LegalizeDAG.cpp revision 9a4ba45f4cd0496c422f81e104adf6c03ebdd3ba
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" 335e46a19ec848cd4fc9649bd5170c43d9e657668cChris Lattner#include "llvm/Support/CommandLine.h" 34a4f0b3a084d120cfc5b5bb06f64b222f5cb72740Chris Lattner#include "llvm/Support/Compiler.h" 357d696d80409aad20bb5da0fc4eccab941dd371d4Torok Edwin#include "llvm/Support/ErrorHandling.h" 36dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands#include "llvm/Support/MathExtras.h" 377971514755a08ec156a1b9c0f7f05d67919c56b7Chris Lattner#include "llvm/ADT/DenseMap.h" 38f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner#include "llvm/ADT/SmallVector.h" 3900755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner#include "llvm/ADT/SmallPtrSet.h" 40033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng#include <map> 413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerusing namespace llvm; 423e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner//===----------------------------------------------------------------------===// 443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// SelectionDAGLegalize - This takes an arbitrary SelectionDAG as input and 453e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// hacks on it until the target machine can handle it. This involves 463e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating value sizes the machine cannot handle (promoting small sizes to 473e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// large sizes or splitting up large values into small values) as well as 483e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// eliminating operations the machine cannot handle. 493e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 503e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// This code also does a small amount of optimization and recognition of idioms 513e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// as part of its processing. For example, if a target does not support a 523e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 'setcc' instruction efficiently, but does support 'brcc' instruction, this 533e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// will attempt merge setcc and brc instructions into brcc's. 543e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner/// 553e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnernamespace { 56360e8200ec544a3c877ff74b48f445140ac9bbd6Chris Lattnerclass VISIBILITY_HIDDEN SelectionDAGLegalize { 573e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner TargetLowering &TLI; 583e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner SelectionDAG &DAG; 5998a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel; 603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 616831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Libcall insertion helpers. 62fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 636831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// LastCALLSEQ_END - This keeps track of the CALLSEQ_END node that has been 646831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// legalized. We use this to ensure that calls are properly serialized 656831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// against each other, including inserted libcalls. 66475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LastCALLSEQ_END; 67fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 686831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// IsLegalizingCall - This member is used *only* for purposes of providing 69fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel /// helpful assertions that a libcall isn't created while another call is 706831a815999dde4cf801e2076e66b4943964daf2Chris Lattner /// being legalized (which could lead to non-serialized call sequences). 716831a815999dde4cf801e2076e66b4943964daf2Chris Lattner bool IsLegalizingCall; 72fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner enum LegalizeAction { 7468a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Legal, // The target natively supports this operation. 7568a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner Promote, // This operation should be executed in a larger type. 76d74ea2bbd8bb630331f35ead42d385249bd42af8Chris Lattner Expand // Try to expand this to other ops, otherwise use a libcall. 773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner }; 78fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 793e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// ValueTypeActions - This is a bitvector that contains two bits for each 803e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// value type, where the two bits correspond to the LegalizeAction enum. 813e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// This can be queried with "getTypeAction(VT)". 8268a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner TargetLowering::ValueTypeActionImpl ValueTypeActions; 833e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 843e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// LegalizedNodes - For nodes that are of legal width, and that have more 853e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// than one use, this map indicates what regularized operand to use. This 863e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// allows us to avoid legalizing the same thing more than once. 87475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue> LegalizedNodes; 883e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 89475871a144eb604ddaf37503397ba0941442e5fbDan Gohman void AddLegalizedOperand(SDValue From, SDValue To) { 9069a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(From, To)); 9169a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner // If someone requests legalization of the new node, return itself. 9269a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner if (From != To) 9369a889eb35d59a10e78a07cc26d41cbab31eddceChris Lattner LegalizedNodes.insert(std::make_pair(To, To)); 948afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner } 958afc48e44ad8868c1d41511db645e2ba1a4b894eChris Lattner 963e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnerpublic: 971fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(SelectionDAG &DAG, CodeGenOpt::Level ol); 983e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 993e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// getTypeAction - Return how we should legalize values of this type, either 1003e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// it is already legal or we need to expand it into multiple registers of 1013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// smaller integer type, or we need to promote it to a larger type. 10283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands LegalizeAction getTypeAction(MVT VT) const { 10368a17febc70d9beb5353454e0c6d136ca1e87605Chris Lattner return (LegalizeAction)ValueTypeActions.getTypeAction(VT); 1043e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// isTypeLegal - Return true if this type is legal on this target. 1073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 10883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands bool isTypeLegal(MVT VT) const { 1093e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return getTypeAction(VT) == Legal; 1103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 1113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1123e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner void LegalizeDAG(); 1133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 114456a93afcec7740c45cafa8354317f7b17987a6dChris Lattnerprivate: 115c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// LegalizeOp - We know that the specified value has a legal type. 116c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// Recursively ensure that the operands have legal types, then return the 117c7029805ef35ce9805931067b841e6af11db382eChris Lattner /// result. 118475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue LegalizeOp(SDValue O); 119fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1207ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue OptimizeFloatStore(StoreSDNode *ST); 1217ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 1226867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// PerformInsertVectorEltInMemory - Some target cannot handle a variable 1236867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 1246867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// is necessary to spill the vector being inserted into to memory, perform 1256867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman /// the insert there, and then read the result back. 126475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue PerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, 1273f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 1283f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, 1293f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue Idx, DebugLoc dl); 130826695281344e3a4c4d44d73dd155107aafd689bDan Gohman 1315a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1325a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// performs the same shuffe in terms of order or result bytes, but on a type 1335a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// whose vector element type is narrower than the original shuffle type. 1345a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman /// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 1355a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue ShuffleWithNarrowerEltType(MVT NVT, MVT VT, DebugLoc dl, 1365a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue N1, SDValue N2, 1375a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SmallVectorImpl<int> &Mask) const; 138fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 139c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner bool LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 14000755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo); 1416831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 142bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen void LegalizeSetCCCondCode(MVT VT, SDValue &LHS, SDValue &RHS, SDValue &CC, 143bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl); 144fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 14547b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman SDValue ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, bool isSigned); 146f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman SDValue ExpandFPLibCall(SDNode *Node, RTLIB::Libcall Call_F32, 147f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, RTLIB::Libcall Call_F80, 148f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128); 149f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman SDValue ExpandIntLibCall(SDNode *Node, bool isSigned, RTLIB::Libcall Call_I16, 150f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I32, RTLIB::Libcall Call_I64, 151f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128); 152475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1538a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue EmitStackConvert(SDValue SrcOp, MVT SlotVT, MVT DestVT, DebugLoc dl); 154475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandBUILD_VECTOR(SDNode *Node); 155475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ExpandSCALAR_TO_VECTOR(SDNode *Node); 1564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue ExpandDBG_STOPPOINT(SDNode *Node); 1574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman void ExpandDYNAMIC_STACKALLOC(SDNode *Node, 1584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results); 1594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue ExpandFCOPYSIGN(SDNode *Node); 160af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue ExpandLegalINT_TO_FP(bool isSigned, SDValue LegalOp, MVT DestVT, 161af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 162af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue PromoteLegalINT_TO_FP(SDValue LegalOp, MVT DestVT, bool isSigned, 163af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 164af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue PromoteLegalFP_TO_INT(SDValue LegalOp, MVT DestVT, bool isSigned, 165af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl); 166475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1678a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBSWAP(SDValue Op, DebugLoc dl); 1688a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue ExpandBitCount(unsigned Opc, SDValue Op, DebugLoc dl); 169475871a144eb604ddaf37503397ba0941442e5fbDan Gohman 1703d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue ExpandExtractFromVectorThroughStack(SDValue Op); 1717ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue ExpandVectorBuildThroughStack(SDNode* Node); 1728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 1738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void ExpandNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman void PromoteNode(SDNode *Node, SmallVectorImpl<SDValue> &Results); 1753e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner}; 1763e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 1773e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 1785a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// ShuffleWithNarrowerEltType - Return a vector shuffle operation which 1795a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// performs the same shuffe in terms of order or result bytes, but on a type 1805a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman/// whose vector element type is narrower than the original shuffle type. 1819008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman/// e.g. <v4i32> <0, 1, 0, 1> -> v8i16 <0, 1, 2, 3, 0, 1, 2, 3> 1825a5ca1519e04310f585197c20e7ae584b7f2d11fNate BegemanSDValue 1835a5ca1519e04310f585197c20e7ae584b7f2d11fNate BegemanSelectionDAGLegalize::ShuffleWithNarrowerEltType(MVT NVT, MVT VT, DebugLoc dl, 1845a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman SDValue N1, SDValue N2, 1859008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVectorImpl<int> &Mask) const { 1869008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman MVT EltVT = NVT.getVectorElementType(); 1875a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumMaskElts = VT.getVectorNumElements(); 1885a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman unsigned NumDestElts = NVT.getVectorNumElements(); 1899008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman unsigned NumEltsGrowth = NumDestElts / NumMaskElts; 1909008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1919008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(NumEltsGrowth && "Cannot promote to vector type with fewer elts!"); 1929008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1939008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman if (NumEltsGrowth == 1) 1949008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &Mask[0]); 1959008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman 1969008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman SmallVector<int, 8> NewMask; 1975a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman for (unsigned i = 0; i != NumMaskElts; ++i) { 1989008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman int Idx = Mask[i]; 1999008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman for (unsigned j = 0; j != NumEltsGrowth; ++j) { 2009008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman if (Idx < 0) 2019008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(-1); 2029008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman else 2039008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman NewMask.push_back(Idx * NumEltsGrowth + j); 2044352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner } 20515684b29552393553524171bff1913e750f390f8Rafael Espindola } 2065a5ca1519e04310f585197c20e7ae584b7f2d11fNate Begeman assert(NewMask.size() == NumDestElts && "Non-integer NumEltsGrowth?"); 2079008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman assert(TLI.isShuffleMaskLegal(NewMask, NVT) && "Shuffle not legal?"); 2089008ca6b6b4f638cfafccb593cbc5b1d3f5ab877Nate Begeman return DAG.getVectorShuffle(NVT, dl, N1, N2, &NewMask[0]); 2094352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 2104352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 2115aa4977fba97e816b5735f0bc53f16a46b24de63Bill WendlingSelectionDAGLegalize::SelectionDAGLegalize(SelectionDAG &dag, 2121fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman CodeGenOpt::Level ol) 213be8cc2a3dedeb7685f07e68cdc4b9502eb97eb2bBill Wendling : TLI(dag.getTargetLoweringInfo()), DAG(dag), OptLevel(ol), 2141fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman ValueTypeActions(TLI.getValueTypeActions()) { 215f2e19d5dcfa13472493bb18339555686182b7df9David Greene assert(MVT::LAST_VALUETYPE <= MVT::MAX_ALLOWED_VALUETYPE && 2163e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner "Too many value types for ValueTypeActions to hold!"); 2173e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2183e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2193e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattnervoid SelectionDAGLegalize::LegalizeDAG() { 2206831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LastCALLSEQ_END = DAG.getEntryNode(); 2216831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = false; 222e5ab34e05d701da042619bf540046efc3c7bc41fMon P Wang 223ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // The legalize process is inherently a bottom-up recursive process (users 224ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // legalize their uses before themselves). Given infinite stack space, we 225ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // could just start legalizing on the root and traverse the whole graph. In 226ab510a76d6fed412f2dbbb29b3e123eef34f9c0aChris Lattner // practice however, this causes us to run out of stack space on large basic 22732fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // blocks. To avoid this problem, compute an ordering of the nodes where each 22832fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // node is only legalized after all of its operands are legalized. 229f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman DAG.AssignTopologicalOrder(); 230f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman for (SelectionDAG::allnodes_iterator I = DAG.allnodes_begin(), 231f06c835f769aa1cf67801ed1f6bd366a447c18b1Dan Gohman E = prior(DAG.allnodes_end()); I != next(E); ++I) 232b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(I, 0)); 23332fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner 23432fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner // Finally, it's possible the root changed. Get the new root. 235475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue OldRoot = DAG.getRoot(); 23632fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner assert(LegalizedNodes.count(OldRoot) && "Root didn't get legalized?"); 23732fca00a23a9872c31999d054b4dd7c724276d9dChris Lattner DAG.setRoot(LegalizedNodes[OldRoot]); 2383e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2393e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner LegalizedNodes.clear(); 2403e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2413e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner // Remove dead nodes now. 242190a418bf6b49a4ef1c1980229a2f0d516e8a2cdChris Lattner DAG.RemoveDeadNodes(); 2433e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 2443e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 2456831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 2466831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// FindCallEndFromCallStart - Given a chained node that is part of a call 2476831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_END node that terminates the call sequence. 2486831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallEndFromCallStart(SDNode *Node) { 2496831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_END) 2506831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Node; 2516831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->use_empty()) 2526831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; // No CallSeqEnd 253fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2546831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // The chain is usually at the end. 255475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue TheChain(Node, Node->getNumValues()-1); 2566831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (TheChain.getValueType() != MVT::Other) { 2576831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Sometimes it's at the beginning. 258475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, 0); 2596831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (TheChain.getValueType() != MVT::Other) { 2606831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Otherwise, hunt for it. 2616831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 1, e = Node->getNumValues(); i != e; ++i) 2626831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getValueType(i) == MVT::Other) { 263475871a144eb604ddaf37503397ba0941442e5fbDan Gohman TheChain = SDValue(Node, i); 2646831a815999dde4cf801e2076e66b4943964daf2Chris Lattner break; 2656831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 266fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 267fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, we walked into a node without a chain. 2686831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (TheChain.getValueType() != MVT::Other) 2696831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2706831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2716831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 272fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2736831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (SDNode::use_iterator UI = Node->use_begin(), 2746831a815999dde4cf801e2076e66b4943964daf2Chris Lattner E = Node->use_end(); UI != E; ++UI) { 275fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2766831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Make sure to only follow users of our token chain. 2778968450305c28444edc3c272d8752a8db0c2f34aDan Gohman SDNode *User = *UI; 2786831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = User->getNumOperands(); i != e; ++i) 2796831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (User->getOperand(i) == TheChain) 2806831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (SDNode *Result = FindCallEndFromCallStart(User)) 2816831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 2826831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 2836831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return 0; 2846831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 2856831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 286fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// FindCallStartFromCallEnd - Given a chained node that is part of a call 2876831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// sequence, find the CALLSEQ_START node that initiates the call sequence. 2886831a815999dde4cf801e2076e66b4943964daf2Chris Lattnerstatic SDNode *FindCallStartFromCallEnd(SDNode *Node) { 2896831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(Node && "Didn't find callseq_start for a call??"); 2906831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Node->getOpcode() == ISD::CALLSEQ_START) return Node; 291fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 2926831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(Node->getOperand(0).getValueType() == MVT::Other && 2936831a815999dde4cf801e2076e66b4943964daf2Chris Lattner "Node doesn't have a token chain argument!"); 294ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif return FindCallStartFromCallEnd(Node->getOperand(0).getNode()); 2956831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 2966831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 2976831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// LegalizeAllNodesNotLeadingTo - Recursively walk the uses of N, looking to 298fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel/// see if any uses can reach Dest. If no dest operands can get to dest, 2996831a815999dde4cf801e2076e66b4943964daf2Chris Lattner/// legalize them, legalize ourself, and return false, otherwise, return true. 300c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 301c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// Keep track of the nodes we fine that actually do lead to Dest in 302c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// NodesLeadingTo. This avoids retraversing them exponential number of times. 303c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner/// 304c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattnerbool SelectionDAGLegalize::LegalizeAllNodesNotLeadingTo(SDNode *N, SDNode *Dest, 30500755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner SmallPtrSet<SDNode*, 32> &NodesLeadingTo) { 3066831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (N == Dest) return true; // N certainly leads to Dest :) 307fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 308c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // If we've already processed this node and it does lead to Dest, there is no 309c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner // need to reprocess it. 310c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (NodesLeadingTo.count(N)) return true; 311fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3126831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the first result of this node has been already legalized, then it cannot 3136831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // reach N. 31474807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman if (LegalizedNodes.count(SDValue(N, 0))) return false; 315fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 3166831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node has not already been legalized. Check and legalize all 3176831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // operands. If none lead to Dest, then we can legalize this node. 3186831a815999dde4cf801e2076e66b4943964daf2Chris Lattner bool OperandsLeadToDest = false; 3196831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) 3206831a815999dde4cf801e2076e66b4943964daf2Chris Lattner OperandsLeadToDest |= // If an operand leads to Dest, so do we. 321ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif LegalizeAllNodesNotLeadingTo(N->getOperand(i).getNode(), Dest, NodesLeadingTo); 3226831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 323c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner if (OperandsLeadToDest) { 324c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo.insert(N); 325c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner return true; 326c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 3276831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3286831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Okay, this node looks safe, legalize it and return false. 329b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman LegalizeOp(SDValue(N, 0)); 3306831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return false; 3316831a815999dde4cf801e2076e66b4943964daf2Chris Lattner} 3326831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 3339f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// ExpandConstantFP - Expands the ConstantFP node to an integer constant or 3349f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng/// a load from the constant pool. 335475871a144eb604ddaf37503397ba0941442e5fbDan Gohmanstatic SDValue ExpandConstantFP(ConstantFPSDNode *CFP, bool UseCP, 3360d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman SelectionDAG &DAG, const TargetLowering &TLI) { 337004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng bool Extend = false; 33833c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen DebugLoc dl = CFP->getDebugLoc(); 339004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 340004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // If a FP immediate is precise when represented as a float and if the 341004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // target can do an extending load from float to double, we put it into 342004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng // the constant pool as a float, even if it's is statically typed as a 343aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // double. This shrinks FP constants and canonicalizes them for targets where 344aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // an FP extending load is the same cost as a normal load (such as on the x87 345aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner // fp stack or PPC FP unit). 34683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = CFP->getValueType(0); 3474fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman ConstantFP *LLVMC = const_cast<ConstantFP*>(CFP->getConstantFPValue()); 3489f87788040786b1bc6530763e4cf7e105bfb2924Evan Cheng if (!UseCP) { 349d2e936a513b01b2c5df91a9c0d80070e8c752aceChris Lattner assert((VT == MVT::f64 || VT == MVT::f32) && "Invalid type expansion"); 3507111b02c734c992b8c97d9918118768026dad79eDale Johannesen return DAG.getConstant(LLVMC->getValueAPF().bitcastToAPInt(), 351ef12057737229452c17983faa20857dba441ef05Evan Cheng (VT == MVT::f64) ? MVT::i64 : MVT::i32); 352279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng } 353279101eb1ac61e2d5b83d5bdcc5be56e710d2cd7Evan Cheng 35483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT OrigVT = VT; 35583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT SVT = VT; 356ef12057737229452c17983faa20857dba441ef05Evan Cheng while (SVT != MVT::f32) { 35783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands SVT = (MVT::SimpleValueType)(SVT.getSimpleVT() - 1); 358ef12057737229452c17983faa20857dba441ef05Evan Cheng if (CFP->isValueValidForType(SVT, CFP->getValueAPF()) && 359ef12057737229452c17983faa20857dba441ef05Evan Cheng // Only do this if the target has a native EXTLOAD instruction from 360ef12057737229452c17983faa20857dba441ef05Evan Cheng // smaller type. 3610329466b6b4927f4e6f5d144891fef06a027fec5Evan Cheng TLI.isLoadExtLegal(ISD::EXTLOAD, SVT) && 362aa2acbbbf06348f20274f4eeb77f9761c654a589Chris Lattner TLI.ShouldShrinkFPConstant(OrigVT)) { 363d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson const Type *SType = SVT.getTypeForMVT(*DAG.getContext()); 364ef12057737229452c17983faa20857dba441ef05Evan Cheng LLVMC = cast<ConstantFP>(ConstantExpr::getFPTrunc(LLVMC, SType)); 365ef12057737229452c17983faa20857dba441ef05Evan Cheng VT = SVT; 366ef12057737229452c17983faa20857dba441ef05Evan Cheng Extend = true; 367ef12057737229452c17983faa20857dba441ef05Evan Cheng } 368004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng } 369004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 370475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(LLVMC, TLI.getPointerTy()); 3711606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 372ef12057737229452c17983faa20857dba441ef05Evan Cheng if (Extend) 37333c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen return DAG.getExtLoad(ISD::EXTLOAD, dl, 37439355f9fea790c5a1b12ef0fdcfeac3f533232eaDale Johannesen OrigVT, DAG.getEntryNode(), 3753069b8743769527ce7af6cfb6591a2f0fc2faee4Dan Gohman CPIdx, PseudoSourceValue::getConstantPool(), 37650284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman 0, VT, false, Alignment); 37733c960f523f2308482d5b2816af46a7ec90a6d3dDale Johannesen return DAG.getLoad(OrigVT, dl, DAG.getEntryNode(), CPIdx, 37850284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, false, Alignment); 379004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng} 380004952140f3cf92ee098c2c5b8cdee1449bdc2edEvan Cheng 381f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedStore - Expands an unaligned store to 2 half-size stores. 382f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 383475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedStore(StoreSDNode *ST, SelectionDAG &DAG, 3840d137d7f35fba98f668098b3badf644efacf0e08Dan Gohman const TargetLowering &TLI) { 385475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = ST->getChain(); 386475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = ST->getBasePtr(); 387475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Val = ST->getValue(); 38883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = Val.getValueType(); 389907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen int Alignment = ST->getAlignment(); 390907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen int SVOffset = ST->getSrcValueOffset(); 391bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = ST->getDebugLoc(); 39283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (ST->getMemoryVT().isFloatingPoint() || 39383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands ST->getMemoryVT().isVector()) { 39405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MVT intVT = MVT::getIntegerVT(VT.getSizeInBits()); 39505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 39605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a bitconvert of the value to the integer type of the 39705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // same size, then a (misaligned) int store. 39805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // FIXME: Does not handle truncating floating point stores! 399bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::BIT_CONVERT, dl, intVT, Val); 400bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getStore(Chain, dl, Result, Ptr, ST->getSrcValue(), 40105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset, ST->isVolatile(), Alignment); 40205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } else { 40305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do a (aligned) store to a stack slot, then copy from the stack slot 40405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // to the final destination using (unaligned) integer loads and stores. 40505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MVT StoredVT = ST->getMemoryVT(); 40605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MVT RegVT = 40705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands TLI.getRegisterType(MVT::getIntegerVT(StoredVT.getSizeInBits())); 40805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned StoredBytes = StoredVT.getSizeInBits() / 8; 40905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned RegBytes = RegVT.getSizeInBits() / 8; 41005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned NumRegs = (StoredBytes + RegBytes - 1) / RegBytes; 41105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 412fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Make sure the stack slot is also aligned for the register type. 413fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands SDValue StackPtr = DAG.CreateStackTemporary(StoredVT, RegVT); 414fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 415fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Perform the original store, only redirected to the stack slot. 416fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Store = DAG.getTruncStore(Chain, dl, 417ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson Val, StackPtr, NULL, 0, StoredVT); 41805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 41905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SmallVector<SDValue, 8> Stores; 42005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned Offset = 0; 42105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 42205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do all but one copies using the full register width. 42305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands for (unsigned i = 1; i < NumRegs; i++) { 42405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Load one integer register's worth from the stack slot. 425bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getLoad(RegVT, dl, Store, StackPtr, NULL, 0); 42605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Store it to the final location. Remember the store. 427bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, Ptr, 42805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->getSrcValue(), SVOffset + Offset, 42905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->isVolatile(), 43005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 43105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Increment the pointers. 43205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Offset += RegBytes; 433bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 43405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Increment); 435bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 43605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 43705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 438fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // The last store may be partial. Do a truncating store. On big-endian 439fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // machines this requires an extending load from the stack slot to ensure 440fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // that the bits are in the right place. 441fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MVT MemVT = MVT::getIntegerVT(8 * (StoredBytes - Offset)); 442fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 443fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Load from the stack slot. 444bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Store, StackPtr, 445fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands NULL, 0, MemVT); 44605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 447bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, Ptr, 44805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands ST->getSrcValue(), SVOffset + Offset, 449fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MemVT, ST->isVolatile(), 45005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(ST->getAlignment(), Offset))); 45105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The order of the stores doesn't matter - say it with a TokenFactor. 452bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 45305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Stores.size()); 45405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 455907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 45683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(ST->getMemoryVT().isInteger() && 45783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands !ST->getMemoryVT().isVector() && 458907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen "Unaligned store of unknown type."); 459f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Get the half-size VT 46083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NewStoredVT = 46183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands (MVT::SimpleValueType)(ST->getMemoryVT().getSimpleVT() - 1); 46283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands int NumBits = NewStoredVT.getSizeInBits(); 463f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int IncrementSize = NumBits / 8; 464f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 465f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Divide the stored value in two parts. 466475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 467475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo = Val; 468bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Hi = DAG.getNode(ISD::SRL, dl, VT, Val, ShiftAmount); 469f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 470f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Store the two parts 471475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store1, Store2; 472bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store1 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Lo:Hi, Ptr, 473f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->getSrcValue(), SVOffset, NewStoredVT, 474f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->isVolatile(), Alignment); 475bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 476f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 477dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands Alignment = MinAlign(Alignment, IncrementSize); 478bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Store2 = DAG.getTruncStore(Chain, dl, TLI.isLittleEndian()?Hi:Lo, Ptr, 479f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ST->getSrcValue(), SVOffset + IncrementSize, 480f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio NewStoredVT, ST->isVolatile(), Alignment); 481f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 482bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Store1, Store2); 483f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 484f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 485f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio/// ExpandUnalignedLoad - Expands an unaligned load to 2 half-size loads. 486f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venanciostatic 487475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue ExpandUnalignedLoad(LoadSDNode *LD, SelectionDAG &DAG, 488e9530ecae4897fe8157bd4d7616043bd8c0484e2Dan Gohman const TargetLowering &TLI) { 489f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio int SVOffset = LD->getSrcValueOffset(); 490475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Chain = LD->getChain(); 491475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ptr = LD->getBasePtr(); 49283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = LD->getValueType(0); 49383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT LoadedVT = LD->getMemoryVT(); 494bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl = LD->getDebugLoc(); 49583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (VT.isFloatingPoint() || VT.isVector()) { 49605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MVT intVT = MVT::getIntegerVT(LoadedVT.getSizeInBits()); 49705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (TLI.isTypeLegal(intVT)) { 49805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Expand to a (misaligned) integer load of the same size, 49905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // then bitconvert to floating point or vector. 500bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue newLoad = DAG.getLoad(intVT, dl, Chain, Ptr, LD->getSrcValue(), 50105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset, LD->isVolatile(), 502907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen LD->getAlignment()); 503bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::BIT_CONVERT, dl, LoadedVT, newLoad); 50405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands if (VT.isFloatingPoint() && LoadedVT != VT) 505bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, VT, Result); 506907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen 50705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Ops[] = { Result, Chain }; 508bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 50905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } else { 51005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Copy the value to a (aligned) stack slot using (unaligned) integer 51105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // loads and stores, then do a (aligned) load from the stack slot. 51205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MVT RegVT = TLI.getRegisterType(intVT); 51305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned LoadedBytes = LoadedVT.getSizeInBits() / 8; 51405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned RegBytes = RegVT.getSizeInBits() / 8; 51505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned NumRegs = (LoadedBytes + RegBytes - 1) / RegBytes; 51605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 517fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // Make sure the stack slot is also aligned for the register type. 518fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands SDValue StackBase = DAG.CreateStackTemporary(LoadedVT, RegVT); 519fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands 52005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Increment = DAG.getConstant(RegBytes, TLI.getPointerTy()); 52105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SmallVector<SDValue, 8> Stores; 52205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue StackPtr = StackBase; 52305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands unsigned Offset = 0; 52405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 52505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Do all but one copies using the full register width. 52605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands for (unsigned i = 1; i < NumRegs; i++) { 52705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Load one integer register's worth from the original location. 528bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getLoad(RegVT, dl, Chain, Ptr, LD->getSrcValue(), 52905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SVOffset + Offset, LD->isVolatile(), 53005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(LD->getAlignment(), Offset)); 53105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 532bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getStore(Load.getValue(1), dl, Load, StackPtr, 53305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands NULL, 0)); 53405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Increment the pointers. 53505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Offset += RegBytes; 536bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, Increment); 537bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen StackPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), StackPtr, 53805e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Increment); 53905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 54005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 54105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The last copy may be partial. Do an extending load. 542fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MVT MemVT = MVT::getIntegerVT(8 * (LoadedBytes - Offset)); 543bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Load = DAG.getExtLoad(ISD::EXTLOAD, dl, RegVT, Chain, Ptr, 54405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands LD->getSrcValue(), SVOffset + Offset, 545fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands MemVT, LD->isVolatile(), 54605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands MinAlign(LD->getAlignment(), Offset)); 54705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Follow the load with a store to the stack slot. Remember the store. 548fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // On big-endian machines this requires a truncating store to ensure 549fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands // that the bits end up in the right place. 550bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Stores.push_back(DAG.getTruncStore(Load.getValue(1), dl, Load, StackPtr, 551fd6673cf7fd5c0c1e6817e5fcf460a289712ee57Duncan Sands NULL, 0, MemVT)); 55205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 55305e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // The order of the stores doesn't matter - say it with a TokenFactor. 554bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, &Stores[0], 55505e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands Stores.size()); 55605e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 55705e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Finally, perform the original load only redirected to the stack slot. 558bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Load = DAG.getExtLoad(LD->getExtensionType(), dl, VT, TF, StackBase, 55905e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands NULL, 0, LoadedVT); 56005e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands 56105e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands // Callers expect a MERGE_VALUES node. 56205e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands SDValue Ops[] = { Load, TF }; 563bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 56405e11fab87102a230551327bfc8434ffad7a88d4Duncan Sands } 565907f28ce3032e67c02a50095659e901de867dd3cDale Johannesen } 56683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(LoadedVT.isInteger() && !LoadedVT.isVector() && 567e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner "Unaligned load of unsupported type."); 568e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner 5698155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // Compute the new VT that is half the size of the old one. This is an 5708155d64c2ffab8b17e0fd8e3b7a66fcef6a8ec9dDale Johannesen // integer MVT. 57183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned NumBits = LoadedVT.getSizeInBits(); 57283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NewLoadedVT; 57383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands NewLoadedVT = MVT::getIntegerVT(NumBits/2); 574e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner NumBits >>= 1; 575fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 576e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned Alignment = LD->getAlignment(); 577e400af83b3f8b69407a8963f1d2e2c82fa766f33Chris Lattner unsigned IncrementSize = NumBits / 8; 578f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio ISD::LoadExtType HiExtType = LD->getExtensionType(); 579f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 580f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If the original load is NON_EXTLOAD, the hi part load must be ZEXTLOAD. 581f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (HiExtType == ISD::NON_EXTLOAD) 582f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio HiExtType = ISD::ZEXTLOAD; 583f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 584f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // Load the value in two parts 585475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 586f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (TLI.isLittleEndian()) { 587bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getSrcValue(), 588f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset, NewLoadedVT, LD->isVolatile(), Alignment); 589bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 590f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 591bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getSrcValue(), 592f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset + IncrementSize, NewLoadedVT, LD->isVolatile(), 593dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands MinAlign(Alignment, IncrementSize)); 594f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } else { 595bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Hi = DAG.getExtLoad(HiExtType, dl, VT, Chain, Ptr, LD->getSrcValue(), 596ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson SVOffset, NewLoadedVT, LD->isVolatile(), Alignment); 597bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ptr = DAG.getNode(ISD::ADD, dl, Ptr.getValueType(), Ptr, 598f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio DAG.getConstant(IncrementSize, TLI.getPointerTy())); 599bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Lo = DAG.getExtLoad(ISD::ZEXTLOAD, dl, VT, Chain, Ptr, LD->getSrcValue(), 600f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio SVOffset + IncrementSize, NewLoadedVT, LD->isVolatile(), 601dc84650679b6330e0fcdd4cf8bc2a351387db7caDuncan Sands MinAlign(Alignment, IncrementSize)); 602f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 603f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 604f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // aggregate the two parts 605475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ShiftAmount = DAG.getConstant(NumBits, TLI.getShiftAmountTy()); 606bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Result = DAG.getNode(ISD::SHL, dl, VT, Hi, ShiftAmount); 607bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Result = DAG.getNode(ISD::OR, dl, VT, Result, Lo); 608f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 609bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue TF = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo.getValue(1), 610f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio Hi.getValue(1)); 611f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 612475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Ops[] = { Result, TF }; 613bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getMergeValues(Ops, 2, dl); 614f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio} 615912095becac923ff614d7b07728eb345ada67765Evan Cheng 6166867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// PerformInsertVectorEltInMemory - Some target cannot handle a variable 6176867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// insertion index for the INSERT_VECTOR_ELT instruction. In this case, it 6186867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// is necessary to spill the vector being inserted into to memory, perform 6196867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman/// the insert there, and then read the result back. 620475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize:: 621bb5da918545efb54857a09c983a5a7f22a7e04d4Dale JohannesenPerformInsertVectorEltInMemory(SDValue Vec, SDValue Val, SDValue Idx, 622bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl) { 623475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1 = Vec; 624475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp2 = Val; 625475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = Idx; 626fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 6276867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // If the target doesn't support this, we have to spill the input vector 6286867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // to a temporary stack slot, update the element, then reload it. This is 6296867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // badness. We could also load the value into a vector register (either 6306867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // with a "move to register" or "extload into register" instruction, then 6316867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // permute it into place, if the idx is a constant and if the idx is 6326867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // supported by the target. 63383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = Tmp1.getValueType(); 63483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT EltVT = VT.getVectorElementType(); 63583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT IdxVT = Tmp3.getValueType(); 63683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT PtrVT = TLI.getPointerTy(); 637475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(VT); 6386867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 639ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif int SPFI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex(); 6406867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 6416867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the vector. 642bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Tmp1, StackPtr, 6430c39719bfc7d0b3e61fbd55e1115184a1d5f6ae7Mon P Wang PseudoSourceValue::getFixedStack(SPFI), 0); 6446867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 6456867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Truncate or zero extend offset to target pointer type. 6468e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands unsigned CastOpc = IdxVT.bitsGT(PtrVT) ? ISD::TRUNCATE : ISD::ZERO_EXTEND; 647bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(CastOpc, dl, PtrVT, Tmp3); 6486867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Add the offset to the index. 64983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned EltSize = EltVT.getSizeInBits()/8; 650bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Tmp3 = DAG.getNode(ISD::MUL, dl, IdxVT, Tmp3,DAG.getConstant(EltSize, IdxVT)); 651bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue StackPtr2 = DAG.getNode(ISD::ADD, dl, IdxVT, Tmp3, StackPtr); 6526867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Store the scalar value. 653bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen Ch = DAG.getTruncStore(Ch, dl, Tmp2, StackPtr2, 654a54cf176613f9ae8301519a61b8935652c0fb8aeDan Gohman PseudoSourceValue::getFixedStack(SPFI), 0, EltVT); 6556867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman // Load the updated vector. 656bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen return DAG.getLoad(VT, dl, Ch, StackPtr, 657a54cf176613f9ae8301519a61b8935652c0fb8aeDan Gohman PseudoSourceValue::getFixedStack(SPFI), 0); 6586867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman} 6596867991d541d08ca95d86841eca5f7c1d5096864Nate Begeman 660e9f1015d1f184a51aaadfd03be0846bd5e7d08a2Mon P Wang 6613f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanSDValue SelectionDAGLegalize:: 6623f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli FriedmanExpandINSERT_VECTOR_ELT(SDValue Vec, SDValue Val, SDValue Idx, DebugLoc dl) { 6633f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (ConstantSDNode *InsertPos = dyn_cast<ConstantSDNode>(Idx)) { 6643f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // SCALAR_TO_VECTOR requires that the type of the value being inserted 6653f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // match the element type of the vector being created, except for 6663f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // integers in which case the inserted value can be over width. 6673f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman MVT EltVT = Vec.getValueType().getVectorElementType(); 6683f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (Val.getValueType() == EltVT || 6693f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman (EltVT.isInteger() && Val.getValueType().bitsGE(EltVT))) { 6703f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SDValue ScVec = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, 6713f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Vec.getValueType(), Val); 6723f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6733f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman unsigned NumElts = Vec.getValueType().getVectorNumElements(); 6743f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // We generate a shuffle of InVec and ScVec, so the shuffle mask 6753f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // should be 0,1,2,3,4,5... with the appropriate element replaced with 6763f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // elt 0 of the RHS. 6773f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman SmallVector<int, 8> ShufOps; 6783f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0; i != NumElts; ++i) 6793f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman ShufOps.push_back(i != InsertPos->getZExtValue() ? i : NumElts); 6803f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6813f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return DAG.getVectorShuffle(Vec.getValueType(), dl, Vec, ScVec, 6823f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman &ShufOps[0]); 6833f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 6843f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 6853f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman return PerformInsertVectorEltInMemory(Vec, Val, Idx, dl); 6863f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman} 6873f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman 6887ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::OptimizeFloatStore(StoreSDNode* ST) { 6897ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Turn 'store float 1.0, Ptr' -> 'store int 0x12345678, Ptr' 6907ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: We shouldn't do this for TargetConstantFP's. 6917ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // FIXME: move this to the DAG Combiner! Note that we can't regress due 6927ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // to phase ordering between legalized code and the dag combiner. This 6937ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // probably means that we need to integrate dag combiner and legalizer 6947ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // together. 6957ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We generally can't do this one for long doubles. 6967ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp1 = ST->getChain(); 6977ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp2 = ST->getBasePtr(); 6987ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Tmp3; 6997ef3d178660b82d1571757e49f44b004d772a116Eli Friedman int SVOffset = ST->getSrcValueOffset(); 7007ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Alignment = ST->getAlignment(); 7017ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bool isVolatile = ST->isVolatile(); 7027ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = ST->getDebugLoc(); 7037ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (ConstantFPSDNode *CFP = dyn_cast<ConstantFPSDNode>(ST->getValue())) { 7047ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (CFP->getValueType(0) == MVT::f32 && 7057ef3d178660b82d1571757e49f44b004d772a116Eli Friedman getTypeAction(MVT::i32) == Legal) { 7067ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF(). 7077ef3d178660b82d1571757e49f44b004d772a116Eli Friedman bitcastToAPInt().zextOrTrunc(32), 7087ef3d178660b82d1571757e49f44b004d772a116Eli Friedman MVT::i32); 7097ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 7107ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SVOffset, isVolatile, Alignment); 7117ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } else if (CFP->getValueType(0) == MVT::f64) { 7127ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // If this target supports 64-bit registers, do a single 64-bit store. 7137ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (getTypeAction(MVT::i64) == Legal) { 7147ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp3 = DAG.getConstant(CFP->getValueAPF().bitcastToAPInt(). 7157ef3d178660b82d1571757e49f44b004d772a116Eli Friedman zextOrTrunc(64), MVT::i64); 7167ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 7177ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SVOffset, isVolatile, Alignment); 7187ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } else if (getTypeAction(MVT::i32) == Legal && !ST->isVolatile()) { 7197ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, if the target supports 32-bit registers, use 2 32-bit 7207ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // stores. If the target supports neither 32- nor 64-bits, this 7217ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // xform is certainly not worth it. 7227ef3d178660b82d1571757e49f44b004d772a116Eli Friedman const APInt &IntVal =CFP->getValueAPF().bitcastToAPInt(); 7237ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Lo = DAG.getConstant(APInt(IntVal).trunc(32), MVT::i32); 7247ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Hi = DAG.getConstant(IntVal.lshr(32).trunc(32), MVT::i32); 7257ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (TLI.isBigEndian()) std::swap(Lo, Hi); 7267ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 7277ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Lo = DAG.getStore(Tmp1, dl, Lo, Tmp2, ST->getSrcValue(), 7287ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SVOffset, isVolatile, Alignment); 7297ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 7307ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DAG.getIntPtrConstant(4)); 7317ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Hi = DAG.getStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), SVOffset+4, 7327ef3d178660b82d1571757e49f44b004d772a116Eli Friedman isVolatile, MinAlign(Alignment, 4U)); 7337ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 7347ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 7357ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7367ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7377ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 7387ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return SDValue(); 7397ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 7407ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 741a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// LegalizeOp - We know that the specified value has a legal type, and 742a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// that its operands are legal. Now ensure that the operation itself 743a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// is legal, recursively ensuring that the operands' operations remain 744a346615d11f0a560c6e7280c1e614301d9f93051Dan Gohman/// legal. 745475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::LegalizeOp(SDValue Op) { 74609ec1b058331aadb29a348091611d23892b5c492Chris Lattner if (Op.getOpcode() == ISD::TargetConstant) // Allow illegal target nodes. 74709ec1b058331aadb29a348091611d23892b5c492Chris Lattner return Op; 748fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 749ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif SDNode *Node = Op.getNode(); 7507d2ad624fa749a6d3edac0d94e9c107989c16304Dale Johannesen DebugLoc dl = Node->getDebugLoc(); 751e3304a3d24afc952d3cb415d1b504d973573c5c5Chris Lattner 7521fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 7531fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman assert(getTypeAction(Node->getValueType(i)) == Legal && 7541fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7551fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman 7561fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 7571fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman assert((isTypeLegal(Node->getOperand(i).getValueType()) || 7581fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman Node->getOperand(i).getOpcode() == ISD::TargetConstant) && 7591fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman "Unexpected illegal type!"); 7603e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 76145982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 76245982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 763475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 764e1bd822ddb0099406d9f280535461033dfeeb190Chris Lattner if (I != LegalizedNodes.end()) return I->second; 7653e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 766475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 767475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result = Op; 768456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner bool isCustom = false; 769fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 7708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Figure out the correct action; the way to query this varies by opcode 7718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::LegalizeAction Action; 7728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman bool SimpleFinishLegalizing = true; 7733e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner switch (Node->getOpcode()) { 7748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_W_CHAIN: 7758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_WO_CHAIN: 7768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::INTRINSIC_VOID: 7778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAARG: 7788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STACKSAVE: 7798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), MVT::Other); 7808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 7818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 7828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 7838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 7848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 7858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType()); 7868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 7878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: 7888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 7898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT InnerType = cast<VTSDNode>(Node->getOperand(1))->getVT(); 7908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), InnerType); 7918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 7928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 7933be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SELECT_CC: 7943be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::SETCC: 7953be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman case ISD::BR_CC: { 7963be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CCOperand = Node->getOpcode() == ISD::SELECT_CC ? 4 : 7973be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getOpcode() == ISD::SETCC ? 2 : 1; 7983be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman unsigned CompareOperand = Node->getOpcode() == ISD::BR_CC ? 2 : 0; 7993be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman MVT OpVT = Node->getOperand(CompareOperand).getValueType(); 8003be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman ISD::CondCode CCCode = 8013be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman cast<CondCodeSDNode>(Node->getOperand(CCOperand))->get(); 8023be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getCondCodeAction(CCCode, OpVT); 8033be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Action == TargetLowering::Legal) { 8043be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (Node->getOpcode() == ISD::SELECT_CC) 8053be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), 8063be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Node->getValueType(0)); 8073be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman else 8083be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), OpVT); 8093be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8103be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 8113be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } 8128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::LOAD: 8138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::STORE: 814ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: Model these properly. LOAD and STORE are complicated, and 815ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // STORE expects the unlegalized operand in some cases. 816ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 817ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 8188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_START: 8198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CALLSEQ_END: 820ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: This shouldn't be necessary. These nodes have special properties 821ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // dealing with the recursive nature of legalization. Removing this 822ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // special case should be done as part of making LegalizeDAG non-recursive. 823ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman SimpleFinishLegalizing = false; 824ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 825ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::CALL: 826ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // FIXME: Legalization for calls requires custom-lowering the call before 827ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // legalizing the operands! (I haven't looked into precisely why.) 8288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SimpleFinishLegalizing = false; 8298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: 8318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 8328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SADDO: 8338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SSUBO: 8348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UADDO: 8358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::USUBO: 8368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SMULO: 8378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UMULO: 8388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FPOWI: 8398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 8408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 8418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 842f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // These operations lie about being legal: when they claim to be legal, 843f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // they should actually be expanded. 8448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Action == TargetLowering::Legal) 8468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Expand; 8478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAMPOLINE: 8498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 8508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 851ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::FORMAL_ARGUMENTS: 8524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // These operations lie about being legal: when they claim to be legal, 8534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // they should actually be custom-lowered. 8544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Action == TargetLowering::Legal) 8564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Action = TargetLowering::Custom; 8578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BUILD_VECTOR: 859b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // A weird case: legalization for BUILD_VECTOR never legalizes the 860b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // operands! 861b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // FIXME: This really sucks... changing it isn't semantically incorrect, 862b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // but it massively pessimizes the code for floating-point BUILD_VECTORs 863b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // because ConstantFP operands get legalized into constant pool loads 864b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // before the BUILD_VECTOR code can see them. It doesn't usually bite, 865b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // though, because BUILD_VECTORS usually get lowered into other nodes 866b5da3f6f98b28afc0c62572c164ffccb4004827fEli Friedman // which get legalized properly. 8678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SimpleFinishLegalizing = false; 868948c1b1cda280c6428dbeaa03a6c2c559dbb93f4Chris Lattner break; 8693e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner default: 870d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner if (Node->getOpcode() >= ISD::BUILTIN_OP_END) { 8718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TargetLowering::Legal; 8728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 8738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0)); 8748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 8758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 877d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner 8788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (SimpleFinishLegalizing) { 8798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVector<SDValue, 8> Ops, ResultVals; 8808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) 8818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops.push_back(LegalizeOp(Node->getOperand(i))); 8828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 8838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: break; 8848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR: 8858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRIND: 8868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_JT: 8878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BR_CC: 8888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BRCOND: 8898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RET: 8908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Branches tweak the chain to include LastCALLSEQ_END 8918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[0] = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Ops[0], 8928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END); 8938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[0] = LegalizeOp(Ops[0]); 8948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 8958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 8968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SHL: 8978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRL: 8988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SRA: 8998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTL: 9008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::ROTR: 9018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Legalizing shifts/rotates requires adjusting the shift amount 9028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // to the appropriate width. 9038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!Ops[1].getValueType().isVector()) 9048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops[1] = LegalizeOp(DAG.getShiftAmountOperand(Ops[1])); 9058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Result = DAG.UpdateNodeOperands(Result.getValue(0), Ops.data(), 9098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Ops.size()); 9108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Action) { 9118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Legal: 912d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 9138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Result.getValue(i)); 9148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Custom: 9168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FIXME: The handling for custom lowering with multiple results is 9178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // a complete mess. 9188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = TLI.LowerOperation(Result, DAG); 9198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Tmp1.getNode()) { 9208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) { 9218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (e == 1) 9228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1); 9238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 9248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals.push_back(Tmp1.getValue(i)); 9258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // FALL THROUGH 9308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Expand: 9318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ExpandNode(Result.getNode(), ResultVals); 9328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case TargetLowering::Promote: 9348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman PromoteNode(Result.getNode(), ResultVals); 9358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 9368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (!ResultVals.empty()) { 9388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0, e = ResultVals.size(); i != e; ++i) { 9398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (ResultVals[i] != SDValue(Node, i)) 9408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ResultVals[i] = LegalizeOp(ResultVals[i]); 9418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman AddLegalizedOperand(SDValue(Node, i), ResultVals[i]); 9428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman return ResultVals[Op.getResNo()]; 944d73cc5d0585e86bf6d350ab9fd9caf85bdfc8b52Chris Lattner } 9458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 9468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 9478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 9488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman default: 949e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#ifndef NDEBUG 95039833585556a69de12053ca1e104fe7edfd86cbdDan Gohman cerr << "NODE: "; Node->dump(&DAG); cerr << "\n"; 951e37fe9b3a1cadceb42ac27fa0718f5a10ea2f0e6Jim Laskey#endif 9527d696d80409aad20bb5da0fc4eccab941dd371d4Torok Edwin LLVM_UNREACHABLE("Do not know how to legalize this operator!"); 953f4ec817299a4187044a6162c2f520772b3ad69a0Chris Lattner case ISD::CALL: 954fdfded55888e35b76bb70231a5bb2f60877c2f6aChris Lattner // The only option for this is to custom lower it. 955b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner Tmp3 = TLI.LowerOperation(Result.getValue(0), DAG); 956ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif assert(Tmp3.getNode() && "Target didn't custom lower this node!"); 9570ea0356dff38dfd0420b8c0a2fdf2fae7898c024Dale Johannesen // A call within a calling sequence must be legalized to something 9580ea0356dff38dfd0420b8c0a2fdf2fae7898c024Dale Johannesen // other than the normal CALLSEQ_END. Violating this gets Legalize 9590ea0356dff38dfd0420b8c0a2fdf2fae7898c024Dale Johannesen // into an infinite loop. 9600ea0356dff38dfd0420b8c0a2fdf2fae7898c024Dale Johannesen assert ((!IsLegalizingCall || 9610ea0356dff38dfd0420b8c0a2fdf2fae7898c024Dale Johannesen Node->getOpcode() != ISD::CALL || 962ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Tmp3.getNode()->getOpcode() != ISD::CALLSEQ_END) && 9630ea0356dff38dfd0420b8c0a2fdf2fae7898c024Dale Johannesen "Nested CALLSEQ_START..CALLSEQ_END not supported."); 9640f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling 9650f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling // The number of incoming and outgoing values should match; unless the final 9660f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling // outgoing value is a flag. 967ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif assert((Tmp3.getNode()->getNumValues() == Result.getNode()->getNumValues() || 968ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif (Tmp3.getNode()->getNumValues() == Result.getNode()->getNumValues() + 1 && 969ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Tmp3.getNode()->getValueType(Tmp3.getNode()->getNumValues() - 1) == 9700f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling MVT::Flag)) && 971b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner "Lowering call/formal_arguments produced unexpected # results!"); 972fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 973f4ec817299a4187044a6162c2f520772b3ad69a0Chris Lattner // Since CALL/FORMAL_ARGUMENTS nodes produce multiple values, make sure to 974e2e41730ccfa9bebfabbd17ab3454aa2bb620b2aChris Lattner // remember that we legalized all of them, so it doesn't get relegalized. 975ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif for (unsigned i = 0, e = Tmp3.getNode()->getNumValues(); i != e; ++i) { 976ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()->getValueType(i) == MVT::Flag) 9770f8d9c04d9feef86cee35cf5fecfb348a6b3de50Bill Wendling continue; 978b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner Tmp1 = LegalizeOp(Tmp3.getValue(i)); 97999a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif if (Op.getResNo() == i) 980e2e41730ccfa9bebfabbd17ab3454aa2bb620b2aChris Lattner Tmp2 = Tmp1; 981475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, i), Tmp1); 982e2e41730ccfa9bebfabbd17ab3454aa2bb620b2aChris Lattner } 983e2e41730ccfa9bebfabbd17ab3454aa2bb620b2aChris Lattner return Tmp2; 984b2827b0901162169bb2692b77a839c9767849134Chris Lattner case ISD::BUILD_VECTOR: 985b2827b0901162169bb2692b77a839c9767849134Chris Lattner switch (TLI.getOperationAction(ISD::BUILD_VECTOR, Node->getValueType(0))) { 986c25e7581b9b8088910da31702d4ca21c4734c6d7Torok Edwin default: LLVM_UNREACHABLE("This action is not supported yet!"); 9872332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner case TargetLowering::Custom: 9882332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Tmp3 = TLI.LowerOperation(Result, DAG); 989ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp3.getNode()) { 9902332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner Result = Tmp3; 9912332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 9922332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 9932332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner // FALLTHROUGH 994ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner case TargetLowering::Expand: 995ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandBUILD_VECTOR(Result.getNode()); 996b2827b0901162169bb2692b77a839c9767849134Chris Lattner break; 9972332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner } 9982332b9f16fe17d1886566729b2241b8cd90f9916Chris Lattner break; 9996831a815999dde4cf801e2076e66b4943964daf2Chris Lattner case ISD::CALLSEQ_START: { 10006831a815999dde4cf801e2076e66b4943964daf2Chris Lattner SDNode *CallEnd = FindCallEndFromCallStart(Node); 1001fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10026831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Recursively Legalize all of the inputs of the call end that do not lead 10036831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // to this call start. This ensures that any libcalls that need be inserted 10046831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // are inserted *before* the CALLSEQ_START. 100500755df36c1448ac4728a74d907aa09e3d8b2d49Chris Lattner {SmallPtrSet<SDNode*, 32> NodesLeadingTo; 10066831a815999dde4cf801e2076e66b4943964daf2Chris Lattner for (unsigned i = 0, e = CallEnd->getNumOperands(); i != e; ++i) 1007ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif LegalizeAllNodesNotLeadingTo(CallEnd->getOperand(i).getNode(), Node, 1008c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner NodesLeadingTo); 1009c9cf4f1a7573ac7e379efd6ad15d7bd0a84a097cChris Lattner } 10106831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 10116831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Now that we legalized all of the inputs (which may have inserted 10126831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // libcalls) create the new CALLSEQ_START node. 10136831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 10146831a815999dde4cf801e2076e66b4943964daf2Chris Lattner 10156831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Merge in the last call, to ensure that this call start after the last 10166831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // call ended. 1017c5d7d7c715f7b7a4eeea1ceaafefc3d1d6df2addChris Lattner if (LastCALLSEQ_END.getOpcode() != ISD::EntryToken) { 1018fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Tmp1 = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 1019ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp1, LastCALLSEQ_END); 1020b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner Tmp1 = LegalizeOp(Tmp1); 1021b248e16afd105fd8c01e08d8bf997b08ff08d127Chris Lattner } 1022fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10236831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Do not try to legalize the target-specific arguments (#1+). 10246831a815999dde4cf801e2076e66b4943964daf2Chris Lattner if (Tmp1 != Node->getOperand(0)) { 1025475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 10266831a815999dde4cf801e2076e66b4943964daf2Chris Lattner Ops[0] = Tmp1; 1027f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 10286831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1029fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10306831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Remember that the CALLSEQ_START is legalized. 10314b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(0), Result); 10324b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) // If this has a flag result, remember it. 10334b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner AddLegalizedOperand(Op.getValue(1), Result.getValue(1)); 1034fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10356831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Now that the callseq_start and all of the non-call nodes above this call 1036fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // sequence have been legalized, legalize the call itself. During this 10376831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // process, no libcalls can/will be inserted, guaranteeing that no calls 10386831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // can overlap. 10396831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "Inconsistent sequentialization of calls!"); 10406831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Note that we are selecting this call! 1041475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LastCALLSEQ_END = SDValue(CallEnd, 0); 10426831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = true; 1043fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10446831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call, starting from the CALLSEQ_END. 10456831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(LastCALLSEQ_END); 10466831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "CALLSEQ_END should have cleared this!"); 10476831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return Result; 10486831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 104916cd04d26c53c6f81313cafb85f6c0e7a07cdff6Chris Lattner case ISD::CALLSEQ_END: 10506831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // If the CALLSEQ_START node hasn't been legalized first, legalize it. This 10516831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // will cause this node to be legalized as well as handling libcalls right. 1052ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (LastCALLSEQ_END.getNode() != Node) { 1053475871a144eb604ddaf37503397ba0941442e5fbDan Gohman LegalizeOp(SDValue(FindCallStartFromCallEnd(Node), 0)); 1054475871a144eb604ddaf37503397ba0941442e5fbDan Gohman DenseMap<SDValue, SDValue>::iterator I = LegalizedNodes.find(Op); 10556831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(I != LegalizedNodes.end() && 10566831a815999dde4cf801e2076e66b4943964daf2Chris Lattner "Legalizing the call start should have legalized this node!"); 10576831a815999dde4cf801e2076e66b4943964daf2Chris Lattner return I->second; 10586831a815999dde4cf801e2076e66b4943964daf2Chris Lattner } 1059fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1060fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // Otherwise, the call start has been legalized and everything is going 10616831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // according to plan. Just legalize ourselves normally here. 10623e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. 106370814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // Do not try to legalize the target-specific arguments (#1+), except for 106470814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner // an optional flag input. 106570814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Node->getOperand(Node->getNumOperands()-1).getValueType() != MVT::Flag){ 106670814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0)) { 1067475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 106870814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 1069f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 107070814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 107170814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } else { 107270814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 = LegalizeOp(Node->getOperand(Node->getNumOperands()-1)); 107370814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner if (Tmp1 != Node->getOperand(0) || 107470814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Tmp2 != Node->getOperand(Node->getNumOperands()-1)) { 1075475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SmallVector<SDValue, 8> Ops(Node->op_begin(), Node->op_end()); 107670814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops[0] = Tmp1; 107770814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner Ops.back() = Tmp2; 1078f06f35e30b4c4d7db304f717a3d4dc6595fbd078Chris Lattner Result = DAG.UpdateNodeOperands(Result, &Ops[0], Ops.size()); 107970814bc38435d61a8c7cc32f2375c09e21f12a8aChris Lattner } 10806a5428934ba6159c1acc541944332e51a6cfa59aChris Lattner } 10814b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner assert(IsLegalizingCall && "Call sequence imbalance between start/end?"); 10826831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // This finishes up call legalization. 10836831a815999dde4cf801e2076e66b4943964daf2Chris Lattner IsLegalizingCall = false; 1084fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 10854b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner // If the CALLSEQ_END node has a flag, remember that we legalized it. 1086475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Result.getValue(0)); 10874b653a0405bb16b555334d134c1eb8a97366ec3dChris Lattner if (Node->getNumValues() == 2) 1088475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Result.getValue(1)); 108999a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Result.getValue(Op.getResNo()); 1090f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::LOAD: { 1091466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng LoadSDNode *LD = cast<LoadSDNode>(Node); 1092466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp1 = LegalizeOp(LD->getChain()); // Legalize the chain. 1093466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp2 = LegalizeOp(LD->getBasePtr()); // Legalize the base pointer. 10942d86ea21dd76647cb054fd5d27df9e49efc672b6Andrew Lenharth 1095466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng ISD::LoadExtType ExtType = LD->getExtensionType(); 1096466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng if (ExtType == ISD::NON_EXTLOAD) { 109783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = Node->getValueType(0); 1098466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp2, LD->getOffset()); 1099466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp3 = Result.getValue(0); 1100466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng Tmp4 = Result.getValue(1); 1101fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1102466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng switch (TLI.getOperationAction(Node->getOpcode(), VT)) { 1103c25e7581b9b8088910da31702d4ca21c4734c6d7Torok Edwin default: LLVM_UNREACHABLE("This action is not supported yet!"); 1104f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1105f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned load and the target doesn't support it, 1106f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1107f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (!TLI.allowsUnalignedMemoryAccesses()) { 1108f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio unsigned ABIAlignment = TLI.getTargetData()-> 1109d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson getABITypeAlignment(LD->getMemoryVT().getTypeForMVT( 1110d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson *DAG.getContext())); 1111f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (LD->getAlignment() < ABIAlignment){ 1112ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), DAG, 1113f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio 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)) { 1273c25e7581b9b8088910da31702d4ca21c4734c6d7Torok 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()-> 1293d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson getABITypeAlignment(LD->getMemoryVT().getTypeForMVT( 1294d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson *DAG.getContext())); 1295f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (LD->getAlignment() < ABIAlignment){ 1296ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandUnalignedLoad(cast<LoadSDNode>(Result.getNode()), DAG, 1297f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands TLI); 1298f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = Result.getOperand(0); 1299f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = Result.getOperand(1); 1300f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Tmp1); 1301f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Tmp2); 1302f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1303f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1304f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1305f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 1306f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands case TargetLowering::Expand: 1307f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // f64 = EXTLOAD f32 should expand to LOAD, FP_EXTEND 1308f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (SrcVT == MVT::f32 && Node->getValueType(0) == MVT::f64) { 1309ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen SDValue Load = DAG.getLoad(SrcVT, dl, Tmp1, Tmp2, LD->getSrcValue(), 1310f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValueOffset(), 1311f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->isVolatile(), LD->getAlignment()); 1312fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.getNode(ISD::FP_EXTEND, dl, 1313ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Node->getValueType(0), Load); 1314f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(Result); // Relegalize new nodes. 1315f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Load.getValue(1)); 1316f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands break; 1317f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands } 1318f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands assert(ExtType != ISD::EXTLOAD &&"EXTLOAD should always be supported!"); 1319f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // Turn the unsupported load into an EXTLOAD followed by an explicit 1320f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands // zero/sign extend inreg. 1321ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getExtLoad(ISD::EXTLOAD, dl, Node->getValueType(0), 1322f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1, Tmp2, LD->getSrcValue(), 1323f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->getSrcValueOffset(), SrcVT, 1324f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands LD->isVolatile(), LD->getAlignment()); 1325475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue ValRes; 1326f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands if (ExtType == ISD::SEXTLOAD) 1327ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen ValRes = DAG.getNode(ISD::SIGN_EXTEND_INREG, dl, 1328ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result.getValueType(), 1329f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Result, DAG.getValueType(SrcVT)); 1330f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands else 1331ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen ValRes = DAG.getZeroExtendInReg(Result, dl, SrcVT); 1332f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp1 = LegalizeOp(ValRes); // Relegalize new nodes. 1333f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands Tmp2 = LegalizeOp(Result.getValue(1)); // Relegalize new nodes. 1334466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng break; 1335466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng } 13369d416f713e8b9e4f0c0c2b3f6f57ce2dd8993209Andrew Lenharth } 1337f9c98e650d2795b8edfae8e1560c221029df218bDuncan Sands 1338466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // Since loads produce two values, make sure to remember that we legalized 1339466685d41a9ea4905b9486fea38e83802e46f196Evan Cheng // both of them. 1340475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 0), Tmp1); 1341475871a144eb604ddaf37503397ba0941442e5fbDan Gohman AddLegalizedOperand(SDValue(Node, 1), Tmp2); 134299a6cb92d173c142073416c81efe6d3daeb80b49Gabor Greif return Op.getResNo() ? Tmp2 : Tmp1; 134301ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 134401ff7216dd7829d4094754086baf28aa2d7149acChris Lattner } 1345f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng case ISD::STORE: { 13468b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng StoreSDNode *ST = cast<StoreSDNode>(Node); 13478b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = LegalizeOp(ST->getChain()); // Legalize the chain. 13488b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp2 = LegalizeOp(ST->getBasePtr()); // Legalize the pointer. 1349d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman int SVOffset = ST->getSrcValueOffset(); 1350d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman unsigned Alignment = ST->getAlignment(); 1351d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman bool isVolatile = ST->isVolatile(); 13528b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 13538b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng if (!ST->isTruncatingStore()) { 13547ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (SDNode *OptStore = OptimizeFloatStore(ST).getNode()) { 13557ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Result = SDValue(OptStore, 0); 13567ef3d178660b82d1571757e49f44b004d772a116Eli Friedman break; 1357d93d46ee7e0a0e539d42139b85c71b2b8c3968feChris Lattner } 1358fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1359957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman { 13608b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp3 = LegalizeOp(ST->getValue()); 1361fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2, 13628b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng ST->getOffset()); 13638b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng 136483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = Tmp3.getValueType(); 13658b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng switch (TLI.getOperationAction(ISD::STORE, VT)) { 1366c25e7581b9b8088910da31702d4ca21c4734c6d7Torok Edwin default: LLVM_UNREACHABLE("This action is not supported yet!"); 1367f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio case TargetLowering::Legal: 1368f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // If this is an unaligned store and the target doesn't support it, 1369f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio // expand it. 1370f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (!TLI.allowsUnalignedMemoryAccesses()) { 1371f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio unsigned ABIAlignment = TLI.getTargetData()-> 1372d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson getABITypeAlignment(ST->getMemoryVT().getTypeForMVT( 1373d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson *DAG.getContext())); 1374f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio if (ST->getAlignment() < ABIAlignment) 1375ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), DAG, 1376f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio TLI); 1377f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 1378f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio break; 13798b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Custom: 13808b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng Tmp1 = TLI.LowerOperation(Result, DAG); 1381ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif if (Tmp1.getNode()) Result = Tmp1; 13828b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 13838b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng case TargetLowering::Promote: 138483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(VT.isVector() && "Unknown legal promote case!"); 1385fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Tmp3 = DAG.getNode(ISD::BIT_CONVERT, dl, 13868b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng TLI.getTypeToPromoteTo(ISD::STORE, VT), Tmp3); 1387ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, 1388d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman ST->getSrcValue(), SVOffset, isVolatile, 1389d6fd1bc122ba791c698255d8be158b8ec424e248Dan Gohman Alignment); 13908b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng break; 13918b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 13922efce0a589e2a688a1a06b5dc2ed0db32ae79924Chris Lattner break; 1393f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 13948b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } else { 1395957bffaeca6a0e2ccc684d753df1d87e8e053fe2Eli Friedman Tmp3 = LegalizeOp(ST->getValue()); 13967e857201f387d004571e6058e2ea709163500f38Duncan Sands 139783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT StVT = ST->getMemoryVT(); 139883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned StWidth = StVT.getSizeInBits(); 13997e857201f387d004571e6058e2ea709163500f38Duncan Sands 140083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands if (StWidth != StVT.getStoreSizeInBits()) { 14017e857201f387d004571e6058e2ea709163500f38Duncan Sands // Promote to a byte-sized store with upper bits zero if not 14027e857201f387d004571e6058e2ea709163500f38Duncan Sands // storing an integral number of bytes. For example, promote 14037e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i1 X -> TRUNCSTORE:i8 (and X, 1) 140483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NVT = MVT::getIntegerVT(StVT.getStoreSizeInBits()); 1405ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getZeroExtendInReg(Tmp3, dl, StVT); 1406ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14077e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset, NVT, isVolatile, Alignment); 14087e857201f387d004571e6058e2ea709163500f38Duncan Sands } else if (StWidth & (StWidth - 1)) { 14097e857201f387d004571e6058e2ea709163500f38Duncan Sands // If not storing a power-of-2 number of bits, expand as two stores. 141083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(StVT.isExtended() && !StVT.isVector() && 14117e857201f387d004571e6058e2ea709163500f38Duncan Sands "Unsupported truncstore!"); 14127e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned RoundWidth = 1 << Log2_32(StWidth); 14137e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(RoundWidth < StWidth); 14147e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned ExtraWidth = StWidth - RoundWidth; 14157e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(ExtraWidth < RoundWidth); 14167e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(!(RoundWidth % 8) && !(ExtraWidth % 8) && 14177e857201f387d004571e6058e2ea709163500f38Duncan Sands "Store size not an integral number of bytes!"); 141883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT RoundVT = MVT::getIntegerVT(RoundWidth); 141983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT ExtraVT = MVT::getIntegerVT(ExtraWidth); 1420475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Lo, Hi; 14217e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned IncrementSize; 14227e857201f387d004571e6058e2ea709163500f38Duncan Sands 14237e857201f387d004571e6058e2ea709163500f38Duncan Sands if (TLI.isLittleEndian()) { 14247e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 X, TRUNCSTORE@+2:i8 (srl X, 16) 14257e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the bottom RoundWidth bits. 1426ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14277e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset, RoundVT, 14287e857201f387d004571e6058e2ea709163500f38Duncan Sands isVolatile, Alignment); 14297e857201f387d004571e6058e2ea709163500f38Duncan Sands 14307e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14317e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1432ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14337e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1434ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 14357e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(RoundWidth, TLI.getShiftAmountTy())); 1436ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), 14377e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset + IncrementSize, ExtraVT, isVolatile, 14387e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 14397e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 14407e857201f387d004571e6058e2ea709163500f38Duncan Sands // Big endian - avoid unaligned stores. 14417e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i24 X -> TRUNCSTORE:i16 (srl X, 8), TRUNCSTORE@+2:i8 X 14427e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the top RoundWidth bits. 1443ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getNode(ISD::SRL, dl, Tmp3.getValueType(), Tmp3, 14447e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getConstant(ExtraWidth, TLI.getShiftAmountTy())); 1445ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Hi = DAG.getTruncStore(Tmp1, dl, Hi, Tmp2, ST->getSrcValue(), 1446ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen SVOffset, RoundVT, isVolatile, Alignment); 14477e857201f387d004571e6058e2ea709163500f38Duncan Sands 14487e857201f387d004571e6058e2ea709163500f38Duncan Sands // Store the remaining ExtraWidth bits. 14497e857201f387d004571e6058e2ea709163500f38Duncan Sands IncrementSize = RoundWidth / 8; 1450ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp2 = DAG.getNode(ISD::ADD, dl, Tmp2.getValueType(), Tmp2, 14517e857201f387d004571e6058e2ea709163500f38Duncan Sands DAG.getIntPtrConstant(IncrementSize)); 1452ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Lo = DAG.getTruncStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 14537e857201f387d004571e6058e2ea709163500f38Duncan Sands SVOffset + IncrementSize, ExtraVT, isVolatile, 14547e857201f387d004571e6058e2ea709163500f38Duncan Sands MinAlign(Alignment, IncrementSize)); 14557e857201f387d004571e6058e2ea709163500f38Duncan Sands } 1456c7029805ef35ce9805931067b841e6af11db382eChris Lattner 14577e857201f387d004571e6058e2ea709163500f38Duncan Sands // The order of the stores doesn't matter. 1458ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, Lo, Hi); 14597e857201f387d004571e6058e2ea709163500f38Duncan Sands } else { 14607e857201f387d004571e6058e2ea709163500f38Duncan Sands if (Tmp1 != ST->getChain() || Tmp3 != ST->getValue() || 14617e857201f387d004571e6058e2ea709163500f38Duncan Sands Tmp2 != ST->getBasePtr()) 14627e857201f387d004571e6058e2ea709163500f38Duncan Sands Result = DAG.UpdateNodeOperands(Result, Tmp1, Tmp3, Tmp2, 14637e857201f387d004571e6058e2ea709163500f38Duncan Sands ST->getOffset()); 14647e857201f387d004571e6058e2ea709163500f38Duncan Sands 14657e857201f387d004571e6058e2ea709163500f38Duncan Sands switch (TLI.getTruncStoreAction(ST->getValue().getValueType(), StVT)) { 1466c25e7581b9b8088910da31702d4ca21c4734c6d7Torok Edwin default: LLVM_UNREACHABLE("This action is not supported yet!"); 14677e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Legal: 14687e857201f387d004571e6058e2ea709163500f38Duncan Sands // If this is an unaligned store and the target doesn't support it, 14697e857201f387d004571e6058e2ea709163500f38Duncan Sands // expand it. 14707e857201f387d004571e6058e2ea709163500f38Duncan Sands if (!TLI.allowsUnalignedMemoryAccesses()) { 14717e857201f387d004571e6058e2ea709163500f38Duncan Sands unsigned ABIAlignment = TLI.getTargetData()-> 1472d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson getABITypeAlignment(ST->getMemoryVT().getTypeForMVT( 1473d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson *DAG.getContext())); 14747e857201f387d004571e6058e2ea709163500f38Duncan Sands if (ST->getAlignment() < ABIAlignment) 1475ba36cb5242eb02b12b277f82b9efe497f7da4d7fGabor Greif Result = ExpandUnalignedStore(cast<StoreSDNode>(Result.getNode()), DAG, 14767e857201f387d004571e6058e2ea709163500f38Duncan Sands TLI); 14777e857201f387d004571e6058e2ea709163500f38Duncan Sands } 14787e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 14797e857201f387d004571e6058e2ea709163500f38Duncan Sands case TargetLowering::Custom: 14807e857201f387d004571e6058e2ea709163500f38Duncan Sands Result = TLI.LowerOperation(Result, DAG); 14817e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 14827e857201f387d004571e6058e2ea709163500f38Duncan Sands case Expand: 14837e857201f387d004571e6058e2ea709163500f38Duncan Sands // TRUNCSTORE:i16 i32 -> STORE i16 14847e857201f387d004571e6058e2ea709163500f38Duncan Sands assert(isTypeLegal(StVT) && "Do not know how to expand this store!"); 1485ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Tmp3 = DAG.getNode(ISD::TRUNCATE, dl, StVT, Tmp3); 1486ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen Result = DAG.getStore(Tmp1, dl, Tmp3, Tmp2, ST->getSrcValue(), 1487ca57b84729303d6f0c5abf951563efcde97010cdDale Johannesen SVOffset, isVolatile, Alignment); 14887e857201f387d004571e6058e2ea709163500f38Duncan Sands break; 1489f3c13c82e34b8e90f1080cfe06c6f1328a2d44e1Lauro Ramos Venancio } 14908b2794aeff151be8cdbd44786c1d0f94f8f2e427Evan Cheng } 14913e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner } 14923e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner break; 1493f3fd9fe20dbcb40f3dffc1518ab955a0b5d6fa23Evan Cheng } 149445b8caf1c5a1fd8337038d64c6da8fba2d299fdfChris Lattner } 14954ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner assert(Result.getValueType() == Op.getValueType() && 14964ddd283f6928fc337c1bf3277566d7b31526e8d9Chris Lattner "Bad legalization!"); 1497fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1498456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner // Make sure that the generated code is itself legal. 1499456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner if (Result != Op) 1500456a93afcec7740c45cafa8354317f7b17987a6dChris Lattner Result = LegalizeOp(Result); 15013e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 150245982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // Note that LegalizeOp may be reentered even from single-use nodes, which 150345982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner // means that we always must cache transformed nodes. 150445982dad53cd184fe8947a1b0206b0b16964f359Chris Lattner AddLegalizedOperand(Op, Result); 15053e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner return Result; 15063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 15073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 15083d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli FriedmanSDValue SelectionDAGLegalize::ExpandExtractFromVectorThroughStack(SDValue Op) { 15093d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Vec = Op.getOperand(0); 15103d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Idx = Op.getOperand(1); 15113d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DebugLoc dl = Op.getDebugLoc(); 15123d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Store the value to a temporary stack slot, then LOAD the returned part. 15133d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue StackPtr = DAG.CreateStackTemporary(Vec.getValueType()); 15143d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman SDValue Ch = DAG.getStore(DAG.getEntryNode(), dl, Vec, StackPtr, NULL, 0); 15153d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15163d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman // Add the offset to the index. 15172a35b1c54ba55a917e01e0043efcf67e20505953Eli Friedman unsigned EltSize = 15182a35b1c54ba55a917e01e0043efcf67e20505953Eli Friedman Vec.getValueType().getVectorElementType().getSizeInBits()/8; 15193d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::MUL, dl, Idx.getValueType(), Idx, 15203d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman DAG.getConstant(EltSize, Idx.getValueType())); 15213d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15223d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman if (Idx.getValueType().bitsGT(TLI.getPointerTy())) 15233d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::TRUNCATE, dl, TLI.getPointerTy(), Idx); 15243d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman else 15253d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman Idx = DAG.getNode(ISD::ZERO_EXTEND, dl, TLI.getPointerTy(), Idx); 15263d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15273d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman StackPtr = DAG.getNode(ISD::ADD, dl, Idx.getValueType(), Idx, StackPtr); 15283d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 1529c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman if (Op.getValueType().isVector()) 1530c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman return DAG.getLoad(Op.getValueType(), dl, Ch, StackPtr, NULL, 0); 1531c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman else 1532c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman return DAG.getExtLoad(ISD::EXTLOAD, dl, Op.getValueType(), Ch, StackPtr, 1533c680ac90032bf455b2bba77de538fccea08eb267Eli Friedman NULL, 0, Vec.getValueType().getVectorElementType()); 15343d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman} 15353d43b3f6d7e1d3516052f20bf2d14727ebddb8ffEli Friedman 15367ef3d178660b82d1571757e49f44b004d772a116Eli FriedmanSDValue SelectionDAGLegalize::ExpandVectorBuildThroughStack(SDNode* Node) { 15377ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // We can't handle this case efficiently. Allocate a sufficiently 15387ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // aligned object on the stack, store each element into it, then load 15397ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // the result as a vector. 15407ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Create the stack frame object. 15417ef3d178660b82d1571757e49f44b004d772a116Eli Friedman MVT VT = Node->getValueType(0); 15427ef3d178660b82d1571757e49f44b004d772a116Eli Friedman MVT OpVT = Node->getOperand(0).getValueType(); 15437ef3d178660b82d1571757e49f44b004d772a116Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15447ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue FIPtr = DAG.CreateStackTemporary(VT); 15457ef3d178660b82d1571757e49f44b004d772a116Eli Friedman int FI = cast<FrameIndexSDNode>(FIPtr.getNode())->getIndex(); 15467ef3d178660b82d1571757e49f44b004d772a116Eli Friedman const Value *SV = PseudoSourceValue::getFixedStack(FI); 15477ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15487ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Emit a store of each element to the stack slot. 15497ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SmallVector<SDValue, 8> Stores; 15507ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned TypeByteSize = OpVT.getSizeInBits() / 8; 15517ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Store (in the right endianness) the elements to memory. 15527ef3d178660b82d1571757e49f44b004d772a116Eli Friedman for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 15537ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Ignore undef elements. 15547ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (Node->getOperand(i).getOpcode() == ISD::UNDEF) continue; 15557ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15567ef3d178660b82d1571757e49f44b004d772a116Eli Friedman unsigned Offset = TypeByteSize*i; 15577ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15587ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue Idx = DAG.getConstant(Offset, FIPtr.getValueType()); 15597ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Idx = DAG.getNode(ISD::ADD, dl, FIPtr.getValueType(), FIPtr, Idx); 15607ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15617ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Stores.push_back(DAG.getStore(DAG.getEntryNode(), dl, Node->getOperand(i), 15627ef3d178660b82d1571757e49f44b004d772a116Eli Friedman Idx, SV, Offset)); 15637ef3d178660b82d1571757e49f44b004d772a116Eli Friedman } 15647ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15657ef3d178660b82d1571757e49f44b004d772a116Eli Friedman SDValue StoreChain; 15667ef3d178660b82d1571757e49f44b004d772a116Eli Friedman if (!Stores.empty()) // Not all undef elements? 15677ef3d178660b82d1571757e49f44b004d772a116Eli Friedman StoreChain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other, 15687ef3d178660b82d1571757e49f44b004d772a116Eli Friedman &Stores[0], Stores.size()); 15697ef3d178660b82d1571757e49f44b004d772a116Eli Friedman else 15707ef3d178660b82d1571757e49f44b004d772a116Eli Friedman StoreChain = DAG.getEntryNode(); 15717ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15727ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Result is a load from the stack slot. 15737ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return DAG.getLoad(VT, dl, StoreChain, FIPtr, SV, 0); 15747ef3d178660b82d1571757e49f44b004d772a116Eli Friedman} 15757ef3d178660b82d1571757e49f44b004d772a116Eli Friedman 15764bc8c718218159fe410462f6e3670e7cb76c0c04Eli FriedmanSDValue SelectionDAGLegalize::ExpandFCOPYSIGN(SDNode* Node) { 15774bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 15784bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = Node->getOperand(0); 15794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = Node->getOperand(1); 15804bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert((Tmp2.getValueType() == MVT::f32 || 15814bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp2.getValueType() == MVT::f64) && 15824bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman "Ugly special-cased code!"); 15834bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Get the sign bit of the RHS. 15844bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignBit; 15854bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman MVT IVT = Tmp2.getValueType() == MVT::f64 ? MVT::i64 : MVT::i32; 15864bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (isTypeLegal(IVT)) { 15874bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = DAG.getNode(ISD::BIT_CONVERT, dl, IVT, Tmp2); 15884bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else { 15894bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert(isTypeLegal(TLI.getPointerTy()) && 15904bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman (TLI.getPointerTy() == MVT::i32 || 15914bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getPointerTy() == MVT::i64) && 15924bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman "Legal type for load?!"); 15934bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue StackPtr = DAG.CreateStackTemporary(Tmp2.getValueType()); 15944bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue StorePtr = StackPtr, LoadPtr = StackPtr; 15954bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Ch = 15964bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getStore(DAG.getEntryNode(), dl, Tmp2, StorePtr, NULL, 0); 15974bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Tmp2.getValueType() == MVT::f64 && TLI.isLittleEndian()) 15984bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LoadPtr = DAG.getNode(ISD::ADD, dl, StackPtr.getValueType(), 15994bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LoadPtr, DAG.getIntPtrConstant(4)); 16004bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = DAG.getExtLoad(ISD::SEXTLOAD, dl, TLI.getPointerTy(), 16014bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Ch, LoadPtr, NULL, 0, MVT::i32); 16024bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16034bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit = 16044bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getSetCC(dl, TLI.getSetCCResultType(SignBit.getValueType()), 16054bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SignBit, DAG.getConstant(0, SignBit.getValueType()), 16064bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETLT); 16074bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Get the absolute value of the result. 16084bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue AbsVal = DAG.getNode(ISD::FABS, dl, Tmp1.getValueType(), Tmp1); 16094bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Select between the nabs and abs value based on the sign bit of 16104bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // the input. 16114bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getNode(ISD::SELECT, dl, AbsVal.getValueType(), SignBit, 16124bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getNode(ISD::FNEG, dl, AbsVal.getValueType(), AbsVal), 16134bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman AbsVal); 16144bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16154bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16164bc8c718218159fe410462f6e3670e7cb76c0c04Eli FriedmanSDValue SelectionDAGLegalize::ExpandDBG_STOPPOINT(SDNode* Node) { 16174bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 16184bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DwarfWriter *DW = DAG.getDwarfWriter(); 16194bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman bool useDEBUG_LOC = TLI.isOperationLegalOrCustom(ISD::DEBUG_LOC, 16204bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman MVT::Other); 16214bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman bool useLABEL = TLI.isOperationLegalOrCustom(ISD::DBG_LABEL, MVT::Other); 16224bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16234bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman const DbgStopPointSDNode *DSP = cast<DbgStopPointSDNode>(Node); 16244bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman GlobalVariable *CU_GV = cast<GlobalVariable>(DSP->getCompileUnit()); 16254bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (DW && (useDEBUG_LOC || useLABEL) && !CU_GV->isDeclaration()) { 16264bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DICompileUnit CU(cast<GlobalVariable>(DSP->getCompileUnit())); 16274bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16284bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Line = DSP->getLine(); 16294bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Col = DSP->getColumn(); 16304bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16314bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (OptLevel == CodeGenOpt::None) { 16324bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // A bit self-referential to have DebugLoc on Debug_Loc nodes, but it 16334bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // won't hurt anything. 16344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (useDEBUG_LOC) { 16354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getNode(ISD::DEBUG_LOC, dl, MVT::Other, Node->getOperand(0), 16364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getConstant(Line, MVT::i32), 16374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getConstant(Col, MVT::i32), 16384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getSrcValue(CU.getGV())); 16394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else { 16404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned ID = DW->RecordSourceLine(Line, Col, CU); 16414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return DAG.getLabel(ISD::DBG_LABEL, dl, Node->getOperand(0), ID); 16424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16444bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 16454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman return Node->getOperand(0); 16464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedmanvoid SelectionDAGLegalize::ExpandDYNAMIC_STACKALLOC(SDNode* Node, 16494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SmallVectorImpl<SDValue> &Results) { 16504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned SPReg = TLI.getStackPointerRegisterToSaveRestore(); 16514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman assert(SPReg && "Target cannot require DYNAMIC_STACKALLOC expansion and" 16524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman " not tell us which reg is the stack pointer!"); 16534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DebugLoc dl = Node->getDebugLoc(); 16544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman MVT VT = Node->getValueType(0); 16554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp1 = SDValue(Node, 0); 16564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp2 = SDValue(Node, 1); 16574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Tmp3 = Node->getOperand(2); 16584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Tmp1.getOperand(0); 16594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Chain the dynamic stack allocation so that it doesn't modify the stack 16614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // pointer when other instructions are using the stack. 16624bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(0, true)); 16634bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Size = Tmp2.getOperand(1); 16654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SP = DAG.getCopyFromReg(Chain, dl, SPReg, VT); 16664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = SP.getValue(1); 16674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned Align = cast<ConstantSDNode>(Tmp3)->getZExtValue(); 16684bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned StackAlign = 16694bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getTargetMachine().getFrameInfo()->getStackAlignment(); 16704bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Align > StackAlign) 16714bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SP = DAG.getNode(ISD::AND, dl, VT, SP, 16724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getConstant(-(uint64_t)Align, VT)); 16734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, SP, Size); // Value 16744bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Chain = DAG.getCopyToReg(Chain, dl, SPReg, Tmp1); // Output chain 16754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16764bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp2 = DAG.getCALLSEQ_END(Chain, DAG.getIntPtrConstant(0, true), 16774bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman DAG.getIntPtrConstant(0, true), SDValue()); 16784bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 16804bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp2); 16814bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman} 16824bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 16837f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// LegalizeSetCCCondCode - Legalize a SETCC with given LHS and RHS and 16847f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// condition code CC on the current target. This routine assumes LHS and rHS 16857f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// have already been legalized by LegalizeSetCCOperands. It expands SETCC with 16867f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng/// illegal condition code into AND / OR of multiple SETCC values. 16877f042681764c6f8eae22781d8b4cb4c218a86b76Evan Chengvoid SelectionDAGLegalize::LegalizeSetCCCondCode(MVT VT, 16887f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng SDValue &LHS, SDValue &RHS, 1689bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue &CC, 1690bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen DebugLoc dl) { 16917f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng MVT OpVT = LHS.getValueType(); 16927f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CCCode = cast<CondCodeSDNode>(CC)->get(); 16937f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (TLI.getCondCodeAction(CCCode, OpVT)) { 1694c25e7581b9b8088910da31702d4ca21c4734c6d7Torok Edwin default: LLVM_UNREACHABLE("Unknown condition code action!"); 16957f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Legal: 16967f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // Nothing to do. 16977f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 16987f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng case TargetLowering::Expand: { 16997f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng ISD::CondCode CC1 = ISD::SETCC_INVALID, CC2 = ISD::SETCC_INVALID; 17007f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng unsigned Opc = 0; 17017f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng switch (CCCode) { 17027d696d80409aad20bb5da0fc4eccab941dd371d4Torok Edwin default: LLVM_UNREACHABLE("Don't know how to expand this condition!"); 1703e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETO; Opc = ISD::AND; break; 1704e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGT: CC1 = ISD::SETGT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1705e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOGE: CC1 = ISD::SETGE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1706e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLT: CC1 = ISD::SETLT; CC2 = ISD::SETO; Opc = ISD::AND; break; 1707e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETOLE: CC1 = ISD::SETLE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1708e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETONE: CC1 = ISD::SETNE; CC2 = ISD::SETO; Opc = ISD::AND; break; 1709e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUEQ: CC1 = ISD::SETEQ; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1710e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGT: CC1 = ISD::SETGT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1711e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUGE: CC1 = ISD::SETGE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1712e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULT: CC1 = ISD::SETLT; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1713e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETULE: CC1 = ISD::SETLE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 1714e7d238ea239e6ab8a2c60ecd27468f3cfc1bb08bDan Gohman case ISD::SETUNE: CC1 = ISD::SETNE; CC2 = ISD::SETUO; Opc = ISD::OR; break; 17157f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng // FIXME: Implement more expansions. 17167f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17177f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 1718bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC1 = DAG.getSetCC(dl, VT, LHS, RHS, CC1); 1719bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen SDValue SetCC2 = DAG.getSetCC(dl, VT, LHS, RHS, CC2); 1720bb5da918545efb54857a09c983a5a7f22a7e04d4Dale Johannesen LHS = DAG.getNode(Opc, dl, VT, SetCC1, SetCC2); 17217f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng RHS = SDValue(); 17227f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng CC = SDValue(); 17237f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng break; 17247f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17257f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng } 17267f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng} 17277f042681764c6f8eae22781d8b4cb4c218a86b76Evan Cheng 17281401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// EmitStackConvert - Emit a store/load combination to the stack. This stores 17291401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// SrcOp to a stack slot of type SlotVT, truncating it if needed. It then does 17301401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// a load from the stack slot to DestVT, extending it if needed. 17311401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner/// The resultant code need not be legal. 1732475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::EmitStackConvert(SDValue SrcOp, 1733475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT SlotVT, 17348a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen MVT DestVT, 17358a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 173635481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Create the stack frame object. 1737ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson unsigned SrcAlign = 1738ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getTargetData()->getPrefTypeAlignment(SrcOp.getValueType(). 1739d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson getTypeForMVT(*DAG.getContext())); 1740475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FIPtr = DAG.CreateStackTemporary(SlotVT, SrcAlign); 1741fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1742bbbbb9c3dd4160990f856854d16a3beaead1f354Dan Gohman FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(FIPtr); 174369de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman int SPFI = StackPtrFI->getIndex(); 174415b3830bcda4f9958abf1c65e6e1c64c5cbb484dDan Gohman const Value *SV = PseudoSourceValue::getFixedStack(SPFI); 174515b3830bcda4f9958abf1c65e6e1c64c5cbb484dDan Gohman 174683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SrcSize = SrcOp.getValueType().getSizeInBits(); 174783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned SlotSize = SlotVT.getSizeInBits(); 174883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned DestSize = DestVT.getSizeInBits(); 1749ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson unsigned DestAlign = 1750d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson TLI.getTargetData()->getPrefTypeAlignment(DestVT.getTypeForMVT( 1751d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson *DAG.getContext())); 1752fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17531401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // Emit a store to the stack slot. Use a truncstore if the input value is 17541401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner // later than DestVT. 1755475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Store; 1756fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17571401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SrcSize > SlotSize) 17588a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getTruncStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 175915b3830bcda4f9958abf1c65e6e1c64c5cbb484dDan Gohman SV, 0, SlotVT, false, SrcAlign); 17601401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner else { 17611401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SrcSize == SlotSize && "Invalid store"); 17628a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Store = DAG.getStore(DAG.getEntryNode(), dl, SrcOp, FIPtr, 176315b3830bcda4f9958abf1c65e6e1c64c5cbb484dDan Gohman SV, 0, false, SrcAlign); 17641401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner } 1765fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 176635481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner // Result is a load from the stack slot. 17671401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner if (SlotSize == DestSize) 17688a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(DestVT, dl, Store, FIPtr, SV, 0, false, DestAlign); 1769fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 17701401d15c99b284ead81b8476a6db95328c5f28fdChris Lattner assert(SlotSize < DestSize && "Unknown extension!"); 17718a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, Store, FIPtr, SV, 0, SlotVT, 1772364d73ddab43b699ab90240f11b7a2eb5cf69bd8Mon P Wang false, DestAlign); 177335481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner} 177435481892da1e5634bf497c8a0cabb1bb5a8b8fefChris Lattner 1775475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandSCALAR_TO_VECTOR(SDNode *Node) { 17768a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl = Node->getDebugLoc(); 17774352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // Create a vector sized/aligned stack slot, store the value to element #0, 17784352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner // then load the whole vector back out. 1779475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackPtr = DAG.CreateStackTemporary(Node->getValueType(0)); 178069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 1781bbbbb9c3dd4160990f856854d16a3beaead1f354Dan Gohman FrameIndexSDNode *StackPtrFI = cast<FrameIndexSDNode>(StackPtr); 178269de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman int SPFI = StackPtrFI->getIndex(); 178369de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 1784b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands SDValue Ch = DAG.getTruncStore(DAG.getEntryNode(), dl, Node->getOperand(0), 1785b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands StackPtr, 1786b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands PseudoSourceValue::getFixedStack(SPFI), 0, 1787b10b5ac8d9da43ca2db61401a20af6b676c98438Duncan Sands Node->getValueType(0).getVectorElementType()); 17888a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(Node->getValueType(0), dl, Ch, StackPtr, 1789a54cf176613f9ae8301519a61b8935652c0fb8aeDan Gohman PseudoSourceValue::getFixedStack(SPFI), 0); 17904352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner} 17914352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 17924352cc9e217e4482ad53f5a7b92c3543f569eb6eChris Lattner 1793ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner/// ExpandBUILD_VECTOR - Expand a BUILD_VECTOR node on targets that don't 179407a96765daedf180a7102d39fe56c499878312b7Dan Gohman/// support the operation, but do support the resultant vector type. 1795475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandBUILD_VECTOR(SDNode *Node) { 179626cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson unsigned NumElems = Node->getNumOperands(); 17977a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Value1, Value2; 179826cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson DebugLoc dl = Node->getDebugLoc(); 179926cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson MVT VT = Node->getValueType(0); 18007a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman MVT OpVT = Node->getOperand(0).getValueType(); 180126cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson MVT EltVT = VT.getVectorElementType(); 1802fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 1803fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // If the only non-undef value is the low element, turn this into a 180487100e0b83b808757bf44dabecd1d1048255d1adChris Lattner // SCALAR_TO_VECTOR node. If this is { X, X, X, X }, determine X. 1805ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner bool isOnlyLowElement = true; 18067a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman bool MoreThanTwoValues = false; 18072eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner bool isConstant = true; 18087a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 1809475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue V = Node->getOperand(i); 18107a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 18117a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 18127a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (i > 0) 1813ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner isOnlyLowElement = false; 18147a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!isa<ConstantFPSDNode>(V) && !isa<ConstantSDNode>(V)) 18152eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner isConstant = false; 18167a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 18177a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) { 18187a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value1 = V; 18197a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (!Value2.getNode()) { 18207a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V != Value1) 18217a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Value2 = V; 18227a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } else if (V != Value1 && V != Value2) { 18237a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman MoreThanTwoValues = true; 18247a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 1825ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1826fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18277a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!Value1.getNode()) 18287a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getUNDEF(VT); 18297a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman 18307a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (isOnlyLowElement) 183126cbf9eb99c779b8992f4865c6cf308318d39723Bob Wilson return DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Node->getOperand(0)); 1832fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18332eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // If all elements are constants, create a load from the constant pool. 1834ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner if (isConstant) { 1835ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner std::vector<Constant*> CV; 1836033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng for (unsigned i = 0, e = NumElems; i != e; ++i) { 1837fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel if (ConstantFPSDNode *V = 1838ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner dyn_cast<ConstantFPSDNode>(Node->getOperand(i))) { 18394fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman CV.push_back(const_cast<ConstantFP *>(V->getConstantFPValue())); 1840fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel } else if (ConstantSDNode *V = 1841ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson dyn_cast<ConstantSDNode>(Node->getOperand(i))) { 18424fbd796a1251a27e6590765a0a34876f436a0af9Dan Gohman CV.push_back(const_cast<ConstantInt *>(V->getConstantIntValue())); 1843ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } else { 1844ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner assert(Node->getOperand(i).getOpcode() == ISD::UNDEF); 1845d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson const Type *OpNTy = OpVT.getTypeForMVT(*DAG.getContext()); 1846ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner CV.push_back(UndefValue::get(OpNTy)); 1847ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1848ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 18499d6565a5b1fbc4286d6ee638d8f47a3171a9ed7eReid Spencer Constant *CP = ConstantVector::get(CV); 1850475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(CP, TLI.getPointerTy()); 18511606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 18528a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getLoad(VT, dl, DAG.getEntryNode(), CPIdx, 185350284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, 185450284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman false, Alignment); 1855ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner } 1856fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18577a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (!MoreThanTwoValues) { 18587a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SmallVector<int, 8> ShuffleVec(NumElems, -1); 18597a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman for (unsigned i = 0; i < NumElems; ++i) { 18607a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue V = Node->getOperand(i); 18617a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (V.getOpcode() == ISD::UNDEF) 18627a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman continue; 18637a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman ShuffleVec[i] = V == Value1 ? 0 : NumElems; 18647a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman } 18657a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (TLI.isShuffleMaskLegal(ShuffleVec, Node->getValueType(0))) { 18662eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Get the splatted value into the low element of a vector register. 18677a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec1 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value1); 18687a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman SDValue Vec2; 18697a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman if (Value2.getNode()) 18707a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getNode(ISD::SCALAR_TO_VECTOR, dl, VT, Value2); 18717a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman else 18727a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman Vec2 = DAG.getUNDEF(VT); 1873fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18742eb8653157ccd318b357af74bfd517c76ef166b8Chris Lattner // Return shuffle(LowValVec, undef, <0,0,0,0>) 18757a5e55509b99d579d56d126a7b503ec6fe153a8fEli Friedman return DAG.getVectorShuffle(VT, dl, Vec1, Vec2, ShuffleVec.data()); 1876033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1877033e6816668da71ff0866a61f5c0a7e7e795d069Evan Cheng } 1878fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 18797ef3d178660b82d1571757e49f44b004d772a116Eli Friedman // Otherwise, we can't handle this case efficiently. 18807ef3d178660b82d1571757e49f44b004d772a116Eli Friedman return ExpandVectorBuildThroughStack(Node); 1881ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner} 1882ce87215131efcc68dcf7fca61055ad783a7aeb0eChris Lattner 188377e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// ExpandLibCall - Expand a node into a call to a libcall. If the result value 188477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// does not fit into a register, return the lo part and set the hi part to the 188577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// by-reg argument. If it does fit into a single register, return the result 188677e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner// and leave the Hi part unset. 1887475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLibCall(RTLIB::Libcall LC, SDNode *Node, 188847b41f7e20b6af7aaaf0e050200102d55d038b9dEli Friedman bool isSigned) { 18896831a815999dde4cf801e2076e66b4943964daf2Chris Lattner assert(!IsLegalizingCall && "Cannot overlap legalization of calls!"); 1890fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel // The input chain to this libcall is the entry node of the function. 18916831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalizing the call will automatically add the previous call to the 18926831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // dependence. 1893475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InChain = DAG.getEntryNode(); 1894fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 189577e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner TargetLowering::ArgListTy Args; 189647857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer TargetLowering::ArgListEntry Entry; 189777e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) { 189883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT ArgVT = Node->getOperand(i).getValueType(); 1899d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson const Type *ArgTy = ArgVT.getTypeForMVT(*DAG.getContext()); 1900fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Entry.Node = Node->getOperand(i); Entry.Ty = ArgTy; 1901d0b82b301d700217a716526f9329bb031e0d6578Anton Korobeynikov Entry.isSExt = isSigned; 190200fee65fd21f9615d1a604b8b7d42cd16a3f6b47Duncan Sands Entry.isZExt = !isSigned; 190347857812e29324a9d1560796a05b53d3a9217fd9Reid Spencer Args.push_back(Entry); 190477e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner } 1905056292fd738924f3f7703725d8f630983794b5a5Bill Wendling SDValue Callee = DAG.getExternalSymbol(TLI.getLibcallName(LC), 19060c39719bfc7d0b3e61fbd55e1115184a1d5f6ae7Mon P Wang TLI.getPointerTy()); 1907edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 19080d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner // Splice the libcall in wherever FindInputOutputChains tells us to. 1909d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson const Type *RetTy = Node->getValueType(0).getTypeForMVT(*DAG.getContext()); 1910ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson std::pair<SDValue, SDValue> CallInfo = 191186098bd6a63d2cdf0c9be9ef3151bd2728281fd7Dale Johannesen TLI.LowerCallTo(InChain, RetTy, isSigned, !isSigned, false, false, 19126b61cd185eeb90bec93f042535594132ae1f0f41Tilmann Scheller 0, CallingConv::C, false, Callee, Args, DAG, 19137d2ad624fa749a6d3edac0d94e9c107989c16304Dale Johannesen Node->getDebugLoc()); 19140d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 19156831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // Legalize the call sequence, starting with the chain. This will advance 19166831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // the LastCALLSEQ_END to the legalized version of the CALLSEQ_END node that 19176831a815999dde4cf801e2076e66b4943964daf2Chris Lattner // was added by LowerCallTo (guaranteeing proper serialization of calls). 19186831a815999dde4cf801e2076e66b4943964daf2Chris Lattner LegalizeOp(CallInfo.second); 191974807f2520715056be399a2bc59dfc8b6f8f3eb2Eli Friedman return CallInfo.first; 192022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 192122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 1922f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandFPLibCall(SDNode* Node, 1923f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F32, 1924f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F64, 1925f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_F80, 1926f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_PPCF128) { 1927f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 1928f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman switch (Node->getValueType(0).getSimpleVT()) { 1929c25e7581b9b8088910da31702d4ca21c4734c6d7Torok Edwin default: LLVM_UNREACHABLE("Unexpected request for libcall!"); 1930f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case MVT::f32: LC = Call_F32; break; 1931f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case MVT::f64: LC = Call_F64; break; 1932f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case MVT::f80: LC = Call_F80; break; 1933f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case MVT::ppcf128: LC = Call_PPCF128; break; 1934f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 1935f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, false); 1936f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 1937f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 1938f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli FriedmanSDValue SelectionDAGLegalize::ExpandIntLibCall(SDNode* Node, bool isSigned, 1939f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I16, 1940f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I32, 1941f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I64, 1942f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall Call_I128) { 1943f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::Libcall LC; 1944f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman switch (Node->getValueType(0).getSimpleVT()) { 1945c25e7581b9b8088910da31702d4ca21c4734c6d7Torok Edwin default: LLVM_UNREACHABLE("Unexpected request for libcall!"); 1946f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case MVT::i16: LC = Call_I16; break; 1947f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case MVT::i32: LC = Call_I32; break; 1948f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case MVT::i64: LC = Call_I64; break; 1949f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case MVT::i128: LC = Call_I128; break; 1950f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 1951f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman return ExpandLibCall(LC, Node, isSigned); 1952f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman} 1953f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman 195422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandLegalINT_TO_FP - This function is responsible for legalizing a 195522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// INT_TO_FP operation of the specified operand when the target requests that 195622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we expand it. At this point, we know that the result and operand types are 195722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target. 1958475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::ExpandLegalINT_TO_FP(bool isSigned, 1959475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0, 1960af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen MVT DestVT, 1961af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 196222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (Op0.getValueType() == MVT::i32) { 196322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // simple 32-bit [signed|unsigned] integer to float/double expansion 1964fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 196523594d4537fb88a963c6d6993af5027eac9bfbacChris Lattner // Get the stack frame index of a 8 byte buffer. 1966475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue StackSlot = DAG.CreateStackTemporary(MVT::f64); 1967fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 196822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // word offset constant for Hi/Lo address computation 1969475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue WordOff = DAG.getConstant(sizeof(int), TLI.getPointerTy()); 197022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // set up Hi and Lo (into buffer) address based on endian 1971475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Hi = StackSlot; 1972fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel SDValue Lo = DAG.getNode(ISD::ADD, dl, 1973ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson TLI.getPointerTy(), StackSlot, WordOff); 1974408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner if (TLI.isLittleEndian()) 1975408c428096df3a3970a8387f9dd258ae948663a6Chris Lattner std::swap(Hi, Lo); 1976fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 197722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // if signed map to unsigned space 1978475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Op0Mapped; 197922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) { 198022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // constant used to invert sign bit (signed to unsigned mapping) 1981475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue SignBit = DAG.getConstant(0x80000000u, MVT::i32); 1982af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Op0Mapped = DAG.getNode(ISD::XOR, dl, MVT::i32, Op0, SignBit); 198322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } else { 198422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Op0Mapped = Op0; 198522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 198622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the lo of the constructed double - based on integer input 1987af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Store1 = DAG.getStore(DAG.getEntryNode(), dl, 1988ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson Op0Mapped, Lo, NULL, 0); 198922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // initial hi portion of constructed double 1990475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue InitialHi = DAG.getConstant(0x43300000u, MVT::i32); 199122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // store the hi of the constructed double - biased exponent 1992af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Store2=DAG.getStore(Store1, dl, InitialHi, Hi, NULL, 0); 199322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // load the constructed double 1994af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Load = DAG.getLoad(MVT::f64, dl, Store2, StackSlot, NULL, 0); 199522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // FP constant to bias correct the final result 1996475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Bias = DAG.getConstantFP(isSigned ? 1997ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000080000000ULL) : 1998ec15bbfd2f8a3667313dcfa0f9a11497ae6732b8Bob Wilson BitsToDouble(0x4330000000000000ULL), 199922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner MVT::f64); 200022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // subtract the bias 2001af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Sub = DAG.getNode(ISD::FSUB, dl, MVT::f64, Load, Bias); 200222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // final result 2003475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Result; 200422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // handle final rounding 200522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (DestVT == MVT::f64) { 200622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // do nothing 200722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner Result = Sub; 20088e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands } else if (DestVT.bitsLT(MVT::f64)) { 2009af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_ROUND, dl, DestVT, Sub, 20100bd4893a0726889b942405262e53d06cf3fe3be8Chris Lattner DAG.getIntPtrConstant(0)); 20118e4eb09b1e3571965f49edcdfb56b1375b1b7551Duncan Sands } else if (DestVT.bitsGT(MVT::f64)) { 2012af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen Result = DAG.getNode(ISD::FP_EXTEND, dl, DestVT, Sub); 201322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 201422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Result; 201522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 201622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner assert(!isSigned && "Legalize cannot Expand SINT_TO_FP for i64 yet"); 2017af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Tmp1 = DAG.getNode(ISD::SINT_TO_FP, dl, DestVT, Op0); 201822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2019af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue SignSet = DAG.getSetCC(dl, TLI.getSetCCResultType(Op0.getValueType()), 20205480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands Op0, DAG.getConstant(0, Op0.getValueType()), 20215480c0469e5c0323ffb12f1ead2abd169d6cc0e7Duncan Sands ISD::SETLT); 2022475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Zero = DAG.getIntPtrConstant(0), Four = DAG.getIntPtrConstant(4); 2023af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue CstOffset = DAG.getNode(ISD::SELECT, dl, Zero.getValueType(), 202422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner SignSet, Four, Zero); 202522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 202622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the sign bit of the integer is set, the large number will be treated 202722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // as a negative number. To counteract this, the dynamic code adds an 202822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // offset depending on the data type. 202922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner uint64_t FF; 203083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands switch (Op0.getValueType().getSimpleVT()) { 2031c25e7581b9b8088910da31702d4ca21c4734c6d7Torok Edwin default: LLVM_UNREACHABLE("Unsupported integer type!"); 203222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case MVT::i8 : FF = 0x43800000ULL; break; // 2^8 (as a float) 203322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case MVT::i16: FF = 0x47800000ULL; break; // 2^16 (as a float) 203422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case MVT::i32: FF = 0x4F800000ULL; break; // 2^32 (as a float) 203522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case MVT::i64: FF = 0x5F800000ULL; break; // 2^64 (as a float) 203622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 203722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (TLI.isLittleEndian()) FF <<= 32; 2038d2e936a513b01b2c5df91a9c0d80070e8c752aceChris Lattner Constant *FudgeFactor = ConstantInt::get(Type::Int64Ty, FF); 203922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2040475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue CPIdx = DAG.getConstantPool(FudgeFactor, TLI.getPointerTy()); 20411606e8e4cd937e6de6681f686c266cf61722d972Evan Cheng unsigned Alignment = cast<ConstantPoolSDNode>(CPIdx)->getAlignment(); 2042af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen CPIdx = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), CPIdx, CstOffset); 204387a0f10dc7eff8cf5e83a754f75adf9cb3991435Dan Gohman Alignment = std::min(Alignment, 4u); 2044475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue FudgeInReg; 204522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (DestVT == MVT::f32) 2046af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen FudgeInReg = DAG.getLoad(MVT::f32, dl, DAG.getEntryNode(), CPIdx, 204750284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman PseudoSourceValue::getConstantPool(), 0, 204850284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman false, Alignment); 204922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner else { 205069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman FudgeInReg = 2051af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen LegalizeOp(DAG.getExtLoad(ISD::EXTLOAD, dl, DestVT, 205269de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman DAG.getEntryNode(), CPIdx, 20533069b8743769527ce7af6cfb6591a2f0fc2faee4Dan Gohman PseudoSourceValue::getConstantPool(), 0, 205450284d81f863a6576582e1a171a22eb0f012ddf3Dan Gohman MVT::f32, false, Alignment)); 205522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 205622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 2057af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(ISD::FADD, dl, DestVT, Tmp1, FudgeInReg); 205822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 205922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 206022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalINT_TO_FP - This function is responsible for legalizing a 206122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// *INT_TO_FP operation of the specified operand when the target requests that 206222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 206322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal UINT_TO_FP or SINT_TO_FP 206422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that takes a larger input. 2065475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalINT_TO_FP(SDValue LegalOp, 2066475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT DestVT, 2067af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2068af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 206922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate *INT_TO_FP operation to use. 207083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NewInTy = LegalOp.getValueType(); 207122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 207222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 207322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 207422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 207522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 207683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands NewInTy = (MVT::SimpleValueType)(NewInTy.getSimpleVT()+1); 207783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewInTy.isInteger() && "Ran out of possibilities!"); 207822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 207922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports SINT_TO_FP of this type, use it. 20803be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::SINT_TO_FP, NewInTy)) { 20813be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::SINT_TO_FP; 20823be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 208322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 208422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner if (isSigned) continue; 208522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 208622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If the target supports UINT_TO_FP of this type, use it. 20873be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::UINT_TO_FP, NewInTy)) { 20883be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman OpToUse = ISD::UINT_TO_FP; 20893be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman break; 209022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 209122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 209222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 209322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 209422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 209522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Okay, we found the operation and type to use. Zero extend our input to the 209622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // desired type then run the operation on it. 2097af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(OpToUse, dl, DestVT, 209822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner DAG.getNode(isSigned ? ISD::SIGN_EXTEND : ISD::ZERO_EXTEND, 2099af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen dl, NewInTy, LegalOp)); 210077e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 210177e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner 210222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// PromoteLegalFP_TO_INT - This function is responsible for legalizing a 210322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// FP_TO_*INT operation of the specified operand when the target requests that 210422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// we promote it. At this point, we know that the result and operand types are 210522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// legal for the target, and that there is a legal FP_TO_UINT or FP_TO_SINT 210622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// operation that returns a larger result. 2107475871a144eb604ddaf37503397ba0941442e5fbDan GohmanSDValue SelectionDAGLegalize::PromoteLegalFP_TO_INT(SDValue LegalOp, 2108475871a144eb604ddaf37503397ba0941442e5fbDan Gohman MVT DestVT, 2109af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen bool isSigned, 2110af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen DebugLoc dl) { 211122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // First step, figure out the appropriate FP_TO*INT operation to use. 211283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT NewOutTy = DestVT; 21139c32d3b798dc6caeebe6cea2effe80ca5e84e66eChris Lattner 211422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner unsigned OpToUse = 0; 2115e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 211622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Scan for the appropriate larger type to use. 211722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner while (1) { 211883ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands NewOutTy = (MVT::SimpleValueType)(NewOutTy.getSimpleVT()+1); 211983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands assert(NewOutTy.isInteger() && "Ran out of possibilities!"); 212066de05b606cf31f1f23ed0c4eb1f097738cd1506Chris Lattner 21213be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_SINT, NewOutTy)) { 212222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_SINT; 212322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 212422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 2125e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner 21263be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(ISD::FP_TO_UINT, NewOutTy)) { 212722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner OpToUse = ISD::FP_TO_UINT; 212822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner break; 2129e9c35e7309a8293852ba71d874fa4dc99e07e6feChris Lattner } 21300d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner 213122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // Otherwise, try a larger type. 2132a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner } 2133a88a260dbd874a3bdd3e47f4f15ab0d7c7803044Chris Lattner 2134fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel 213527a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Okay, we found the operation and type to use. 2136af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen SDValue Operation = DAG.getNode(OpToUse, dl, NewOutTy, LegalOp); 2137126d90770bdb17e6925b2fe26de99aa079b7b9b3Duncan Sands 213827a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // Truncate the result of the extended FP_TO_*INT operation to the desired 213927a6c7380fa4dfc8e1837a8dd67967d063b26544Chris Lattner // size. 2140af435274e56af687b51f33b5bc6f005fe99ad46fDale Johannesen return DAG.getNode(ISD::TRUNCATE, dl, DestVT, Operation); 214122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 214213689e2009e71f7982d1313ed699e0e6a50157d0Chris Lattner 214322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBSWAP - Open code the operations for BSWAP of the specified operation. 214422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 21458a782a2a8c2f0c82f292d03a3f707232b0bae27bDale JohannesenSDValue SelectionDAGLegalize::ExpandBSWAP(SDValue Op, DebugLoc dl) { 214683ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = Op.getValueType(); 214783ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT SHVT = TLI.getShiftAmountTy(); 2148475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp1, Tmp2, Tmp3, Tmp4, Tmp5, Tmp6, Tmp7, Tmp8; 214983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands switch (VT.getSimpleVT()) { 21507d696d80409aad20bb5da0fc4eccab941dd371d4Torok Edwin default: LLVM_UNREACHABLE("Unhandled Expand type in BSWAP!"); 215122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case MVT::i16: 21528a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21538a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21548a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp1, Tmp2); 215522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case MVT::i32: 21568a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21578a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21588a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21598a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21608a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(0xFF0000, VT)); 21618a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(0xFF00, VT)); 21628a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 21638a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 21648a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 216522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case MVT::i64: 21668a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(56, SHVT)); 21678a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(40, SHVT)); 21688a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21698a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::SHL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21708a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(8, SHVT)); 21718a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(24, SHVT)); 21728a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(40, SHVT)); 21738a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp1 = DAG.getNode(ISD::SRL, dl, VT, Op, DAG.getConstant(56, SHVT)); 21748a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp7 = DAG.getNode(ISD::AND, dl, VT, Tmp7, DAG.getConstant(255ULL<<48, VT)); 21758a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::AND, dl, VT, Tmp6, DAG.getConstant(255ULL<<40, VT)); 21768a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp5 = DAG.getNode(ISD::AND, dl, VT, Tmp5, DAG.getConstant(255ULL<<32, VT)); 21778a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::AND, dl, VT, Tmp4, DAG.getConstant(255ULL<<24, VT)); 21788a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp3 = DAG.getNode(ISD::AND, dl, VT, Tmp3, DAG.getConstant(255ULL<<16, VT)); 21798a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::AND, dl, VT, Tmp2, DAG.getConstant(255ULL<<8 , VT)); 21808a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp7); 21818a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp6 = DAG.getNode(ISD::OR, dl, VT, Tmp6, Tmp5); 21828a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp3); 21838a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2 = DAG.getNode(ISD::OR, dl, VT, Tmp2, Tmp1); 21848a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp8 = DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp6); 21858a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp4 = DAG.getNode(ISD::OR, dl, VT, Tmp4, Tmp2); 21868a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::OR, dl, VT, Tmp8, Tmp4); 21870d67f0c80f0295aa44f826ec1402ea73d6b4bd22Chris Lattner } 218877e77a6aa0ab25a812947aed477220dd11220a18Chris Lattner} 2189edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 219022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// ExpandBitCount - Expand the specified bitcount instruction into operations. 219122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner/// 2192fdc40a0a696c658d550d894ea03772e5f8af2c94Scott MichelSDValue SelectionDAGLegalize::ExpandBitCount(unsigned Opc, SDValue Op, 21938a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DebugLoc dl) { 219422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner switch (Opc) { 2195c25e7581b9b8088910da31702d4ca21c4734c6d7Torok Edwin default: LLVM_UNREACHABLE("Cannot expand this yet!"); 219622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTPOP: { 219722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner static const uint64_t mask[6] = { 219822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x5555555555555555ULL, 0x3333333333333333ULL, 219922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x0F0F0F0F0F0F0F0FULL, 0x00FF00FF00FF00FFULL, 220022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner 0x0000FFFF0000FFFFULL, 0x00000000FFFFFFFFULL 220122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner }; 220283ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = Op.getValueType(); 220383ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT ShVT = TLI.getShiftAmountTy(); 220483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 220522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 220622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner //x = (x & mask[i][len/8]) + (x >> (1 << i) & mask[i][len/8]) 2207b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands unsigned EltSize = VT.isVector() ? 2208b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands VT.getVectorElementType().getSizeInBits() : len; 2209b0d5cdd52e8448f769cd71aaee6a4b8592dc08b1Duncan Sands SDValue Tmp2 = DAG.getConstant(APInt(EltSize, mask[i]), VT); 2210475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2211fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::ADD, dl, VT, 2212e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::AND, dl, VT, Op, Tmp2), 22138a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::AND, dl, VT, 22148a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3), 22158a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Tmp2)); 221622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 221722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner return Op; 221822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 221922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTLZ: { 222022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we do this: 222122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 1); 222222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >> 2); 222322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // ... 222422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>16); 222522cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // x = x | (x >>32); // for 64-bit input 222622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // return popcount(~x); 222722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // 222822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // but see also: http://www.hackersdelight.org/HDcode/nlz.cc 222983ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = Op.getValueType(); 223083ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT ShVT = TLI.getShiftAmountTy(); 223183ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands unsigned len = VT.getSizeInBits(); 223222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner for (unsigned i = 0; (1U << i) <= (len / 2); ++i) { 2233475871a144eb604ddaf37503397ba0941442e5fbDan Gohman SDValue Tmp3 = DAG.getConstant(1ULL << i, ShVT); 2234fdc40a0a696c658d550d894ea03772e5f8af2c94Scott Michel Op = DAG.getNode(ISD::OR, dl, VT, Op, 2235e72c5964d5263f2489bf2c7e9d32f71271d205fcDale Johannesen DAG.getNode(ISD::SRL, dl, VT, Op, Tmp3)); 223622cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 22378a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen Op = DAG.getNOT(dl, Op, VT); 22388a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Op); 223922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 224022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner case ISD::CTTZ: { 224122cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // for now, we use: { return popcount(~x & (x - 1)); } 224222cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // unless the target has ctlz but not ctpop, in which case we use: 224322cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // { return 32 - nlz(~x & (x-1)); } 224422cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // see also http://www.hackersdelight.org/HDcode/ntz.cc 224583ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands MVT VT = Op.getValueType(); 22468a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen SDValue Tmp3 = DAG.getNode(ISD::AND, dl, VT, 22478a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNOT(dl, Op, VT), 22488a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::SUB, dl, VT, Op, 22497581bfa2757a3149c6d17c0fe592e5c3808aa843Bill Wendling DAG.getConstant(1, VT))); 225022cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner // If ISD::CTLZ is legal and CTPOP isn't, then do that instead. 2251f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman if (!TLI.isOperationLegalOrCustom(ISD::CTPOP, VT) && 2252f560ffae1f1f6591859c7b70636a3eca6c03f083Dan Gohman TLI.isOperationLegalOrCustom(ISD::CTLZ, VT)) 22538a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::SUB, dl, VT, 225483ec4b6711980242ef3c55a4fa36b2d7a39c1bfbDuncan Sands DAG.getConstant(VT.getSizeInBits(), VT), 22558a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen DAG.getNode(ISD::CTLZ, dl, VT, Tmp3)); 22568a782a2a8c2f0c82f292d03a3f707232b0bae27bDale Johannesen return DAG.getNode(ISD::CTPOP, dl, VT, Tmp3); 225722cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 225822cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner } 225922cde6a518782cafc2115ad8d8233f79c9e9d52eChris Lattner} 2260e34b396ab7d28469bf3d9679a748b643d8e30458Chris Lattner 22618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::ExpandNode(SDNode *Node, 22628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 22638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 2264bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue Tmp1, Tmp2, Tmp3, Tmp4; 22658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 22668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 22678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 22688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 22698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandBitCount(Node->getOpcode(), Node->getOperand(0), dl); 22708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 22718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: 22738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(ExpandBSWAP(Node->getOperand(0), dl)); 22748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAMEADDR: 22768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::RETURNADDR: 22778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FRAME_TO_ARGS_OFFSET: 22788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, Node->getValueType(0))); 22798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FLT_ROUNDS_: 22818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(1, Node->getValueType(0))); 22828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_RETURN: 22848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::DECLARE: 22858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::DBG_LABEL: 22868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EH_LABEL: 22878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::PREFETCH: 22888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MEMBARRIER: 22898c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VAEND: 22908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(0)); 22918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 22924bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::DBG_STOPPOINT: 22934bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(ExpandDBG_STOPPOINT(Node)); 22944bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 22954bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::DYNAMIC_STACKALLOC: 22964bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ExpandDYNAMIC_STACKALLOC(Node, Results); 22974bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 22988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::MERGE_VALUES: 22998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman for (unsigned i = 0; i < Node->getNumValues(); i++) 23008c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Node->getOperand(i)); 23018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UNDEF: { 23038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT VT = Node->getValueType(0); 23048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (VT.isInteger()) 23058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstant(0, VT)); 23068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else if (VT.isFloatingPoint()) 23078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(DAG.getConstantFP(0, VT)); 23088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 2309c25e7581b9b8088910da31702d4ca21c4734c6d7Torok Edwin LLVM_UNREACHABLE("Unknown value type!"); 23108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::TRAP: { 23138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // If this operation is not supported, lower it to 'abort()' call 23148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TargetLowering::ArgListTy Args; 23158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman std::pair<SDValue, SDValue> CallResult = 23168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TLI.LowerCallTo(Node->getOperand(0), Type::VoidTy, 23176b61cd185eeb90bec93f042535594132ae1f0f41Tilmann Scheller false, false, false, false, 0, CallingConv::C, false, 23188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getExternalSymbol("abort", TLI.getPointerTy()), 23198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Args, DAG, dl); 23208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(CallResult.second); 23218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND: 23248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BIT_CONVERT: 23258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), Node->getValueType(0), 23268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 23278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_EXTEND: 23308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), 23318c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0).getValueType(), 23328c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 23338c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23348c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SIGN_EXTEND_INREG: { 23368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: we could fall back on load/store here too for targets without 23378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // SAR. However, it is doubtful that any exist. 23388c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 23398c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman unsigned BitsDiff = Node->getValueType(0).getSizeInBits() - 23408c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ExtraVT.getSizeInBits(); 23418c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SDValue ShiftCst = DAG.getConstant(BitsDiff, TLI.getShiftAmountTy()); 23428c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SHL, dl, Node->getValueType(0), 23438c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), ShiftCst); 23448c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRA, dl, Node->getValueType(0), Tmp1, ShiftCst); 23458c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23468c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23478c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23488c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_ROUND_INREG: { 23498c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // The only way we can lower this is to turn it into a TRUNCSTORE, 23508c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // EXTLOAD pair, targetting a temporary location (a stack slot). 23518c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 23528c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // NOTE: there is a choice here between constantly creating new stack 23538c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // slots and always reusing the same one. We currently always create 23548c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // new ones, as reuse may inhibit scheduling. 23558c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT ExtraVT = cast<VTSDNode>(Node->getOperand(1))->getVT(); 23568c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = EmitStackConvert(Node->getOperand(0), ExtraVT, 23578c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getValueType(0), dl); 23588c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23598c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23608c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 23618c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 23628c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 23638c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandLegalINT_TO_FP(Node->getOpcode() == ISD::SINT_TO_FP, 23648c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), Node->getValueType(0), dl); 23658c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23668c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: { 23688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SDValue True, False; 23698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT VT = Node->getOperand(0).getValueType(); 23708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT NVT = Node->getValueType(0); 23718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const uint64_t zero[] = {0, 0}; 23728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APFloat apf = APFloat(APInt(VT.getSizeInBits(), 2, zero)); 23738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman APInt x = APInt::getSignBit(NVT.getSizeInBits()); 23748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman (void)apf.convertFromAPInt(x, false, APFloat::rmNearestTiesToEven); 23758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getConstantFP(apf, VT); 23768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), 23778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), 23788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, ISD::SETLT); 23798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman True = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, Node->getOperand(0)); 23808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman False = DAG.getNode(ISD::FP_TO_SINT, dl, NVT, 23818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getNode(ISD::FSUB, dl, VT, 23828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0), Tmp1)); 23838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman False = DAG.getNode(ISD::XOR, dl, NVT, False, 23848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(x, NVT)); 23858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, True, False); 23868c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 23878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 23888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 2389509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VAARG: { 2390509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman const Value *V = cast<SrcValueSDNode>(Node->getOperand(2))->getValue(); 2391509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman MVT VT = Node->getValueType(0); 2392509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2393509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 2394509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SDValue VAList = DAG.getLoad(TLI.getPointerTy(), dl, Tmp1, Tmp2, V, 0); 2395509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Increment the pointer, VAList, to the next vaarg 2396509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ISD::ADD, dl, TLI.getPointerTy(), VAList, 2397509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(TLI.getTargetData()-> 2398d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson getTypeAllocSize(VT.getTypeForMVT( 2399d1474d09cbe5fdeec8ba0d6c6b52f316f3422532Owen Anderson *DAG.getContext())), 2400509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TLI.getPointerTy())); 2401509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Store the incremented VAList to the legalized pointer 2402509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getStore(VAList.getValue(1), dl, Tmp3, Tmp2, V, 0); 2403509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Load the actual argument out of the pointer VAList 2404509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(DAG.getLoad(VT, dl, Tmp3, VAList, NULL, 0)); 2405509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Results[0].getValue(1)); 2406509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2407509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 24088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::VACOPY: { 24098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This defaults to loading a pointer from the input and storing it to the 24108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // output, returning the chain. 24118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VD = cast<SrcValueSDNode>(Node->getOperand(3))->getValue(); 24128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman const Value *VS = cast<SrcValueSDNode>(Node->getOperand(4))->getValue(); 24138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getLoad(TLI.getPointerTy(), dl, Node->getOperand(0), 24148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(2), VS, 0); 24158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getStore(Tmp1.getValue(1), dl, Tmp1, Node->getOperand(1), VD, 0); 24168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 24178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_VECTOR_ELT: 24208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOperand(0).getValueType().getVectorNumElements() == 1) 24218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // This must be an access of the only element. Return it. 24228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, Node->getValueType(0), 24238c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 24248c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman else 24258c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = ExpandExtractFromVectorThroughStack(SDValue(Node, 0)); 24268c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 24278c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24288c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_SUBVECTOR: 24298c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(ExpandExtractFromVectorThroughStack(SDValue(Node, 0))); 24308c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 2431509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::CONCAT_VECTORS: { 24325257106c4d396b5d932f7b282c3ba255c4605195Eli Friedman Results.push_back(ExpandVectorBuildThroughStack(Node)); 2433509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2434509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 24358c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SCALAR_TO_VECTOR: 24368c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(ExpandSCALAR_TO_VECTOR(Node)); 24378c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24383f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INSERT_VECTOR_ELT: 24393f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(ExpandINSERT_VECTOR_ELT(Node->getOperand(0), 24403f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getOperand(1), 24413f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getOperand(2), dl)); 24423f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 2443509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 2444509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 2445509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 2446509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 2447509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman MVT VT = Node->getValueType(0); 2448509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman MVT EltVT = VT.getVectorElementType(); 2449509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned NumElems = VT.getVectorNumElements(); 2450509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<SDValue, 8> Ops; 2451509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman for (unsigned i = 0; i != NumElems; ++i) { 2452509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Mask[i] < 0) { 2453509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getUNDEF(EltVT)); 2454509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman continue; 2455509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2456509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned Idx = Mask[i]; 2457509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Idx < NumElems) 2458509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2459509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Node->getOperand(0), 2460509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(Idx))); 2461509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 2462509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Ops.push_back(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, dl, EltVT, 2463509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Node->getOperand(1), 2464509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(Idx - NumElems))); 2465509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2466509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BUILD_VECTOR, dl, VT, &Ops[0], Ops.size()); 2467509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 2468509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 2469509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 24708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::EXTRACT_ELEMENT: { 24718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT OpTy = Node->getOperand(0).getValueType(); 24728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (cast<ConstantSDNode>(Node->getOperand(1))->getZExtValue()) { 24738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 1 -> Hi 24748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRL, dl, OpTy, Node->getOperand(0), 24758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OpTy.getSizeInBits()/2, 24768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman TLI.getShiftAmountTy())); 24778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), Tmp1); 24788c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else { 24798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // 0 -> Lo 24808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::TRUNCATE, dl, Node->getValueType(0), 24818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOperand(0)); 24828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 24848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 24858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 24863f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKSAVE: 24873f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // Expand to CopyFromReg if the target set 24883f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // StackPointerRegisterToSaveRestore. 24893f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 24903f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, SP, 24913f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getValueType(0))); 24923f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Results[0].getValue(1)); 24933f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } else { 24943f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(DAG.getUNDEF(Node->getValueType(0))); 24953f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Node->getOperand(0)); 24963f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 24973f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 24983f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::STACKRESTORE: 24993f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // Expand to CopyToReg if the target set 25003f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // StackPointerRegisterToSaveRestore. 25013f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman if (unsigned SP = TLI.getStackPointerRegisterToSaveRestore()) { 25023f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(DAG.getCopyToReg(Node->getOperand(0), dl, SP, 25033f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Node->getOperand(1))); 25043f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } else { 25053f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(Node->getOperand(0)); 25063f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman } 25073f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 25084bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::FCOPYSIGN: 25094bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(ExpandFCOPYSIGN(Node)); 25104bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 2511f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEG: 2512f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FNEG(X) -> Y = SUB -0.0, X 2513f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getConstantFP(-0.0, Node->getValueType(0)); 2514f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(ISD::FSUB, dl, Node->getValueType(0), Tmp1, 2515f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Node->getOperand(0)); 2516f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2517f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2518f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FABS: { 2519f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Expand Y = FABS(X) -> Y = (X >u 0.0) ? X : fneg(X). 2520f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman MVT VT = Node->getValueType(0); 2521f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = Node->getOperand(0); 2522f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp2 = DAG.getConstantFP(0.0, VT); 2523f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(Tmp1.getValueType()), 2524f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1, Tmp2, ISD::SETUGT); 2525f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp3 = DAG.getNode(ISD::FNEG, dl, VT, Tmp1); 2526f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, VT, Tmp2, Tmp1, Tmp3); 2527f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(Tmp1); 2528f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2529f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman } 2530f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSQRT: 2531f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::SQRT_F32, RTLIB::SQRT_F64, 2532f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::SQRT_F80, RTLIB::SQRT_PPCF128)); 2533f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2534f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FSIN: 2535f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::SIN_F32, RTLIB::SIN_F64, 2536f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::SIN_F80, RTLIB::SIN_PPCF128)); 2537f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2538f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCOS: 2539f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::COS_F32, RTLIB::COS_F64, 2540f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::COS_F80, RTLIB::COS_PPCF128)); 2541f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2542f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG: 2543f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG_F32, RTLIB::LOG_F64, 2544f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::LOG_F80, RTLIB::LOG_PPCF128)); 2545f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2546f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG2: 2547f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG2_F32, RTLIB::LOG2_F64, 2548f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::LOG2_F80, RTLIB::LOG2_PPCF128)); 2549f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2550f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FLOG10: 2551f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::LOG10_F32, RTLIB::LOG10_F64, 2552f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::LOG10_F80, RTLIB::LOG10_PPCF128)); 2553f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2554f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP: 2555f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP_F32, RTLIB::EXP_F64, 2556f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::EXP_F80, RTLIB::EXP_PPCF128)); 2557f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2558f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FEXP2: 2559f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::EXP2_F32, RTLIB::EXP2_F64, 2560f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::EXP2_F80, RTLIB::EXP2_PPCF128)); 2561f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2562f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FTRUNC: 2563f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::TRUNC_F32, RTLIB::TRUNC_F64, 2564f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::TRUNC_F80, RTLIB::TRUNC_PPCF128)); 2565f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2566f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FFLOOR: 2567f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::FLOOR_F32, RTLIB::FLOOR_F64, 2568f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::FLOOR_F80, RTLIB::FLOOR_PPCF128)); 2569f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2570f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FCEIL: 2571f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::CEIL_F32, RTLIB::CEIL_F64, 2572f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::CEIL_F80, RTLIB::CEIL_PPCF128)); 2573f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2574f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FRINT: 2575f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::RINT_F32, RTLIB::RINT_F64, 2576f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::RINT_F80, RTLIB::RINT_PPCF128)); 2577f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2578f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FNEARBYINT: 2579f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::NEARBYINT_F32, 2580f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::NEARBYINT_F64, 2581f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::NEARBYINT_F80, 2582f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::NEARBYINT_PPCF128)); 2583f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2584f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOWI: 2585f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::POWI_F32, RTLIB::POWI_F64, 2586f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::POWI_F80, RTLIB::POWI_PPCF128)); 2587f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2588f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FPOW: 2589f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::POW_F32, RTLIB::POW_F64, 2590f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::POW_F80, RTLIB::POW_PPCF128)); 2591f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2592f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FDIV: 2593f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::DIV_F32, RTLIB::DIV_F64, 2594f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::DIV_F80, RTLIB::DIV_PPCF128)); 2595f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2596f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::FREM: 2597f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(ExpandFPLibCall(Node, RTLIB::REM_F32, RTLIB::REM_F64, 2598f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman RTLIB::REM_F80, RTLIB::REM_PPCF128)); 2599f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 2600f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::ConstantFP: { 2601f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman ConstantFPSDNode *CFP = cast<ConstantFPSDNode>(Node); 2602f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Check to see if this FP immediate is already legal. 2603f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isLegal = false; 2604f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman for (TargetLowering::legal_fpimm_iterator I = TLI.legal_fpimm_begin(), 2605f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman E = TLI.legal_fpimm_end(); I != E; ++I) { 2606f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (CFP->isExactlyValue(*I)) { 2607f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman isLegal = true; 2608f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2609f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2610f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2611f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // If this is a legal constant, turn it into a TargetConstantFP node. 2612f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (isLegal) 2613f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(SDValue(Node, 0)); 2614f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 2615f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(ExpandConstantFP(CFP, true, DAG, TLI)); 2616f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2617f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 261826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EHSELECTION: { 261926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionSelectorRegister(); 262026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 262126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(DAG.getCopyFromReg(Node->getOperand(1), dl, Reg, 262226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getValueType(0))); 262326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 262426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 262526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 262626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::EXCEPTIONADDR: { 262726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned Reg = TLI.getExceptionAddressRegister(); 262826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(Reg && "Can't expand to unknown register!"); 262926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(DAG.getCopyFromReg(Node->getOperand(0), dl, Reg, 263026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getValueType(0))); 263126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Results[0].getValue(1)); 263226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 263326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 263426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::SUB: { 263526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman MVT VT = Node->getValueType(0); 263626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ISD::ADD, VT) && 263726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman TLI.isOperationLegalOrCustom(ISD::XOR, VT) && 263826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "Don't know how to expand this subtraction!"); 263926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ISD::XOR, dl, VT, Node->getOperand(1), 264026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman DAG.getConstant(APInt::getAllOnesValue(VT.getSizeInBits()), VT)); 264126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ISD::ADD, dl, VT, Tmp2, DAG.getConstant(1, VT)); 264226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(DAG.getNode(ISD::ADD, dl, VT, Node->getOperand(0), Tmp1)); 264326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 264426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 2645f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UREM: 2646f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SREM: { 264726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman MVT VT = Node->getValueType(0); 264826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 2649f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SREM; 2650f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivOpc = isSigned ? ISD::SDIV : ISD::UDIV; 2651f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 2652f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(0); 2653f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp3 = Node->getOperand(1); 26543be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) { 26553be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Tmp2, Tmp3).getValue(1); 26563be2e514c9e7b20135be5b9df3e9aa1cb08cb374Eli Friedman } else if (TLI.isOperationLegalOrCustom(DivOpc, VT)) { 2657f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // X % Y -> X-X/Y*Y 2658f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivOpc, dl, VT, Tmp2, Tmp3); 2659f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, VT, Tmp1, Tmp3); 2660f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, VT, Tmp2, Tmp1); 2661f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else if (isSigned) { 2662f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = ExpandIntLibCall(Node, true, RTLIB::SREM_I16, RTLIB::SREM_I32, 2663f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::SREM_I64, RTLIB::SREM_I128); 2664f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else { 266526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = ExpandIntLibCall(Node, false, RTLIB::UREM_I16, RTLIB::UREM_I32, 266626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::UREM_I64, RTLIB::UREM_I128); 2667f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 266826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 266926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 267026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 2671f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::UDIV: 2672f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::SDIV: { 2673f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman bool isSigned = Node->getOpcode() == ISD::SDIV; 2674f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman unsigned DivRemOpc = isSigned ? ISD::SDIVREM : ISD::UDIVREM; 267526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman MVT VT = Node->getValueType(0); 267626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 2677f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (TLI.isOperationLegalOrCustom(DivRemOpc, VT)) 2678f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(DivRemOpc, dl, VTs, Node->getOperand(0), 2679f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(1)); 2680f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else if (isSigned) 268126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = ExpandIntLibCall(Node, true, RTLIB::SDIV_I16, RTLIB::SDIV_I32, 268226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::SDIV_I64, RTLIB::SDIV_I128); 2683f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman else 2684f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = ExpandIntLibCall(Node, false, RTLIB::UDIV_I16, RTLIB::UDIV_I32, 2685f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman RTLIB::UDIV_I64, RTLIB::UDIV_I128); 268626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 268726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 268826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 268926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHU: 269026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MULHS: { 269126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned ExpandOpcode = Node->getOpcode() == ISD::MULHU ? ISD::UMUL_LOHI : 269226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman ISD::SMUL_LOHI; 269326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman MVT VT = Node->getValueType(0); 269426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 269526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman assert(TLI.isOperationLegalOrCustom(ExpandOpcode, VT) && 269626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman "If this wasn't legal, it shouldn't have been created!"); 269726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = DAG.getNode(ExpandOpcode, dl, VTs, Node->getOperand(0), 269826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Node->getOperand(1)); 269926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1.getValue(1)); 270026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 270126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 270226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman case ISD::MUL: { 270326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman MVT VT = Node->getValueType(0); 270426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman SDVTList VTs = DAG.getVTList(VT, VT); 270526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // See if multiply or divide can be lowered using two-result operations. 270626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // We just need the low half of the multiply; try both the signed 270726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // and unsigned forms. If the target supports both SMUL_LOHI and 270826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // UMUL_LOHI, form a preference by checking which forms of plain 270926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman // MULH it supports. 271026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasSMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::SMUL_LOHI, VT); 271126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasUMUL_LOHI = TLI.isOperationLegalOrCustom(ISD::UMUL_LOHI, VT); 271226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHS = TLI.isOperationLegalOrCustom(ISD::MULHS, VT); 271326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman bool HasMULHU = TLI.isOperationLegalOrCustom(ISD::MULHU, VT); 271426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman unsigned OpToUse = 0; 271526ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (HasSMUL_LOHI && !HasMULHS) { 271626ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 271726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI && !HasMULHU) { 271826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 271926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasSMUL_LOHI) { 272026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::SMUL_LOHI; 272126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } else if (HasUMUL_LOHI) { 272226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman OpToUse = ISD::UMUL_LOHI; 272326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 272426ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman if (OpToUse) { 2725f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(DAG.getNode(OpToUse, dl, VTs, Node->getOperand(0), 2726f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(1))); 272726ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 272826ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 272926ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Tmp1 = ExpandIntLibCall(Node, false, RTLIB::MUL_I16, RTLIB::MUL_I32, 273026ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman RTLIB::MUL_I64, RTLIB::MUL_I128); 273126ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman Results.push_back(Tmp1); 273226ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman break; 273326ea8f982fb58245d3735b80ce04bc8050348a19Eli Friedman } 27344bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SADDO: 27354bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::SSUBO: { 27364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 27374bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 27384bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::SADDO ? 27394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 27404bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 27414bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 27424bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman MVT OType = Node->getValueType(1); 27434bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27444bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Zero = DAG.getConstant(0, LHS.getValueType()); 27454bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27464bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // LHSSign -> LHS >= 0 27474bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RHSSign -> RHS >= 0 27484bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // SumSign -> Sum >= 0 27494bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 27504bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Add: 27514bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign == RHSSign) && (LHSSign != SumSign) 27524bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Sub: 27534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // Overflow -> (LHSSign != RHSSign) && (LHSSign != SumSign) 27544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // 27554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHSSign = DAG.getSetCC(dl, OType, LHS, Zero, ISD::SETGE); 27564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHSSign = DAG.getSetCC(dl, OType, RHS, Zero, ISD::SETGE); 27574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SignsMatch = DAG.getSetCC(dl, OType, LHSSign, RHSSign, 27584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Node->getOpcode() == ISD::SADDO ? 27594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETEQ : ISD::SETNE); 27604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSign = DAG.getSetCC(dl, OType, Sum, Zero, ISD::SETGE); 27624bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue SumSignNE = DAG.getSetCC(dl, OType, LHSSign, SumSign, ISD::SETNE); 27634bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 27644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Cmp = DAG.getNode(ISD::AND, dl, OType, SignsMatch, SumSignNE); 27654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Cmp); 27664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 27674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 27684bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::UADDO: 27694bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::USUBO: { 27704bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LHS = Node->getOperand(0); 27714bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue RHS = Node->getOperand(1); 27724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Sum = DAG.getNode(Node->getOpcode() == ISD::UADDO ? 27734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::ADD : ISD::SUB, dl, LHS.getValueType(), 27744bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman LHS, RHS); 27754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Sum); 27764bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(DAG.getSetCC(dl, Node->getValueType(1), Sum, LHS, 27774bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Node->getOpcode () == ISD::UADDO ? 27784bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman ISD::SETULT : ISD::SETUGT)); 27794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 27804bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2781db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::UMULO: 2782db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman case ISD::SMULO: { 2783db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman MVT VT = Node->getValueType(0); 2784db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue LHS = Node->getOperand(0); 2785db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue RHS = Node->getOperand(1); 2786db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue BottomHalf; 2787db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman SDValue TopHalf; 2788db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman static unsigned Ops[2][3] = 2789db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { { ISD::MULHU, ISD::UMUL_LOHI, ISD::ZERO_EXTEND }, 2790db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman { ISD::MULHS, ISD::SMUL_LOHI, ISD::SIGN_EXTEND }}; 2791db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman bool isSigned = Node->getOpcode() == ISD::SMULO; 2792db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (TLI.isOperationLegalOrCustom(Ops[isSigned][0], VT)) { 2793db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::MUL, dl, VT, LHS, RHS); 2794db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(Ops[isSigned][0], dl, VT, LHS, RHS); 2795db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else if (TLI.isOperationLegalOrCustom(Ops[isSigned][1], VT)) { 2796db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(Ops[isSigned][1], dl, DAG.getVTList(VT, VT), LHS, 2797db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS); 2798db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = BottomHalf.getValue(1); 2799db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else if (TLI.isTypeLegal(MVT::getIntegerVT(VT.getSizeInBits() * 2))) { 2800db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman MVT WideVT = MVT::getIntegerVT(VT.getSizeInBits() * 2); 2801db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman LHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, LHS); 2802db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman RHS = DAG.getNode(Ops[isSigned][2], dl, WideVT, RHS); 2803db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::MUL, dl, WideVT, LHS, RHS); 2804db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman BottomHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 2805db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(0)); 2806db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getNode(ISD::EXTRACT_ELEMENT, dl, VT, Tmp1, 2807db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getIntPtrConstant(1)); 2808db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else { 2809db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // FIXME: We should be able to fall back to a libcall with an illegal 2810db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // type in some cases cases. 2811db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // Also, we can fall back to a division in some cases, but that's a big 2812db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman // performance hit in the general case. 2813c25e7581b9b8088910da31702d4ca21c4734c6d7Torok Edwin LLVM_UNREACHABLE("Don't know how to expand this operation yet!"); 2814db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2815db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman if (isSigned) { 2816db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getConstant(VT.getSizeInBits() - 1, TLI.getShiftAmountTy()); 2817db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Tmp1 = DAG.getNode(ISD::SRA, dl, VT, BottomHalf, Tmp1); 2818db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, Tmp1, 2819db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman ISD::SETNE); 2820db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } else { 2821db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman TopHalf = DAG.getSetCC(dl, TLI.getSetCCResultType(VT), TopHalf, 2822db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman DAG.getConstant(0, VT), ISD::SETNE); 2823db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2824db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(BottomHalf); 2825db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman Results.push_back(TopHalf); 2826db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman break; 2827db3c169f3a3102d40352ba63fd14a75c819c7adcEli Friedman } 2828f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BUILD_PAIR: { 2829f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman MVT PairTy = Node->getValueType(0); 2830f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, PairTy, Node->getOperand(0)); 2831f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = DAG.getNode(ISD::ANY_EXTEND, dl, PairTy, Node->getOperand(1)); 2832f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = DAG.getNode(ISD::SHL, dl, PairTy, Tmp2, 2833f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(PairTy.getSizeInBits()/2, 2834f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman TLI.getShiftAmountTy())); 2835f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(DAG.getNode(ISD::OR, dl, PairTy, Tmp1, Tmp2)); 2836f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2837f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2838509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::SELECT: 2839509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 2840509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = Node->getOperand(1); 2841509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = Node->getOperand(2); 2842509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (Tmp1.getOpcode() == ISD::SETCC) { 2843509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1.getOperand(0), Tmp1.getOperand(1), 2844509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, 2845509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<CondCodeSDNode>(Tmp1.getOperand(2))->get()); 2846509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } else { 2847509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getSelectCC(dl, Tmp1, 2848509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getConstant(0, Tmp1.getValueType()), 2849509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2, Tmp3, ISD::SETNE); 2850509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 2851509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 2852509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 28534bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman case ISD::BR_JT: { 28544bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Chain = Node->getOperand(0); 28554bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Table = Node->getOperand(1); 28564bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Index = Node->getOperand(2); 28574bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 28584bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman MVT PTy = TLI.getPointerTy(); 28594bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman MachineFunction &MF = DAG.getMachineFunction(); 28604bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman unsigned EntrySize = MF.getJumpTableInfo()->getEntrySize(); 28614bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Index= DAG.getNode(ISD::MUL, dl, PTy, 28624bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Index, DAG.getConstant(EntrySize, PTy)); 28634bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue Addr = DAG.getNode(ISD::ADD, dl, PTy, Index, Table); 28644bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman 28654bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman MVT MemVT = MVT::getIntegerVT(EntrySize * 8); 28664bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman SDValue LD = DAG.getExtLoad(ISD::SEXTLOAD, dl, PTy, Chain, Addr, 28674bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman PseudoSourceValue::getJumpTable(), 0, MemVT); 28684bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = LD; 28694bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (TLI.getTargetMachine().getRelocationModel() == Reloc::PIC_) { 28704bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // For PIC, the sequence is: 28714bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // BRIND(load(Jumptable + index) + RelocBase) 28724bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman // RelocBase can be JumpTable, GOT or some sort of global base. 28734bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Addr = DAG.getNode(ISD::ADD, dl, PTy, Addr, 28744bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman TLI.getPICJumpTableRelocBase(Table, DAG)); 28754bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 28764bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Tmp1 = DAG.getNode(ISD::BRIND, dl, MVT::Other, LD.getValue(1), Addr); 28774bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman Results.push_back(Tmp1); 28784bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman break; 28794bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } 2880f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman case ISD::BRCOND: 2881f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Expand brcond's setcc into its constituent parts and create a BR_CC 2882f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman // Node. 2883f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = Node->getOperand(0); 2884f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2 = Node->getOperand(1); 2885f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman if (Tmp2.getOpcode() == ISD::SETCC) { 2886f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, 2887f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1, Tmp2.getOperand(2), 2888f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp2.getOperand(0), Tmp2.getOperand(1), 2889f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 2890f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } else { 2891f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Tmp1 = DAG.getNode(ISD::BR_CC, dl, MVT::Other, Tmp1, 2892f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getCondCode(ISD::SETNE), Tmp2, 2893f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman DAG.getConstant(0, Tmp2.getValueType()), 2894f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Node->getOperand(2)); 2895f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman } 2896f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman Results.push_back(Tmp1); 2897f6f20a7779c5308ccb3e4306552d749091a77a60Eli Friedman break; 2898ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 2899ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = Node->getOperand(0); 2900ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp2 = Node->getOperand(1); 2901ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp3 = Node->getOperand(2); 2902bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(Node->getValueType(0), Tmp1, Tmp2, Tmp3, dl); 2903ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 2904ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // If we expanded the SETCC into an AND/OR, return the new node 2905ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman if (Tmp2.getNode() == 0) { 2906ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 2907ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 2908ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 2909ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 2910ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // Otherwise, SETCC for the given comparison type must be completely 2911ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // illegal; expand it into a SELECT_CC. 2912ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman MVT VT = Node->getValueType(0); 2913ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, VT, Tmp1, Tmp2, 2914ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman DAG.getConstant(1, VT), DAG.getConstant(0, VT), Tmp3); 2915ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(Tmp1); 2916ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 2917ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 2918bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::SELECT_CC: { 2919bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // LHS 2920bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(1); // RHS 2921bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(2); // True 2922bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(3); // False 2923bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman SDValue CC = Node->getOperand(4); 2924bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2925bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp1.getValueType()), 2926bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1, Tmp2, CC, dl); 2927bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2928bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp2.getNode() && "Can't legalize SELECT_CC with legal condition!"); 2929bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = DAG.getConstant(0, Tmp1.getValueType()); 2930bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman CC = DAG.getCondCode(ISD::SETNE); 2931bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::SELECT_CC, dl, Node->getValueType(0), Tmp1, Tmp2, 2932bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Tmp4, CC); 2933bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 2934bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 2935bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 2936bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman case ISD::BR_CC: { 2937bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = Node->getOperand(0); // Chain 2938bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2 = Node->getOperand(2); // LHS 2939bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = Node->getOperand(3); // RHS 2940bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = Node->getOperand(1); // CC 2941bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2942bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LegalizeSetCCCondCode(TLI.getSetCCResultType(Tmp2.getValueType()), 2943bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp2, Tmp3, Tmp4, dl); 2944bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman LastCALLSEQ_END = DAG.getEntryNode(); 2945bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman 2946bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman assert(!Tmp3.getNode() && "Can't legalize BR_CC with legal condition!"); 2947bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3 = DAG.getConstant(0, Tmp2.getValueType()); 2948bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp4 = DAG.getCondCode(ISD::SETNE); 2949bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp1 = DAG.getNode(ISD::BR_CC, dl, Node->getValueType(0), Tmp1, Tmp4, Tmp2, 2950bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Tmp3, Node->getOperand(4)); 2951bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman Results.push_back(Tmp1); 2952bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman break; 2953bbdd903c52897df78750aa0caf2fc34d55b5ead0Eli Friedman } 29543f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GLOBAL_OFFSET_TABLE: 29553f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalAddress: 29563f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::GlobalTLSAddress: 29573f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ExternalSymbol: 29583f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::ConstantPool: 29593f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::JumpTable: 29603f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_W_CHAIN: 29613f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_WO_CHAIN: 29623f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman case ISD::INTRINSIC_VOID: 29633f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman // FIXME: Custom lowering for these operations shouldn't return null! 29643f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman for (unsigned i = 0, e = Node->getNumValues(); i != e; ++i) 29653f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman Results.push_back(SDValue(Node, i)); 29663f727d6c1b68e90a3ab2d95ec2229f8b2c40b84bEli Friedman break; 29678c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29688c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 29698c377c7296d8a8104231442c3f6c27296249ec5fEli Friedmanvoid SelectionDAGLegalize::PromoteNode(SDNode *Node, 29708c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman SmallVectorImpl<SDValue> &Results) { 29718c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT OVT = Node->getValueType(0); 29728c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::UINT_TO_FP || 29738c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::SINT_TO_FP) { 29748c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT = Node->getOperand(0).getValueType(); 29758c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 29768c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman MVT NVT = TLI.getTypeToPromoteTo(Node->getOpcode(), OVT); 29778c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DebugLoc dl = Node->getDebugLoc(); 2978509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SDValue Tmp1, Tmp2, Tmp3; 29798c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman switch (Node->getOpcode()) { 29808c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTTZ: 29818c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTLZ: 29828c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::CTPOP: 29838c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Zero extend the argument. 29848c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Node->getOperand(0)); 29858c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Perform the larger operation. 29869a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1); 29878c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman if (Node->getOpcode() == ISD::CTTZ) { 29888c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman //if Tmp1 == sizeinbits(NVT) then Tmp1 = sizeinbits(Old VT) 29899a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Tmp2 = DAG.getSetCC(dl, TLI.getSetCCResultType(NVT), 29908c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1, DAG.getConstant(NVT.getSizeInBits(), NVT), 29918c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman ISD::SETEQ); 29928c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp2, 29938c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(OVT.getSizeInBits(), NVT), Tmp1); 29948c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } else if (Node->getOpcode() == ISD::CTLZ) { 29958c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman // Tmp1 = Tmp1 - (sizeinbits(NVT) - sizeinbits(Old VT)) 29968c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SUB, dl, NVT, Tmp1, 29978c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(NVT.getSizeInBits() - 29988c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman OVT.getSizeInBits(), NVT)); 29998c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 30009a4ba45f4cd0496c422f81e104adf6c03ebdd3baJakob Stoklund Olesen Results.push_back(DAG.getNode(ISD::TRUNCATE, dl, OVT, Tmp1)); 30018c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 30028c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::BSWAP: { 30038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman unsigned DiffBits = NVT.getSizeInBits() - OVT.getSizeInBits(); 30048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::ZERO_EXTEND, dl, NVT, Tmp1); 30058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::BSWAP, dl, NVT, Tmp1); 30068c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = DAG.getNode(ISD::SRL, dl, NVT, Tmp1, 30078c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman DAG.getConstant(DiffBits, TLI.getShiftAmountTy())); 30088c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 30098c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 30108c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 30118c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_UINT: 30128c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::FP_TO_SINT: 30138c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalFP_TO_INT(Node->getOperand(0), Node->getValueType(0), 30148c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::FP_TO_SINT, dl); 30158c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 30168c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 30178c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::UINT_TO_FP: 30188c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman case ISD::SINT_TO_FP: 30198c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Tmp1 = PromoteLegalINT_TO_FP(Node->getOperand(0), Node->getValueType(0), 30208c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Node->getOpcode() == ISD::SINT_TO_FP, dl); 30218c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman Results.push_back(Tmp1); 30228c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman break; 3023f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::AND: 3024f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::OR: 3025f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman case ISD::XOR: 3026f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman assert(OVT.isVector() && "Don't know how to promote scalar logic ops"); 3027f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Bit convert each of the values to the new type. 3028f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(0)); 3029f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp2 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(1)); 3030f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Tmp1 = DAG.getNode(Node->getOpcode(), dl, NVT, Tmp1, Tmp2); 3031f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman // Bit convert the result back the original type. 3032f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman Results.push_back(DAG.getNode(ISD::BIT_CONVERT, dl, OVT, Tmp1)); 3033f6b23bfc79cf9f605a2e74942c90799ff4f1a17eEli Friedman break; 3034509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::SELECT: 3035509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman unsigned ExtOp, TruncOp; 30364bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman if (Node->getValueType(0).isVector()) { 3037509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::BIT_CONVERT; 3038509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::BIT_CONVERT; 30394bc8c718218159fe410462f6e3670e7cb76c0c04Eli Friedman } else if (Node->getValueType(0).isInteger()) { 3040509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::ANY_EXTEND; 3041509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::TRUNCATE; 3042509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } else { 3043509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman ExtOp = ISD::FP_EXTEND; 3044509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman TruncOp = ISD::FP_ROUND; 3045509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3046509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = Node->getOperand(0); 3047509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Promote each of the values to the new type. 3048509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(1)); 3049509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp3 = DAG.getNode(ExtOp, dl, NVT, Node->getOperand(2)); 3050509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Perform the larger operation, then round down. 3051509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::SELECT, dl, NVT, Tmp1, Tmp2, Tmp3); 3052509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman if (TruncOp != ISD::FP_ROUND) 3053509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1); 3054509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman else 3055509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(TruncOp, dl, Node->getValueType(0), Tmp1, 3056509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman DAG.getIntPtrConstant(0)); 3057509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3058509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3059509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman case ISD::VECTOR_SHUFFLE: { 3060509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman SmallVector<int, 8> Mask; 3061509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman cast<ShuffleVectorSDNode>(Node)->getMask(Mask); 3062509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3063509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Cast the two input vectors. 3064509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(0)); 3065509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp2 = DAG.getNode(ISD::BIT_CONVERT, dl, NVT, Node->getOperand(1)); 3066509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman 3067509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman // Convert the shuffle mask to the right # elements. 3068509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = ShuffleWithNarrowerEltType(NVT, OVT, dl, Tmp1, Tmp2, Mask); 3069509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Tmp1 = DAG.getNode(ISD::BIT_CONVERT, dl, OVT, Tmp1); 3070509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman Results.push_back(Tmp1); 3071509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman break; 3072509150f973ae650a57b79010a3ec36e60e40f41dEli Friedman } 3073ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman case ISD::SETCC: { 3074ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // First step, figure out the appropriate operation to use. 3075ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // Allow SETCC to not be supported for all legal data types 3076ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // Mostly this targets FP 3077ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman MVT NewInTy = Node->getOperand(0).getValueType(); 3078ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman MVT OldVT = NewInTy; OldVT = OldVT; 3079ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 3080ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // Scan for the appropriate larger type to use. 3081ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman while (1) { 3082ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman NewInTy = (MVT::SimpleValueType)(NewInTy.getSimpleVT()+1); 3083ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 3084ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman assert(NewInTy.isInteger() == OldVT.isInteger() && 3085ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman "Fell off of the edge of the integer world"); 3086ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman assert(NewInTy.isFloatingPoint() == OldVT.isFloatingPoint() && 3087ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman "Fell off of the edge of the floating point world"); 3088ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman 3089ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman // If the target supports SETCC of this type, use it. 3090ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman if (TLI.isOperationLegalOrCustom(ISD::SETCC, NewInTy)) 3091ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3092ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 3093ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman if (NewInTy.isInteger()) 3094c25e7581b9b8088910da31702d4ca21c4734c6d7Torok Edwin LLVM_UNREACHABLE("Cannot promote Legal Integer SETCC yet"); 3095ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman else { 3096ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1 = DAG.getNode(ISD::FP_EXTEND, dl, NewInTy, Tmp1); 3097ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp2 = DAG.getNode(ISD::FP_EXTEND, dl, NewInTy, Tmp2); 3098ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 3099ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Results.push_back(DAG.getNode(ISD::SETCC, dl, Node->getValueType(0), 3100ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman Tmp1, Tmp2, Node->getOperand(2))); 3101ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman break; 3102ad75460e30aab135057355fa0712141bf2cb08fcEli Friedman } 31038c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman } 31048c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman} 31058c377c7296d8a8104231442c3f6c27296249ec5fEli Friedman 31063e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// SelectionDAG::Legalize - This is the entry point for the file. 31073e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner// 310898a366d547772010e94609e4584489b3e5ce0043Bill Wendlingvoid SelectionDAG::Legalize(bool TypesNeedLegalizing, 310998a366d547772010e94609e4584489b3e5ce0043Bill Wendling CodeGenOpt::Level OptLevel) { 31103e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// run - This is the main entry point to this class. 31113e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner /// 31121fde9c5f771922f12fefc903850c4eca303297d9Eli Friedman SelectionDAGLegalize(*this, OptLevel).LegalizeDAG(); 31133e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner} 31143e928bbd6153eb08641cbd0ad7d8487378a8b12aChris Lattner 3115