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Disable stack realignment for functions with dynamic-sized alloca's

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50155 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2008-04-23 18:16:43 +00:00
parent 890fe888be
commit 35410a493b
1 changed files with 4 additions and 1 deletions
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5
lib/Target/X86/X86RegisterInfo.cpp
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@ -267,7 +267,10 @@ bool X86RegisterInfo::hasFP(const MachineFunction &MF) const {
bool X86RegisterInfo::needsStackRealignment(const MachineFunction &MF) const {
MachineFrameInfo *MFI = MF.getFrameInfo();;
return (MFI->getMaxAlignment() > StackAlign);
// FIXME: Currently we don't support stack realignment for functions with
// variable-sized allocas
return (MFI->getMaxAlignment() > StackAlign &&
!MFI->hasVarSizedObjects());
}
bool X86RegisterInfo::hasReservedCallFrame(MachineFunction &MF) const {