El Mon, Jan 29, 2007 at 02:28:34PM -0500, Daniel Berlin ens deleit� amb les
seg�ents paraules:
> On 1/29/07, Razya Ladelsky <[EMAIL PROTECTED]> wrote:
>> Razya Ladelsky/Haifa/IBM wrote on 29/01/2007 13:46:33:
>>
>>> Hi,
>>>
>>> Does gcc apply inter-procedural optimizations across functions called
>> using
>>> a function pointer? I guess that gcc performs conservatively assuming
>> that
>>> the pointer could point everywhere because the pointer is a declared as
>> a
>>> global variable and could be changed in any place. Is it true?
>>
>> Yes.
>> The callgraph does not include these calls.
>
> Well, not quite.
>
> While the callgraph doesn't include them, ipa-pta will come up with a
> conservatively correct set for them.
>
> IN the presence of static function pointers, we will come up with a
> completely accurate set for them unless they escape
ok, I was wondering the possibility to apply ipa optimizations to a
predefined set of functions called by the same pointer.
Thanks for the explanation.
Salut!
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