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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/116791] [15 Regression] ICE in operator[], at
 vec.h:910
Date: Fri, 20 Sep 2024 19:59:05 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 15.0
X-Bugzilla-Keywords: ice-on-valid-code, needs-bisection
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X-Bugzilla-Who: pinskia at gcc dot gnu.org
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D116791

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2024-09-20
             Status|UNCONFIRMED                 |NEW
           Keywords|needs-reduction             |

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Reduced testcase:
```
struct nine_context {
  unsigned tex_stage[8][33];
};
struct fvec4 {
  float x[2];
};
void f(struct fvec4 *dst, struct nine_context *context) {
  unsigned s;
  for (s =3D 0; s < 8; ++s)
    {
      float *rgba =3D &dst[s].x[0];
      unsigned color =3D context->tex_stage[s][0];
      rgba[0] =3D (float)((color >> 16) & 0xFF) / 0xFF;
      rgba[1] =3D (float)((color >> 8) & 0xFF) / 0xFF;
    }
}
```=