[LAD] gcc and pointer aliasing... missing optimizations in some cases

Tim Blechmann tim at klingt.org
Sat Dec 26 09:50:40 UTC 2009


>>> Thus telling the compiler that `this` is not an alias when
>>> process() is called.
>>
>> On second thought... since those didn't work for me, perhaps part of
>> the problem is that osc_block is a global variable, and thus there's
>> no way to prove __restrict__ on it.
>>
>> -gabriel
>
> fields of structs are not unaliased, even when the pointer to the struct
> is __restrict__

did you check http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14187?

tim

-- 
tim at klingt.org
http://tim.klingt.org

You can play a shoestring if you're sincere
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