llvm-project/llvm/lib/Target/NVPTX/MCTargetDesc/NVPTXMCTargetDesc.cpp

//===-- NVPTXMCTargetDesc.cpp - NVPTX Target Descriptions -------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file provides NVPTX specific target descriptions.
//
//===----------------------------------------------------------------------===//

#include "NVPTXMCTargetDesc.h"
#include "InstPrinter/NVPTXInstPrinter.h"
#include "NVPTXMCAsmInfo.h"
#include "llvm/MC/MCCodeGenInfo.h"
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/Support/TargetRegistry.h"

using namespace llvm;

#define GET_INSTRINFO_MC_DESC
#include "NVPTXGenInstrInfo.inc"

#define GET_SUBTARGETINFO_MC_DESC
#include "NVPTXGenSubtargetInfo.inc"

#define GET_REGINFO_MC_DESC
#include "NVPTXGenRegisterInfo.inc"

static MCInstrInfo *createNVPTXMCInstrInfo() {
  MCInstrInfo *X = new MCInstrInfo();
  InitNVPTXMCInstrInfo(X);
  return X;
}

static MCRegisterInfo *createNVPTXMCRegisterInfo(const TargetTuple &TT) {
  MCRegisterInfo *X = new MCRegisterInfo();
  // PTX does not have a return address register.
  InitNVPTXMCRegisterInfo(X, 0);
  return X;
}

static MCSubtargetInfo *
createNVPTXMCSubtargetInfo(const TargetTuple &TT, StringRef CPU, StringRef FS) {
  return createNVPTXMCSubtargetInfoImpl(TT, CPU, FS);
}

static MCCodeGenInfo *createNVPTXMCCodeGenInfo(const TargetTuple &TT,
                                               Reloc::Model RM,
                                               CodeModel::Model CM,
                                               CodeGenOpt::Level OL) {
  MCCodeGenInfo *X = new MCCodeGenInfo();

  // The default relocation model is used regardless of what the client has
  // specified, as it is the only relocation model currently supported.
  X->initMCCodeGenInfo(Reloc::Default, CM, OL);
  return X;
}

static MCInstPrinter *createNVPTXMCInstPrinter(const TargetTuple &T,
                                               unsigned SyntaxVariant,
                                               const MCAsmInfo &MAI,
                                               const MCInstrInfo &MII,
                                               const MCRegisterInfo &MRI) {
  if (SyntaxVariant == 0)
    return new NVPTXInstPrinter(MAI, MII, MRI);
  return nullptr;
}

// Force static initialization.
extern "C" void LLVMInitializeNVPTXTargetMC() {
  for (Target *T : {&TheNVPTXTarget32, &TheNVPTXTarget64}) {
    // Register the MC asm info.
    RegisterMCAsmInfo<NVPTXMCAsmInfo> X(*T);

    // Register the MC codegen info.
    TargetRegistry::RegisterMCCodeGenInfo(*T, createNVPTXMCCodeGenInfo);

    // Register the MC instruction info.
    TargetRegistry::RegisterMCInstrInfo(*T, createNVPTXMCInstrInfo);

    // Register the MC register info.
    TargetRegistry::RegisterMCRegInfo(*T, createNVPTXMCRegisterInfo);

    // Register the MC subtarget info.
    TargetRegistry::RegisterMCSubtargetInfo(*T, createNVPTXMCSubtargetInfo);

    // Register the MCInstPrinter.
    TargetRegistry::RegisterMCInstPrinter(*T, createNVPTXMCInstPrinter);
  }
}