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[Bug target/66049] [6 regression] Few AArch64 extend and add with shift tests generates sub optimal code with trunk gcc 6.0.
- From: "vekumar at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 15 May 2015 15:37:56 +0000
- Subject: [Bug target/66049] [6 regression] Few AArch64 extend and add with shift tests generates sub optimal code with trunk gcc 6.0.
- Auto-submitted: auto-generated
- References: <bug-66049-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66049
--- Comment #6 from vekumar at gcc dot gnu.org ---
(In reply to Ramana Radhakrishnan from comment #5)
> (In reply to vekumar from comment #4)
> > (In reply to ktkachov from comment #3)
> > > Venkat, are you planning to submit this patch to gcc-patches?
> > > Also, does this mean we can remove the patterns that do arith+shift using
> > > MULT rtxes? (like *adds_<optab><mode>_multp2)
> >
> > Hi Kyrill,
> >
> > Yes I am planing to submit the patch. But before that I need to test by
> > putting some assert and check if *adds_<optab><mode>_multp2 and similar
> > patterns are not used anymore.
>
> So this is a regression on GCC 6. what's holding up pushing this patch onto
> gcc-patches@ ?
GCC bootstrap and regression testing completed. I am doing SPEC 2006 INT run
just to make sure no surprises. will post it in a day or two.