1 //===-- AMDGPUMCTargetDesc.cpp - AMDGPU Target Descriptions ---------------===// 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 provides AMDGPU specific target descriptions. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "AMDGPUMCTargetDesc.h" 15 #include "AMDGPUELFStreamer.h" 16 #include "AMDGPUInstPrinter.h" 17 #include "AMDGPUMCAsmInfo.h" 18 #include "AMDGPUTargetStreamer.h" 19 #include "R600InstPrinter.h" 20 #include "R600MCTargetDesc.h" 21 #include "TargetInfo/AMDGPUTargetInfo.h" 22 #include "llvm/MC/LaneBitmask.h" 23 #include "llvm/MC/MCAsmBackend.h" 24 #include "llvm/MC/MCCodeEmitter.h" 25 #include "llvm/MC/MCELFStreamer.h" 26 #include "llvm/MC/MCInstPrinter.h" 27 #include "llvm/MC/MCInstrAnalysis.h" 28 #include "llvm/MC/MCInstrDesc.h" 29 #include "llvm/MC/MCInstrInfo.h" 30 #include "llvm/MC/MCObjectWriter.h" 31 #include "llvm/MC/MCRegisterInfo.h" 32 #include "llvm/MC/MCStreamer.h" 33 #include "llvm/MC/MCSubtargetInfo.h" 34 #include "llvm/MC/TargetRegistry.h" 35 36 using namespace llvm; 37 38 #define GET_INSTRINFO_MC_DESC 39 #define ENABLE_INSTR_PREDICATE_VERIFIER 40 #include "AMDGPUGenInstrInfo.inc" 41 42 #define GET_SUBTARGETINFO_MC_DESC 43 #include "AMDGPUGenSubtargetInfo.inc" 44 45 #define NoSchedModel NoSchedModelR600 46 #define GET_SUBTARGETINFO_MC_DESC 47 #include "R600GenSubtargetInfo.inc" 48 #undef NoSchedModelR600 49 50 #define GET_REGINFO_MC_DESC 51 #include "AMDGPUGenRegisterInfo.inc" 52 53 #define GET_REGINFO_MC_DESC 54 #include "R600GenRegisterInfo.inc" 55 56 static MCInstrInfo *createAMDGPUMCInstrInfo() { 57 MCInstrInfo *X = new MCInstrInfo(); 58 InitAMDGPUMCInstrInfo(X); 59 return X; 60 } 61 62 static MCRegisterInfo *createAMDGPUMCRegisterInfo(const Triple &TT) { 63 MCRegisterInfo *X = new MCRegisterInfo(); 64 if (TT.getArch() == Triple::r600) 65 InitR600MCRegisterInfo(X, 0); 66 else 67 InitAMDGPUMCRegisterInfo(X, AMDGPU::PC_REG); 68 return X; 69 } 70 71 MCRegisterInfo *llvm::createGCNMCRegisterInfo(AMDGPUDwarfFlavour DwarfFlavour) { 72 MCRegisterInfo *X = new MCRegisterInfo(); 73 InitAMDGPUMCRegisterInfo(X, AMDGPU::PC_REG, DwarfFlavour, DwarfFlavour); 74 return X; 75 } 76 77 static MCSubtargetInfo * 78 createAMDGPUMCSubtargetInfo(const Triple &TT, StringRef CPU, StringRef FS) { 79 if (TT.getArch() == Triple::r600) 80 return createR600MCSubtargetInfoImpl(TT, CPU, /*TuneCPU*/ CPU, FS); 81 return createAMDGPUMCSubtargetInfoImpl(TT, CPU, /*TuneCPU*/ CPU, FS); 82 } 83 84 static MCInstPrinter *createAMDGPUMCInstPrinter(const Triple &T, 85 unsigned SyntaxVariant, 86 const MCAsmInfo &MAI, 87 const MCInstrInfo &MII, 88 const MCRegisterInfo &MRI) { 89 if (T.getArch() == Triple::r600) 90 return new R600InstPrinter(MAI, MII, MRI); 91 return new AMDGPUInstPrinter(MAI, MII, MRI); 92 } 93 94 static MCTargetStreamer * 95 createAMDGPUAsmTargetStreamer(MCStreamer &S, formatted_raw_ostream &OS, 96 MCInstPrinter *InstPrint) { 97 return new AMDGPUTargetAsmStreamer(S, OS); 98 } 99 100 static MCTargetStreamer * createAMDGPUObjectTargetStreamer( 101 MCStreamer &S, 102 const MCSubtargetInfo &STI) { 103 return new AMDGPUTargetELFStreamer(S, STI); 104 } 105 106 static MCTargetStreamer *createAMDGPUNullTargetStreamer(MCStreamer &S) { 107 return new AMDGPUTargetStreamer(S); 108 } 109 110 static MCStreamer *createMCStreamer(const Triple &T, MCContext &Context, 111 std::unique_ptr<MCAsmBackend> &&MAB, 112 std::unique_ptr<MCObjectWriter> &&OW, 113 std::unique_ptr<MCCodeEmitter> &&Emitter) { 114 return createAMDGPUELFStreamer(T, Context, std::move(MAB), std::move(OW), 115 std::move(Emitter)); 116 } 117 118 namespace { 119 120 class AMDGPUMCInstrAnalysis : public MCInstrAnalysis { 121 public: 122 explicit AMDGPUMCInstrAnalysis(const MCInstrInfo *Info) 123 : MCInstrAnalysis(Info) {} 124 125 bool evaluateBranch(const MCInst &Inst, uint64_t Addr, uint64_t Size, 126 uint64_t &Target) const override { 127 if (Inst.getNumOperands() == 0 || !Inst.getOperand(0).isImm() || 128 Info->get(Inst.getOpcode()).operands()[0].OperandType != 129 MCOI::OPERAND_PCREL) 130 return false; 131 132 int64_t Imm = Inst.getOperand(0).getImm(); 133 // Our branches take a simm16, but we need two extra bits to account for 134 // the factor of 4. 135 APInt SignedOffset(18, Imm * 4, true); 136 Target = (SignedOffset.sext(64) + Addr + Size).getZExtValue(); 137 return true; 138 } 139 }; 140 141 } // end anonymous namespace 142 143 static MCInstrAnalysis *createAMDGPUMCInstrAnalysis(const MCInstrInfo *Info) { 144 return new AMDGPUMCInstrAnalysis(Info); 145 } 146 147 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeAMDGPUTargetMC() { 148 149 TargetRegistry::RegisterMCInstrInfo(getTheGCNTarget(), createAMDGPUMCInstrInfo); 150 TargetRegistry::RegisterMCInstrInfo(getTheR600Target(), 151 createR600MCInstrInfo); 152 for (Target *T : {&getTheR600Target(), &getTheGCNTarget()}) { 153 RegisterMCAsmInfo<AMDGPUMCAsmInfo> X(*T); 154 155 TargetRegistry::RegisterMCRegInfo(*T, createAMDGPUMCRegisterInfo); 156 TargetRegistry::RegisterMCSubtargetInfo(*T, createAMDGPUMCSubtargetInfo); 157 TargetRegistry::RegisterMCInstPrinter(*T, createAMDGPUMCInstPrinter); 158 TargetRegistry::RegisterMCInstrAnalysis(*T, createAMDGPUMCInstrAnalysis); 159 TargetRegistry::RegisterMCAsmBackend(*T, createAMDGPUAsmBackend); 160 TargetRegistry::RegisterELFStreamer(*T, createMCStreamer); 161 } 162 163 // R600 specific registration 164 TargetRegistry::RegisterMCCodeEmitter(getTheR600Target(), 165 createR600MCCodeEmitter); 166 TargetRegistry::RegisterObjectTargetStreamer( 167 getTheR600Target(), createAMDGPUObjectTargetStreamer); 168 169 // GCN specific registration 170 TargetRegistry::RegisterMCCodeEmitter(getTheGCNTarget(), 171 createAMDGPUMCCodeEmitter); 172 173 TargetRegistry::RegisterAsmTargetStreamer(getTheGCNTarget(), 174 createAMDGPUAsmTargetStreamer); 175 TargetRegistry::RegisterObjectTargetStreamer( 176 getTheGCNTarget(), createAMDGPUObjectTargetStreamer); 177 TargetRegistry::RegisterNullTargetStreamer(getTheGCNTarget(), 178 createAMDGPUNullTargetStreamer); 179 } 180