[openacc] Make oacc_fn_attrib_level external

Expose oacc_fn_attrib_level to be used in backends.

2018-12-19  Tom de Vries  <tdevries@suse.de>

	* omp-offload.c (oacc_fn_attrib_level): Remove static.
	* omp-offload.h (oacc_fn_attrib_level): Declare.

From-SVN: r267275

gcc/ChangeLog

 2018-12-19  Tom de Vries  <tdevries@suse.de>
 
+	* omp-offload.c (oacc_fn_attrib_level): Remove static.
+	* omp-offload.h (oacc_fn_attrib_level): Declare.
+
+2018-12-19  Tom de Vries  <tdevries@suse.de>
+
 	* omp-offload.c (oacc_get_default_dim): New function.
 	* omp-offload.h (oacc_get_default_dim): Declare.
 

gcc/omp-offload.c

@@ -88,7 +88,7 @@ vec<tree, va_gc> *offload_funcs, *offload_vars;
 /* Return level at which oacc routine may spawn a partitioned loop, or
    -1 if it is not a routine (i.e. is an offload fn).  */
 
-static int
+int
 oacc_fn_attrib_level (tree attr)
 {
   tree pos = TREE_VALUE (attr);

gcc/omp-offload.h

@@ -23,6 +23,7 @@ along with GCC; see the file COPYING3.  If not see
 #define GCC_OMP_DEVICE_H
 
 extern int oacc_get_default_dim (int dim);
+extern int oacc_fn_attrib_level (tree attr);
 
 extern GTY(()) vec<tree, va_gc> *offload_funcs;
 extern GTY(()) vec<tree, va_gc> *offload_vars;