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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/114485] [13/14 Regression] Wrong code with
 -O3 -march=rv64gcv on riscv or `-O3 -march=armv9-a` for aarch64
Date: Tue, 26 Mar 2024 20:39:07 +0000
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X-Bugzilla-Component: tree-optimization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114485

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |12.3.0
   Target Milestone|---                         |13.3
   Last reconfirmed|                            |2024-03-26
             Blocks|                            |53947
             Status|UNCONFIRMED                 |NEW
      Known to fail|                            |13.1.0
            Summary|[14] Wrong code with -O3    |[13/14 Regression] Wrong
                   |-march=3Drv64gcv on riscv     |code with -O3
                   |                            |-march=3Drv64gcv on riscv =
or
                   |                            |`-O3 -march=3Darmv9-a` for
                   |                            |aarch64
     Ever confirmed|0                           |1

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed. Yes it does look very similar if not the same.
This one does not even need -fno-vect-cost-model nor -fwrapv for aarch64 ev=
en.


Referenced Bugs:

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