[LLVMdev] Purpose of PROLOG_LABEL in function prologue?

[Cameron Esfahani]

I'll look at why they're getting exported...

On Aug 3, 2010, at 3:14 PM, Eric Christopher wrote:

> 
> On Aug 3, 2010, at 3:12 PM, Eric Christopher wrote:
> 
>> 
>> 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:
>>> 
>>> _main:
>>> 	pushq	%rbp
>>> Ltmp18:
>>> 	movq	%rsp, %rbp
>>> Ltmp19:
>>> 	subq	$320, %rsp
>>> Ltmp20:
>>> 	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.
> 
> Oh, though they should be local and not exported at all.
> 
> -eric

Cameron Esfahani
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