[Bug c++/98322] optimizes to false instead true

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98322

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Yeah, folding it to return false; is the right thing.
~a ^ b is ~(int) (a ^ b) in C++, so if a == b, it is ~0 (on two's complement
-1),
and if a != b, then it is ~1 (on two's complement -2).
1 != -1
and
0 != -2
so it is always false.