https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67323
--- Comment #4 from Michael Collison <michael.collison at linaro dot org> --- Hi Richard, No I do not have a fix now. Thanks for the info on the policy. On 08/25/2015 03:05 AM, rguenther at suse dot de wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67323 > > --- Comment #3 from rguenther at suse dot de <rguenther at suse dot de> --- > On Tue, 25 Aug 2015, michael.collison at linaro dot org wrote: > >> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67323 >> >> --- Comment #2 from Michael Collison <michael.collison at linaro dot org> --- >> Richard, >> >> Should I create a test case that fails until you resolve this in GCC 6? > If you can provide one that I can check in together with a fix that > would be nice. Having it in the tree now and FAILing isn't according > to our policies. > >> On 08/25/2015 02:14 AM, rguenth at gcc dot gnu.org wrote: >>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67323 >>> >>> Richard Biener <rguenth at gcc dot gnu.org> changed: >>> >>> What |Removed |Added >>> ---------------------------------------------------------------------------- >>> Status|UNCONFIRMED |ASSIGNED >>> Last reconfirmed| |2015-08-25 >>> CC|richard.guenther at gmail dot com |rguenth at gcc >>> dot gnu.org >>> Depends on| |66721 >>> Assignee|unassigned at gcc dot gnu.org |rguenth at gcc >>> dot gnu.org >>> Ever confirmed|0 |1 >>> >>> --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- >>> Confirmed. We go down the SLP path here because the vectorizer thinks that >>> SLP is always cheaper than using interleaving (which generally is true >>> if there were not targets which can do the load plus interleave with >>> load-lanes ...). >>> >>> I think this may be a regression as well because I enhanced SLP to apply >>> to way more cases. >>> >>> Note that my plan is to make the vectorizer consider both (well, not really, >>> but this bug shows I maybe should try), SLP and non-SLP, and evaluate based >>> on costs which route to go. >>> >>> >>> Referenced Bugs: >>> >>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66721 >>> [Bug 66721] [6 regression] gcc.target/i386/pr61403.c FAILs >>
