[Bug tree-optimization/98908] [11 Regression] arithmetic involving struct members into operating on the entire struct fails at -O3

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98908

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |11.2.0
      Known to work|                            |10.3.0, 12.0

--- Comment #11 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
How this was fixed on the trunk was SLP is now able to do:
  _8 = {_1, _3};
  vect__2.4_9 = _8 & { 254, 128 };
Where it only did the store SLP and not the & before.

SLP does it because we know vect-lowering will change it to:
  _7 = VIEW_CONVERT_EXPR<short unsigned int>(_8);
  _6 = _7 & 33022;
  _11 = VIEW_CONVERT_EXPR<vector(2) unsigned char>(_6);

Next time when you file a bug please add what options you are using.