*** old/src/share/vm/opto/runtime.cpp	Thu Sep 22 14:54:13 2011
--- new/src/share/vm/opto/runtime.cpp	Thu Sep 22 14:54:13 2011

*** 100,109 ****
--- 100,110 ----
  
  
  // Compiled code entry points
  address OptoRuntime::_new_instance_Java                           = NULL;
  address OptoRuntime::_new_array_Java                              = NULL;
+ address OptoRuntime::_new_array_nozero_Java                       = NULL;
  address OptoRuntime::_multianewarray2_Java                        = NULL;
  address OptoRuntime::_multianewarray3_Java                        = NULL;
  address OptoRuntime::_multianewarray4_Java                        = NULL;
  address OptoRuntime::_multianewarray5_Java                        = NULL;
  address OptoRuntime::_multianewarrayN_Java                        = NULL;

*** 149,158 ****
--- 150,160 ----
    //
    //   variable/name                       type-function-gen              , runtime method                  ,fncy_jp, tls,save_args,retpc
    // -------------------------------------------------------------------------------------------------------------------------------
    gen(env, _new_instance_Java              , new_instance_Type            , new_instance_C                  ,    0 , true , false, false);
    gen(env, _new_array_Java                 , new_array_Type               , new_array_C                     ,    0 , true , false, false);
+   gen(env, _new_array_nozero_Java          , new_array_Type               , new_array_nozero_C              ,    0 , true , false, false);
    gen(env, _multianewarray2_Java           , multianewarray2_Type         , multianewarray2_C               ,    0 , true , false, false);
    gen(env, _multianewarray3_Java           , multianewarray3_Type         , multianewarray3_C               ,    0 , true , false, false);
    gen(env, _multianewarray4_Java           , multianewarray4_Type         , multianewarray4_C               ,    0 , true , false, false);
    gen(env, _multianewarray5_Java           , multianewarray5_Type         , multianewarray5_C               ,    0 , true , false, false);
    gen(env, _multianewarrayN_Java           , multianewarrayN_Type         , multianewarrayN_C               ,    0 , true , false, false);

*** 293,302 ****
--- 295,334 ----
      klassOopDesc* elem_type = objArrayKlass::cast(array_type)->element_klass();
      result = oopFactory::new_objArray(elem_type, len, THREAD);
    }
  
    // Pass oops back through thread local storage.  Our apparent type to Java
+   // is that we return an oop, but we can block on exit from this routine and
+   // a GC can trash the oop in C's return register.  The generated stub will
+   // fetch the oop from TLS after any possible GC.
+   deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
+   thread->set_vm_result(result);
+   JRT_BLOCK_END;
+ 
+   if (GraphKit::use_ReduceInitialCardMarks()) {
+     // inform GC that we won't do card marks for initializing writes.
+     new_store_pre_barrier(thread);
+   }
+ JRT_END
+ 
+ // array allocation without zeroing
+ JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_nozero_C(klassOopDesc* array_type, int len, JavaThread *thread))
+   JRT_BLOCK;
+ #ifndef PRODUCT
+   SharedRuntime::_new_array_ctr++;            // new array requires GC
+ #endif
+   assert(check_compiled_frame(thread), "incorrect caller");
+ 
+   // Scavenge and allocate an instance.
+   oop result;
+ 
+   assert(Klass::cast(array_type)->oop_is_typeArray(), "should be called only for type array");
+   // The oopFactory likes to work with the element type.
+   BasicType elem_type = typeArrayKlass::cast(array_type)->element_type();
+   result = oopFactory::new_typeArray_nozero(elem_type, len, THREAD);
+ 
+   // Pass oops back through thread local storage.  Our apparent type to Java
    // is that we return an oop, but we can block on exit from this routine and
    // a GC can trash the oop in C's return register.  The generated stub will
    // fetch the oop from TLS after any possible GC.
    deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION);
    thread->set_vm_result(result);