[Bug tree-optimization/126474] wrong vec_cond+VIEW_CONVERT+negate -> .COND_NEG fold

"pinskia at gcc dot gnu.org via Gcc-bugs" <[email protected]> Wed, 29 Jul 2026 16:26:12 +0000

Newsgroups	gmane.comp.gcc.bugs
Message-ID	<[email protected]/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126474

Drea Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2026-07-29
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Drea Pinski <pinskia at gcc dot gnu.org> ---
Confirmed. Maybe the match part of the pattern should be using nop_convert but
I could be wrong because that might still introduce undefined behavior though I
don't think that is checked currently.