[Bug tree-optimization/118954] [15 regression] Miscompile at -O3

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118954

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
DSE4 shows:
```
  Deleted dead store: g[1] = 8;

  Deleted dead store: g[0] = 5;

```

But as I mentioned the problem is in pcom which is forming an invalid pointer
in the first place.