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[Bug rtl-optimization/56766] Fails to combine (vec_select (vec_concat ...)) to (vec_merge ...)
- From: "rguenther at suse dot de" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 11 Jun 2015 13:47:04 +0000
- Subject: [Bug rtl-optimization/56766] Fails to combine (vec_select (vec_concat ...)) to (vec_merge ...)
- Auto-submitted: auto-generated
- References: <bug-56766-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56766
--- Comment #17 from rguenther at suse dot de <rguenther at suse dot de> ---
On Thu, 11 Jun 2015, ubizjak at gmail dot com wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56766
>
> --- Comment #16 from UroÅ Bizjak <ubizjak at gmail dot com> ---
> (In reply to Richard Biener from comment #8)
> > No.
>
> [...]
>
> > That was why I was suggesting to add additional patterns rather than
> > replacing the existing ones...
>
> So, there is no other way than using "the ugly" patch that adds missing
> patterns.
>
> Please try the patch, attached in the message above.
That works.