re PR middle-end/60291 (slow compile times for any mode (-O0/-O1/-O2) on large…

re PR middle-end/60291 (slow compile times for any mode (-O0/-O1/-O2) on large .c source file (30MBs))

2014-02-21  Richard Biener  <rguenther@suse.de>

	PR middle-end/60291
	* tree-ssa-live.c (mark_all_vars_used_1): Do not walk
	DECL_INITIAL for globals not in the current function context.

From-SVN: r207991

gcc/ChangeLog

+2014-02-21  Richard Biener  <rguenther@suse.de>
+
+	PR middle-end/60291
+	* tree-ssa-live.c (mark_all_vars_used_1): Do not walk
+	DECL_INITIAL for globals not in the current function context.
+
 2014-02-21  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/56490

gcc/tree-ssa-live.c

@@ -435,7 +435,8 @@ mark_all_vars_used_1 (tree *tp, int *walk_subtrees, void *data ATTRIBUTE_UNUSED)
     {
       /* When a global var becomes used for the first time also walk its
          initializer (non global ones don't have any).  */
-      if (set_is_used (t) && is_global_var (t))
+      if (set_is_used (t) && is_global_var (t)
+	  && DECL_CONTEXT (t) == current_function_decl)
 	mark_all_vars_used (&DECL_INITIAL (t));
     }
   /* remove_unused_scope_block_p requires information about labels