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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33400 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-01-20 10:17:53 +00:00
parent 5ad334fbda
commit 2bd7b2b41f
1 changed files with 3 additions and 2 deletions
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5
lib/Target/X86/X86RegisterInfo.cpp
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@ -998,12 +998,13 @@ void X86RegisterInfo::emitPrologue(MachineFunction &MF) const {
// Get the number of bytes to allocate from the FrameInfo
unsigned NumBytes = MFI->getStackSize();
if (MFI->hasCalls() && !hasFP(MF))
if (MFI->hasCalls() || MF.getFrameInfo()->hasVarSizedObjects()) {
// When we have no frame pointer, we reserve argument space for call sites
// in the function immediately on entry to the current function. This
// eliminates the need for add/sub ESP brackets around call sites.
//
NumBytes += MFI->getMaxCallFrameSize();
if (!hasFP(MF))
NumBytes += MFI->getMaxCallFrameSize();
// Round the size to a multiple of the alignment (don't forget the 4/8 byte
// offset pushed by the caller though). No need to align the stack if this