PR middle-end/68221

	PR middle-end/68221
	* omp-low.c (lower_rec_input_clauses): If C/C++ array reduction
	has non-zero bias, subtract it in integer type instead of
	pointer plus of negated bias.

	* testsuite/libgomp.c/reduction-11.c: Remove xfail.
	* testsuite/libgomp.c/reduction-12.c: Likewise.
	* testsuite/libgomp.c++/reduction-11.C: Likewise.
	* testsuite/libgomp.c++/reduction-12.C: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@230672 138bc75d-0d04-0410-961f-82ee72b054a4