[Bug tree-optimization/115508] [14/15 regression] ICE when building flac with -O2 -march=znver1

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115508

--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
  _19 = BIT_FIELD_REF <vec_var.1_14, 64, 0>;
  _12 = BIT_FIELD_REF <vec_var.1_14, 64, 64>;
  _15 = _12 | _19;

vs
  _13 = BIT_FIELD_REF <vec_var.1_12, 64, 0>;
  _14 = BIT_FIELD_REF <vec_var.1_12, 64, 64>;
  _15 = _13 | _14;

So basically it is just by accident the order happens that way which is why the
reducing it further removing the stuff afterwards does not make any difference
...