-//====- X86MachineFuctionInfo.cpp - X86 machine function info ---*- C++ -*-===//
-//
+//===-- X86MachineFuctionInfo.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/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;
+ }
+ }
+}
+