[Bug middle-end/23673] fold does not fold (a^b) != 0 to a != b

[pinskia at gcc dot gnu dot org]

------- Comment #4 from pinskia at gcc dot gnu dot org  2005-12-02 18:12 -------
ok, I have a fix without rewritting some of fold_binary.  I just needed to
added a check for BIT_XOR_EXPR comming back, like invert_expr does.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23673