diff -r a932f331ef90 -r c393f046f4c5 src/cpu/x86/vm/c1_LIRGenerator_x86.cpp
--- a/src/cpu/x86/vm/c1_LIRGenerator_x86.cpp	Tue Oct 12 02:21:06 2010 -0700
+++ b/src/cpu/x86/vm/c1_LIRGenerator_x86.cpp	Tue Oct 12 23:51:20 2010 -0700
@@ -765,7 +765,7 @@
     ShouldNotReachHere();
   }
 
-  LIR_Opr addr = new_pointer_register();
+  LIR_Opr addr = (type == objectType) ? new_register(T_OBJECT) : new_pointer_register();
   LIR_Address* a;
   if(offset.result()->is_constant()) {
     a = new LIR_Address(obj.result(),