the insert there, and then read the result back. 127475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue PerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, 1283f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 1293f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, 1303f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 131826695281344e3a4c4d44d73dd155107aafd689bDan Gohman 1325a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1335a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// performs the same shuffe in terms of order or result bytes, but on a type 1345a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// whose vector element type is narrower than the original shuffle type. 1355a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 1365a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue ShuffleWithNarrowerEltType(MVT NVT, MVT VT, DebugLoc dl, 1375a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue N1, SDValue N2, 1385a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SmallVectorImpl<int> &Mask) const; 139fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 140c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner bool LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 14100755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo); 1426831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 143bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen void LegalizeSetCCCondCode(MVT VT, SDValue &LHS, SDValue &RHS, SDValue &CC, 144bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl); 145fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 14647b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman SDValue ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, bool isSigned); 147f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman SDValue ExpandFPLibCall(SDNode *Node, RTLIB::Libcall Call_F32, 148f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, RTLIB::Libcall Call_F80, 149f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128); 150f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman SDValue ExpandIntLibCall(SDNode *Node, bool isSigned, RTLIB::Libcall Call_I16, 151f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I32, RTLIB::Libcall Call_I64, 152f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128); 153475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1548a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue EmitStackConvert(SDValue SrcOp, MVT SlotVT, MVT DestVT, DebugLoc dl); 155475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandBUILD_VECTOR(SDNode *Node); 156475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandSCALAR_TO_VECTOR(SDNode *Node); 1574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue ExpandDBG_STOPPOINT(SDNode *Node); 1584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman void ExpandDYNAMIC_STACKALLOC(SDNode *Node, 1594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results); 1604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue ExpandFCOPYSIGN(SDNode *Node); 161af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue ExpandLegalINT_TO_FP(bool isSigned, SDValue LegalOp, MVT DestVT, 162af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 163af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue PromoteLegalINT_TO_FP(SDValue LegalOp, MVT DestVT, bool isSigned, 164af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 165af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue PromoteLegalFP_TO_INT(SDValue LegalOp, MVT DestVT, bool isSigned, 166af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 167475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1688a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBSWAP(SDValue Op, DebugLoc dl); 1698a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBitCount(unsigned Opc, SDValue Op, DebugLoc dl); 170475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1713d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue ExpandExtractFromVectorThroughStack(SDValue Op); 1727ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue ExpandVectorBuildThroughStack(SDNode* Node); 1738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 1748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void ExpandNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void PromoteNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner}; 1773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1783e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1795a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1805a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// performs the same shuffe in terms of order or result bytes, but on a type 1815a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// whose vector element type is narrower than the original shuffle type. 1829008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman/// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 1835a5ca1519e04310f585197c20e7ae584b7f2d11fNate BegemanSDValue 1845a5ca1519e04310f585197c20e7ae584b7f2d11fNate BegemanSelectionDAGLegalize::ShuffleWithNarrowerEltType(MVT NVT, MVT VT, DebugLoc dl, 1855a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue N1, SDValue N2, 1869008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVectorImpl<int> &Mask) const { 1879008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman MVT EltVT = NVT.getVectorElementType(); 1885a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumMaskElts = VT.getVectorNumElements(); 1895a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumDestElts = NVT.getVectorNumElements(); 1909008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman unsigned NumEltsGrowth = NumDestElts / NumMaskElts; 1919008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1929008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(NumEltsGrowth && "Cannot promote to vector type with fewer elts!"); 1939008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1949008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman if (NumEltsGrowth == 1) 1959008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &Mask[0]); 1969008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1979008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVector<int, 8> NewMask; 1985a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman for (unsigned i = 0; i != NumMaskElts; ++i) { 1999008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman int Idx = Mask[i]; 2009008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman for (unsigned j = 0; j != NumEltsGrowth; ++j) { 2019008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman if (Idx < 0) 2029008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(-1); 2039008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman else 2049008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(Idx * NumEltsGrowth + j); 2054352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner } 20615684b29552393553524171bff1913e750f390f8Rafael Espindola } 2075a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman assert(NewMask.size() == NumDestElts && "Non-integer NumEltsGrowth?"); 2089008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(TLI.isShuffleMaskLegal(NewMask, NVT) && "Shuffle not legal?"); 2099008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &NewMask[0]); 2104352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 2114352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 2125aa4977fba97e816b5735f0bc53f16a46b24de63Bill WendlingSelectionDAGLegalize::SelectionDAGLegalize(SelectionDAG &dag, 2131fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman CodeGenOpt::Level ol) 214be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling : TLI(dag.getTargetLoweringInfo()), DAG(dag), OptLevel(ol), 2151fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman ValueTypeActions(TLI.getValueTypeActions()) { 216f2e19d5dcfa13472493bb18339555686182b7df9David Greene assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE && 2173e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Too many value types for ValueTypeActions to hold!"); 2183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2203e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAGLegalize::LegalizeDAG() { 2216831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LastCALLSEQ_END = DAG.getEntryNode(); 2226831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = false; 223e5ab34e05d701da042619bf540046efc3c7bc41fMon P Wang 224ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // The legalize process is inherently a bottom-up recursive process (users 225ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // legalize their uses before themselves). Given infinite stack space, we 226ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // could just start legalizing on the root and traverse the whole graph. In 227ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // practice however, this causes us to run out of stack space on large basic 22832fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // blocks. To avoid this problem, compute an ordering of the nodes where each 22932fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // node is only legalized after all of its operands are legalized. 230f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman DAG.AssignTopologicalOrder(); 231f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman for (SelectionDAG::allnodes_iterator I = DAG.allnodes_begin(), 232f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman E = prior(DAG.allnodes_end()); I != next(E); ++I) 233b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(I, 0)); 23432fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner 23532fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // Finally, it's possible the root changed. Get the new root. 236475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue OldRoot = DAG.getRoot(); 23732fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner assert(LegalizedNodes.count(OldRoot) && "Root didn't get legalized?"); 23832fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner DAG.setRoot(LegalizedNodes[OldRoot]); 2393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LegalizedNodes.clear(); 2413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remove dead nodes now. 243190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner DAG.RemoveDeadNodes(); 2443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2466831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 2476831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// FindCallEndFromCallStart - Given a chained node that is part of a call 2486831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_END node that terminates the call sequence. 2496831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallEndFromCallStart(SDNode *Node) { 2506831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_END) 2516831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Node; 2526831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->use_empty()) 2536831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; // No CallSeqEnd 254fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2556831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // The chain is usually at the end. 256475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue TheChain(Node, Node->getNumValues()-1); 2576831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (TheChain.getValueType() != MVT::Other) { 2586831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Sometimes it's at the beginning. 259475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, 0); 2606831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (TheChain.getValueType() != MVT::Other) { 2616831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Otherwise, hunt for it. 2626831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 1, e = Node->getNumValues(); i != e; ++i) 2636831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getValueType(i) == MVT::Other) { 264475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, i); 2656831a815999dde4cf801e2076e66b4943964daf2Chris Lattner break; 2666831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 267fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 268fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, we walked into a node without a chain. 2696831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (TheChain.getValueType() != MVT::Other) 2706831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2716831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2726831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 273fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2746831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (SDNode::use_iterator UI = Node->use_begin(), 2756831a815999dde4cf801e2076e66b4943964daf2Chris Lattner E = Node->use_end(); UI != E; ++UI) { 276fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2776831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Make sure to only follow users of our token chain. 2788968450305c28444edc3c272d8752a8db0c2f34aDan Gohman SDNode *User = *UI; 2796831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) 2806831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (User->getOperand(i) == TheChain) 2816831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (SDNode *Result = FindCallEndFromCallStart(User)) 2826831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 2836831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2846831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2856831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 2866831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 287fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// FindCallStartFromCallEnd - Given a chained node that is part of a call 2886831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_START node that initiates the call sequence. 2896831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallStartFromCallEnd(SDNode *Node) { 2906831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(Node && "Didn't find callseq_start for a call??"); 2916831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_START) return Node; 292fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2936831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(Node->getOperand(0).getValueType() == MVT::Other && 2946831a815999dde4cf801e2076e66b4943964daf2Chris Lattner "Node doesn't have a token chain argument!"); 295ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif return FindCallStartFromCallEnd(Node->getOperand(0).getNode()); 2966831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 2976831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 2986831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// LegalizeAllNodesNotLeadingTo - Recursively walk the uses of N, looking to 299fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// see if any uses can reach Dest. If no dest operands can get to dest, 3006831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// legalize them, legalize ourself, and return false, otherwise, return true. 301c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 302c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// Keep track of the nodes we fine that actually do lead to Dest in 303c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// NodesLeadingTo. This avoids retraversing them exponential number of times. 304c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 305c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattnerbool SelectionDAGLegalize::LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 30600755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo) { 3076831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (N == Dest) return true; // N certainly leads to Dest :) 308fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 309c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // If we've already processed this node and it does lead to Dest, there is no 310c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // need to reprocess it. 311c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (NodesLeadingTo.count(N)) return true; 312fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3136831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the first result of this node has been already legalized, then it cannot 3146831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // reach N. 31574807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman if (LegalizedNodes.count(SDValue(N, 0))) return false; 316fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3176831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node has not already been legalized. Check and legalize all 3186831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // operands. If none lead to Dest, then we can legalize this node. 3196831a815999dde4cf801e2076e66b4943964daf2Chris Lattner bool OperandsLeadToDest = false; 3206831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) 3216831a815999dde4cf801e2076e66b4943964daf2Chris Lattner OperandsLeadToDest |= // If an operand leads to Dest, so do we. 322ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif LegalizeAllNodesNotLeadingTo(N->getOperand(i).getNode(), Dest, NodesLeadingTo); 3236831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 324c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (OperandsLeadToDest) { 325c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo.insert(N); 326c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner return true; 327c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 3286831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3296831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node looks safe, legalize it and return false. 330b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(N, 0)); 3316831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return false; 3326831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 3336831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3349f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// ExpandConstantFP - Expands the ConstantFP node to an integer constant or 3359f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// a load from the constant pool. 336475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanstatic SDValue ExpandConstantFP(ConstantFPSDNode *CFP, bool UseCP, 3370d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman SelectionDAG &DAG, const TargetLowering &TLI) { 338004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng bool Extend = false; 33933c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen DebugLoc dl = CFP->getDebugLoc(); 340004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 341004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // If a FP immediate is precise when represented as a float and if the 342004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // target can do an extending load from float to double, we put it into 343004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // the constant pool as a float, even if it's is statically typed as a 344aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // double. This shrinks FP constants and canonicalizes them for targets where 345aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // an FP extending load is the same cost as a normal load (such as on the x87 346aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // fp stack or PPC FP unit). 34783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = CFP->getValueType(0); 3484fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman ConstantFP *LLVMC = const_cast<ConstantFP*>(CFP->getConstantFPValue()); 3499f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng if (!UseCP) { 350d2e936a513b01b2c5df91a9c0d80070e8c752aceChris Lattner assert((VT == MVT::f64 || VT == MVT::f32) && "Invalid type expansion"); 3517111b02c734c992b8c97d9918118768026dad79eDale Johannesen return DAG.getConstant(LLVMC->getValueAPF().bitcastToAPInt(), 352ef12057737229452c17983faa20857dba441ef05Evan Cheng (VT == MVT::f64) ? MVT::i64 : MVT::i32); 353279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng } 354279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng 35583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT OrigVT = VT; 35683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT SVT = VT; 357ef12057737229452c17983faa20857dba441ef05Evan Cheng while (SVT != MVT::f32) { 35883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SVT = (MVT::SimpleValueType)(SVT.getSimpleVT() - 1); 359ef12057737229452c17983faa20857dba441ef05Evan Cheng if (CFP->isValueValidForType(SVT, CFP->getValueAPF()) && 360ef12057737229452c17983faa20857dba441ef05Evan Cheng // Only do this if the target has a native EXTLOAD instruction from 361ef12057737229452c17983faa20857dba441ef05Evan Cheng // smaller type. 3620329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng TLI.isLoadExtLegal(ISD::EXTLOAD, SVT) && 363aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner TLI.ShouldShrinkFPConstant(OrigVT)) { 364debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson const Type *SType = SVT.getTypeForMVT(); 365baf3c404409d5e47b13984a7f95bfbd6d1f2e79eOwen Anderson LLVMC = cast<ConstantFP>(ConstantExpr::getFPTrunc(LLVMC, SType)); 366ef12057737229452c17983faa20857dba441ef05Evan Cheng VT = SVT; 367ef12057737229452c17983faa20857dba441ef05Evan Cheng Extend = true; 368ef12057737229452c17983faa20857dba441ef05Evan Cheng } 369004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng } 370004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 371475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(LLVMC, TLI.getPointerTy()); 3721606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 373ef12057737229452c17983faa20857dba441ef05Evan Cheng if (Extend) 37433c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen return DAG.getExtLoad(ISD::EXTLOAD, dl, 37539355f9fea790c5a1b12ef0fdcfeac3f533232eaDale Johannesen OrigVT, DAG.getEntryNode(), 3763069b8743769527ce7af6cfb6591a2f0fc2faee4Dan Gohman CPIdx, PseudoSourceValue::getConstantPool(), 37750284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman 0, VT, false, Alignment); 37833c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen return DAG.getLoad(OrigVT, dl, DAG.getEntryNode(), CPIdx, 37950284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, false, Alignment); 380004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng} 381004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 382f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedStore - Expands an unaligned store to 2 half-size stores. 383f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 384475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedStore(StoreSDNode *ST, SelectionDAG &DAG, 3850d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman const TargetLowering &TLI) { 386475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = ST->getChain(); 387475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = ST->getBasePtr(); 388475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Val = ST->getValue(); 38983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = Val.getValueType(); 390907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen int Alignment = ST->getAlignment(); 391907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen int SVOffset = ST->getSrcValueOffset(); 392bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = ST->getDebugLoc(); 39383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ST->getMemoryVT().isFloatingPoint() || 39483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands ST->getMemoryVT().isVector()) { 39505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MVT intVT = MVT::getIntegerVT(VT.getSizeInBits()); 39605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 39705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a bitconvert of the value to the integer type of the 39805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // same size, then a (misaligned) int store. 39905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // FIXME: Does not handle truncating floating point stores! 400bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::BIT_CONVERT, dl, intVT, Val); 401bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getStore(Chain, dl, Result, Ptr, ST->getSrcValue(), 40205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset, ST->isVolatile(), Alignment); 40305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } else { 40405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do a (aligned) store to a stack slot, then copy from the stack slot 40505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // to the final destination using (unaligned) integer loads and stores. 40605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MVT StoredVT = ST->getMemoryVT(); 40705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MVT RegVT = 40805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands TLI.getRegisterType(MVT::getIntegerVT(StoredVT.getSizeInBits())); 40905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned StoredBytes = StoredVT.getSizeInBits() / 8; 41005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned RegBytes = RegVT.getSizeInBits() / 8; 41105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned NumRegs = (StoredBytes + RegBytes - 1) / RegBytes; 41205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 413fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Make sure the stack slot is also aligned for the register type. 414fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands SDValue StackPtr = DAG.CreateStackTemporary(StoredVT, RegVT); 415fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 416fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Perform the original store, only redirected to the stack slot. 417fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Store = DAG.getTruncStore(Chain, dl, 418ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson Val, StackPtr, NULL, 0, StoredVT); 41905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 42005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SmallVector<SDValue, 8> Stores; 42105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned Offset = 0; 42205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 42305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do all but one copies using the full register width. 42405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands for (unsigned i = 1; i < NumRegs; i++) { 42505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Load one integer register's worth from the stack slot. 426bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getLoad(RegVT, dl, Store, StackPtr, NULL, 0); 42705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Store it to the final location. Remember the store. 428bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, Ptr, 42905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->getSrcValue(), SVOffset + Offset, 43005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->isVolatile(), 43105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 43205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Increment the pointers. 43305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Offset += RegBytes; 434bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 43505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Increment); 436bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 43705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 43805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 439fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // The last store may be partial. Do a truncating store. On big-endian 440fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // machines this requires an extending load from the stack slot to ensure 441fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // that the bits are in the right place. 442fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MVT MemVT = MVT::getIntegerVT(8 * (StoredBytes - Offset)); 443fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 444fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Load from the stack slot. 445bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Store, StackPtr, 446fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands NULL, 0, MemVT); 44705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 448bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, Ptr, 44905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->getSrcValue(), SVOffset + Offset, 450fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MemVT, ST->isVolatile(), 45105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 45205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The order of the stores doesn't matter - say it with a TokenFactor. 453bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 45405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Stores.size()); 45505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 456907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 45783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(ST->getMemoryVT().isInteger() && 45883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands !ST->getMemoryVT().isVector() && 459907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen "Unaligned store of unknown type."); 460f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Get the half-size VT 46183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NewStoredVT = 46283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands (MVT::SimpleValueType)(ST->getMemoryVT().getSimpleVT() - 1); 46383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands int NumBits = NewStoredVT.getSizeInBits(); 464f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int IncrementSize = NumBits / 8; 465f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 466f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Divide the stored value in two parts. 467475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 468475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = Val; 469bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Hi = DAG.getNode(ISD::SRL, dl, VT, Val, ShiftAmount); 470f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 471f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Store the two parts 472475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store1, Store2; 473bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store1 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Lo:Hi, Ptr, 474f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->getSrcValue(), SVOffset, NewStoredVT, 475f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->isVolatile(), Alignment); 476bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 477f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 478dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands Alignment = MinAlign(Alignment, IncrementSize); 479bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store2 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Hi:Lo, Ptr, 480f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->getSrcValue(), SVOffset + IncrementSize, 481f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio NewStoredVT, ST->isVolatile(), Alignment); 482f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 483bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Store1, Store2); 484f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 485f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 486f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedLoad - Expands an unaligned load to 2 half-size loads. 487f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 488475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedLoad(LoadSDNode *LD, SelectionDAG &DAG, 489e9530ecae4897fe8157bd4d7616043bd8c0484e2Dan Gohman const TargetLowering &TLI) { 490f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int SVOffset = LD->getSrcValueOffset(); 491475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = LD->getChain(); 492475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = LD->getBasePtr(); 49383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = LD->getValueType(0); 49483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT LoadedVT = LD->getMemoryVT(); 495bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = LD->getDebugLoc(); 49683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (VT.isFloatingPoint() || VT.isVector()) { 49705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MVT intVT = MVT::getIntegerVT(LoadedVT.getSizeInBits()); 49805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 49905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a (misaligned) integer load of the same size, 50005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // then bitconvert to floating point or vector. 501bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue newLoad = DAG.getLoad(intVT, dl, Chain, Ptr, LD->getSrcValue(), 50205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset, LD->isVolatile(), 503907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen LD->getAlignment()); 504bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::BIT_CONVERT, dl, LoadedVT, newLoad); 50505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (VT.isFloatingPoint() && LoadedVT != VT) 506bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, VT, Result); 507907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen 50805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Ops[] = { Result, Chain }; 509bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 51005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } else { 51105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Copy the value to a (aligned) stack slot using (unaligned) integer 51205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // loads and stores, then do a (aligned) load from the stack slot. 51305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MVT RegVT = TLI.getRegisterType(intVT); 51405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned LoadedBytes = LoadedVT.getSizeInBits() / 8; 51505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned RegBytes = RegVT.getSizeInBits() / 8; 51605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned NumRegs = (LoadedBytes + RegBytes - 1) / RegBytes; 51705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 518fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Make sure the stack slot is also aligned for the register type. 519fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands SDValue StackBase = DAG.CreateStackTemporary(LoadedVT, RegVT); 520fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 52105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 52205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SmallVector<SDValue, 8> Stores; 52305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue StackPtr = StackBase; 52405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned Offset = 0; 52505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 52605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do all but one copies using the full register width. 52705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands for (unsigned i = 1; i < NumRegs; i++) { 52805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Load one integer register's worth from the original location. 529bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getLoad(RegVT, dl, Chain, Ptr, LD->getSrcValue(), 53005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset + Offset, LD->isVolatile(), 53105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(LD->getAlignment(), Offset)); 53205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 533bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, StackPtr, 53405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands NULL, 0)); 53505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Increment the pointers. 53605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Offset += RegBytes; 537bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 538bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 53905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Increment); 54005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 54105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 54205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The last copy may be partial. Do an extending load. 543fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MVT MemVT = MVT::getIntegerVT(8 * (LoadedBytes - Offset)); 544bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Chain, Ptr, 54505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands LD->getSrcValue(), SVOffset + Offset, 546fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MemVT, LD->isVolatile(), 54705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(LD->getAlignment(), Offset)); 54805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 549fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // On big-endian machines this requires a truncating store to ensure 550fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // that the bits end up in the right place. 551bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, StackPtr, 552fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands NULL, 0, MemVT)); 55305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 55405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The order of the stores doesn't matter - say it with a TokenFactor. 555bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 55605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Stores.size()); 55705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 55805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Finally, perform the original load only redirected to the stack slot. 559bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Load = DAG.getExtLoad(LD->getExtensionType(), dl, VT, TF, StackBase, 56005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands NULL, 0, LoadedVT); 56105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 56205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Callers expect a MERGE_VALUES node. 56305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Ops[] = { Load, TF }; 564bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 56505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 566907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 56783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(LoadedVT.isInteger() && !LoadedVT.isVector() && 568e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner "Unaligned load of unsupported type."); 569e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner 5708155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // Compute the new VT that is half the size of the old one. This is an 5718155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // integer MVT. 57283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned NumBits = LoadedVT.getSizeInBits(); 57383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NewLoadedVT; 57483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands NewLoadedVT = MVT::getIntegerVT(NumBits/2); 575e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner NumBits >>= 1; 576fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 577e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned Alignment = LD->getAlignment(); 578e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned IncrementSize = NumBits / 8; 579f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ISD::LoadExtType HiExtType = LD->getExtensionType(); 580f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 581f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If the original load is NON_EXTLOAD, the hi part load must be ZEXTLOAD. 582f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (HiExtType == ISD::NON_EXTLOAD) 583f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio HiExtType = ISD::ZEXTLOAD; 584f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 585f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Load the value in two parts 586475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 587f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (TLI.isLittleEndian()) { 588bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getSrcValue(), 589f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset, NewLoadedVT, LD->isVolatile(), Alignment); 590bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 591f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 592bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getSrcValue(), 593f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset + IncrementSize, NewLoadedVT, LD->isVolatile(), 594dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands MinAlign(Alignment, IncrementSize)); 595f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 596bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getSrcValue(), 597ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson SVOffset, NewLoadedVT, LD->isVolatile(), Alignment); 598bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 599f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 600bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getSrcValue(), 601f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset + IncrementSize, NewLoadedVT, LD->isVolatile(), 602dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands MinAlign(Alignment, IncrementSize)); 603f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 604f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 605f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // aggregate the two parts 606475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 607bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::SHL, dl, VT, Hi, ShiftAmount); 608bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::OR, dl, VT, Result, Lo); 609f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 610bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 611f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Hi.getValue(1)); 612f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 613475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Result, TF }; 614bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 615f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 616912095becac923ff614d7b07728eb345ada67765Evan Cheng 6176867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// PerformInsertVectorEltInMemory - Some target cannot handle a variable 6186867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 6196867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// is necessary to spill the vector being inserted into to memory, perform 6206867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// the insert there, and then read the result back. 621475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize:: 622bb5da918545efb54857a09c983a5a7f22a7e04d4Dale JohannesenPerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, SDValue Idx, 623bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl) { 624475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1 = Vec; 625475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp2 = Val; 626475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = Idx; 627fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 6286867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // If the target doesn't support this, we have to spill the input vector 6296867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // to a temporary stack slot, update the element, then reload it. This is 6306867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // badness. We could also load the value into a vector register (either 6316867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // with a "move to register" or "extload into register" instruction, then 6326867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // permute it into place, if the idx is a constant and if the idx is 6336867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // supported by the target. 63483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = Tmp1.getValueType(); 63583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT EltVT = VT.getVectorElementType(); 63683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT IdxVT = Tmp3.getValueType(); 63783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT PtrVT = TLI.getPointerTy(); 638475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(VT); 6396867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 640ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif int SPFI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex(); 6416867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 6426867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the vector. 643bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Tmp1, StackPtr, 6440c39719bfc7d0b3e61fbd55e1115184a1d5f6ae7Mon P Wang PseudoSourceValue::getFixedStack(SPFI), 0); 6456867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 6466867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Truncate or zero extend offset to target pointer type. 6478e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands unsigned CastOpc = IdxVT.bitsGT(PtrVT) ? ISD::TRUNCATE : ISD::ZERO_EXTEND; 648bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(CastOpc, dl, PtrVT, Tmp3); 6496867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Add the offset to the index. 65083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned EltSize = EltVT.getSizeInBits()/8; 651bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(ISD::MUL, dl, IdxVT, Tmp3,DAG.getConstant(EltSize, IdxVT)); 652bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue StackPtr2 = DAG.getNode(ISD::ADD, dl, IdxVT, Tmp3, StackPtr); 6536867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the scalar value. 654bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ch = DAG.getTruncStore(Ch, dl, Tmp2, StackPtr2, 655a54cf176613f9ae8301519a61b8935652c0fb8aeDan Gohman PseudoSourceValue::getFixedStack(SPFI), 0, EltVT); 6566867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Load the updated vector. 657bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getLoad(VT, dl, Ch, StackPtr, 658a54cf176613f9ae8301519a61b8935652c0fb8aeDan Gohman PseudoSourceValue::getFixedStack(SPFI), 0); 6596867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman} 6606867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 661e9f1015d1f184a51aaadfd03be0846bd5e7d08a2Mon P Wang 6623f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanSDValue SelectionDAGLegalize:: 6633f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, SDValue Idx, DebugLoc dl) { 6643f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (ConstantSDNode *InsertPos = dyn_cast<ConstantSDNode>(Idx)) { 6653f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // SCALAR_TO_VECTOR requires that the type of the value being inserted 6663f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // match the element type of the vector being created, except for 6673f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // integers in which case the inserted value can be over width. 6683f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman MVT EltVT = Vec.getValueType().getVectorElementType(); 6693f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (Val.getValueType() == EltVT || 6703f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman (EltVT.isInteger() && Val.getValueType().bitsGE(EltVT))) { 6713f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ScVec = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, 6723f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Vec.getValueType(), Val); 6733f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6743f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman unsigned NumElts = Vec.getValueType().getVectorNumElements(); 6753f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // We generate a shuffle of InVec and ScVec, so the shuffle mask 6763f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // should be 0,1,2,3,4,5... with the appropriate element replaced with 6773f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // elt 0 of the RHS. 6783f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SmallVector<int, 8> ShufOps; 6793f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0; i != NumElts; ++i) 6803f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman ShufOps.push_back(i != InsertPos->getZExtValue() ? i : NumElts); 6813f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6823f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return DAG.getVectorShuffle(Vec.getValueType(), dl, Vec, ScVec, 6833f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman &ShufOps[0]); 6843f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 6853f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 6863f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return PerformInsertVectorEltInMemory(Vec, Val, Idx, dl); 6873f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman} 6883f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6897ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::OptimizeFloatStore(StoreSDNode* ST) { 6907ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Turn 'store float 1.0, Ptr' -> 'store int 0x12345678, Ptr' 6917ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: We shouldn't do this for TargetConstantFP's. 6927ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: move this to the DAG Combiner! Note that we can't regress due 6937ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // to phase ordering between legalized code and the dag combiner. This 6947ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // probably means that we need to integrate dag combiner and legalizer 6957ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // together. 6967ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We generally can't do this one for long doubles. 6977ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp1 = ST->getChain(); 6987ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp2 = ST->getBasePtr(); 6997ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp3; 7007ef3d178660b82d1571757e49f44b004d772a116Eli Friedman int SVOffset = ST->getSrcValueOffset(); 7017ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Alignment = ST->getAlignment(); 7027ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bool isVolatile = ST->isVolatile(); 7037ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = ST->getDebugLoc(); 7047ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(ST->getValue())) { 7057ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (CFP->getValueType(0) == MVT::f32 && 7067ef3d178660b82d1571757e49f44b004d772a116Eli Friedman getTypeAction(MVT::i32) == Legal) { 7077ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF(). 7087ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bitcastToAPInt().zextOrTrunc(32), 7097ef3d178660b82d1571757e49f44b004d772a116Eli Friedman MVT::i32); 7107ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 7117ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SVOffset, isVolatile, Alignment); 7127ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } else if (CFP->getValueType(0) == MVT::f64) { 7137ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // If this target supports 64-bit registers, do a single 64-bit store. 7147ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (getTypeAction(MVT::i64) == Legal) { 7157ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF().bitcastToAPInt(). 7167ef3d178660b82d1571757e49f44b004d772a116Eli Friedman zextOrTrunc(64), MVT::i64); 7177ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 7187ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SVOffset, isVolatile, Alignment); 7197ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } else if (getTypeAction(MVT::i32) == Legal && !ST->isVolatile()) { 7207ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, if the target supports 32-bit registers, use 2 32-bit 7217ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // stores. If the target supports neither 32- nor 64-bits, this 7227ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // xform is certainly not worth it. 7237ef3d178660b82d1571757e49f44b004d772a116Eli Friedman const APInt &IntVal =CFP->getValueAPF().bitcastToAPInt(); 7247ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Lo = DAG.getConstant(APInt(IntVal).trunc(32), MVT::i32); 7257ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Hi = DAG.getConstant(IntVal.lshr(32).trunc(32), MVT::i32); 7267ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (TLI.isBigEndian()) std::swap(Lo, Hi); 7277ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 7287ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Lo = DAG.getStore(Tmp1, dl, Lo, Tmp2, ST->getSrcValue(), 7297ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SVOffset, isVolatile, Alignment); 7307ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 7317ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DAG.getIntPtrConstant(4)); 7327ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Hi = DAG.getStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), SVOffset+4, 7337ef3d178660b82d1571757e49f44b004d772a116Eli Friedman isVolatile, MinAlign(Alignment, 4U)); 7347ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 7357ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 7367ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7377ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7387ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7397ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return SDValue(); 7407ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 7417ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 742a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// LegalizeOp - We know that the specified value has a legal type, and 743a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// that its operands are legal. Now ensure that the operation itself 744a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// is legal, recursively ensuring that the operands' operations remain 745a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// legal. 746475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) { 74709ec1b058331aadb29a348091611d23892b5c492Chris Lattner if (Op.getOpcode() == ISD::TargetConstant) // Allow illegal target nodes. 74809ec1b058331aadb29a348091611d23892b5c492Chris Lattner return Op; 749fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 750ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif SDNode *Node = Op.getNode(); 7517d2ad624fa749a6d3edac0d94e9c107989c16304Dale Johannesen DebugLoc dl = Node->getDebugLoc(); 752e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner 7531fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 7541fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman assert(getTypeAction(Node->getValueType(i)) == Legal && 7551fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7561fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman 7571fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 7581fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman assert((isTypeLegal(Node->getOperand(i).getValueType()) || 7591fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman Node->getOperand(i).getOpcode() == ISD::TargetConstant) && 7601fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7613e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 76245982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 76345982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 764475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 765e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (I != LegalizedNodes.end()) return I->second; 7663e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 767475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 768475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result = Op; 769456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner bool isCustom = false; 770fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 7718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Figure out the correct action; the way to query this varies by opcode 7728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::LegalizeAction Action; 7738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman bool SimpleFinishLegalizing = true; 7743e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 7758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_W_CHAIN: 7768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_WO_CHAIN: 7778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_VOID: 7788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAARG: 7798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STACKSAVE: 7808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), MVT::Other); 7818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 7828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 7838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 7848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 7858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 7868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType()); 7878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 7888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: 7898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 7908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT InnerType = cast<VTSDNode>(Node->getOperand(1))->getVT(); 7918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), InnerType); 7928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 7938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 7943be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SELECT_CC: 7953be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SETCC: 7963be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::BR_CC: { 7973be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CCOperand = Node->getOpcode() == ISD::SELECT_CC ? 4 : 7983be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getOpcode() == ISD::SETCC ? 2 : 1; 7993be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CompareOperand = Node->getOpcode() == ISD::BR_CC ? 2 : 0; 8003be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman MVT OpVT = Node->getOperand(CompareOperand).getValueType(); 8013be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman ISD::CondCode CCCode = 8023be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman cast<CondCodeSDNode>(Node->getOperand(CCOperand))->get(); 8033be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getCondCodeAction(CCCode, OpVT); 8043be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Action == TargetLowering::Legal) { 8053be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Node->getOpcode() == ISD::SELECT_CC) 8063be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 8073be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getValueType(0)); 8083be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman else 8093be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), OpVT); 8103be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8113be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 8123be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::LOAD: 8148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STORE: 815ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: Model these properly. LOAD and STORE are complicated, and 816ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // STORE expects the unlegalized operand in some cases. 817ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 818ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_START: 8208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_END: 821ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: This shouldn't be necessary. These nodes have special properties 822ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // dealing with the recursive nature of legalization. Removing this 823ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // special case should be done as part of making LegalizeDAG non-recursive. 824ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 825ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 826ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::CALL: 827ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: Legalization for calls requires custom-lowering the call before 828ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // legalizing the operands! (I haven't looked into precisely why.) 8298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SimpleFinishLegalizing = false; 8308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: 8328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 8338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SADDO: 8348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SSUBO: 8358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UADDO: 8368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::USUBO: 8378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SMULO: 8388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UMULO: 8398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FPOWI: 8408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 8418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 8428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 843f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // These operations lie about being legal: when they claim to be legal, 844f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // they should actually be expanded. 8458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Action == TargetLowering::Legal) 8478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Expand; 8488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAMPOLINE: 8508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 8518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 852ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::FORMAL_ARGUMENTS: 8534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // These operations lie about being legal: when they claim to be legal, 8544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // they should actually be custom-lowered. 8554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Action == TargetLowering::Legal) 8574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TargetLowering::Custom; 8588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BUILD_VECTOR: 860b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // A weird case: legalization for BUILD_VECTOR never legalizes the 861b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // operands! 862b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // FIXME: This really sucks... changing it isn't semantically incorrect, 863b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // but it massively pessimizes the code for floating-point BUILD_VECTORs 864b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // because ConstantFP operands get legalized into constant pool loads 865b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // before the BUILD_VECTOR code can see them. It doesn't usually bite, 866b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // though, because BUILD_VECTORS usually get lowered into other nodes 867b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // which get legalized properly. 8688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SimpleFinishLegalizing = false; 869948c1b1cda280c6428dbeaa03a6c2c559dbb93f4Chris Lattner break; 8703e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 871d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner if (Node->getOpcode() >= ISD::BUILTIN_OP_END) { 8728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Legal; 8738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 8748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 8768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 878d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner 8798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (SimpleFinishLegalizing) { 8808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVector<SDValue, 8> Ops, ResultVals; 8818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 8828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops.push_back(LegalizeOp(Node->getOperand(i))); 8838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 8848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: break; 8858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR: 8868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRIND: 8878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_JT: 8888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_CC: 8898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRCOND: 8908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RET: 8918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Branches tweak the chain to include LastCALLSEQ_END 8928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[0] = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Ops[0], 8938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END); 8948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[0] = LegalizeOp(Ops[0]); 8958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 8968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SHL: 8988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRL: 8998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRA: 9008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTL: 9018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTR: 9028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Legalizing shifts/rotates requires adjusting the shift amount 9038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // to the appropriate width. 9048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!Ops[1].getValueType().isVector()) 9058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[1] = LegalizeOp(DAG.getShiftAmountOperand(Ops[1])); 9068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Result = DAG.UpdateNodeOperands(Result.getValue(0), Ops.data(), 9108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops.size()); 9118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Action) { 9128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Legal: 913d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 9148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Result.getValue(i)); 9158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Custom: 9178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FIXME: The handling for custom lowering with multiple results is 9188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // a complete mess. 9198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = TLI.LowerOperation(Result, DAG); 9208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Tmp1.getNode()) { 9218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) { 9228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (e == 1) 9238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1); 9248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 9258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1.getValue(i)); 9268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FALL THROUGH 9318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Expand: 9328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ExpandNode(Result.getNode(), ResultVals); 9338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Promote: 9358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman PromoteNode(Result.getNode(), ResultVals); 9368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!ResultVals.empty()) { 9398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = ResultVals.size(); i != e; ++i) { 9408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (ResultVals[i] != SDValue(Node, i)) 9418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals[i] = LegalizeOp(ResultVals[i]); 9428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman AddLegalizedOperand(SDValue(Node, i), ResultVals[i]); 9438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman return ResultVals[Op.getResNo()]; 945d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner } 9468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 9498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: 950e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#ifndef NDEBUG 95139833585556a69de12053ca1e104fe7edfd86cbdDan Gohman cerr << "NODE: "; Node->dump(&DAG); cerr << "\n"; 952e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#endif 953c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Do not know how to legalize this operator!"); 954f4ec817299a4187044a6162c2f520772b3ad69a0Chris Lattner case ISD::CALL: 955fdfded55888e35b76bb70231a5bb2f60877c2f6aChris Lattner // The only option for this is to custom lower it. 956b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner Tmp3 = TLI.LowerOperation(Result.getValue(0), DAG); 957ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif assert(Tmp3.getNode() && "Target didn't custom lower this node!"); 9580ea0356dff38dfd0420b8c0a2fdf2fae7898c024Dale Johannesen // A call within a calling sequence must be legalized to something 9590ea0356dff38dfd0420b8c0a2fdf2fae7898c024Dale Johannesen // other than the normal CALLSEQ_END. Violating this gets Legalize 9600ea0356dff38dfd0420b8c0a2fdf2fae7898c024Dale Johannesen // into an infinite loop. 9610ea0356dff38dfd0420b8c0a2fdf2fae7898c024Dale Johannesen assert ((!IsLegalizingCall || 9620ea0356dff38dfd0420b8c0a2fdf2fae7898c024Dale Johannesen Node->getOpcode() != ISD::CALL || 963ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Tmp3.getNode()->getOpcode() != ISD::CALLSEQ_END) && 9640ea0356dff38dfd0420b8c0a2fdf2fae7898c024Dale Johannesen "Nested CALLSEQ_START..CALLSEQ_END not supported."); 9650f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling 9660f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling // The number of incoming and outgoing values should match; unless the final 9670f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling // outgoing value is a flag. 968ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif assert((Tmp3.getNode()->getNumValues() == Result.getNode()->getNumValues() || 969ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif (Tmp3.getNode()->getNumValues() == Result.getNode()->getNumValues() + 1 && 970ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Tmp3.getNode()->getValueType(Tmp3.getNode()->getNumValues() - 1) == 9710f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling MVT::Flag)) && 972b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner "Lowering call/formal_arguments produced unexpected # results!"); 973fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 974f4ec817299a4187044a6162c2f520772b3ad69a0Chris Lattner // Since CALL/FORMAL_ARGUMENTS nodes produce multiple values, make sure to 975e2e41730ccfa9bebfabbd17ab3454aa2bb620b2aChris Lattner // remember that we legalized all of them, so it doesn't get relegalized. 976ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif for (unsigned i = 0, e = Tmp3.getNode()->getNumValues(); i != e; ++i) { 977ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()->getValueType(i) == MVT::Flag) 9780f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling continue; 979b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner Tmp1 = LegalizeOp(Tmp3.getValue(i)); 98099a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif if (Op.getResNo() == i) 981e2e41730ccfa9bebfabbd17ab3454aa2bb620b2aChris Lattner Tmp2 = Tmp1; 982475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, i), Tmp1); 983e2e41730ccfa9bebfabbd17ab3454aa2bb620b2aChris Lattner } 984e2e41730ccfa9bebfabbd17ab3454aa2bb620b2aChris Lattner return Tmp2; 985b2827b0901162169bb2692b77a839c9767849134Chris Lattner case ISD::BUILD_VECTOR: 986b2827b0901162169bb2692b77a839c9767849134Chris Lattner switch (TLI.getOperationAction(ISD::BUILD_VECTOR, Node->getValueType(0))) { 987c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 9882332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner case TargetLowering::Custom: 9892332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Tmp3 = TLI.LowerOperation(Result, DAG); 990ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()) { 9912332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Result = Tmp3; 9922332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 9932332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 9942332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner // FALLTHROUGH 995ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner case TargetLowering::Expand: 996ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandBUILD_VECTOR(Result.getNode()); 997b2827b0901162169bb2692b77a839c9767849134Chris Lattner break; 9982332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 9992332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 10006831a815999dde4cf801e2076e66b4943964daf2Chris Lattner case ISD::CALLSEQ_START: { 10016831a815999dde4cf801e2076e66b4943964daf2Chris Lattner SDNode *CallEnd = FindCallEndFromCallStart(Node); 1002fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10036831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Recursively Legalize all of the inputs of the call end that do not lead 10046831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // to this call start. This ensures that any libcalls that need be inserted 10056831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // are inserted *before* the CALLSEQ_START. 100600755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner {SmallPtrSet<SDNode*, 32> NodesLeadingTo; 10076831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = CallEnd->getNumOperands(); i != e; ++i) 1008ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif LegalizeAllNodesNotLeadingTo(CallEnd->getOperand(i).getNode(), Node, 1009c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo); 1010c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 10116831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 10126831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Now that we legalized all of the inputs (which may have inserted 10136831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // libcalls) create the new CALLSEQ_START node. 10146831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 10156831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 10166831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Merge in the last call, to ensure that this call start after the last 10176831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // call ended. 1018c5d7d7c715f7b7a4eeea1ceaafefc3d1d6df2addChris Lattner if (LastCALLSEQ_END.getOpcode() != ISD::EntryToken) { 1019fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Tmp1 = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 1020ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp1, LastCALLSEQ_END); 1021b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner Tmp1 = LegalizeOp(Tmp1); 1022b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner } 1023fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10246831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Do not try to legalize the target-specific arguments (#1+). 10256831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Tmp1 != Node->getOperand(0)) { 1026475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 10276831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Ops[0] = Tmp1; 1028f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 10296831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1030fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10316831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Remember that the CALLSEQ_START is legalized. 10324b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(0), Result); 10334b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) // If this has a flag result, remember it. 10344b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 1035fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10366831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Now that the callseq_start and all of the non-call nodes above this call 1037fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // sequence have been legalized, legalize the call itself. During this 10386831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // process, no libcalls can/will be inserted, guaranteeing that no calls 10396831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // can overlap. 10406831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "Inconsistent sequentialization of calls!"); 10416831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Note that we are selecting this call! 1042475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LastCALLSEQ_END = SDValue(CallEnd, 0); 10436831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = true; 1044fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10456831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call, starting from the CALLSEQ_END. 10466831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(LastCALLSEQ_END); 10476831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "CALLSEQ_END should have cleared this!"); 10486831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 10496831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 105016cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner case ISD::CALLSEQ_END: 10516831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the CALLSEQ_START node hasn't been legalized first, legalize it. This 10526831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // will cause this node to be legalized as well as handling libcalls right. 1053ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (LastCALLSEQ_END.getNode() != Node) { 1054475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LegalizeOp(SDValue(FindCallStartFromCallEnd(Node), 0)); 1055475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 10566831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(I != LegalizedNodes.end() && 10576831a815999dde4cf801e2076e66b4943964daf2Chris Lattner "Legalizing the call start should have legalized this node!"); 10586831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return I->second; 10596831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1060fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1061fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, the call start has been legalized and everything is going 10626831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // according to plan. Just legalize ourselves normally here. 10633e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 106470814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // Do not try to legalize the target-specific arguments (#1+), except for 106570814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // an optional flag input. 106670814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Node->getOperand(Node->getNumOperands()-1).getValueType() != MVT::Flag){ 106770814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0)) { 1068475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 106970814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 1070f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 107170814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 107270814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } else { 107370814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(Node->getNumOperands()-1)); 107470814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0) || 107570814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 != Node->getOperand(Node->getNumOperands()-1)) { 1076475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 107770814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 107870814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops.back() = Tmp2; 1079f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 108070814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 10816a5428934ba6159c1acc541944332e51a6cfa59aChris Lattner } 10824b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner assert(IsLegalizingCall && "Call sequence imbalance between start/end?"); 10836831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // This finishes up call legalization. 10846831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = false; 1085fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10864b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner // If the CALLSEQ_END node has a flag, remember that we legalized it. 1087475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Result.getValue(0)); 10884b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) 1089475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Result.getValue(1)); 109099a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Result.getValue(Op.getResNo()); 1091f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::LOAD: { 1092466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng LoadSDNode *LD = cast<LoadSDNode>(Node); 1093466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = LegalizeOp(LD->getChain()); // Legalize the chain. 1094466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp2 = LegalizeOp(LD->getBasePtr()); // Legalize the base pointer. 10952d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 1096466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng ISD::LoadExtType ExtType = LD->getExtensionType(); 1097466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng if (ExtType == ISD::NON_EXTLOAD) { 109883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = Node->getValueType(0); 1099466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, LD->getOffset()); 1100466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = Result.getValue(0); 1101466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = Result.getValue(1); 1102fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1103466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng switch (TLI.getOperationAction(Node->getOpcode(), VT)) { 1104c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 1105f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1106f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned load and the target doesn't support it, 1107f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1108f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (!TLI.allowsUnalignedMemoryAccesses()) { 1109f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio unsigned ABIAlignment = TLI.getTargetData()-> 1110debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson getABITypeAlignment(LD->getMemoryVT().getTypeForMVT()); 1111f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (LD->getAlignment() < ABIAlignment){ 1112debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 1113debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson DAG, TLI); 1114f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp3 = Result.getOperand(0); 1115f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Tmp4 = Result.getOperand(1); 1116907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp3 = LegalizeOp(Tmp3); 1117907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen Tmp4 = LegalizeOp(Tmp4); 1118f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1119f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1120f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 1121466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Custom: 1122466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = TLI.LowerOperation(Tmp3, DAG); 1123ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) { 1124466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = LegalizeOp(Tmp1); 1125466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1126466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1127466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1128466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng case TargetLowering::Promote: { 1129466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Only promote a load of vector type to another. 113083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Cannot promote this load!"); 1131466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Change base type to a different vector type. 113283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), VT); 1133466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng 1134ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp1 = DAG.getLoad(NVT, dl, Tmp1, Tmp2, LD->getSrcValue(), 1135d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman LD->getSrcValueOffset(), 1136d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman LD->isVolatile(), LD->getAlignment()); 1137b300d2aa3ef08b5074449e2c05804717f488f4e4Dale Johannesen Tmp3 = LegalizeOp(DAG.getNode(ISD::BIT_CONVERT, dl, VT, Tmp1)); 113841f6cbbeb21d7d4376b8c0302b9766c3e43be5f2Evan Cheng Tmp4 = LegalizeOp(Tmp1.getValue(1)); 1139466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1140f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 1141466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 1142fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Since loads produce two values, make sure to remember that we 1143466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // legalized both of them. 1144475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp3); 1145475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp4); 114699a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Op.getResNo() ? Tmp4 : Tmp3; 1147466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } else { 114883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT SrcVT = LD->getMemoryVT(); 114983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SrcWidth = SrcVT.getSizeInBits(); 1150f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands int SVOffset = LD->getSrcValueOffset(); 1151f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned Alignment = LD->getAlignment(); 1152f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands bool isVolatile = LD->isVolatile(); 1153f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 115483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (SrcWidth != SrcVT.getStoreSizeInBits() && 1155f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Some targets pretend to have an i1 loading operation, and actually 1156f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // load an i8. This trick is correct for ZEXTLOAD because the top 7 1157f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // bits are guaranteed to be zero; it helps the optimizers understand 1158f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // that these bits are zero. It is also useful for EXTLOAD, since it 1159f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // tells the optimizers that those bits are undefined. It would be 1160f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // nice to have an effective generic way of getting these benefits... 1161f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Until such a way is found, don't insist on promoting i1 here. 1162f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands (SrcVT != MVT::i1 || 11630329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng TLI.getLoadExtAction(ExtType, MVT::i1) == TargetLowering::Promote)) { 1164f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Promote to a byte-sized load if not loading an integral number of 1165f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // bytes. For example, promote EXTLOAD:i20 -> EXTLOAD:i24. 116683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned NewWidth = SrcVT.getStoreSizeInBits(); 116783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = MVT::getIntegerVT(NewWidth); 1168475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ch; 1169f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1170f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // The extra bits are guaranteed to be zero, since we stored them that 1171f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // way. A zext load from NVT thus automatically gives zext from SrcVT. 1172f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1173f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ISD::LoadExtType NewExtType = 1174f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ExtType == ISD::ZEXTLOAD ? ISD::ZEXTLOAD : ISD::EXTLOAD; 1175f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1176ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getExtLoad(NewExtType, dl, Node->getValueType(0), 1177f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1, Tmp2, LD->getSrcValue(), SVOffset, 1178f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands NVT, isVolatile, Alignment); 1179f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1180f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Ch = Result.getValue(1); // The chain. 1181f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1182f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (ExtType == ISD::SEXTLOAD) 1183f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Having the top bits zero doesn't help when sign extending. 1184fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 1185ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), 1186f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result, DAG.getValueType(SrcVT)); 1187f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands else if (ExtType == ISD::ZEXTLOAD || NVT == Result.getValueType()) 1188f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // All the top bits are guaranteed to be zero - inform the optimizers. 1189fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::AssertZext, dl, 1190ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), Result, 1191f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getValueType(SrcVT)); 1192f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1193f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); 1194f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Ch); 1195f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else if (SrcWidth & (SrcWidth - 1)) { 1196f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // If not loading a power-of-2 number of bits, expand as two loads. 119783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(SrcVT.isExtended() && !SrcVT.isVector() && 1198f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands "Unsupported extload!"); 1199f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned RoundWidth = 1 << Log2_32(SrcWidth); 1200f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(RoundWidth < SrcWidth); 1201f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned ExtraWidth = SrcWidth - RoundWidth; 1202f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(ExtraWidth < RoundWidth); 1203f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 1204f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands "Load size not an integral number of bytes!"); 120583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT RoundVT = MVT::getIntegerVT(RoundWidth); 120683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT ExtraVT = MVT::getIntegerVT(ExtraWidth); 1207475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi, Ch; 1208f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned IncrementSize; 1209f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1210f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (TLI.isLittleEndian()) { 1211f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // EXTLOAD:i24 -> ZEXTLOAD:i16 | (shl EXTLOAD@+2:i8, 16) 1212f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the bottom RoundWidth bits. 1213ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, 1214ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Tmp1, Tmp2, 1215f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset, RoundVT, isVolatile, 1216f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Alignment); 1217f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1218f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the remaining ExtraWidth bits. 1219f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands IncrementSize = RoundWidth / 8; 1220ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 1221f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getIntPtrConstant(IncrementSize)); 1222ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2, 1223f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset + IncrementSize, 1224f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ExtraVT, isVolatile, 1225f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands MinAlign(Alignment, IncrementSize)); 1226f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1227f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Build a factor node to remember that this load is independent of the 1228f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // other one. 1229ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 1230f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Hi.getValue(1)); 1231f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1232f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Move the top bits to the right place. 1233ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 1234f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getConstant(RoundWidth, TLI.getShiftAmountTy())); 1235f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1236f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Join the hi and lo parts. 1237ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 1238f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 1239f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Big endian - avoid unaligned loads. 1240f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // EXTLOAD:i24 -> (shl EXTLOAD:i16, 8) | ZEXTLOAD@+2:i8 1241f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the top RoundWidth bits. 1242ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getExtLoad(ExtType, dl, Node->getValueType(0), Tmp1, Tmp2, 1243f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset, RoundVT, isVolatile, 1244f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Alignment); 1245f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1246f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Load the remaining ExtraWidth bits. 1247f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands IncrementSize = RoundWidth / 8; 1248ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 1249f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getIntPtrConstant(IncrementSize)); 1250fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, 1251ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Tmp1, Tmp2, 1252f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValue(), SVOffset + IncrementSize, 1253f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands ExtraVT, isVolatile, 1254f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands MinAlign(Alignment, IncrementSize)); 1255f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1256f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Build a factor node to remember that this load is independent of the 1257f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // other one. 1258ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Ch = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 1259f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Hi.getValue(1)); 1260f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1261f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Move the top bits to the right place. 1262ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SHL, dl, Hi.getValueType(), Hi, 1263f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy())); 1264f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1265f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Join the hi and lo parts. 1266ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getNode(ISD::OR, dl, Node->getValueType(0), Lo, Hi); 1267f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1268f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1269f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); 1270f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Ch); 1271f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else { 12720329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng switch (TLI.getLoadExtAction(ExtType, SrcVT)) { 1273c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 1274f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Custom: 1275f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands isCustom = true; 1276f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // FALLTHROUGH 1277f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Legal: 1278f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, LD->getOffset()); 1279f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = Result.getValue(0); 1280f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = Result.getValue(1); 1281f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1282f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (isCustom) { 1283f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp3 = TLI.LowerOperation(Result, DAG); 1284ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()) { 1285f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Tmp3); 1286f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Tmp3.getValue(1)); 1287f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1288f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } else { 1289f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // If this is an unaligned load and the target doesn't support it, 1290f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // expand it. 1291f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (!TLI.allowsUnalignedMemoryAccesses()) { 1292f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands unsigned ABIAlignment = TLI.getTargetData()-> 1293debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson getABITypeAlignment(LD->getMemoryVT().getTypeForMVT()); 1294f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (LD->getAlignment() < ABIAlignment){ 1295debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), 1296debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson DAG, TLI); 1297f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = Result.getOperand(0); 1298f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = Result.getOperand(1); 1299f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Tmp1); 1300f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Tmp2); 1301f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1302f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1303f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1304f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 1305f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Expand: 1306f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // f64 = EXTLOAD f32 should expand to LOAD, FP_EXTEND 1307f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (SrcVT == MVT::f32 && Node->getValueType(0) == MVT::f64) { 1308ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen SDValue Load = DAG.getLoad(SrcVT, dl, Tmp1, Tmp2, LD->getSrcValue(), 1309f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValueOffset(), 1310f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->isVolatile(), LD->getAlignment()); 1311fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::FP_EXTEND, dl, 1312ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Load); 1313f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); // Relegalize new nodes. 1314f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Load.getValue(1)); 1315f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 1316f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1317f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(ExtType != ISD::EXTLOAD &&"EXTLOAD should always be supported!"); 1318f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Turn the unsupported load into an EXTLOAD followed by an explicit 1319f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // zero/sign extend inreg. 1320ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getExtLoad(ISD::EXTLOAD, dl, Node->getValueType(0), 1321f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1, Tmp2, LD->getSrcValue(), 1322f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValueOffset(), SrcVT, 1323f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->isVolatile(), LD->getAlignment()); 1324475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ValRes; 1325f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (ExtType == ISD::SEXTLOAD) 1326ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen ValRes = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 1327ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), 1328f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result, DAG.getValueType(SrcVT)); 1329f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands else 1330ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen ValRes = DAG.getZeroExtendInReg(Result, dl, SrcVT); 1331f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(ValRes); // Relegalize new nodes. 1332f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Result.getValue(1)); // Relegalize new nodes. 1333466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1334466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 13359d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth } 1336f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1337466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Since loads produce two values, make sure to remember that we legalized 1338466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // both of them. 1339475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp1); 1340475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp2); 134199a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Op.getResNo() ? Tmp2 : Tmp1; 134201ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 134301ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 1344f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::STORE: { 13458b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng StoreSDNode *ST = cast<StoreSDNode>(Node); 13468b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = LegalizeOp(ST->getChain()); // Legalize the chain. 13478b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp2 = LegalizeOp(ST->getBasePtr()); // Legalize the pointer. 1348d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman int SVOffset = ST->getSrcValueOffset(); 1349d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman unsigned Alignment = ST->getAlignment(); 1350d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman bool isVolatile = ST->isVolatile(); 13518b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 13528b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng if (!ST->isTruncatingStore()) { 13537ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (SDNode *OptStore = OptimizeFloatStore(ST).getNode()) { 13547ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Result = SDValue(OptStore, 0); 13557ef3d178660b82d1571757e49f44b004d772a116Eli Friedman break; 1356d93d46ee7e0a0e539d42139b85c71b2b8c3968feChris Lattner } 1357fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1358957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman { 13598b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp3 = LegalizeOp(ST->getValue()); 1360fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2, 13618b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng ST->getOffset()); 13628b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 136383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = Tmp3.getValueType(); 13648b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng switch (TLI.getOperationAction(ISD::STORE, VT)) { 1365c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 1366f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1367f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned store and the target doesn't support it, 1368f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1369f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (!TLI.allowsUnalignedMemoryAccesses()) { 1370f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio unsigned ABIAlignment = TLI.getTargetData()-> 1371debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson getABITypeAlignment(ST->getMemoryVT().getTypeForMVT()); 1372f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (ST->getAlignment() < ABIAlignment) 1373ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), DAG, 1374f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio TLI); 1375f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1376f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 13778b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Custom: 13788b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = TLI.LowerOperation(Result, DAG); 1379ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) Result = Tmp1; 13808b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 13818b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Promote: 138283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Unknown legal promote case!"); 1383fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Tmp3 = DAG.getNode(ISD::BIT_CONVERT, dl, 13848b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng TLI.getTypeToPromoteTo(ISD::STORE, VT), Tmp3); 1385ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, 1386d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman ST->getSrcValue(), SVOffset, isVolatile, 1387d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman Alignment); 13888b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 13898b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 13902efce0a589e2a688a1a06b5dc2ed0db32ae79924Chris Lattner break; 1391f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 13928b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } else { 1393957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman Tmp3 = LegalizeOp(ST->getValue()); 13947e857201f387d004571e6058e2ea709163500f38Duncan Sands 139583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT StVT = ST->getMemoryVT(); 139683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned StWidth = StVT.getSizeInBits(); 13977e857201f387d004571e6058e2ea709163500f38Duncan Sands 139883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (StWidth != StVT.getStoreSizeInBits()) { 13997e857201f387d004571e6058e2ea709163500f38Duncan Sands // Promote to a byte-sized store with upper bits zero if not 14007e857201f387d004571e6058e2ea709163500f38Duncan Sands // storing an integral number of bytes. For example, promote 14017e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i1 X -> TRUNCSTORE:i8 (and X, 1) 140283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = MVT::getIntegerVT(StVT.getStoreSizeInBits()); 1403ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getZeroExtendInReg(Tmp3, dl, StVT); 1404ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14057e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset, NVT, isVolatile, Alignment); 14067e857201f387d004571e6058e2ea709163500f38Duncan Sands } else if (StWidth & (StWidth - 1)) { 14077e857201f387d004571e6058e2ea709163500f38Duncan Sands // If not storing a power-of-2 number of bits, expand as two stores. 140883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(StVT.isExtended() && !StVT.isVector() && 14097e857201f387d004571e6058e2ea709163500f38Duncan Sands "Unsupported truncstore!"); 14107e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned RoundWidth = 1 << Log2_32(StWidth); 14117e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(RoundWidth < StWidth); 14127e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned ExtraWidth = StWidth - RoundWidth; 14137e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(ExtraWidth < RoundWidth); 14147e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 14157e857201f387d004571e6058e2ea709163500f38Duncan Sands "Store size not an integral number of bytes!"); 141683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT RoundVT = MVT::getIntegerVT(RoundWidth); 141783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT ExtraVT = MVT::getIntegerVT(ExtraWidth); 1418475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 14197e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned IncrementSize; 14207e857201f387d004571e6058e2ea709163500f38Duncan Sands 14217e857201f387d004571e6058e2ea709163500f38Duncan Sands if (TLI.isLittleEndian()) { 14227e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 X, TRUNCSTORE@+2:i8 (srl X, 16) 14237e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the bottom RoundWidth bits. 1424ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14257e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset, RoundVT, 14267e857201f387d004571e6058e2ea709163500f38Duncan Sands isVolatile, Alignment); 14277e857201f387d004571e6058e2ea709163500f38Duncan Sands 14287e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14297e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1430ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14317e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1432ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 14337e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(RoundWidth, TLI.getShiftAmountTy())); 1434ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), 14357e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset + IncrementSize, ExtraVT, isVolatile, 14367e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 14377e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 14387e857201f387d004571e6058e2ea709163500f38Duncan Sands // Big endian - avoid unaligned stores. 14397e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 (srl X, 8), TRUNCSTORE@+2:i8 X 14407e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the top RoundWidth bits. 1441ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 14427e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy())); 1443ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), 1444ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen SVOffset, RoundVT, isVolatile, Alignment); 14457e857201f387d004571e6058e2ea709163500f38Duncan Sands 14467e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14477e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1448ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14497e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1450ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14517e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset + IncrementSize, ExtraVT, isVolatile, 14527e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 14537e857201f387d004571e6058e2ea709163500f38Duncan Sands } 1454c7029805ef35ce9805931067b841e6af11db382eChris Lattner 14557e857201f387d004571e6058e2ea709163500f38Duncan Sands // The order of the stores doesn't matter. 1456ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 14577e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 14587e857201f387d004571e6058e2ea709163500f38Duncan Sands if (Tmp1 != ST->getChain() || Tmp3 != ST->getValue() || 14597e857201f387d004571e6058e2ea709163500f38Duncan Sands Tmp2 != ST->getBasePtr()) 14607e857201f387d004571e6058e2ea709163500f38Duncan Sands Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2, 14617e857201f387d004571e6058e2ea709163500f38Duncan Sands ST->getOffset()); 14627e857201f387d004571e6058e2ea709163500f38Duncan Sands 14637e857201f387d004571e6058e2ea709163500f38Duncan Sands switch (TLI.getTruncStoreAction(ST->getValue().getValueType(), StVT)) { 1464c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("This action is not supported yet!"); 14657e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Legal: 14667e857201f387d004571e6058e2ea709163500f38Duncan Sands // If this is an unaligned store and the target doesn't support it, 14677e857201f387d004571e6058e2ea709163500f38Duncan Sands // expand it. 14687e857201f387d004571e6058e2ea709163500f38Duncan Sands if (!TLI.allowsUnalignedMemoryAccesses()) { 14697e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned ABIAlignment = TLI.getTargetData()-> 1470debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson getABITypeAlignment(ST->getMemoryVT().getTypeForMVT()); 14717e857201f387d004571e6058e2ea709163500f38Duncan Sands if (ST->getAlignment() < ABIAlignment) 1472ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), DAG, 14737e857201f387d004571e6058e2ea709163500f38Duncan Sands TLI); 14747e857201f387d004571e6058e2ea709163500f38Duncan Sands } 14757e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 14767e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Custom: 14777e857201f387d004571e6058e2ea709163500f38Duncan Sands Result = TLI.LowerOperation(Result, DAG); 14787e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 14797e857201f387d004571e6058e2ea709163500f38Duncan Sands case Expand: 14807e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i16 i32 -> STORE i16 14817e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(isTypeLegal(StVT) && "Do not know how to expand this store!"); 1482ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getNode(ISD::TRUNCATE, dl, StVT, Tmp3); 1483ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 1484ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen SVOffset, isVolatile, Alignment); 14857e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 1486f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 14878b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 14883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 14893e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 1490f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 149145b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 14924ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner assert(Result.getValueType() == Op.getValueType() && 14934ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner "Bad legalization!"); 1494fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1495456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner // Make sure that the generated code is itself legal. 1496456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner if (Result != Op) 1497456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner Result = LegalizeOp(Result); 14983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 149945982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 150045982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 150145982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner AddLegalizedOperand(Op, Result); 15023e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return Result; 15033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 15043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 15053d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli FriedmanSDValue SelectionDAGLegalize::ExpandExtractFromVectorThroughStack(SDValue Op) { 15063d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Vec = Op.getOperand(0); 15073d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Idx = Op.getOperand(1); 15083d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DebugLoc dl = Op.getDebugLoc(); 15093d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Store the value to a temporary stack slot, then LOAD the returned part. 15103d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue StackPtr = DAG.CreateStackTemporary(Vec.getValueType()); 15113d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Vec, StackPtr, NULL, 0); 15123d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15133d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Add the offset to the index. 15142a35b1c54ba55a917e01e0043efcf67e20505953Eli Friedman unsigned EltSize = 15152a35b1c54ba55a917e01e0043efcf67e20505953Eli Friedman Vec.getValueType().getVectorElementType().getSizeInBits()/8; 15163d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::MUL, dl, Idx.getValueType(), Idx, 15173d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DAG.getConstant(EltSize, Idx.getValueType())); 15183d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15193d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman if (Idx.getValueType().bitsGT(TLI.getPointerTy())) 15203d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::TRUNCATE, dl, TLI.getPointerTy(), Idx); 15213d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman else 15223d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::ZERO_EXTEND, dl, TLI.getPointerTy(), Idx); 15233d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15243d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman StackPtr = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, StackPtr); 15253d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 1526c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman if (Op.getValueType().isVector()) 1527c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman return DAG.getLoad(Op.getValueType(), dl, Ch, StackPtr, NULL, 0); 1528c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman else 1529c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman return DAG.getExtLoad(ISD::EXTLOAD, dl, Op.getValueType(), Ch, StackPtr, 1530c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman NULL, 0, Vec.getValueType().getVectorElementType()); 15313d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman} 15323d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15337ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::ExpandVectorBuildThroughStack(SDNode* Node) { 15347ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We can't handle this case efficiently. Allocate a sufficiently 15357ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // aligned object on the stack, store each element into it, then load 15367ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // the result as a vector. 15377ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Create the stack frame object. 15387ef3d178660b82d1571757e49f44b004d772a116Eli Friedman MVT VT = Node->getValueType(0); 15397ef3d178660b82d1571757e49f44b004d772a116Eli Friedman MVT OpVT = Node->getOperand(0).getValueType(); 15407ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15417ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue FIPtr = DAG.CreateStackTemporary(VT); 15427ef3d178660b82d1571757e49f44b004d772a116Eli Friedman int FI = cast<FrameIndexSDNode>(FIPtr.getNode())->getIndex(); 15437ef3d178660b82d1571757e49f44b004d772a116Eli Friedman const Value *SV = PseudoSourceValue::getFixedStack(FI); 15447ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15457ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Emit a store of each element to the stack slot. 15467ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SmallVector<SDValue, 8> Stores; 15477ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned TypeByteSize = OpVT.getSizeInBits() / 8; 15487ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Store (in the right endianness) the elements to memory. 15497ef3d178660b82d1571757e49f44b004d772a116Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 15507ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Ignore undef elements. 15517ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (Node->getOperand(i).getOpcode() == ISD::UNDEF) continue; 15527ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15537ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Offset = TypeByteSize*i; 15547ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15557ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Idx = DAG.getConstant(Offset, FIPtr.getValueType()); 15567ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Idx = DAG.getNode(ISD::ADD, dl, FIPtr.getValueType(), FIPtr, Idx); 15577ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15587ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Stores.push_back(DAG.getStore(DAG.getEntryNode(), dl, Node->getOperand(i), 15597ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Idx, SV, Offset)); 15607ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 15617ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15627ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue StoreChain; 15637ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (!Stores.empty()) // Not all undef elements? 15647ef3d178660b82d1571757e49f44b004d772a116Eli Friedman StoreChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 15657ef3d178660b82d1571757e49f44b004d772a116Eli Friedman &Stores[0], Stores.size()); 15667ef3d178660b82d1571757e49f44b004d772a116Eli Friedman else 15677ef3d178660b82d1571757e49f44b004d772a116Eli Friedman StoreChain = DAG.getEntryNode(); 15687ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15697ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Result is a load from the stack slot. 15707ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getLoad(VT, dl, StoreChain, FIPtr, SV, 0); 15717ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 15727ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15734bc8c718218159fe410462f6e3670e7cb76c0c04Eli FriedmanSDValue SelectionDAGLegalize::ExpandFCOPYSIGN(SDNode* Node) { 15744bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = Node->getOperand(0); 15764bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = Node->getOperand(1); 15774bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert((Tmp2.getValueType() == MVT::f32 || 15784bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp2.getValueType() == MVT::f64) && 15794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman "Ugly special-cased code!"); 15804bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Get the sign bit of the RHS. 15814bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignBit; 15824bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman MVT IVT = Tmp2.getValueType() == MVT::f64 ? MVT::i64 : MVT::i32; 15834bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (isTypeLegal(IVT)) { 15844bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = DAG.getNode(ISD::BIT_CONVERT, dl, IVT, Tmp2); 15854bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else { 15864bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert(isTypeLegal(TLI.getPointerTy()) && 15874bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman (TLI.getPointerTy() == MVT::i32 || 15884bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getPointerTy() == MVT::i64) && 15894bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman "Legal type for load?!"); 15904bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue StackPtr = DAG.CreateStackTemporary(Tmp2.getValueType()); 15914bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue StorePtr = StackPtr, LoadPtr = StackPtr; 15924bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Ch = 15934bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getStore(DAG.getEntryNode(), dl, Tmp2, StorePtr, NULL, 0); 15944bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Tmp2.getValueType() == MVT::f64 && TLI.isLittleEndian()) 15954bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LoadPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), 15964bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LoadPtr, DAG.getIntPtrConstant(4)); 15974bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = DAG.getExtLoad(ISD::SEXTLOAD, dl, TLI.getPointerTy(), 15984bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Ch, LoadPtr, NULL, 0, MVT::i32); 15994bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16004bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = 16014bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getSetCC(dl, TLI.getSetCCResultType(SignBit.getValueType()), 16024bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit, DAG.getConstant(0, SignBit.getValueType()), 16034bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETLT); 16044bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Get the absolute value of the result. 16054bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue AbsVal = DAG.getNode(ISD::FABS, dl, Tmp1.getValueType(), Tmp1); 16064bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Select between the nabs and abs value based on the sign bit of 16074bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // the input. 16084bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getNode(ISD::SELECT, dl, AbsVal.getValueType(), SignBit, 16094bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getNode(ISD::FNEG, dl, AbsVal.getValueType(), AbsVal), 16104bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman AbsVal); 16114bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16124bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16134bc8c718218159fe410462f6e3670e7cb76c0c04Eli FriedmanSDValue SelectionDAGLegalize::ExpandDBG_STOPPOINT(SDNode* Node) { 16144bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 16154bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DwarfWriter *DW = DAG.getDwarfWriter(); 16164bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman bool useDEBUG_LOC = TLI.isOperationLegalOrCustom(ISD::DEBUG_LOC, 16174bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman MVT::Other); 16184bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman bool useLABEL = TLI.isOperationLegalOrCustom(ISD::DBG_LABEL, MVT::Other); 16194bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16204bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman const DbgStopPointSDNode *DSP = cast<DbgStopPointSDNode>(Node); 16214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman GlobalVariable *CU_GV = cast<GlobalVariable>(DSP->getCompileUnit()); 16224bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (DW && (useDEBUG_LOC || useLABEL) && !CU_GV->isDeclaration()) { 16234bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DICompileUnit CU(cast<GlobalVariable>(DSP->getCompileUnit())); 16244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16254bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Line = DSP->getLine(); 16264bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Col = DSP->getColumn(); 16274bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16284bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (OptLevel == CodeGenOpt::None) { 16294bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // A bit self-referential to have DebugLoc on Debug_Loc nodes, but it 16304bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // won't hurt anything. 16314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (useDEBUG_LOC) { 16324bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getNode(ISD::DEBUG_LOC, dl, MVT::Other, Node->getOperand(0), 16334bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getConstant(Line, MVT::i32), 16344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getConstant(Col, MVT::i32), 16354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getSrcValue(CU.getGV())); 16364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else { 16374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned ID = DW->RecordSourceLine(Line, Col, CU); 16384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getLabel(ISD::DBG_LABEL, dl, Node->getOperand(0), ID); 16394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return Node->getOperand(0); 16434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16444bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedmanvoid SelectionDAGLegalize::ExpandDYNAMIC_STACKALLOC(SDNode* Node, 16464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results) { 16474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned SPReg = TLI.getStackPointerRegisterToSaveRestore(); 16484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert(SPReg && "Target cannot require DYNAMIC_STACKALLOC expansion and" 16494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman " not tell us which reg is the stack pointer!"); 16504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 16514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman MVT VT = Node->getValueType(0); 16524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = SDValue(Node, 0); 16534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = SDValue(Node, 1); 16544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp3 = Node->getOperand(2); 16554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Tmp1.getOperand(0); 16564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Chain the dynamic stack allocation so that it doesn't modify the stack 16584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // pointer when other instructions are using the stack. 16594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(0, true)); 16604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Size = Tmp2.getOperand(1); 16624bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SP = DAG.getCopyFromReg(Chain, dl, SPReg, VT); 16634bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = SP.getValue(1); 16644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Align = cast<ConstantSDNode>(Tmp3)->getZExtValue(); 16654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned StackAlign = 16664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getTargetMachine().getFrameInfo()->getStackAlignment(); 16674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Align > StackAlign) 16684bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SP = DAG.getNode(ISD::AND, dl, VT, SP, 16694bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getConstant(-(uint64_t)Align, VT)); 16704bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, SP, Size); // Value 16714bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCopyToReg(Chain, dl, SPReg, Tmp1); // Output chain 16724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp2 = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(0, true), 16744bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getIntPtrConstant(0, true), SDValue()); 16754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16764bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 16774bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp2); 16784bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16807f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// LegalizeSetCCCondCode - Legalize a SETCC with given LHS and RHS and 16817f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// condition code CC on the current target. This routine assumes LHS and rHS 16827f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// have already been legalized by LegalizeSetCCOperands. It expands SETCC with 16837f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// illegal condition code into AND / OR of multiple SETCC values. 16847f042681764c6f8eae22781d8b4cb4c218a86b76Evan Chengvoid SelectionDAGLegalize::LegalizeSetCCCondCode(MVT VT, 16857f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng SDValue &LHS, SDValue &RHS, 1686bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue &CC, 1687bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl) { 16887f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng MVT OpVT = LHS.getValueType(); 16897f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CCCode = cast<CondCodeSDNode>(CC)->get(); 16907f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (TLI.getCondCodeAction(CCCode, OpVT)) { 1691c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unknown condition code action!"); 16927f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Legal: 16937f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // Nothing to do. 16947f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 16957f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Expand: { 16967f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CC1 = ISD::SETCC_INVALID, CC2 = ISD::SETCC_INVALID; 16977f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng unsigned Opc = 0; 16987f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (CCCode) { 1699c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Don't know how to expand this condition!"); 1700e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETO; Opc = ISD::AND; break; 1701e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGT: CC1 = ISD::SETGT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1702e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGE: CC1 = ISD::SETGE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1703e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLT: CC1 = ISD::SETLT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1704e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLE: CC1 = ISD::SETLE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1705e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETONE: CC1 = ISD::SETNE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1706e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1707e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGT: CC1 = ISD::SETGT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1708e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGE: CC1 = ISD::SETGE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1709e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULT: CC1 = ISD::SETLT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1710e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULE: CC1 = ISD::SETLE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1711e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUNE: CC1 = ISD::SETNE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 17127f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // FIXME: Implement more expansions. 17137f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17147f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 1715bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC1 = DAG.getSetCC(dl, VT, LHS, RHS, CC1); 1716bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC2 = DAG.getSetCC(dl, VT, LHS, RHS, CC2); 1717bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen LHS = DAG.getNode(Opc, dl, VT, SetCC1, SetCC2); 17187f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng RHS = SDValue(); 17197f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng CC = SDValue(); 17207f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 17217f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17227f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17237f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng} 17247f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 17251401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// EmitStackConvert - Emit a store/load combination to the stack. This stores 17261401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// SrcOp to a stack slot of type SlotVT, truncating it if needed. It then does 17271401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// a load from the stack slot to DestVT, extending it if needed. 17281401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// The resultant code need not be legal. 1729475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::EmitStackConvert(SDValue SrcOp, 1730475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT SlotVT, 17318a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen MVT DestVT, 17328a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 173335481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Create the stack frame object. 1734ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson unsigned SrcAlign = 1735ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getTargetData()->getPrefTypeAlignment(SrcOp.getValueType(). 1736debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson getTypeForMVT()); 1737475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FIPtr = DAG.CreateStackTemporary(SlotVT, SrcAlign); 1738fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1739bbbbb9c3dd4160990f856854d16a3beaead1f354Dan Gohman FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(FIPtr); 174069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman int SPFI = StackPtrFI->getIndex(); 174115b3830bcda4f9958abf1c65e6e1c64c5cbb484dDan Gohman const Value *SV = PseudoSourceValue::getFixedStack(SPFI); 174215b3830bcda4f9958abf1c65e6e1c64c5cbb484dDan Gohman 174383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SrcSize = SrcOp.getValueType().getSizeInBits(); 174483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SlotSize = SlotVT.getSizeInBits(); 174583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned DestSize = DestVT.getSizeInBits(); 1746ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson unsigned DestAlign = 1747debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson TLI.getTargetData()->getPrefTypeAlignment(DestVT.getTypeForMVT()); 1748fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17491401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // Emit a store to the stack slot. Use a truncstore if the input value is 17501401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // later than DestVT. 1751475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store; 1752fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17531401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SrcSize > SlotSize) 17548a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getTruncStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 175515b3830bcda4f9958abf1c65e6e1c64c5cbb484dDan Gohman SV, 0, SlotVT, false, SrcAlign); 17561401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner else { 17571401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SrcSize == SlotSize && "Invalid store"); 17588a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 175915b3830bcda4f9958abf1c65e6e1c64c5cbb484dDan Gohman SV, 0, false, SrcAlign); 17601401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner } 1761fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 176235481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Result is a load from the stack slot. 17631401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SlotSize == DestSize) 17648a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(DestVT, dl, Store, FIPtr, SV, 0, false, DestAlign); 1765fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17661401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SlotSize < DestSize && "Unknown extension!"); 17678a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, Store, FIPtr, SV, 0, SlotVT, 1768364d73ddab43b699ab90240f11b7a2eb5cf69bd8Mon P Wang false, DestAlign); 176935481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner} 177035481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner 1771475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandSCALAR_TO_VECTOR(SDNode *Node) { 17728a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl = Node->getDebugLoc(); 17734352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // Create a vector sized/aligned stack slot, store the value to element #0, 17744352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // then load the whole vector back out. 1775475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(Node->getValueType(0)); 177669de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 1777bbbbb9c3dd4160990f856854d16a3beaead1f354Dan Gohman FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(StackPtr); 177869de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman int SPFI = StackPtrFI->getIndex(); 177969de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 1780b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands SDValue Ch = DAG.getTruncStore(DAG.getEntryNode(), dl, Node->getOperand(0), 1781b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands StackPtr, 1782b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands PseudoSourceValue::getFixedStack(SPFI), 0, 1783b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands Node->getValueType(0).getVectorElementType()); 17848a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(Node->getValueType(0), dl, Ch, StackPtr, 1785a54cf176613f9ae8301519a61b8935652c0fb8aeDan Gohman PseudoSourceValue::getFixedStack(SPFI), 0); 17864352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 17874352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 17884352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 1789ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner/// ExpandBUILD_VECTOR - Expand a BUILD_VECTOR node on targets that don't 179007a96765daedf180a7102d39fe56c499878312b7Dan Gohman/// support the operation, but do support the resultant vector type. 1791475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandBUILD_VECTOR(SDNode *Node) { 179226cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson unsigned NumElems = Node->getNumOperands(); 17937a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Value1, Value2; 179426cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson DebugLoc dl = Node->getDebugLoc(); 179526cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson MVT VT = Node->getValueType(0); 17967a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman MVT OpVT = Node->getOperand(0).getValueType(); 179726cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson MVT EltVT = VT.getVectorElementType(); 1798fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1799fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // If the only non-undef value is the low element, turn this into a 180087100e0b83b808757bf44dabecd1d1048255d1adChris Lattner // SCALAR_TO_VECTOR node. If this is { X, X, X, X }, determine X. 1801ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner bool isOnlyLowElement = true; 18027a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman bool MoreThanTwoValues = false; 18032eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner bool isConstant = true; 18047a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 1805475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue V = Node->getOperand(i); 18067a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 18077a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 18087a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (i > 0) 1809ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner isOnlyLowElement = false; 18107a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!isa<ConstantFPSDNode>(V) && !isa<ConstantSDNode>(V)) 18112eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner isConstant = false; 18127a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 18137a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) { 18147a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value1 = V; 18157a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (!Value2.getNode()) { 18167a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V != Value1) 18177a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value2 = V; 18187a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (V != Value1 && V != Value2) { 18197a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman MoreThanTwoValues = true; 18207a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 1821ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1822fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18237a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) 18247a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getUNDEF(VT); 18257a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 18267a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (isOnlyLowElement) 182726cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson return DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Node->getOperand(0)); 1828fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18292eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // If all elements are constants, create a load from the constant pool. 1830ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner if (isConstant) { 1831ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner std::vector<Constant*> CV; 1832033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng for (unsigned i = 0, e = NumElems; i != e; ++i) { 1833fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel if (ConstantFPSDNode *V = 1834ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner dyn_cast<ConstantFPSDNode>(Node->getOperand(i))) { 18354fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman CV.push_back(const_cast<ConstantFP *>(V->getConstantFPValue())); 1836fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel } else if (ConstantSDNode *V = 1837ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson dyn_cast<ConstantSDNode>(Node->getOperand(i))) { 18384fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman CV.push_back(const_cast<ConstantInt *>(V->getConstantIntValue())); 1839ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } else { 1840ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner assert(Node->getOperand(i).getOpcode() == ISD::UNDEF); 1841debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson const Type *OpNTy = OpVT.getTypeForMVT(); 18429e9a0d5fc26878e51a58a8b57900fcbf952c2691Owen Anderson CV.push_back(UndefValue::get(OpNTy)); 1843ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1844ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1845af7ec975870f92245f1f1484ac80a1e2db6a0afaOwen Anderson Constant *CP = ConstantVector::get(CV); 1846475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(CP, TLI.getPointerTy()); 18471606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 18488a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(VT, dl, DAG.getEntryNode(), CPIdx, 184950284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, 185050284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman false, Alignment); 1851ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1852fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18537a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!MoreThanTwoValues) { 18547a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SmallVector<int, 8> ShuffleVec(NumElems, -1); 18557a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 18567a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue V = Node->getOperand(i); 18577a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 18587a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 18597a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman ShuffleVec[i] = V == Value1 ? 0 : NumElems; 18607a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 18617a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (TLI.isShuffleMaskLegal(ShuffleVec, Node->getValueType(0))) { 18622eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Get the splatted value into the low element of a vector register. 18637a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec1 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value1); 18647a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec2; 18657a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (Value2.getNode()) 18667a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value2); 18677a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman else 18687a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getUNDEF(VT); 1869fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18702eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Return shuffle(LowValVec, undef, <0,0,0,0>) 18717a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getVectorShuffle(VT, dl, Vec1, Vec2, ShuffleVec.data()); 1872033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1873033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1874fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18757ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, we can't handle this case efficiently. 18767ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return ExpandVectorBuildThroughStack(Node); 1877ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner} 1878ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner 187977e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// ExpandLibCall - Expand a node into a call to a libcall. If the result value 188077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// does not fit into a register, return the lo part and set the hi part to the 188177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// by-reg argument. If it does fit into a single register, return the result 188277e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// and leave the Hi part unset. 1883475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, 188447b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman bool isSigned) { 18856831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "Cannot overlap legalization of calls!"); 1886fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // The input chain to this libcall is the entry node of the function. 18876831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalizing the call will automatically add the previous call to the 18886831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // dependence. 1889475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InChain = DAG.getEntryNode(); 1890fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 189177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 189247857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer TargetLowering::ArgListEntry Entry; 189377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 189483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT ArgVT = Node->getOperand(i).getValueType(); 1895debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson const Type *ArgTy = ArgVT.getTypeForMVT(); 1896fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Entry.Node = Node->getOperand(i); Entry.Ty = ArgTy; 1897d0b82b301d700217a716526f9329bb031e0d6578Anton Korobeynikov Entry.isSExt = isSigned; 189800fee65fd21f9615d1a604b8b7d42cd16a3f6b47Duncan Sands Entry.isZExt = !isSigned; 189947857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer Args.push_back(Entry); 190077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 1901056292fd738924f3f7703725d8f630983794b5a5Bill Wendling SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 19020c39719bfc7d0b3e61fbd55e1115184a1d5f6ae7Mon P Wang TLI.getPointerTy()); 1903edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 19040d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Splice the libcall in wherever FindInputOutputChains tells us to. 1905debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson const Type *RetTy = Node->getValueType(0).getTypeForMVT(); 1906ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson std::pair<SDValue, SDValue> CallInfo = 190786098bd6a63d2cdf0c9be9ef3151bd2728281fd7Dale Johannesen TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false, 19086b61cd185eeb90bec93f042535594132ae1f0f41Tilmann Scheller 0, CallingConv::C, false, Callee, Args, DAG, 19097d2ad624fa749a6d3edac0d94e9c107989c16304Dale Johannesen Node->getDebugLoc()); 19100d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 19116831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call sequence, starting with the chain. This will advance 19126831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // the LastCALLSEQ_END to the legalized version of the CALLSEQ_END node that 19136831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // was added by LowerCallTo (guaranteeing proper serialization of calls). 19146831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(CallInfo.second); 191574807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman return CallInfo.first; 191622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 191722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 1918f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandFPLibCall(SDNode* Node, 1919f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F32, 1920f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, 1921f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F80, 1922f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128) { 1923f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 1924f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman switch (Node->getValueType(0).getSimpleVT()) { 1925c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unexpected request for libcall!"); 1926f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case MVT::f32: LC = Call_F32; break; 1927f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case MVT::f64: LC = Call_F64; break; 1928f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case MVT::f80: LC = Call_F80; break; 1929f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case MVT::ppcf128: LC = Call_PPCF128; break; 1930f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 1931f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, false); 1932f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 1933f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 1934f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandIntLibCall(SDNode* Node, bool isSigned, 1935f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I16, 1936f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I32, 1937f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I64, 1938f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128) { 1939f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 1940f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman switch (Node->getValueType(0).getSimpleVT()) { 1941c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unexpected request for libcall!"); 1942f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case MVT::i16: LC = Call_I16; break; 1943f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case MVT::i32: LC = Call_I32; break; 1944f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case MVT::i64: LC = Call_I64; break; 1945f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case MVT::i128: LC = Call_I128; break; 1946f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 1947f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, isSigned); 1948f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 1949f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 195022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandLegalINT_TO_FP - This function is responsible for legalizing a 195122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// INT_TO_FP operation of the specified operand when the target requests that 195222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we expand it. At this point, we know that the result and operand types are 195322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target. 1954475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLegalINT_TO_FP(bool isSigned, 1955475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0, 1956af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen MVT DestVT, 1957af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 195822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (Op0.getValueType() == MVT::i32) { 195922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // simple 32-bit [signed|unsigned] integer to float/double expansion 1960fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 196123594d4537fb88a963c6d6993af5027eac9bfbacChris Lattner // Get the stack frame index of a 8 byte buffer. 1962475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackSlot = DAG.CreateStackTemporary(MVT::f64); 1963fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 196422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // word offset constant for Hi/Lo address computation 1965475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue WordOff = DAG.getConstant(sizeof(int), TLI.getPointerTy()); 196622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // set up Hi and Lo (into buffer) address based on endian 1967475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = StackSlot; 1968fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Lo = DAG.getNode(ISD::ADD, dl, 1969ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getPointerTy(), StackSlot, WordOff); 1970408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner if (TLI.isLittleEndian()) 1971408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner std::swap(Hi, Lo); 1972fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 197322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // if signed map to unsigned space 1974475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0Mapped; 197522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) { 197622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // constant used to invert sign bit (signed to unsigned mapping) 1977475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue SignBit = DAG.getConstant(0x80000000u, MVT::i32); 1978af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Op0Mapped = DAG.getNode(ISD::XOR, dl, MVT::i32, Op0, SignBit); 197922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } else { 198022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Op0Mapped = Op0; 198122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 198222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the lo of the constructed double - based on integer input 1983af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Store1 = DAG.getStore(DAG.getEntryNode(), dl, 1984ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson Op0Mapped, Lo, NULL, 0); 198522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // initial hi portion of constructed double 1986475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InitialHi = DAG.getConstant(0x43300000u, MVT::i32); 198722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the hi of the constructed double - biased exponent 1988af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Store2=DAG.getStore(Store1, dl, InitialHi, Hi, NULL, 0); 198922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // load the constructed double 1990af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Load = DAG.getLoad(MVT::f64, dl, Store2, StackSlot, NULL, 0); 199122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // FP constant to bias correct the final result 1992475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Bias = DAG.getConstantFP(isSigned ? 1993ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000080000000ULL) : 1994ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000000000000ULL), 199522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner MVT::f64); 199622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // subtract the bias 1997af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Sub = DAG.getNode(ISD::FSUB, dl, MVT::f64, Load, Bias); 199822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // final result 1999475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result; 200022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // handle final rounding 200122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (DestVT == MVT::f64) { 200222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // do nothing 200322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Result = Sub; 20048e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands } else if (DestVT.bitsLT(MVT::f64)) { 2005af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_ROUND, dl, DestVT, Sub, 20060bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(0)); 20078e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands } else if (DestVT.bitsGT(MVT::f64)) { 2008af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, DestVT, Sub); 200922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 201022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Result; 201122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 201222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner assert(!isSigned && "Legalize cannot Expand SINT_TO_FP for i64 yet"); 2013af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Tmp1 = DAG.getNode(ISD::SINT_TO_FP, dl, DestVT, Op0); 201422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2015af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue SignSet = DAG.getSetCC(dl, TLI.getSetCCResultType(Op0.getValueType()), 20165480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands Op0, DAG.getConstant(0, Op0.getValueType()), 20175480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands ISD::SETLT); 2018475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Zero = DAG.getIntPtrConstant(0), Four = DAG.getIntPtrConstant(4); 2019af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue CstOffset = DAG.getNode(ISD::SELECT, dl, Zero.getValueType(), 202022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner SignSet, Four, Zero); 202122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 202222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the sign bit of the integer is set, the large number will be treated 202322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // as a negative number. To counteract this, the dynamic code adds an 202422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // offset depending on the data type. 202522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner uint64_t FF; 202683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands switch (Op0.getValueType().getSimpleVT()) { 2027c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unsupported integer type!"); 202822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case MVT::i8 : FF = 0x43800000ULL; break; // 2^8 (as a float) 202922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case MVT::i16: FF = 0x47800000ULL; break; // 2^16 (as a float) 203022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case MVT::i32: FF = 0x4F800000ULL; break; // 2^32 (as a float) 203122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case MVT::i64: FF = 0x5F800000ULL; break; // 2^64 (as a float) 203222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 203322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (TLI.isLittleEndian()) FF <<= 32; 2034eed707b1e6097aac2bb6b3d47271f6300ace7f2eOwen Anderson Constant *FudgeFactor = ConstantInt::get(Type::Int64Ty, FF); 203522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2036475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(FudgeFactor, TLI.getPointerTy()); 20371606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 2038af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen CPIdx = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), CPIdx, CstOffset); 203987a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman Alignment = std::min(Alignment, 4u); 2040475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FudgeInReg; 204122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (DestVT == MVT::f32) 2042af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen FudgeInReg = DAG.getLoad(MVT::f32, dl, DAG.getEntryNode(), CPIdx, 204350284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, 204450284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman false, Alignment); 204522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner else { 204669de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman FudgeInReg = 2047af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen LegalizeOp(DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, 204869de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman DAG.getEntryNode(), CPIdx, 20493069b8743769527ce7af6cfb6591a2f0fc2faee4Dan Gohman PseudoSourceValue::getConstantPool(), 0, 205050284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman MVT::f32, false, Alignment)); 205122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 205222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2053af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(ISD::FADD, dl, DestVT, Tmp1, FudgeInReg); 205422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 205522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 205622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalINT_TO_FP - This function is responsible for legalizing a 205722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// *INT_TO_FP operation of the specified operand when the target requests that 205822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 205922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal UINT_TO_FP or SINT_TO_FP 206022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that takes a larger input. 2061475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalINT_TO_FP(SDValue LegalOp, 2062475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT DestVT, 2063af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2064af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 206522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate *INT_TO_FP operation to use. 206683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NewInTy = LegalOp.getValueType(); 206722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 206822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 206922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 207022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 207122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 207283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands NewInTy = (MVT::SimpleValueType)(NewInTy.getSimpleVT()+1); 207383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewInTy.isInteger() && "Ran out of possibilities!"); 207422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 207522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports SINT_TO_FP of this type, use it. 20763be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::SINT_TO_FP, NewInTy)) { 20773be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::SINT_TO_FP; 20783be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 207922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 208022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) continue; 208122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 208222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports UINT_TO_FP of this type, use it. 20833be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::UINT_TO_FP, NewInTy)) { 20843be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::UINT_TO_FP; 20853be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 208622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 208722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 208822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 208922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 209022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 209122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Okay, we found the operation and type to use. Zero extend our input to the 209222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // desired type then run the operation on it. 2093af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(OpToUse, dl, DestVT, 209422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, 2095af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen dl, NewInTy, LegalOp)); 209677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 209777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 209822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalFP_TO_INT - This function is responsible for legalizing a 209922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// FP_TO_*INT operation of the specified operand when the target requests that 210022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 210122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal FP_TO_UINT or FP_TO_SINT 210222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that returns a larger result. 2103475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalFP_TO_INT(SDValue LegalOp, 2104475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT DestVT, 2105af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2106af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 210722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate FP_TO*INT operation to use. 210883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NewOutTy = DestVT; 21099c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 211022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 2111e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 211222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 211322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 211483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands NewOutTy = (MVT::SimpleValueType)(NewOutTy.getSimpleVT()+1); 211583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewOutTy.isInteger() && "Ran out of possibilities!"); 211666de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner 21173be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_SINT, NewOutTy)) { 211822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_SINT; 211922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 212022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 2121e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 21223be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_UINT, NewOutTy)) { 212322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_UINT; 212422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 2125e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner } 21260d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 212722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 2128a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner } 2129a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner 2130fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 213127a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Okay, we found the operation and type to use. 2132af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Operation = DAG.getNode(OpToUse, dl, NewOutTy, LegalOp); 2133126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 213427a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Truncate the result of the extended FP_TO_*INT operation to the desired 213527a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // size. 2136af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(ISD::TRUNCATE, dl, DestVT, Operation); 213722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 213813689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner 213922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBSWAP - Open code the operations for BSWAP of the specified operation. 214022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 21418a782a2a8c2f0c82f292d03a3f707232b0bae27bDale JohannesenSDValue SelectionDAGLegalize::ExpandBSWAP(SDValue Op, DebugLoc dl) { 214283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = Op.getValueType(); 214383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT SHVT = TLI.getShiftAmountTy(); 2144475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4, Tmp5, Tmp6, Tmp7, Tmp8; 214583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands switch (VT.getSimpleVT()) { 2146c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unhandled Expand type in BSWAP!"); 214722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case MVT::i16: 21488a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21498a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21508a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp1, Tmp2); 215122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case MVT::i32: 21528a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21538a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21548a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21558a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21568a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(0xFF0000, VT)); 21578a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(0xFF00, VT)); 21588a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 21598a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 21608a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 216122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case MVT::i64: 21628a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(56, SHVT)); 21638a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(40, SHVT)); 21648a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21658a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21668a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21678a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21688a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(40, SHVT)); 21698a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(56, SHVT)); 21708a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::AND, dl, VT, Tmp7, DAG.getConstant(255ULL<<48, VT)); 21718a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::AND, dl, VT, Tmp6, DAG.getConstant(255ULL<<40, VT)); 21728a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::AND, dl, VT, Tmp5, DAG.getConstant(255ULL<<32, VT)); 21738a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::AND, dl, VT, Tmp4, DAG.getConstant(255ULL<<24, VT)); 21748a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(255ULL<<16, VT)); 21758a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(255ULL<<8 , VT)); 21768a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp7); 21778a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::OR, dl, VT, Tmp6, Tmp5); 21788a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 21798a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 21808a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp6); 21818a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 21828a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp4); 21830d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner } 218477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 2185edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 218622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBitCount - Expand the specified bitcount instruction into operations. 218722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 2188fdc40a0a696c658d550d894ea03772e5f8af2c94Scott MichelSDValue SelectionDAGLegalize::ExpandBitCount(unsigned Opc, SDValue Op, 21898a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 219022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner switch (Opc) { 2191c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Cannot expand this yet!"); 219222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTPOP: { 219322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner static const uint64_t mask[6] = { 219422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x5555555555555555ULL, 0x3333333333333333ULL, 219522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x0F0F0F0F0F0F0F0FULL, 0x00FF00FF00FF00FFULL, 219622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x0000FFFF0000FFFFULL, 0x00000000FFFFFFFFULL 219722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner }; 219883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = Op.getValueType(); 219983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT ShVT = TLI.getShiftAmountTy(); 220083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 220122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 220222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner //x = (x & mask[i][len/8]) + (x >> (1 << i) & mask[i][len/8]) 2203b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands unsigned EltSize = VT.isVector() ? 2204b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands VT.getVectorElementType().getSizeInBits() : len; 2205b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands SDValue Tmp2 = DAG.getConstant(APInt(EltSize, mask[i]), VT); 2206475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2207fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::ADD, dl, VT, 2208e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::AND, dl, VT, Op, Tmp2), 22098a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::AND, dl, VT, 22108a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3), 22118a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2)); 221222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 221322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Op; 221422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 221522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTLZ: { 221622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we do this: 221722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 1); 221822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 2); 221922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // ... 222022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>16); 222122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>32); // for 64-bit input 222222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // return popcount(~x); 222322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // 222422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // but see also: http://www.hackersdelight.org/HDcode/nlz.cc 222583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = Op.getValueType(); 222683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT ShVT = TLI.getShiftAmountTy(); 222783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 222822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 2229475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2230fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::OR, dl, VT, Op, 2231e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3)); 223222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 22338a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Op = DAG.getNOT(dl, Op, VT); 22348a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Op); 223522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 223622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTTZ: { 223722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we use: { return popcount(~x & (x - 1)); } 223822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // unless the target has ctlz but not ctpop, in which case we use: 223922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // { return 32 - nlz(~x & (x-1)); } 224022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // see also http://www.hackersdelight.org/HDcode/ntz.cc 224183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = Op.getValueType(); 22428a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue Tmp3 = DAG.getNode(ISD::AND, dl, VT, 22438a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNOT(dl, Op, VT), 22448a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SUB, dl, VT, Op, 22457581bfa2757a3149c6d17c0fe592e5c3808aa843Bill Wendling DAG.getConstant(1, VT))); 224622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If ISD::CTLZ is legal and CTPOP isn't, then do that instead. 2247f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman if (!TLI.isOperationLegalOrCustom(ISD::CTPOP, VT) && 2248f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.isOperationLegalOrCustom(ISD::CTLZ, VT)) 22498a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::SUB, dl, VT, 225083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(VT.getSizeInBits(), VT), 22518a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::CTLZ, dl, VT, Tmp3)); 22528a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Tmp3); 225322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 225422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 225522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 2256e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 22578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::ExpandNode(SDNode *Node, 22588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 22598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 2260bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 22618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 22628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 22638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 22648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 22658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandBitCount(Node->getOpcode(), Node->getOperand(0), dl); 22668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 22678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: 22698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(ExpandBSWAP(Node->getOperand(0), dl)); 22708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 22728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 22738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 22748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, Node->getValueType(0))); 22758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 22778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(1, Node->getValueType(0))); 22788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 22808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::DECLARE: 22818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::DBG_LABEL: 22828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_LABEL: 22838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::PREFETCH: 22848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MEMBARRIER: 22858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAEND: 22868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(0)); 22878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22884bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::DBG_STOPPOINT: 22894bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(ExpandDBG_STOPPOINT(Node)); 22904bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 22914bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::DYNAMIC_STACKALLOC: 22924bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ExpandDYNAMIC_STACKALLOC(Node, Results); 22934bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 22948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 22958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0; i < Node->getNumValues(); i++) 22968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(i)); 22978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UNDEF: { 22998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT VT = Node->getValueType(0); 23008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (VT.isInteger()) 23018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, VT)); 23028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else if (VT.isFloatingPoint()) 23038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstantFP(0, VT)); 23048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 2305c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Unknown value type!"); 23068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAP: { 23098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // If this operation is not supported, lower it to 'abort()' call 23108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::ArgListTy Args; 23118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman std::pair<SDValue, SDValue> CallResult = 23128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TLI.LowerCallTo(Node->getOperand(0), Type::VoidTy, 23136b61cd185eeb90bec93f042535594132ae1f0f41Tilmann Scheller false, false, false, false, 0, CallingConv::C, false, 23148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getExternalSymbol("abort", TLI.getPointerTy()), 23158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Args, DAG, dl); 23168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(CallResult.second); 23178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND: 23208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BIT_CONVERT: 23218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), Node->getValueType(0), 23228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 23238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_EXTEND: 23268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), 23278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType(), 23288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 23298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 23328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: we could fall back on load/store here too for targets without 23338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // SAR. However, it is doubtful that any exist. 23348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 23358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman unsigned BitsDiff = Node->getValueType(0).getSizeInBits() - 23368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ExtraVT.getSizeInBits(); 23378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SDValue ShiftCst = DAG.getConstant(BitsDiff, TLI.getShiftAmountTy()); 23388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SHL, dl, Node->getValueType(0), 23398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), ShiftCst); 23408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRA, dl, Node->getValueType(0), Tmp1, ShiftCst); 23418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: { 23458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // The only way we can lower this is to turn it into a TRUNCSTORE, 23468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // EXTLOAD pair, targetting a temporary location (a stack slot). 23478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 23488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: there is a choice here between constantly creating new stack 23498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // slots and always reusing the same one. We currently always create 23508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // new ones, as reuse may inhibit scheduling. 23518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 23528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), ExtraVT, 23538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 23548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 23588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 23598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandLegalINT_TO_FP(Node->getOpcode() == ISD::SINT_TO_FP, 23608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), Node->getValueType(0), dl); 23618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: { 23648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SDValue True, False; 23658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT VT = Node->getOperand(0).getValueType(); 23668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT NVT = Node->getValueType(0); 23678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const uint64_t zero[] = {0, 0}; 23688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APFloat apf = APFloat(APInt(VT.getSizeInBits(), 2, zero)); 23698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APInt x = APInt::getSignBit(NVT.getSizeInBits()); 23708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman (void)apf.convertFromAPInt(x, false, APFloat::rmNearestTiesToEven); 23718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getConstantFP(apf, VT); 23728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), 23738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), 23748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, ISD::SETLT); 23758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman True = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, Node->getOperand(0)); 23768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman False = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, 23778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getNode(ISD::FSUB, dl, VT, 23788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), Tmp1)); 23798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman False = DAG.getNode(ISD::XOR, dl, NVT, False, 23808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(x, NVT)); 23818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, True, False); 23828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 2385509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VAARG: { 2386509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman const Value *V = cast<SrcValueSDNode>(Node->getOperand(2))->getValue(); 2387509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman MVT VT = Node->getValueType(0); 2388509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2389509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 2390509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SDValue VAList = DAG.getLoad(TLI.getPointerTy(), dl, Tmp1, Tmp2, V, 0); 2391509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Increment the pointer, VAList, to the next vaarg 2392509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList, 2393509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(TLI.getTargetData()-> 2394debcb01b0f0a15f568ca69e8f288fade4bfc7297Owen Anderson getTypeAllocSize(VT.getTypeForMVT()), 2395509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TLI.getPointerTy())); 2396509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Store the incremented VAList to the legalized pointer 2397509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getStore(VAList.getValue(1), dl, Tmp3, Tmp2, V, 0); 2398509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Load the actual argument out of the pointer VAList 2399509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(DAG.getLoad(VT, dl, Tmp3, VAList, NULL, 0)); 2400509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Results[0].getValue(1)); 2401509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2402509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 24038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VACOPY: { 24048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This defaults to loading a pointer from the input and storing it to the 24058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // output, returning the chain. 24068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VD = cast<SrcValueSDNode>(Node->getOperand(3))->getValue(); 24078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VS = cast<SrcValueSDNode>(Node->getOperand(4))->getValue(); 24088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getLoad(TLI.getPointerTy(), dl, Node->getOperand(0), 24098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(2), VS, 0); 24108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getStore(Tmp1.getValue(1), dl, Tmp1, Node->getOperand(1), VD, 0); 24118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 24128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 24158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOperand(0).getValueType().getVectorNumElements() == 1) 24168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This must be an access of the only element. Return it. 24178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, Node->getValueType(0), 24188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 24198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 24208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandExtractFromVectorThroughStack(SDValue(Node, 0)); 24218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 24228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_SUBVECTOR: 24248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(ExpandExtractFromVectorThroughStack(SDValue(Node, 0))); 24258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 2426509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::CONCAT_VECTORS: { 24275257106c4d396b5d932f7b282c3ba255c4605195Eli Friedman Results.push_back(ExpandVectorBuildThroughStack(Node)); 2428509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2429509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 24308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SCALAR_TO_VECTOR: 24318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(ExpandSCALAR_TO_VECTOR(Node)); 24328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24333f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INSERT_VECTOR_ELT: 24343f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(ExpandINSERT_VECTOR_ELT(Node->getOperand(0), 24353f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getOperand(1), 24363f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getOperand(2), dl)); 24373f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 2438509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 2439509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 2440509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 2441509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 2442509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman MVT VT = Node->getValueType(0); 2443509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman MVT EltVT = VT.getVectorElementType(); 2444509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned NumElems = VT.getVectorNumElements(); 2445509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<SDValue, 8> Ops; 2446509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman for (unsigned i = 0; i != NumElems; ++i) { 2447509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Mask[i] < 0) { 2448509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getUNDEF(EltVT)); 2449509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman continue; 2450509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2451509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned Idx = Mask[i]; 2452509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Idx < NumElems) 2453509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2454509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Node->getOperand(0), 2455509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(Idx))); 2456509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 2457509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2458509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Node->getOperand(1), 2459509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(Idx - NumElems))); 2460509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2461509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &Ops[0], Ops.size()); 2462509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 2463509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2464509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 24658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: { 24668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT OpTy = Node->getOperand(0).getValueType(); 24678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (cast<ConstantSDNode>(Node->getOperand(1))->getZExtValue()) { 24688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 1 -> Hi 24698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRL, dl, OpTy, Node->getOperand(0), 24708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OpTy.getSizeInBits()/2, 24718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TLI.getShiftAmountTy())); 24728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), Tmp1); 24738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 24748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 0 -> Lo 24758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), 24768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 24778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 24798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24813f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKSAVE: 24823f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // Expand to CopyFromReg if the target set 24833f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // StackPointerRegisterToSaveRestore. 24843f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 24853f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, SP, 24863f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getValueType(0))); 24873f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Results[0].getValue(1)); 24883f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } else { 24893f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(DAG.getUNDEF(Node->getValueType(0))); 24903f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Node->getOperand(0)); 24913f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 24923f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 24933f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKRESTORE: 24943f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // Expand to CopyToReg if the target set 24953f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // StackPointerRegisterToSaveRestore. 24963f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 24973f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(DAG.getCopyToReg(Node->getOperand(0), dl, SP, 24983f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getOperand(1))); 24993f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } else { 25003f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Node->getOperand(0)); 25013f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 25023f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 25034bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::FCOPYSIGN: 25044bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(ExpandFCOPYSIGN(Node)); 25054bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 2506f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEG: 2507f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FNEG(X) -> Y = SUB -0.0, X 2508f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getConstantFP(-0.0, Node->getValueType(0)); 2509f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(ISD::FSUB, dl, Node->getValueType(0), Tmp1, 2510f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Node->getOperand(0)); 2511f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2512f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2513f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FABS: { 2514f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FABS(X) -> Y = (X >u 0.0) ? X : fneg(X). 2515f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman MVT VT = Node->getValueType(0); 2516f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = Node->getOperand(0); 2517f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp2 = DAG.getConstantFP(0.0, VT); 2518f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(Tmp1.getValueType()), 2519f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1, Tmp2, ISD::SETUGT); 2520f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp3 = DAG.getNode(ISD::FNEG, dl, VT, Tmp1); 2521f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, VT, Tmp2, Tmp1, Tmp3); 2522f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2523f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2524f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 2525f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSQRT: 2526f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::SQRT_F32, RTLIB::SQRT_F64, 2527f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::SQRT_F80, RTLIB::SQRT_PPCF128)); 2528f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2529f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSIN: 2530f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::SIN_F32, RTLIB::SIN_F64, 2531f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::SIN_F80, RTLIB::SIN_PPCF128)); 2532f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2533f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCOS: 2534f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::COS_F32, RTLIB::COS_F64, 2535f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::COS_F80, RTLIB::COS_PPCF128)); 2536f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2537f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG: 2538f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG_F32, RTLIB::LOG_F64, 2539f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::LOG_F80, RTLIB::LOG_PPCF128)); 2540f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2541f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG2: 2542f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG2_F32, RTLIB::LOG2_F64, 2543f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::LOG2_F80, RTLIB::LOG2_PPCF128)); 2544f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2545f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG10: 2546f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG10_F32, RTLIB::LOG10_F64, 2547f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::LOG10_F80, RTLIB::LOG10_PPCF128)); 2548f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2549f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP: 2550f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP_F32, RTLIB::EXP_F64, 2551f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::EXP_F80, RTLIB::EXP_PPCF128)); 2552f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2553f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP2: 2554f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP2_F32, RTLIB::EXP2_F64, 2555f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::EXP2_F80, RTLIB::EXP2_PPCF128)); 2556f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2557f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FTRUNC: 2558f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::TRUNC_F32, RTLIB::TRUNC_F64, 2559f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::TRUNC_F80, RTLIB::TRUNC_PPCF128)); 2560f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2561f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FFLOOR: 2562f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::FLOOR_F32, RTLIB::FLOOR_F64, 2563f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::FLOOR_F80, RTLIB::FLOOR_PPCF128)); 2564f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2565f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCEIL: 2566f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::CEIL_F32, RTLIB::CEIL_F64, 2567f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::CEIL_F80, RTLIB::CEIL_PPCF128)); 2568f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2569f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FRINT: 2570f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::RINT_F32, RTLIB::RINT_F64, 2571f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::RINT_F80, RTLIB::RINT_PPCF128)); 2572f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2573f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEARBYINT: 2574f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::NEARBYINT_F32, 2575f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::NEARBYINT_F64, 2576f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::NEARBYINT_F80, 2577f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::NEARBYINT_PPCF128)); 2578f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2579f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOWI: 2580f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::POWI_F32, RTLIB::POWI_F64, 2581f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::POWI_F80, RTLIB::POWI_PPCF128)); 2582f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2583f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOW: 2584f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::POW_F32, RTLIB::POW_F64, 2585f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::POW_F80, RTLIB::POW_PPCF128)); 2586f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2587f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FDIV: 2588f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::DIV_F32, RTLIB::DIV_F64, 2589f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::DIV_F80, RTLIB::DIV_PPCF128)); 2590f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2591f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FREM: 2592f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::REM_F32, RTLIB::REM_F64, 2593f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::REM_F80, RTLIB::REM_PPCF128)); 2594f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2595f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::ConstantFP: { 2596f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman ConstantFPSDNode *CFP = cast<ConstantFPSDNode>(Node); 2597f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Check to see if this FP immediate is already legal. 2598f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isLegal = false; 2599f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman for (TargetLowering::legal_fpimm_iterator I = TLI.legal_fpimm_begin(), 2600f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman E = TLI.legal_fpimm_end(); I != E; ++I) { 2601f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (CFP->isExactlyValue(*I)) { 2602f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman isLegal = true; 2603f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2604f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2605f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2606f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // If this is a legal constant, turn it into a TargetConstantFP node. 2607f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (isLegal) 2608f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(SDValue(Node, 0)); 2609f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 2610f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(ExpandConstantFP(CFP, true, DAG, TLI)); 2611f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2612f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 261326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EHSELECTION: { 261426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionSelectorRegister(); 261526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 261626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(DAG.getCopyFromReg(Node->getOperand(1), dl, Reg, 261726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getValueType(0))); 261826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 261926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 262026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 262126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EXCEPTIONADDR: { 262226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionAddressRegister(); 262326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 262426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, Reg, 262526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getValueType(0))); 262626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 262726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 262826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 262926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::SUB: { 263026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman MVT VT = Node->getValueType(0); 263126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ISD::ADD, VT) && 263226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman TLI.isOperationLegalOrCustom(ISD::XOR, VT) && 263326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "Don't know how to expand this subtraction!"); 263426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ISD::XOR, dl, VT, Node->getOperand(1), 263526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman DAG.getConstant(APInt::getAllOnesValue(VT.getSizeInBits()), VT)); 263626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ISD::ADD, dl, VT, Tmp2, DAG.getConstant(1, VT)); 263726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(DAG.getNode(ISD::ADD, dl, VT, Node->getOperand(0), Tmp1)); 263826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 263926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 2640f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UREM: 2641f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SREM: { 264226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman MVT VT = Node->getValueType(0); 264326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 2644f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SREM; 2645f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivOpc = isSigned ? ISD::SDIV : ISD::UDIV; 2646f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 2647f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(0); 2648f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp3 = Node->getOperand(1); 26493be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) { 26503be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Tmp2, Tmp3).getValue(1); 26513be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } else if (TLI.isOperationLegalOrCustom(DivOpc, VT)) { 2652f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // X % Y -> X-X/Y*Y 2653f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivOpc, dl, VT, Tmp2, Tmp3); 2654f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, VT, Tmp1, Tmp3); 2655f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, Tmp2, Tmp1); 2656f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else if (isSigned) { 2657f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = ExpandIntLibCall(Node, true, RTLIB::SREM_I16, RTLIB::SREM_I32, 2658f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::SREM_I64, RTLIB::SREM_I128); 2659f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else { 266026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = ExpandIntLibCall(Node, false, RTLIB::UREM_I16, RTLIB::UREM_I32, 266126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::UREM_I64, RTLIB::UREM_I128); 2662f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 266326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 266426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 266526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 2666f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UDIV: 2667f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SDIV: { 2668f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SDIV; 2669f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 267026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman MVT VT = Node->getValueType(0); 267126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 2672f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) 2673f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Node->getOperand(0), 2674f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(1)); 2675f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else if (isSigned) 267626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = ExpandIntLibCall(Node, true, RTLIB::SDIV_I16, RTLIB::SDIV_I32, 267726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::SDIV_I64, RTLIB::SDIV_I128); 2678f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 2679f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = ExpandIntLibCall(Node, false, RTLIB::UDIV_I16, RTLIB::UDIV_I32, 2680f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::UDIV_I64, RTLIB::UDIV_I128); 268126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 268226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 268326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 268426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHU: 268526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHS: { 268626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned ExpandOpcode = Node->getOpcode() == ISD::MULHU ? ISD::UMUL_LOHI : 268726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman ISD::SMUL_LOHI; 268826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman MVT VT = Node->getValueType(0); 268926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 269026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ExpandOpcode, VT) && 269126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "If this wasn't legal, it shouldn't have been created!"); 269226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ExpandOpcode, dl, VTs, Node->getOperand(0), 269326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getOperand(1)); 269426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1.getValue(1)); 269526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 269626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 269726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MUL: { 269826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman MVT VT = Node->getValueType(0); 269926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 270026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // See if multiply or divide can be lowered using two-result operations. 270126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // We just need the low half of the multiply; try both the signed 270226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // and unsigned forms. If the target supports both SMUL_LOHI and 270326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // UMUL_LOHI, form a preference by checking which forms of plain 270426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // MULH it supports. 270526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasSMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::SMUL_LOHI, VT); 270626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasUMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::UMUL_LOHI, VT); 270726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHS = TLI.isOperationLegalOrCustom(ISD::MULHS, VT); 270826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHU = TLI.isOperationLegalOrCustom(ISD::MULHU, VT); 270926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned OpToUse = 0; 271026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (HasSMUL_LOHI && !HasMULHS) { 271126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 271226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI && !HasMULHU) { 271326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 271426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasSMUL_LOHI) { 271526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 271626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI) { 271726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 271826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 271926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (OpToUse) { 2720f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(DAG.getNode(OpToUse, dl, VTs, Node->getOperand(0), 2721f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(1))); 272226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 272326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 272426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = ExpandIntLibCall(Node, false, RTLIB::MUL_I16, RTLIB::MUL_I32, 272526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::MUL_I64, RTLIB::MUL_I128); 272626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 272726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 272826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 27294bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SADDO: 27304bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SSUBO: { 27314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 27324bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 27334bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::SADDO ? 27344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 27354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 27364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 27374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman MVT OType = Node->getValueType(1); 27384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Zero = DAG.getConstant(0, LHS.getValueType()); 27404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // LHSSign -> LHS >= 0 27424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RHSSign -> RHS >= 0 27434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // SumSign -> Sum >= 0 27444bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 27454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Add: 27464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign == RHSSign) && (LHSSign != SumSign) 27474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Sub: 27484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign != RHSSign) && (LHSSign != SumSign) 27494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 27504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHSSign = DAG.getSetCC(dl, OType, LHS, Zero, ISD::SETGE); 27514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHSSign = DAG.getSetCC(dl, OType, RHS, Zero, ISD::SETGE); 27524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignsMatch = DAG.getSetCC(dl, OType, LHSSign, RHSSign, 27534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Node->getOpcode() == ISD::SADDO ? 27544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETEQ : ISD::SETNE); 27554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSign = DAG.getSetCC(dl, OType, Sum, Zero, ISD::SETGE); 27574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSignNE = DAG.getSetCC(dl, OType, LHSSign, SumSign, ISD::SETNE); 27584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Cmp = DAG.getNode(ISD::AND, dl, OType, SignsMatch, SumSignNE); 27604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Cmp); 27614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 27624bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 27634bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::UADDO: 27644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::USUBO: { 27654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 27664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 27674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::UADDO ? 27684bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 27694bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 27704bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 27714bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(DAG.getSetCC(dl, Node->getValueType(1), Sum, LHS, 27724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Node->getOpcode () == ISD::UADDO ? 27734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETULT : ISD::SETUGT)); 27744bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 27754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2776db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::UMULO: 2777db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::SMULO: { 2778db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman MVT VT = Node->getValueType(0); 2779db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue LHS = Node->getOperand(0); 2780db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue RHS = Node->getOperand(1); 2781db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue BottomHalf; 2782db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue TopHalf; 2783db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman static unsigned Ops[2][3] = 2784db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { { ISD::MULHU, ISD::UMUL_LOHI, ISD::ZERO_EXTEND }, 2785db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { ISD::MULHS, ISD::SMUL_LOHI, ISD::SIGN_EXTEND }}; 2786db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman bool isSigned = Node->getOpcode() == ISD::SMULO; 2787db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (TLI.isOperationLegalOrCustom(Ops[isSigned][0], VT)) { 2788db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::MUL, dl, VT, LHS, RHS); 2789db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(Ops[isSigned][0], dl, VT, LHS, RHS); 2790db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else if (TLI.isOperationLegalOrCustom(Ops[isSigned][1], VT)) { 2791db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(Ops[isSigned][1], dl, DAG.getVTList(VT, VT), LHS, 2792db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS); 2793db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = BottomHalf.getValue(1); 2794db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else if (TLI.isTypeLegal(MVT::getIntegerVT(VT.getSizeInBits() * 2))) { 2795db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman MVT WideVT = MVT::getIntegerVT(VT.getSizeInBits() * 2); 2796db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman LHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, LHS); 2797db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, RHS); 2798db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, WideVT, LHS, RHS); 2799db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 2800db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(0)); 2801db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 2802db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(1)); 2803db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else { 2804db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // FIXME: We should be able to fall back to a libcall with an illegal 2805db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // type in some cases cases. 2806db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // Also, we can fall back to a division in some cases, but that's a big 2807db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // performance hit in the general case. 2808c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Don't know how to expand this operation yet!"); 2809db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2810db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (isSigned) { 2811db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getConstant(VT.getSizeInBits() - 1, TLI.getShiftAmountTy()); 2812db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::SRA, dl, VT, BottomHalf, Tmp1); 2813db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, Tmp1, 2814db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman ISD::SETNE); 2815db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else { 2816db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, 2817db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getConstant(0, VT), ISD::SETNE); 2818db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2819db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(BottomHalf); 2820db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(TopHalf); 2821db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman break; 2822db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2823f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BUILD_PAIR: { 2824f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman MVT PairTy = Node->getValueType(0); 2825f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, PairTy, Node->getOperand(0)); 2826f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = DAG.getNode(ISD::ANY_EXTEND, dl, PairTy, Node->getOperand(1)); 2827f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = DAG.getNode(ISD::SHL, dl, PairTy, Tmp2, 2828f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(PairTy.getSizeInBits()/2, 2829f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman TLI.getShiftAmountTy())); 2830f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(DAG.getNode(ISD::OR, dl, PairTy, Tmp1, Tmp2)); 2831f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2832f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2833509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::SELECT: 2834509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2835509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 2836509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = Node->getOperand(2); 2837509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Tmp1.getOpcode() == ISD::SETCC) { 2838509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1.getOperand(0), Tmp1.getOperand(1), 2839509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, 2840509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<CondCodeSDNode>(Tmp1.getOperand(2))->get()); 2841509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } else { 2842509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1, 2843509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(0, Tmp1.getValueType()), 2844509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, ISD::SETNE); 2845509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2846509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 2847509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 28484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::BR_JT: { 28494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Node->getOperand(0); 28504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Table = Node->getOperand(1); 28514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Index = Node->getOperand(2); 28524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 28534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman MVT PTy = TLI.getPointerTy(); 28544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman MachineFunction &MF = DAG.getMachineFunction(); 28554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned EntrySize = MF.getJumpTableInfo()->getEntrySize(); 28564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Index= DAG.getNode(ISD::MUL, dl, PTy, 28574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Index, DAG.getConstant(EntrySize, PTy)); 28584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Addr = DAG.getNode(ISD::ADD, dl, PTy, Index, Table); 28594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 28604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman MVT MemVT = MVT::getIntegerVT(EntrySize * 8); 28614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LD = DAG.getExtLoad(ISD::SEXTLOAD, dl, PTy, Chain, Addr, 28624bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman PseudoSourceValue::getJumpTable(), 0, MemVT); 28634bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = LD; 28644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (TLI.getTargetMachine().getRelocationModel() == Reloc::PIC_) { 28654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // For PIC, the sequence is: 28664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // BRIND(load(Jumptable + index) + RelocBase) 28674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RelocBase can be JumpTable, GOT or some sort of global base. 28684bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = DAG.getNode(ISD::ADD, dl, PTy, Addr, 28694bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getPICJumpTableRelocBase(Table, DAG)); 28704bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 28714bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp1 = DAG.getNode(ISD::BRIND, dl, MVT::Other, LD.getValue(1), Addr); 28724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 28734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 28744bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2875f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BRCOND: 2876f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Expand brcond's setcc into its constituent parts and create a BR_CC 2877f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Node. 2878f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = Node->getOperand(0); 2879f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(1); 2880f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (Tmp2.getOpcode() == ISD::SETCC) { 2881f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, 2882f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1, Tmp2.getOperand(2), 2883f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2.getOperand(0), Tmp2.getOperand(1), 2884f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 2885f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else { 2886f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, Tmp1, 2887f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getCondCode(ISD::SETNE), Tmp2, 2888f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(0, Tmp2.getValueType()), 2889f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 2890f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2891f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(Tmp1); 2892f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2893ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 2894ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = Node->getOperand(0); 2895ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp2 = Node->getOperand(1); 2896ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp3 = Node->getOperand(2); 2897bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(Node->getValueType(0), Tmp1, Tmp2, Tmp3, dl); 2898ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 2899ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // If we expanded the SETCC into an AND/OR, return the new node 2900ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman if (Tmp2.getNode() == 0) { 2901ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 2902ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 2903ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 2904ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 2905ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // Otherwise, SETCC for the given comparison type must be completely 2906ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // illegal; expand it into a SELECT_CC. 2907ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman MVT VT = Node->getValueType(0); 2908ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, VT, Tmp1, Tmp2, 2909ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman DAG.getConstant(1, VT), DAG.getConstant(0, VT), Tmp3); 2910ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 2911ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 2912ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 2913bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::SELECT_CC: { 2914bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // LHS 2915bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(1); // RHS 2916bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(2); // True 2917bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(3); // False 2918bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue CC = Node->getOperand(4); 2919bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2920bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp1.getValueType()), 2921bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1, Tmp2, CC, dl); 2922bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2923bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp2.getNode() && "Can't legalize SELECT_CC with legal condition!"); 2924bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = DAG.getConstant(0, Tmp1.getValueType()); 2925bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman CC = DAG.getCondCode(ISD::SETNE); 2926bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, Node->getValueType(0), Tmp1, Tmp2, 2927bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Tmp4, CC); 2928bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 2929bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 2930bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 2931bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::BR_CC: { 2932bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // Chain 2933bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(2); // LHS 2934bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(3); // RHS 2935bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(1); // CC 2936bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2937bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp2.getValueType()), 2938bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2, Tmp3, Tmp4, dl); 2939bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 2940bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2941bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp3.getNode() && "Can't legalize BR_CC with legal condition!"); 2942bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = DAG.getConstant(0, Tmp2.getValueType()); 2943bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = DAG.getCondCode(ISD::SETNE); 2944bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::BR_CC, dl, Node->getValueType(0), Tmp1, Tmp4, Tmp2, 2945bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Node->getOperand(4)); 2946bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 2947bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 2948bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 29493f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GLOBAL_OFFSET_TABLE: 29503f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalAddress: 29513f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalTLSAddress: 29523f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ExternalSymbol: 29533f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ConstantPool: 29543f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::JumpTable: 29553f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_W_CHAIN: 29563f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_WO_CHAIN: 29573f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_VOID: 29583f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // FIXME: Custom lowering for these operations shouldn't return null! 29593f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 29603f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(SDValue(Node, i)); 29613f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 29628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 29648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::PromoteNode(SDNode *Node, 29658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 29668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT OVT = Node->getValueType(0); 29678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::UINT_TO_FP || 2968a64eb92fe305424ebde2e3de2b12160b8bf76047Eli Friedman Node->getOpcode() == ISD::SINT_TO_FP || 2969a64eb92fe305424ebde2e3de2b12160b8bf76047Eli Friedman Node->getOpcode() == ISD::SETCC) { 29708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT = Node->getOperand(0).getValueType(); 29718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), OVT); 29738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 2974509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SDValue Tmp1, Tmp2, Tmp3; 29758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 29768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 29778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 29788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 29798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Zero extend the argument. 29808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0)); 29818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Perform the larger operation. 29829a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1); 29838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::CTTZ) { 29848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman //if Tmp1 == sizeinbits(NVT) then Tmp1 = sizeinbits(Old VT) 29859a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), 29868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, DAG.getConstant(NVT.getSizeInBits(), NVT), 29878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ISD::SETEQ); 29888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, 29898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OVT.getSizeInBits(), NVT), Tmp1); 29908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else if (Node->getOpcode() == ISD::CTLZ) { 29918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Tmp1 = Tmp1 - (sizeinbits(NVT) - sizeinbits(Old VT)) 29928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, NVT, Tmp1, 29938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(NVT.getSizeInBits() - 29948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT.getSizeInBits(), NVT)); 29958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29969a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Results.push_back(DAG.getNode(ISD::TRUNCATE, dl, OVT, Tmp1)); 29978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 29988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: { 29998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman unsigned DiffBits = NVT.getSizeInBits() - OVT.getSizeInBits(); 30008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Tmp1); 30018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::BSWAP, dl, NVT, Tmp1); 30028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRL, dl, NVT, Tmp1, 30038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(DiffBits, TLI.getShiftAmountTy())); 30048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 30058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 30068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 30078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: 30088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_SINT: 30098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalFP_TO_INT(Node->getOperand(0), Node->getValueType(0), 30108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::FP_TO_SINT, dl); 30118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 30128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 30138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 30148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 30158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalINT_TO_FP(Node->getOperand(0), Node->getValueType(0), 30168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::SINT_TO_FP, dl); 30178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 30188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 3019f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::AND: 3020f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::OR: 3021c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::XOR: { 3022c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen unsigned ExtOp, TruncOp; 3023c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen if (OVT.isVector()) { 3024c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen ExtOp = ISD::BIT_CONVERT; 3025c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen TruncOp = ISD::BIT_CONVERT; 3026c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } else if (OVT.isInteger()) { 3027c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen ExtOp = ISD::ANY_EXTEND; 3028c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen TruncOp = ISD::TRUNCATE; 3029c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } else { 3030c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen llvm_report_error("Cannot promote logic operation"); 3031c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3032c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Promote each of the values to the new type. 3033c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 3034c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3035c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen // Perform the larger operation, then convert back 3036f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1, Tmp2); 3037c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen Results.push_back(DAG.getNode(TruncOp, dl, OVT, Tmp1)); 3038f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3039c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3040c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen case ISD::SELECT: { 3041509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned ExtOp, TruncOp; 30424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Node->getValueType(0).isVector()) { 3043509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::BIT_CONVERT; 3044509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::BIT_CONVERT; 30454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else if (Node->getValueType(0).isInteger()) { 3046509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::ANY_EXTEND; 3047509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::TRUNCATE; 3048509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } else { 3049509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::FP_EXTEND; 3050509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::FP_ROUND; 3051509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3052509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 3053509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Promote each of the values to the new type. 3054509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3055509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(2)); 3056509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Perform the larger operation, then round down. 3057509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp1, Tmp2, Tmp3); 3058509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (TruncOp != ISD::FP_ROUND) 3059509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1); 3060509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 3061509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1, 3062509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(0)); 3063509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3064509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3065c8ca3ae27b64fa785f944799a9bc133fac8f90d9Jakob Stoklund Olesen } 3066509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 3067509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 3068509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 3069509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3070509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Cast the two input vectors. 3071509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(0)); 3072509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(1)); 3073509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3074509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Convert the shuffle mask to the right # elements. 3075509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = ShuffleWithNarrowerEltType(NVT, OVT, dl, Tmp1, Tmp2, Mask); 3076509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, OVT, Tmp1); 3077509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3078509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3079509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3080ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 308178d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen unsigned ExtOp = ISD::FP_EXTEND; 308278d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen if (NVT.isInteger()) { 308378d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ISD::CondCode CCCode = 308478d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen cast<CondCodeSDNode>(Node->getOperand(2))->get(); 308578d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen ExtOp = isSignedIntSetCC(CCCode) ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND; 3086ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 308778d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp1 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(0)); 308878d12644b905dc54cf6cf984af02a49d30d29744Jakob Stoklund Olesen Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3089ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(DAG.getNode(ISD::SETCC, dl, Node->getValueType(0), 3090ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1, Tmp2, Node->getOperand(2))); 3091ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3092ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 30938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 30948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 30958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 30963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// SelectionDAG::Legalize - This is the entry point for the file. 30973e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 309898a366d547772010e94609e4584489b3e5ce0043Bill Wendlingvoid SelectionDAG::Legalize(bool TypesNeedLegalizing, 309998a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 31003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// run - This is the main entry point to this class. 31013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 31021fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(*this, OptLevel).LegalizeDAG(); 31033e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 31043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 3105