[Bug target/110206] [14 Regression] wrong code with -Os -march=cascadelake

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110206

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
There is a difference at the gimple level even:
trunk:
  _3 = { 204, 204, 204, 204 } >> u_7(D);

GCC 13.1:
  _15 = BIT_FIELD_REF <u_7(D), 8, 0>;
  _16 = 204 >> _15;
  _17 = BIT_FIELD_REF <u_7(D), 8, 8>;
  _18 = 204 >> _17;
  _19 = BIT_FIELD_REF <u_7(D), 8, 16>;
  _20 = 204 >> _19;
  _21 = BIT_FIELD_REF <u_7(D), 8, 24>;
  _22 = 204 >> _21;
  _3 = {_16, _18, _20, _22};