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//===-- X86MachineFunctionInfo.cpp - X86 machine function info ------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "X86MachineFunctionInfo.h"
#include "X86RegisterInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
using namespace llvm;
MachineFunctionInfo *X86MachineFunctionInfo::clone(
BumpPtrAllocator &Allocator, MachineFunction &DestMF,
const DenseMap<MachineBasicBlock *, MachineBasicBlock *> &Src2DstMBB)
const {
return DestMF.cloneInfo<X86MachineFunctionInfo>(*this);
}
void X86MachineFunctionInfo::anchor() { }
void X86MachineFunctionInfo::setRestoreBasePointer(const MachineFunction *MF) {
if (!RestoreBasePointerOffset) {
const X86RegisterInfo *RegInfo = static_cast<const X86RegisterInfo *>(
MF->getSubtarget().getRegisterInfo());
unsigned SlotSize = RegInfo->getSlotSize();
for (const MCPhysReg *CSR = MF->getRegInfo().getCalleeSavedRegs();
unsigned Reg = *CSR; ++CSR) {
if (X86::GR64RegClass.contains(Reg) || X86::GR32RegClass.contains(Reg))
RestoreBasePointerOffset -= SlotSize;
}
}
}
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