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From: "jamborm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/113833] 435.gromacs fails verification on
 with -Ofast -march={cascadelake,icelake-server} and PGO after
 r14-7272-g57f611604e8bab
Date: Mon, 12 Feb 2024 12:57:31 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113833

--- Comment #4 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Created attachment 57397
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D57397&action=3Dedit
-fopt-info-vec before/after comparison

(In reply to Richard Biener from comment #3)
> A compare before/after the patch of -fopt-info-vec output might show the =
few
> cases that are affected by the patch.

I Hope I have not messed anything up.  I have added -fopt-info-vec right af=
ter
-fprofile-use into the spec config and then grepped the output for
':[^:]*:[^:]*: optimized'.  Then I sorted (because the build was parallel) =
and
compared the output and it seems there are quite a few *fewer* instances of
vectorization happening.=