From e3d8e42e273957740fbca6529a6ad7136af16a61 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Sat, 20 Jan 2007 10:22:33 +0000 Subject: Round up stack to multiple of alignment only if it's a leaf function without alloca. llvm-svn: 33401 --- llvm/lib/Target/ARM/ARMRegisterInfo.cpp | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'llvm/lib/Target/ARM/ARMRegisterInfo.cpp') diff --git a/llvm/lib/Target/ARM/ARMRegisterInfo.cpp b/llvm/lib/Target/ARM/ARMRegisterInfo.cpp index 767be023a5a..979cb513ef9 100644 --- a/llvm/lib/Target/ARM/ARMRegisterInfo.cpp +++ b/llvm/lib/Target/ARM/ARMRegisterInfo.cpp @@ -917,14 +917,17 @@ void ARMRegisterInfo::emitPrologue(MachineFunction &MF) const { // If necessary, add one more SUBri to account for the call frame // and/or local storage, alloca area. - if (MFI->hasCalls() && !hasFP(MF)) + if (MFI->hasCalls() || MF.getFrameInfo()->hasVarSizedObjects()) { // We reserve argument space for call sites in the function immediately on // entry to the current function. This eliminates the need for add/sub // brackets around call sites. - NumBytes += MFI->getMaxCallFrameSize(); + if (!hasFP(MF)) + NumBytes += MFI->getMaxCallFrameSize(); + + // Round the size to a multiple of the alignment. + NumBytes = (NumBytes+Align-1)/Align*Align; + } - // Round the size to a multiple of the alignment. - NumBytes = (NumBytes+Align-1)/Align*Align; MFI->setStackSize(NumBytes); // Determine starting offsets of spill areas. -- cgit v1.2.3