Re: [PATCH] Update SSA_NAME manager to use two lists

	* tree-ssanames.c (flush_ssaname_freelist): Use splice and truncate
	rather than moving each name to the freelist individually.

From-SVN: r228668

gcc/ChangeLog

+2015-10-09  Jeff Law  <law@redhat.com>
+
+	* tree-ssanames.c (flush_ssaname_freelist): Use splice and truncate
+	rather than moving each name to the freelist individually.
+
 2015-10-09  Steve Ellcey  <sellcey@imgtec.com>
 
 	* config.gcc (mips*-*-*): Add frame-header-opt.o to extra_objs.

gcc/tree-ssanames.c

@@ -127,11 +127,8 @@ ssanames_print_statistics (void)
 void
 flush_ssaname_freelist (void)
 {
-  while (!vec_safe_is_empty (FREE_SSANAMES_QUEUE (cfun)))
-    {
-      tree t = FREE_SSANAMES_QUEUE (cfun)->pop ();
-      vec_safe_push (FREE_SSANAMES (cfun), t);
-    }
+  vec_safe_splice (FREE_SSANAMES (cfun), FREE_SSANAMES_QUEUE (cfun));
+  vec_safe_truncate (FREE_SSANAMES_QUEUE (cfun), 0);
 }
 
 /* Return an SSA_NAME node for variable VAR defined in statement STMT