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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/110206] [14 Regression] wrong code with -Os
 -march=cascadelake
Date: Sun, 11 Jun 2023 16:39:36 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110206

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
There is a difference at the gimple level even:
trunk:
  _3 =3D { 204, 204, 204, 204 } >> u_7(D);

GCC 13.1:
  _15 =3D BIT_FIELD_REF <u_7(D), 8, 0>;
  _16 =3D 204 >> _15;
  _17 =3D BIT_FIELD_REF <u_7(D), 8, 8>;
  _18 =3D 204 >> _17;
  _19 =3D BIT_FIELD_REF <u_7(D), 8, 16>;
  _20 =3D 204 >> _19;
  _21 =3D BIT_FIELD_REF <u_7(D), 8, 24>;
  _22 =3D 204 >> _21;
  _3 =3D {_16, _18, _20, _22};=