llvm/lib/CodeGen/TargetSubtargetInfo.cpp

   1 //===- TargetSubtargetInfo.cpp - General Target 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 This file describes the general parts of a Subtarget.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #include "llvm/CodeGen/TargetSubtargetInfo.h"
  14
  15 using namespace llvm;
  16
  17 TargetSubtargetInfo::TargetSubtargetInfo(
  18     const Triple &TT, StringRef CPU, StringRef TuneCPU, StringRef FS,
  19     ArrayRef<SubtargetFeatureKV> PF, ArrayRef<SubtargetSubTypeKV> PD,
  20     const MCWriteProcResEntry *WPR, const MCWriteLatencyEntry *WL,
  21     const MCReadAdvanceEntry *RA, const InstrStage *IS, const unsigned *OC,
  22     const unsigned *FP)
  23     : MCSubtargetInfo(TT, CPU, TuneCPU, FS, PF, PD, WPR, WL, RA, IS, OC, FP) {}
  24
  25 TargetSubtargetInfo::~TargetSubtargetInfo() = default;
  26
  27 bool TargetSubtargetInfo::enableAtomicExpand() const {
  28   return true;
  29 }
  30
  31 bool TargetSubtargetInfo::enableIndirectBrExpand() const {
  32   return false;
  33 }
  34
  35 bool TargetSubtargetInfo::enableMachineScheduler() const {
  36   return false;
  37 }
  38
  39 bool TargetSubtargetInfo::enableJoinGlobalCopies() const {
  40   return enableMachineScheduler();
  41 }
  42
  43 bool TargetSubtargetInfo::enableRALocalReassignment(
  44     CodeGenOptLevel OptLevel) const {
  45   return true;
  46 }
  47
  48 bool TargetSubtargetInfo::enablePostRAScheduler() const {
  49   return getSchedModel().PostRAScheduler;
  50 }
  51
  52 bool TargetSubtargetInfo::enablePostRAMachineScheduler() const {
  53   return enableMachineScheduler() && enablePostRAScheduler();
  54 }
  55
  56 bool TargetSubtargetInfo::useAA() const {
  57   return false;
  58 }
  59
  60 void TargetSubtargetInfo::mirFileLoaded(MachineFunction &MF) const { }