llvm/lib/Target/AMDGPU/R600Subtarget.cpp

   1 //===-- R600Subtarget.cpp - R600 Subtarget Information --------------------===//
   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 /// Implements the R600 specific subclass of TargetSubtarget.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "R600Subtarget.h"
  15 #include "MCTargetDesc/R600MCTargetDesc.h"
  16
  17 using namespace llvm;
  18
  19 #define DEBUG_TYPE "r600-subtarget"
  20
  21 #define GET_SUBTARGETINFO_TARGET_DESC
  22 #define GET_SUBTARGETINFO_CTOR
  23 #include "R600GenSubtargetInfo.inc"
  24
  25 R600Subtarget::R600Subtarget(const Triple &TT, StringRef GPU, StringRef FS,
  26                              const TargetMachine &TM)
  27     : R600GenSubtargetInfo(TT, GPU, /*TuneCPU*/ GPU, FS), AMDGPUSubtarget(TT),
  28       InstrInfo(*this),
  29       FrameLowering(TargetFrameLowering::StackGrowsUp, getStackAlignment(), 0),
  30       TLInfo(TM, initializeSubtargetDependencies(TT, GPU, FS)),
  31       InstrItins(getInstrItineraryForCPU(GPU)) {
  32   AddressableLocalMemorySize = LocalMemorySize;
  33 }
  34
  35 R600Subtarget &R600Subtarget::initializeSubtargetDependencies(const Triple &TT,
  36                                                               StringRef GPU,
  37                                                               StringRef FS) {
  38   SmallString<256> FullFS("+promote-alloca,");
  39   FullFS += FS;
  40   ParseSubtargetFeatures(GPU, /*TuneCPU*/ GPU, FullFS);
  41
  42   HasMulU24 = getGeneration() >= EVERGREEN;
  43   HasMulI24 = hasCaymanISA();
  44
  45   return *this;
  46 }