llvm/lib/Target/X86/X86MachineFunctionInfo.cpp

   1 //===-- X86MachineFunctionInfo.cpp - X86 machine function info ------------===//
   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 #include "X86MachineFunctionInfo.h"
  10 #include "X86RegisterInfo.h"
  11 #include "llvm/CodeGen/MachineRegisterInfo.h"
  12 #include "llvm/CodeGen/TargetSubtargetInfo.h"
  13
  14 using namespace llvm;
  15
  16 yaml::X86MachineFunctionInfo::X86MachineFunctionInfo(
  17     const llvm::X86MachineFunctionInfo &MFI)
  18     : AMXProgModel(MFI.getAMXProgModel()) {}
  19
  20 void yaml::X86MachineFunctionInfo::mappingImpl(yaml::IO &YamlIO) {
  21   MappingTraits<X86MachineFunctionInfo>::mapping(YamlIO, *this);
  22 }
  23
  24 MachineFunctionInfo *X86MachineFunctionInfo::clone(
  25     BumpPtrAllocator &Allocator, MachineFunction &DestMF,
  26     const DenseMap<MachineBasicBlock *, MachineBasicBlock *> &Src2DstMBB)
  27     const {
  28   return DestMF.cloneInfo<X86MachineFunctionInfo>(*this);
  29 }
  30
  31 void X86MachineFunctionInfo::initializeBaseYamlFields(
  32     const yaml::X86MachineFunctionInfo &YamlMFI) {
  33   AMXProgModel = YamlMFI.AMXProgModel;
  34 }
  35
  36 void X86MachineFunctionInfo::anchor() { }
  37
  38 void X86MachineFunctionInfo::setRestoreBasePointer(const MachineFunction *MF) {
  39   if (!RestoreBasePointerOffset) {
  40     const X86RegisterInfo *RegInfo = static_cast<const X86RegisterInfo *>(
  41       MF->getSubtarget().getRegisterInfo());
  42     unsigned SlotSize = RegInfo->getSlotSize();
  43     for (const MCPhysReg *CSR = MF->getRegInfo().getCalleeSavedRegs();
  44          unsigned Reg = *CSR; ++CSR) {
  45       if (X86::GR64RegClass.contains(Reg) || X86::GR32RegClass.contains(Reg))
  46         RestoreBasePointerOffset -= SlotSize;
  47     }
  48   }
  49 }
  50