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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/115395] [15 regression] libarchive
 miscompiled with -O2 -march=znver2 -fno-vect-cost-model
Date: Sat, 08 Jun 2024 12:37:52 +0000
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X-Bugzilla-Keywords: wrong-code
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D115395

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2024-06-08
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.

Looks like it is doing the add twice:
```
  vect_offset_14.29_104 =3D _84 + vect__18.28_103;
  _106 =3D .REDUC_PLUS (vect_offset_14.29_104);
  _107 =3D offset_9 + _106;
```

Once before the reduction and once after.=