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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/101909] 73% regression on tfft benchmark for
 -O2 -ftree-loop-vectorize compared to -O2 on zen hardware
Date: Mon, 16 Aug 2021 09:08:45 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101909

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|middle-end                  |tree-optimization
           Keywords|                            |missed-optimization
             Blocks|                            |53947
             Target|                            |x86_64-*-*
                 CC|                            |rguenth at gcc dot gnu.org

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
So that's znver1 (split AVX IIRC) compared to znver2?


Referenced Bugs:

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D53947
[Bug 53947] [meta-bug] vectorizer missed-optimizations=