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Re: combine permutations in gimple
On Wed, Aug 15, 2012 at 02:15:03PM +0200, Richard Guenther wrote:
> Ok. That would still leave us with the issue Ramana brought up - the
> target hook returning true unconditionally if a generic permute is implemented.
> We just avoid generic expansion by tree-vect-generic.c that way.
Yeah, if there is a generic permute, can_vec_perm_p will return true always
for the modes for which it is available. Which is why I've been suggesting
also the target hook which should return false if only generic permute is
going to be used.