32 lines
1.1 KiB
C++
32 lines
1.1 KiB
C++
//===-- X86MachineFunctionInfo.cpp - X86 machine function info ------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "X86MachineFunctionInfo.h"
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#include "X86RegisterInfo.h"
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#include "llvm/CodeGen/MachineRegisterInfo.h"
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#include "llvm/CodeGen/TargetSubtargetInfo.h"
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using namespace llvm;
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void X86MachineFunctionInfo::anchor() { }
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void X86MachineFunctionInfo::setRestoreBasePointer(const MachineFunction *MF) {
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if (!RestoreBasePointerOffset) {
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const X86RegisterInfo *RegInfo = static_cast<const X86RegisterInfo *>(
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MF->getSubtarget().getRegisterInfo());
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unsigned SlotSize = RegInfo->getSlotSize();
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for (const MCPhysReg *CSR = MF->getRegInfo().getCalleeSavedRegs();
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unsigned Reg = *CSR; ++CSR) {
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if (X86::GR64RegClass.contains(Reg) || X86::GR32RegClass.contains(Reg))
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RestoreBasePointerOffset -= SlotSize;
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}
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}
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}
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