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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/114246] [11/12/13/14 Regression] ICE:
 verify_gimple failed: invalid argument to gimple call with __builtin_memcpy()
Date: Wed, 06 Mar 2024 06:39:35 +0000
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X-Bugzilla-Component: tree-optimization
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X-Bugzilla-Keywords: ice-on-valid-code
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114246

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2024-03-06
     Ever confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed. we start out with:
```
  __builtin_memcpy (&a, &MEM <int> [(void *)&b + -1B], 2);
  _4 =3D MEM[(char * {ref-all})&b];
  MEM[(char * {ref-all})&a] =3D _4;
```

And DSE converts it into:
```
  __builtin_memcpy (&MEM <char> [(void *)&a + 1B], (char *) &b, 1);
  _4 =3D MEM[(char * {ref-all})&b];
  MEM[(char * {ref-all})&a] =3D _4;
```=