[Bug target/113838] regression of redundant load operation introduced by -fno-tree-forwprop introduce

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113838

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86_64
          Component|tree-optimization           |target
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The difference from the gimple level IR:
```
  _14 = g_26[5][3][0];
  _15 = (int) _14;
  _16 = _13 ^ _15;
  g_51 = _16;
  if (_13 != _15)
```

vs:
```
  _14 = g_26[5][3][0];
  _15 = (int) _14;
  _16 = _13 ^ _15;
  g_51 = _16;
  if (_16 != 0)
    goto <bb 4>; [50.00%]
  else
    goto <bb 3>; [50.00%]
```


This is expected behavior even for the x86_64 target