1 //===-- X86MachineFunctionInfo.cpp - X86 machine function info ------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "X86MachineFunctionInfo.h"
11 #include "X86RegisterInfo.h"
12 #include "llvm/CodeGen/MachineRegisterInfo.h"
13 #include "llvm/CodeGen/TargetSubtargetInfo.h"
17 void X86MachineFunctionInfo::anchor() { }
19 void X86MachineFunctionInfo::setRestoreBasePointer(const MachineFunction *MF) {
20 if (!RestoreBasePointerOffset) {
21 const X86RegisterInfo *RegInfo = static_cast<const X86RegisterInfo *>(
22 MF->getSubtarget().getRegisterInfo());
23 unsigned SlotSize = RegInfo->getSlotSize();
24 for (const MCPhysReg *CSR = MF->getRegInfo().getCalleeSavedRegs();
25 unsigned Reg = *CSR; ++CSR) {
26 if (X86::GR64RegClass.contains(Reg) || X86::GR32RegClass.contains(Reg))
27 RestoreBasePointerOffset -= SlotSize;