On Thu, Oct 13, 2011 at 6:57 PM, Andi Kleen wrote:
>> Or I am missing someting?
>
> I often see the x86 vectorizer with -mtune=generic generate a lot of
> complicated code just to adjust for potential misalignment.
>
> My thought was just if the alias oracle knows what the original
> declaration i
On Thu, Oct 13, 2011 at 06:57:47PM +0200, Andi Kleen wrote:
> > Or I am missing someting?
>
> I often see the x86 vectorizer with -mtune=generic generate a lot of
> complicated code just to adjust for potential misalignment.
>
> My thought was just if the alias oracle knows what the original
> de
> Or I am missing someting?
I often see the x86 vectorizer with -mtune=generic generate a lot of
complicated code just to adjust for potential misalignment.
My thought was just if the alias oracle knows what the original
declaration is, and it's available for changes (e.g. LTO), it would be
like
On Thu, Oct 13, 2011 at 4:54 PM, Andi Kleen wrote:
> Artem Shinkarov writes:
>>
>> 1) Currently in C we cannot provide information that an array is
>> aligned to a certain number. The problem is hidden in the fact, that
>
> Have you considered doing it the other way round: when an optimization
>
Artem Shinkarov writes:
>
> 1) Currently in C we cannot provide information that an array is
> aligned to a certain number. The problem is hidden in the fact, that
Have you considered doing it the other way round: when an optimization
needs something to be aligned, make the declaration aligned?
