2011-04-20  Kai Tietz  <ktietz@redhat.com>

	* fold-const.c (fold_binary_loc): Add handling for
	(X & ~Y) | (~X & Y) and (X && !Y) | (!X && Y) optimization
	to (X ^ Y).

ChangeLog gcc/testsuite

2011-04-20  Kai Tietz  <ktietz@redhat.com>

	* gcc.dg/binio-xor1.c: New test.
	* gcc.dg/binio-xor2.c: New test.
	* gcc.dg/binio-xor3.c: New test.
	* gcc.dg/binio-xor4.c: New test.
	* gcc.dg/binio-xor5.c: New test.

From-SVN: r172776