diff options
| -rw-r--r-- | lib/Target/X86/X86RegisterInfo.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp index c5ff525bdb..63d2821809 100644 --- a/lib/Target/X86/X86RegisterInfo.cpp +++ b/lib/Target/X86/X86RegisterInfo.cpp @@ -450,12 +450,16 @@ bool X86RegisterInfo::hasFP(const MachineFunction &MF) const { bool X86RegisterInfo::needsStackRealignment(const MachineFunction &MF) const { const MachineFrameInfo *MFI = MF.getFrameInfo(); + bool requiresRealignment = + RealignStack && (MFI->getMaxAlignment() > StackAlign); // FIXME: Currently we don't support stack realignment for functions with // variable-sized allocas - return (RealignStack && - (MFI->getMaxAlignment() > StackAlign && - !MFI->hasVarSizedObjects())); + if (requiresRealignment && MFI->hasVarSizedObjects()) + llvm_report_error( + "Stack realignment in presense of dynamic allocas is not supported"); + + return requiresRealignment; } bool X86RegisterInfo::hasReservedCallFrame(MachineFunction &MF) const { |