read-rtl.c (copy_rtx_for_iterators): Continue applying iterators while it has any effect.

* read-rtl.c (copy_rtx_for_iterators): Continue applying iterators
while it has any effect.

From-SVN: r199177

gcc/ChangeLog

+2013-05-22  Michael Zolotukhin  <michael.v.zolotukhin@intel.com>
+
+	* read-rtl.c (copy_rtx_for_iterators): Continue applying iterators
+	while it has any effect.
+
 2013-05-21  Easwaran Raman  <eraman@google.com>
 
 	PR tree-optimization/57322

gcc/read-rtl.c

@@ -380,7 +380,7 @@ apply_iterator_to_string (const char *string)
 static rtx
 copy_rtx_for_iterators (rtx original)
 {
-  const char *format_ptr;
+  const char *format_ptr, *p;
   int i, j;
   rtx x;
 
@@ -397,12 +397,14 @@ copy_rtx_for_iterators (rtx original)
     switch (format_ptr[i])
       {
       case 'T':
-	XTMPL (x, i) = apply_iterator_to_string (XTMPL (x, i));
+	while (XTMPL (x, i) != (p = apply_iterator_to_string (XTMPL (x, i))))
+	  XTMPL (x, i) = p;
 	break;
 
       case 'S':
       case 's':
-	XSTR (x, i) = apply_iterator_to_string (XSTR (x, i));
+	while (XSTR (x, i) != (p = apply_iterator_to_string (XSTR (x, i))))
+	  XSTR (x, i) = p;
 	break;
 
       case 'e':