re PR middle-end/68221 (libgomp reduction-11/12 failures)

	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.

From-SVN: r230672

gcc/ChangeLog

 2015-11-20  Jakub Jelinek  <jakub@redhat.com>
 
+	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.
+
 	PR middle-end/68339
 	* omp-low.c (expand_simd_clones): Call node->get_body () before
 	allocating stuff in GC.

gcc/omp-low.c

@@ -4444,11 +4444,13 @@ lower_rec_input_clauses (tree clauses, gimple_seq *ilist, gimple_seq *dlist,
 
 	      if (!integer_zerop (bias))
 		{
-		  bias = fold_convert_loc (clause_loc, sizetype, bias);
-		  bias = fold_build1_loc (clause_loc, NEGATE_EXPR,
-					  sizetype, bias);
-		  x = fold_build2_loc (clause_loc, POINTER_PLUS_EXPR,
-				       TREE_TYPE (x), x, bias);
+		  bias = fold_convert_loc (clause_loc, pointer_sized_int_node,
+					   bias);
+		  yb = fold_convert_loc (clause_loc, pointer_sized_int_node,
+					 x);
+		  yb = fold_build2_loc (clause_loc, MINUS_EXPR,
+					pointer_sized_int_node, yb, bias);
+		  x = fold_convert_loc (clause_loc, TREE_TYPE (x), yb);
 		  yb = create_tmp_var (ptype, name);
 		  gimplify_assign (yb, x, ilist);
 		  x = yb;

libgomp/ChangeLog

+2015-11-20  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/68221
+	* 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.
+
 2015-11-19  Nathan Sidwell  <nathan@codesourcery.com>
 
 	* libgomp.oacc-c-c++-common/reduction-dbl.c: New.

libgomp/testsuite/libgomp.c++/reduction-11.C

-// { dg-do run { xfail *-*-* } }
+// { dg-do run }
 
 char z[10] = { 0 };
 

libgomp/testsuite/libgomp.c++/reduction-12.C

-// { dg-do run { xfail *-*-* } }
+// { dg-do run }
 
 template <typename T>
 struct A

libgomp/testsuite/libgomp.c/reduction-11.c

-/* { dg-do run { xfail *-*-* } } */
+/* { dg-do run } */
 
 char z[10] = { 0 };
 

libgomp/testsuite/libgomp.c/reduction-12.c

-/* { dg-do run { xfail *-*-* } } */
+/* { dg-do run } */
 
 struct A { int t; };
 struct B { char t; };