--- a/hotspot/src/share/vm/opto/macro.cpp	Fri Jul 18 09:04:01 2014 +0200
+++ b/hotspot/src/share/vm/opto/macro.cpp	Fri Jul 25 10:06:17 2014 +0200
@@ -855,6 +855,7 @@
     int start = jvms->debug_start();
     int end   = jvms->debug_end();
     sfpt->replace_edges_in_range(res, sobj, start, end);
+    _igvn._worklist.push(sfpt);
     safepoints_done.append_if_missing(sfpt); // keep it for rollback
   }
   return true;
@@ -1775,6 +1776,7 @@
       Node *pf_region = new RegionNode(3);
       Node *pf_phi_rawmem = new PhiNode( pf_region, Type::MEMORY,
                                              TypeRawPtr::BOTTOM );
+      transform_later(pf_region);
 
       // Generate several prefetch instructions.
       uint lines = (length != NULL) ? AllocatePrefetchLines : AllocateInstancePrefetchLines;