diff -r b789bcaf2dd9 -r 76256d272075 src/share/vm/opto/escape.cpp
--- a/src/share/vm/opto/escape.cpp	Thu Mar 06 10:30:17 2008 -0800
+++ b/src/share/vm/opto/escape.cpp	Thu Mar 06 10:53:33 2008 -0800
@@ -601,6 +601,11 @@
       if (es != PointsToNode::NoEscape || !ptn._unique_type) {
         continue; //  can't make a unique type
       }
+      if (alloc->is_Allocate()) {
+        // Set the scalar_replaceable flag before the next check.
+        alloc->as_Allocate()->_is_scalar_replaceable = true;
+      }
+
       set_map(alloc->_idx, n);
       set_map(n->_idx, alloc);
       const TypeInstPtr *t = igvn->type(n)->isa_instptr();