1 //===- DirectXTargetMachine.cpp - DirectX Target Implementation -*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 /// 9 /// \file 10 /// This file contains DirectX target initializer. 11 /// 12 //===----------------------------------------------------------------------===// 13 14 #include "DirectXTargetMachine.h" 15 #include "DXILDataScalarization.h" 16 #include "DXILFlattenArrays.h" 17 #include "DXILIntrinsicExpansion.h" 18 #include "DXILOpLowering.h" 19 #include "DXILPrettyPrinter.h" 20 #include "DXILResourceAnalysis.h" 21 #include "DXILShaderFlags.h" 22 #include "DXILTranslateMetadata.h" 23 #include "DXILWriter/DXILWriterPass.h" 24 #include "DirectX.h" 25 #include "DirectXSubtarget.h" 26 #include "DirectXTargetTransformInfo.h" 27 #include "TargetInfo/DirectXTargetInfo.h" 28 #include "llvm/CodeGen/MachineModuleInfo.h" 29 #include "llvm/CodeGen/Passes.h" 30 #include "llvm/CodeGen/TargetPassConfig.h" 31 #include "llvm/IR/IRPrintingPasses.h" 32 #include "llvm/IR/LegacyPassManager.h" 33 #include "llvm/InitializePasses.h" 34 #include "llvm/MC/MCSectionDXContainer.h" 35 #include "llvm/MC/SectionKind.h" 36 #include "llvm/MC/TargetRegistry.h" 37 #include "llvm/Passes/PassBuilder.h" 38 #include "llvm/Support/CodeGen.h" 39 #include "llvm/Support/Compiler.h" 40 #include "llvm/Support/ErrorHandling.h" 41 #include "llvm/Target/TargetLoweringObjectFile.h" 42 #include "llvm/Transforms/Scalar/Scalarizer.h" 43 #include <optional> 44 45 using namespace llvm; 46 47 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeDirectXTarget() { 48 RegisterTargetMachine<DirectXTargetMachine> X(getTheDirectXTarget()); 49 auto *PR = PassRegistry::getPassRegistry(); 50 initializeDXILIntrinsicExpansionLegacyPass(*PR); 51 initializeDXILDataScalarizationLegacyPass(*PR); 52 initializeDXILFlattenArraysLegacyPass(*PR); 53 initializeScalarizerLegacyPassPass(*PR); 54 initializeDXILPrepareModulePass(*PR); 55 initializeEmbedDXILPassPass(*PR); 56 initializeWriteDXILPassPass(*PR); 57 initializeDXContainerGlobalsPass(*PR); 58 initializeDXILOpLoweringLegacyPass(*PR); 59 initializeDXILTranslateMetadataLegacyPass(*PR); 60 initializeDXILResourceMDWrapperPass(*PR); 61 initializeShaderFlagsAnalysisWrapperPass(*PR); 62 initializeDXILFinalizeLinkageLegacyPass(*PR); 63 } 64 65 class DXILTargetObjectFile : public TargetLoweringObjectFile { 66 public: 67 DXILTargetObjectFile() = default; 68 69 MCSection *getExplicitSectionGlobal(const GlobalObject *GO, SectionKind Kind, 70 const TargetMachine &TM) const override { 71 return getContext().getDXContainerSection(GO->getSection(), Kind); 72 } 73 74 protected: 75 MCSection *SelectSectionForGlobal(const GlobalObject *GO, SectionKind Kind, 76 const TargetMachine &TM) const override { 77 llvm_unreachable("Not supported!"); 78 } 79 }; 80 81 class DirectXPassConfig : public TargetPassConfig { 82 public: 83 DirectXPassConfig(DirectXTargetMachine &TM, PassManagerBase &PM) 84 : TargetPassConfig(TM, PM) {} 85 86 DirectXTargetMachine &getDirectXTargetMachine() const { 87 return getTM<DirectXTargetMachine>(); 88 } 89 90 FunctionPass *createTargetRegisterAllocator(bool) override { return nullptr; } 91 void addCodeGenPrepare() override { 92 addPass(createDXILFinalizeLinkageLegacyPass()); 93 addPass(createDXILIntrinsicExpansionLegacyPass()); 94 addPass(createDXILDataScalarizationLegacyPass()); 95 ScalarizerPassOptions DxilScalarOptions; 96 DxilScalarOptions.ScalarizeLoadStore = true; 97 addPass(createDXILFlattenArraysLegacyPass()); 98 addPass(createScalarizerPass(DxilScalarOptions)); 99 addPass(createDXILOpLoweringLegacyPass()); 100 addPass(createDXILTranslateMetadataLegacyPass()); 101 addPass(createDXILPrepareModulePass()); 102 } 103 }; 104 105 DirectXTargetMachine::DirectXTargetMachine(const Target &T, const Triple &TT, 106 StringRef CPU, StringRef FS, 107 const TargetOptions &Options, 108 std::optional<Reloc::Model> RM, 109 std::optional<CodeModel::Model> CM, 110 CodeGenOptLevel OL, bool JIT) 111 : CodeGenTargetMachineImpl( 112 T, 113 "e-m:e-p:32:32-i1:32-i8:8-i16:16-i32:32-i64:64-f16:16-" 114 "f32:32-f64:64-n8:16:32:64", 115 TT, CPU, FS, Options, Reloc::Static, CodeModel::Small, OL), 116 TLOF(std::make_unique<DXILTargetObjectFile>()), 117 Subtarget(std::make_unique<DirectXSubtarget>(TT, CPU, FS, *this)) { 118 initAsmInfo(); 119 } 120 121 DirectXTargetMachine::~DirectXTargetMachine() {} 122 123 void DirectXTargetMachine::registerPassBuilderCallbacks(PassBuilder &PB) { 124 #define GET_PASS_REGISTRY "DirectXPassRegistry.def" 125 #include "llvm/Passes/TargetPassRegistry.inc" 126 } 127 128 bool DirectXTargetMachine::addPassesToEmitFile( 129 PassManagerBase &PM, raw_pwrite_stream &Out, raw_pwrite_stream *DwoOut, 130 CodeGenFileType FileType, bool DisableVerify, 131 MachineModuleInfoWrapperPass *MMIWP) { 132 TargetPassConfig *PassConfig = createPassConfig(PM); 133 PassConfig->addCodeGenPrepare(); 134 135 switch (FileType) { 136 case CodeGenFileType::AssemblyFile: 137 PM.add(createDXILPrettyPrinterLegacyPass(Out)); 138 PM.add(createPrintModulePass(Out, "", true)); 139 break; 140 case CodeGenFileType::ObjectFile: 141 if (TargetPassConfig::willCompleteCodeGenPipeline()) { 142 PM.add(createDXILEmbedderPass()); 143 // We embed the other DXContainer globals after embedding DXIL so that the 144 // globals don't pollute the DXIL. 145 PM.add(createDXContainerGlobalsPass()); 146 147 if (!MMIWP) 148 MMIWP = new MachineModuleInfoWrapperPass(this); 149 PM.add(MMIWP); 150 if (addAsmPrinter(PM, Out, DwoOut, FileType, 151 MMIWP->getMMI().getContext())) 152 return true; 153 } else 154 PM.add(createDXILWriterPass(Out)); 155 break; 156 case CodeGenFileType::Null: 157 break; 158 } 159 return false; 160 } 161 162 bool DirectXTargetMachine::addPassesToEmitMC(PassManagerBase &PM, 163 MCContext *&Ctx, 164 raw_pwrite_stream &Out, 165 bool DisableVerify) { 166 return true; 167 } 168 169 TargetPassConfig *DirectXTargetMachine::createPassConfig(PassManagerBase &PM) { 170 return new DirectXPassConfig(*this, PM); 171 } 172 173 const DirectXSubtarget * 174 DirectXTargetMachine::getSubtargetImpl(const Function &) const { 175 return Subtarget.get(); 176 } 177 178 TargetTransformInfo 179 DirectXTargetMachine::getTargetTransformInfo(const Function &F) const { 180 return TargetTransformInfo(DirectXTTIImpl(this, F)); 181 } 182 183 DirectXTargetLowering::DirectXTargetLowering(const DirectXTargetMachine &TM, 184 const DirectXSubtarget &STI) 185 : TargetLowering(TM) {} 186