[LLVMdev] Purpose of PROLOG_LABEL in function prologue?
echristo at apple.com
Tue Aug 3 15:12:35 PDT 2010
On Aug 3, 2010, at 3:04 PM, Cameron Esfahani wrote:
> I've been building/dumping some x86_64 code and I've noticed that each of the routines has 3 temporary symbols, à la:
> pushq %rbp
> movq %rsp, %rbp
> subq $320, %rsp
> movl %ecx, -276(%rbp)
> I've tracked them back to emitPrologue in X86RegisterInfo.cpp. I'm wonder what's their purpose?
> They're filling up my symbol table...
EH ranges for unwind info. If you look later on in the file for the symbols you'll see them.
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