1 files changed, 10 insertions, 3 deletions
diff --git a/gcc/cfgexpand.cc b/gcc/cfgexpand.cc
index 2b27076..277ef65 100644
--- a/gcc/cfgexpand.cc
+++ b/gcc/cfgexpand.cc
@@ -766,7 +766,12 @@ vars_ssa_cache::operator() (tree name)
 
       /* If the cache exists for the use, don't try to recreate it. */
       if (exists (use))
-	continue;
+	{
+	  /* Update the cache here, this can reduce the number of
+	     times through the update loop below.  */
+	  update (old_name, use);
+	  continue;
+	}
 
       /* Create the cache bitmap for the use and also
 	 so we don't go into an infinite loop for some phi nodes with loops.  */
@@ -804,9 +809,11 @@ vars_ssa_cache::operator() (tree name)
   bool changed;
   do {
     changed = false;
-    for (auto &e : update_cache_list)
+    unsigned int i;
+    std::pair<tree,tree> *e;
+    FOR_EACH_VEC_ELT_REVERSE (update_cache_list, i, e)
       {
-	if (update (e.second, e.first))
+	if (update (e->second, e->first))
 	  changed = true;
       }
   } while (changed);