--- a/hotspot/src/share/vm/opto/chaitin.cpp	Mon Jan 19 14:14:05 2015 +0000
+++ b/hotspot/src/share/vm/opto/chaitin.cpp	Mon Jan 19 12:29:50 2015 -0800
@@ -582,6 +582,9 @@
   // Peephole remove copies
   post_allocate_copy_removal();
 
+  // Merge multidefs if multiple defs representing the same value are used in a single block.
+  merge_multidefs();
+
 #ifdef ASSERT
   // Veify the graph after RA.
   verify(&live_arena);