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 "DXILWriter/DXILWriterPass.h" 16 #include "DirectX.h" 17 #include "DirectXSubtarget.h" 18 #include "DirectXTargetTransformInfo.h" 19 #include "TargetInfo/DirectXTargetInfo.h" 20 #include "llvm/CodeGen/Passes.h" 21 #include "llvm/CodeGen/TargetPassConfig.h" 22 #include "llvm/IR/IRPrintingPasses.h" 23 #include "llvm/IR/LegacyPassManager.h" 24 #include "llvm/MC/SectionKind.h" 25 #include "llvm/MC/TargetRegistry.h" 26 #include "llvm/Support/CodeGen.h" 27 #include "llvm/Support/Compiler.h" 28 #include "llvm/Support/ErrorHandling.h" 29 #include "llvm/Target/TargetLoweringObjectFile.h" 30 31 using namespace llvm; 32 33 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeDirectXTarget() { 34 RegisterTargetMachine<DirectXTargetMachine> X(getTheDirectXTarget()); 35 auto *PR = PassRegistry::getPassRegistry(); 36 initializeDXILPrepareModulePass(*PR); 37 initializeEmbedDXILPassPass(*PR); 38 initializeDXILOpLoweringLegacyPass(*PR); 39 initializeDXILTranslateMetadataPass(*PR); 40 } 41 42 class DXILTargetObjectFile : public TargetLoweringObjectFile { 43 public: 44 DXILTargetObjectFile() = default; 45 46 MCSection *getExplicitSectionGlobal(const GlobalObject *GO, SectionKind Kind, 47 const TargetMachine &TM) const override { 48 llvm_unreachable("Not supported!"); 49 } 50 51 protected: 52 MCSection *SelectSectionForGlobal(const GlobalObject *GO, SectionKind Kind, 53 const TargetMachine &TM) const override { 54 llvm_unreachable("Not supported!"); 55 } 56 }; 57 58 class DirectXPassConfig : public TargetPassConfig { 59 public: 60 DirectXPassConfig(DirectXTargetMachine &TM, PassManagerBase &PM) 61 : TargetPassConfig(TM, PM) {} 62 63 DirectXTargetMachine &getDirectXTargetMachine() const { 64 return getTM<DirectXTargetMachine>(); 65 } 66 67 FunctionPass *createTargetRegisterAllocator(bool) override { return nullptr; } 68 }; 69 70 DirectXTargetMachine::DirectXTargetMachine(const Target &T, const Triple &TT, 71 StringRef CPU, StringRef FS, 72 const TargetOptions &Options, 73 Optional<Reloc::Model> RM, 74 Optional<CodeModel::Model> CM, 75 CodeGenOpt::Level OL, bool JIT) 76 : LLVMTargetMachine(T, 77 "e-m:e-p:32:32-i1:32-i8:8-i16:16-i32:32-i64:64-f16:16-" 78 "f32:32-f64:64-n8:16:32:64", 79 TT, CPU, FS, Options, Reloc::Static, CodeModel::Small, 80 OL), 81 TLOF(std::make_unique<DXILTargetObjectFile>()), 82 Subtarget(std::make_unique<DirectXSubtarget>(TT, CPU, FS, *this)) {} 83 84 DirectXTargetMachine::~DirectXTargetMachine() {} 85 86 bool DirectXTargetMachine::addPassesToEmitFile( 87 PassManagerBase &PM, raw_pwrite_stream &Out, raw_pwrite_stream *DwoOut, 88 CodeGenFileType FileType, bool DisableVerify, 89 MachineModuleInfoWrapperPass *MMIWP) { 90 PM.add(createDXILOpLoweringLegacyPass()); 91 PM.add(createDXILPrepareModulePass()); 92 PM.add(createDXILTranslateMetadataPass()); 93 switch (FileType) { 94 case CGFT_AssemblyFile: 95 if (TargetPassConfig::willCompleteCodeGenPipeline()) { 96 PM.add(createDXILEmbedderPass()); 97 } 98 PM.add(createPrintModulePass(Out, "", true)); 99 break; 100 case CGFT_ObjectFile: 101 // TODO: Use MC Object streamer to write DXContainer 102 PM.add(createDXILWriterPass(Out)); 103 break; 104 case CGFT_Null: 105 break; 106 } 107 return false; 108 } 109 110 bool DirectXTargetMachine::addPassesToEmitMC(PassManagerBase &PM, 111 MCContext *&Ctx, 112 raw_pwrite_stream &Out, 113 bool DisableVerify) { 114 return true; 115 } 116 117 TargetPassConfig *DirectXTargetMachine::createPassConfig(PassManagerBase &PM) { 118 return new DirectXPassConfig(*this, PM); 119 } 120 121 const DirectXSubtarget * 122 DirectXTargetMachine::getSubtargetImpl(const Function &) const { 123 return Subtarget.get(); 124 } 125 126 TargetTransformInfo 127 DirectXTargetMachine::getTargetTransformInfo(const Function &F) const { 128 return TargetTransformInfo(DirectXTTIImpl(this, F)); 129 } 130 131 DirectXTargetLowering::DirectXTargetLowering(const DirectXTargetMachine &TM, 132 const DirectXSubtarget &STI) 133 : TargetLowering(TM) {} 134