Match: Improve inverted_equal_p for bool and `^` and `==` [PR113186]

For boolean types, `a ^ b` is a valid form for `a != b`. This means for
gimple_bitwise_inverted_equal_p, we catch some inverted value forms. This
patch extends inverted_equal_p to allow matching of `^` with the
corresponding `==`. Note in the testcase provided we used to optimize
in GCC 12 to just `return 0` where `a == b` was used,
this allows us to do that again.

Bootstrapped and tested on x86_64-linux-gnu with no regressions.

	PR tree-optimization/113186

gcc/ChangeLog:

	* gimple-match-head.cc (gimple_bitwise_inverted_equal_p):
	Match `^` with the `==` for 1bit integral types.
	* match.pd (maybe_cmp): Allow for bit_xor for 1bit
	integral types.

gcc/testsuite/ChangeLog:

	* gcc.dg/tree-ssa/bitops-bool-1.c: New test.

Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>