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//===-- X86MachineFunctionInfo.cpp - X86 machine function info ------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "X86MachineFunctionInfo.h"
#include "X86RegisterInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h"
using namespace llvm;
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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