revert: nvptx: do not implicitly enable -ftoplevel-reorder

Revert
2016-07-20  Alexander Monakov  <amonakov@ispras.ru>

* config/nvptx/nvptx.c (nvptx_option_override): Do not set
flag_toplevel_reorder.

From-SVN: r238710

gcc/ChangeLog

+2016-07-25  Alexander Monakov  <amonakov@ispras.ru>
+
+	Revert
+	2016-07-20  Alexander Monakov  <amonakov@ispras.ru>
+
+	* config/nvptx/nvptx.c (nvptx_option_override): Do not set
+	flag_toplevel_reorder.
+
 2016-07-25  Richard Biener  <rguenther@suse.de>
 
 	* cgraph.c (cgraph_node::verify_node): Compare against builtin

gcc/config/nvptx/nvptx.c

@@ -156,6 +156,12 @@ nvptx_option_override (void)
 {
   init_machine_status = nvptx_init_machine_status;
 
+  /* Set toplevel_reorder, unless explicitly disabled.  We need
+     reordering so that we emit necessary assembler decls of
+     undeclared variables. */
+  if (!global_options_set.x_flag_toplevel_reorder)
+    flag_toplevel_reorder = 1;
+
   /* Set flag_no_common, unless explicitly disabled.  We fake common
      using .weak, and that's not entirely accurate, so avoid it
      unless forced.  */