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Rename a function.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170996 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nadav Rotem 2012-12-23 07:30:09 +00:00
parent d54fed2786
commit 677689cf5d
1 changed files with 4 additions and 4 deletions
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8
lib/Target/X86/X86FrameLowering.cpp
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@ -625,12 +625,12 @@ uint32_t X86FrameLowering::getCompactUnwindEncoding(MachineFunction &MF) const {
return CompactUnwindEncoding; return CompactUnwindEncoding;
} }
/// colobbersTheStack - This function checks if any of the users of EFLAGS /// usesTheStack - This function checks if any of the users of EFLAGS
/// copies the EFLAGS. We know that the code that lowers COPY of EFLAGS has /// copies the EFLAGS. We know that the code that lowers COPY of EFLAGS has
/// to use the stack, and if we don't adjust the stack we clobber the first /// to use the stack, and if we don't adjust the stack we clobber the first
/// frame index. /// frame index.
/// See X86InstrInfo::copyPhysReg. /// See X86InstrInfo::copyPhysReg.
static bool colobbersTheStack(MachineFunction &MF) { static bool usesTheStack(MachineFunction &MF) {
MachineRegisterInfo &MRI = MF.getRegInfo(); MachineRegisterInfo &MRI = MF.getRegInfo();
for (MachineRegisterInfo::reg_iterator ri = MRI.reg_begin(X86::EFLAGS), for (MachineRegisterInfo::reg_iterator ri = MRI.reg_begin(X86::EFLAGS),
@ -696,7 +696,7 @@ void X86FrameLowering::emitPrologue(MachineFunction &MF) const {
!MFI->hasVarSizedObjects() && // No dynamic alloca. !MFI->hasVarSizedObjects() && // No dynamic alloca.
!MFI->adjustsStack() && // No calls. !MFI->adjustsStack() && // No calls.
!IsWin64 && // Win64 has no Red Zone !IsWin64 && // Win64 has no Red Zone
!colobbersTheStack(MF) && // Don't push and pop. !usesTheStack(MF) && // Don't push and pop.
!MF.getTarget().Options.EnableSegmentedStacks) { // Regular stack !MF.getTarget().Options.EnableSegmentedStacks) { // Regular stack
uint64_t MinSize = X86FI->getCalleeSavedFrameSize(); uint64_t MinSize = X86FI->getCalleeSavedFrameSize();
if (HasFP) MinSize += SlotSize; if (HasFP) MinSize += SlotSize;