Use gomp_map_val for OpenACC host-to-device address translation

	libgomp/
	* libgomp.h (gomp_map_val): Add prototype.
	* oacc-parallel.c (GOACC_parallel_keyed): Use gomp_map_val instead of
	open-coding device-address calculation.
	* target.c (gomp_map_val): Make global. Use OFFSET_POINTER in
	non-present case.

Co-Authored-By: Cesar Philippidis <cesar@codesourcery.com>

From-SVN: r279622

libgomp/ChangeLog

 2019-12-19  Julian Brown  <julian@codesourcery.com>
+	    Cesar Philippidis  <cesar@codesourcery.com>
+
+	* libgomp.h (gomp_map_val): Add prototype.
+	* oacc-parallel.c (GOACC_parallel_keyed): Use gomp_map_val instead of
+	open-coding device-address calculation.
+	* target.c (gomp_map_val): Make global. Use OFFSET_POINTER in
+	non-present case.
+
+2019-12-19  Julian Brown  <julian@codesourcery.com>
 
 	* libgomp.h (struct splay_tree_key_s): Substitute dynamic_refcount
 	field for virtual_refcount.

libgomp/libgomp.h

@@ -1157,6 +1157,7 @@ extern void gomp_copy_host2dev (struct gomp_device_descr *,
 extern void gomp_copy_dev2host (struct gomp_device_descr *,
 				struct goacc_asyncqueue *, void *, const void *,
 				size_t);
+extern uintptr_t gomp_map_val (struct target_mem_desc *, void **, size_t);
 
 extern struct target_mem_desc *gomp_map_vars (struct gomp_device_descr *,
 					      size_t, void **, void **,

libgomp/oacc-parallel.c

@@ -303,12 +303,8 @@ GOACC_parallel_keyed (int flags_m, void (*fn) (void *),
   
   devaddrs = gomp_alloca (sizeof (void *) * mapnum);
   for (i = 0; i < mapnum; i++)
-    if (tgt->list[i].key != NULL)
-      devaddrs[i] = (void *) (tgt->list[i].key->tgt->tgt_start
-			      + tgt->list[i].key->tgt_offset
-			      + tgt->list[i].offset);
-    else
-      devaddrs[i] = NULL;
+    devaddrs[i] = (void *) gomp_map_val (tgt, hostaddrs, i);
+
   if (aq == NULL)
     acc_dev->openacc.exec_func (tgt_fn, mapnum, hostaddrs, devaddrs, dims,
 				tgt);

libgomp/target.c

@@ -493,7 +493,7 @@ gomp_map_fields_existing (struct target_mem_desc *tgt,
 	      (void *) cur_node.host_end);
 }
 
-static inline uintptr_t
+attribute_hidden uintptr_t
 gomp_map_val (struct target_mem_desc *tgt, void **hostaddrs, size_t i)
 {
   if (tgt->list[i].key != NULL)
@@ -713,7 +713,7 @@ gomp_map_vars_internal (struct gomp_device_descr *devicep,
 	    {
 	      /* Not present, hence, skip entry - including its MAP_POINTER,
 		 when existing.  */
-	      tgt->list[i].offset = 0;
+	      tgt->list[i].offset = OFFSET_POINTER;
 	      if (i + 1 < mapnum
 		  && ((typemask & get_kind (short_mapkind, kinds, i + 1))
 		      == GOMP_MAP_POINTER))