[Bug tree-optimization/103399] [12 Regression] Wrong code with -O2

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103399

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Before bswap, we have:
  iftmp.0_11 = t1;
  t1.1_1 = t1;
  _2 = t1.1_1 ^ iftmp.0_11;

But after we get:
  load_dst_8 = MEM[(int *)&t1];
  _2 = (int) load_dst_8;

Which is wrong as _2 should have been 0.