[Bug tree-optimization/110539] [14 Regression] Dead Code Elimination Regression at since r14-338-g1dd154f6407

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110539

--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
yes adding:
/* (convert)(zeroone != 0) into (convert)zeroone */
/* (convert)(zeroone == 0) into ((convert)zeroone)^1 */
(for neeq (ne eq)
 (simplify
  (convert (neeq zero_one_valued_p@0 integer_zerop))
  (if (neeq == NE_EXPR)
   (convert @0)
   (bit_xor (convert @0) { build_one_cst (type); } ))))


Fixes the original testcase.