X86MachineFunctionInfo.cpp [plain text]
#include "X86MachineFunctionInfo.h"
#include "X86RegisterInfo.h"
#include "llvm/Target/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 =
RegInfo->X86RegisterInfo::getCalleeSavedRegs(MF);
unsigned Reg = *CSR;
++CSR)
{
if (X86::GR64RegClass.contains(Reg) || X86::GR32RegClass.contains(Reg))
RestoreBasePointerOffset -= SlotSize;
}
}
}