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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/110176] [10/11/12/13/14 Regression] wrong
 code at -Os and above on x86_64-linux-gnu
Date: Thu, 08 Jun 2023 22:10:08 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110176

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
10.4.0:
Value numbering stmt =3D _8 =3D _7 <=3D i_19;
Applying pattern match.pd:4279, gimple-match.c:13484
Match-and-simplified _7 <=3D i_19 to 1
RHS _7 <=3D i_19 simplified to 1
Setting value number of _8 to 1


GCC 10.3.0:
Value numbering stmt =3D _8 =3D _7 <=3D i_19;
Applying pattern match.pd:4274, gimple-match.c:7895
Match-and-simplified _7 <=3D i_19 to 1
RHS _7 <=3D i_19 simplified to 1
Not changing value number of _8 from VARYING to 1


Maybe r10-9757-gec97d2e842022a3f112e27d6d8=