[PATCH, PR 49089] Don't split AVX256 unaligned loads by default on bdver1 and generic

Fang, Changpeng Changpeng.Fang@amd.com
Fri Jun 17 18:08:00 GMT 2011


>Why not just move AVX256_SPLIT_UNALIGNED_STORE
>and AVX256_SPLIT_UNALIGNED_LOAD to ix86_tune_indices?

I would like to keep the -m option so that at least we can explicitly turn
off the splittings when regressions are found!

By the way, I can add an index for store splitting, if you want.

Thanks,

Changpeng




H.J.
> Changpeng
>
>
>
>>> So, is it OK to commit this patch to trunk, and H.J's original patch + this to 4.6 branch?
>>>
>>>
>
>>I have no problems on -mtune=Bulldozer.  But I object -mtune=generic
>>change and did suggest a different approach for -mtune=generic.
>
>
> .
>
>



--
H.J.




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