diff options
Diffstat (limited to 'lib/Target/X86/X86InstrInfo.cpp')
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp index 277e043..6f8b098 100644 --- a/lib/Target/X86/X86InstrInfo.cpp +++ b/lib/Target/X86/X86InstrInfo.cpp @@ -4166,6 +4166,10 @@ MachineInstr* X86InstrInfo::foldMemoryOperandImpl(MachineFunction &MF, const MachineFrameInfo *MFI = MF.getFrameInfo(); unsigned Size = MFI->getObjectSize(FrameIndex); unsigned Alignment = MFI->getObjectAlignment(FrameIndex); + // If the function stack isn't realigned we don't want to fold instructions + // that need increased alignment. + if (!RI.needsStackRealignment(MF)) + Alignment = std::min(Alignment, TM.getFrameLowering()->getStackAlignment()); if (Ops.size() == 2 && Ops[0] == 0 && Ops[1] == 1) { unsigned NewOpc = 0; unsigned RCSize = 0; |