strlen() and constant folding

[Bryan Christ]

thanks.  what about about the case i described below?

On Tue, Jun 30, 2009 at 11:46 AM, Andrew Haley<aph@redhat.com> wrote:
> Bryan Christ wrote:
>> Interesting.  Is this documented somewhere?
>
> I doubt it.  Most optimizations aren't specially documented.
>
>> Is it reliable cross-platform?
>
> Yes.
>
>> What if...
>>
>> int poo(void)
>> {
>>    const char *test="test";
>>    const char *foo;
>>
>>    foo=test;
>>
>>    return strlen(foo);
>> }
>
> poo():
>        movl    $4, %eax
>        ret
>
> Andrew.
>
>



-- 
Bryan
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