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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/107115] Wrong codegen from TBAA under stores
 that change effective type?
Date: Sat, 01 Oct 2022 23:34:24 +0000
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X-Bugzilla-Type: changed
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: rtl-optimization
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: alias, wrong-code
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107115

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
          Component|middle-end                  |rtl-optimization
   Last reconfirmed|                            |2022-10-01
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The tree level looks fine, though I didn't look at the aliasing info that is
exported:
  <bb 2> [local count: 1073741824]:
  MEM[(long int *)p4_2(D)] =3D 1;
  _6 =3D (long unsigned int) index1_3(D);
  _7 =3D _6 * 8;
  _8 =3D p4_2(D) + _7;
  *_8 =3D 2;
  _9 =3D (long unsigned int) index2_4(D);
  _10 =3D _9 * 8;
  _11 =3D p4_2(D) + _10;
  _12 =3D *_11;
  MEM[(long int *)_11] =3D _12;
  _5 =3D MEM[(long int *)p4_2(D)];
  return _5;=