On 12/15/2011 11:21 PM, Michael Zolotukhin wrote:
> E.g., in vect-114.c we need permutation only for reversing vector
> elements, even ssse3 isn't required for it ...

Sure.

> while in slp-perm-9 such permutation isn't enough.

Why?  SSSE3 *really can* do arbitrary permutation.  If you say that
isn't enough, then there's something wrong in the back end, and all
you're doing is papering over a bug.

Changing vect_perm to require AVX is wrong.


r~

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