contrib/llvm-project/llvm/lib/Target/AMDGPU/MCTargetDesc/AMDGPUMCTargetDesc.cpp

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