* sched-int.h (sd_iterator_cond): Manually tail recurse.

From-SVN: r210895

gcc/ChangeLog

+2014-05-23  Jan Hubicka  <hubicka@ucw.cz>
+
+	* sched-int.h (sd_iterator_cond): Manually tail recurse.
+
 2014-05-23  Segher Boessenkool  <segher@kernel.crashing.org>
 
 	* config/rs6000/440.md (ppc440-integer): Include shift without

gcc/sched-int.h

@@ -1550,34 +1550,37 @@ sd_iterator_start (rtx insn, sd_list_types_def types)
 static inline bool
 sd_iterator_cond (sd_iterator_def *it_ptr, dep_t *dep_ptr)
 {
-  dep_link_t link = *it_ptr->linkp;
-
-  if (link != NULL)
-    {
-      *dep_ptr = DEP_LINK_DEP (link);
-      return true;
-    }
-  else
+  while (true)
     {
-      sd_list_types_def types = it_ptr->types;
+      dep_link_t link = *it_ptr->linkp;
 
-      if (types != SD_LIST_NONE)
-	/* Switch to next list.  */
+      if (link != NULL)
+	{
+	  *dep_ptr = DEP_LINK_DEP (link);
+	  return true;
+	}
+      else
 	{
-	  deps_list_t list;
+	  sd_list_types_def types = it_ptr->types;
 
-	  sd_next_list (it_ptr->insn,
-			&it_ptr->types, &list, &it_ptr->resolved_p);
+	  if (types != SD_LIST_NONE)
+	    /* Switch to next list.  */
+	    {
+	      deps_list_t list;
 
-	  it_ptr->linkp = &DEPS_LIST_FIRST (list);
+	      sd_next_list (it_ptr->insn,
+			    &it_ptr->types, &list, &it_ptr->resolved_p);
 
-	  if (list)
-	    return sd_iterator_cond (it_ptr, dep_ptr);
-	}
+	      it_ptr->linkp = &DEPS_LIST_FIRST (list);
+
+	      if (list)
+		continue;
+	    }
 
-      *dep_ptr = NULL;
-      return false;
-    }
+	  *dep_ptr = NULL;
+	  return false;
+	}
+   }
 }
 
 /* Advance iterator.  */