OpenMP: Support complex/float in && and || reduction

C/C++ permit logical AND and logical OR also with floating-point or complex
arguments by doing an unequal zero comparison; the result is an 'int' with
value one or zero.  Hence, those are also permitted as reduction variable,
even though it is not the most sensible thing to do.

gcc/c/ChangeLog:

	* c-typeck.c (c_finish_omp_clauses): Accept float + complex
	for || and && reductions.

gcc/cp/ChangeLog:

	* semantics.c (finish_omp_reduction_clause): Accept float + complex
	for || and && reductions.

gcc/ChangeLog:

	* omp-low.c (lower_rec_input_clauses, lower_reduction_clauses): Handle
	&& and || with floating-point and complex arguments.

gcc/testsuite/ChangeLog:

	* gcc.dg/gomp/clause-1.c: Use 'reduction(&:..)' instead of '...(&&:..)'.

libgomp/ChangeLog:

	* testsuite/libgomp.c-c++-common/reduction-1.c: New test.
	* testsuite/libgomp.c-c++-common/reduction-2.c: New test.
	* testsuite/libgomp.c-c++-common/reduction-3.c: New test.

1 files changed, 2 insertions, 6 deletions

diff --git a/gcc/cp/semantics.c b/gcc/cp/semantics.c
index 6224f49..0d590c3 100644
--- a/gcc/cp/semantics.c
+++ b/gcc/cp/semantics.c
@@ -6032,6 +6032,8 @@ finish_omp_reduction_clause (tree c, bool *need_default_ctor, bool *need_dtor)
       case PLUS_EXPR:
       case MULT_EXPR:
       case MINUS_EXPR:
+      case TRUTH_ANDIF_EXPR:
+      case TRUTH_ORIF_EXPR:
 	predefined = true;
 	break;
       case MIN_EXPR:
@@ -6047,12 +6049,6 @@ finish_omp_reduction_clause (tree c, bool *need_default_ctor, bool *need_dtor)
 	  break;
 	predefined = true;
 	break;
-      case TRUTH_ANDIF_EXPR:
-      case TRUTH_ORIF_EXPR:
-	if (FLOAT_TYPE_P (type))
-	  break;
-	predefined = true;
-	break;
       default:
 	break;
       }