graphite-scop-detection.c (scop_detection::can_represent_loop): Do not iterate…

graphite-scop-detection.c (scop_detection::can_represent_loop): Do not iterate to sibling loops but only to siblings of inner loops.

2017-09-19  Richard Biener  <rguenther@suse.de>

	* graphite-scop-detection.c (scop_detection::can_represent_loop):
	Do not iterate to sibling loops but only to siblings of inner
	loops.

From-SVN: r252962

gcc/ChangeLog

+2017-09-19  Richard Biener  <rguenther@suse.de>
+
+	* graphite-scop-detection.c (scop_detection::can_represent_loop):
+	Do not iterate to sibling loops but only to siblings of inner
+	loops.
+
 2017-09-18  Andreas Schwab  <schwab@linux-m68k.org>
 
 	PR target/81613

gcc/graphite-scop-detection.c

@@ -975,11 +975,9 @@ scop_detection::can_represent_loop (loop_p loop, sese_l scop)
 {
   if (!can_represent_loop_1 (loop, scop))
     return false;
-  if (loop->inner && !can_represent_loop (loop->inner, scop))
-    return false;
-  if (loop->next && !can_represent_loop (loop->next, scop))
-    return false;
-
+  for (loop_p inner = loop->inner; inner; inner = inner->next)
+    if (!can_represent_loop (inner, scop))
+      return false;
   return true;
 }