R600Subtarget.cpp

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//===-- R600Subtarget.cpp - R600 Subtarget Information --------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
/// \file
/// Implements the R600 specific subclass of TargetSubtarget.
//
//===----------------------------------------------------------------------===//
 
#include "R600Subtarget.h"
#include "AMDGPUSelectionDAGInfo.h"
#include "AMDGPUTargetMachine.h"
#include "MCTargetDesc/R600MCTargetDesc.h"
 
using namespace llvm;
 
#define DEBUG_TYPE "r600-subtarget"
 
#define GET_SUBTARGETINFO_TARGET_DESC
#define GET_SUBTARGETINFO_CTOR
#include "R600GenSubtargetInfo.inc"
 
R600Subtarget::R600Subtarget(const Triple &TT, StringRef GPU, StringRef FS,
                             const AMDGPUTargetMachine &TM)
    : R600GenSubtargetInfo(TT, GPU, /*TuneCPU*/ GPU, FS),
      AMDGPUSubtarget(TT, TM.getCLOpts()), InstrInfo(*this),
      FrameLowering(TargetFrameLowering::StackGrowsUp, getStackAlignment(), 0),
      TLInfo(TM, initializeSubtargetDependencies(TT, GPU, FS)),
      InstrItins(getInstrItineraryForCPU(GPU)) {
  LocalMemorySize = AddressableLocalMemorySize;
  // R600 has no MaxWavesPerEU subtarget feature.
  MaxWavesPerEU = 10;
  TSInfo = std::make_unique<AMDGPUSelectionDAGInfo>();
}
 
R600Subtarget::~R600Subtarget() = default;
 
const SelectionDAGTargetInfo *R600Subtarget::getSelectionDAGInfo() const {
  return TSInfo.get();
}
 
R600Subtarget &R600Subtarget::initializeSubtargetDependencies(const Triple &TT,
                                                              StringRef GPU,
                                                              StringRef FS) {
  ParseSubtargetFeatures(GPU, /*TuneCPU*/ GPU, FS);
 
  HasMulU24 = getGeneration() >= EVERGREEN;
  HasMulI24 = hasCaymanISA();
 
  return *this;
}