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Skip over the label which marks the beginning of the function before inserting prologue code. 

llvm-svn: 46546
This commit is contained in:
Evan Cheng 2008-01-30 03:57:33 +00:00
parent cd2bb20b5f
commit ed17ef7e18
1 changed files with 6 additions and 0 deletions
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6
llvm/lib/Target/X86/X86RegisterInfo.cpp
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@ -525,6 +525,12 @@ void X86RegisterInfo::emitPrologue(MachineFunction &MF) const {
X86FI->getCalleeSavedFrameSize() +(-TailCallReturnAddrDelta));
uint64_t NumBytes = StackSize - X86FI->getCalleeSavedFrameSize();
// Skip over the label which mark the beginning of the function.
if (MMI && MMI->needsFrameInfo() &&
MBBI != MBB.end() &&
MBBI->getOpcode() == X86::LABEL)
++MBBI;
// Insert stack pointer adjustment for later moving of return addr. Only
// applies to tail call optimized functions where the callee argument stack
// size is bigger than the callers.