--- a/src/share/vm/opto/output.cpp	Fri Feb 24 18:30:42 2012 -0800
+++ b/src/share/vm/opto/output.cpp	Mon Feb 27 13:10:13 2012 +0100
@@ -167,7 +167,7 @@
   // Determine if we need to generate a stack overflow check.
   // Do it if the method is not a stub function and
   // has java calls or has frame size > vm_page_size/8.
-  return (stub_function() == NULL &&
+  return (UseStackBanging && stub_function() == NULL &&
           (has_java_calls() || frame_size_in_bytes > os::vm_page_size()>>3));
 }
 
@@ -924,10 +924,10 @@
         scval = new ConstantOopWriteValue(tp->is_oopptr()->const_oop()->constant_encoding());
       }
 
-      OptoReg::Name box_reg = BoxLockNode::stack_slot(box_node);
+      OptoReg::Name box_reg = BoxLockNode::reg(box_node);
       Location basic_lock = Location::new_stk_loc(Location::normal,_regalloc->reg2offset(box_reg));
-      while( !box_node->is_BoxLock() )  box_node = box_node->in(1);
-      monarray->append(new MonitorValue(scval, basic_lock, box_node->as_BoxLock()->is_eliminated()));
+      bool eliminated = (box_node->is_BoxLock() && box_node->as_BoxLock()->is_eliminated());
+      monarray->append(new MonitorValue(scval, basic_lock, eliminated));
     }
 
     // We dump the object pool first, since deoptimization reads it in first.