src/hotspot/share/jvmci/jvmciRuntime.cpp

RFE_8195103_reduce_initial_card_marks

*** 114,127 ****
    ik->initialize(CHECK);
    // allocate instance and return via TLS
    oop obj = ik->allocate_instance(CHECK);
    thread->set_vm_result(obj);
    JRT_BLOCK_END;
! 
!   if (ReduceInitialCardMarks) {
!     new_store_pre_barrier(thread);
!   }
  JRT_END
  
  JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_array(JavaThread* thread, Klass* array_klass, jint length))
    JRT_BLOCK;
    // Note: no handle for klass needed since they are not used
--- 114,124 ----
    ik->initialize(CHECK);
    // allocate instance and return via TLS
    oop obj = ik->allocate_instance(CHECK);
    thread->set_vm_result(obj);
    JRT_BLOCK_END;
!   SharedRuntime::on_slowpath_allocation_exit(thread);
  JRT_END
  
  JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_array(JavaThread* thread, Klass* array_klass, jint length))
    JRT_BLOCK;
    // Note: no handle for klass needed since they are not used
***************
*** 149,181 ****
      } else {
        deopt_caller();
      }
    }
    JRT_BLOCK_END;
! 
!   if (ReduceInitialCardMarks) {
!     new_store_pre_barrier(thread);
!   }
  JRT_END
  
- void JVMCIRuntime::new_store_pre_barrier(JavaThread* thread) {
-   // After any safepoint, just before going back to compiled code,
-   // we inform the GC that we will be doing initializing writes to
-   // this object in the future without emitting card-marks, so
-   // GC may take any compensating steps.
-   // NOTE: Keep this code consistent with GraphKit::store_barrier.
- 
-   oop new_obj = thread->vm_result();
-   if (new_obj == NULL)  return;
- 
-   assert(Universe::heap()->can_elide_tlab_store_barriers(),
-          "compiler must check this first");
-   // GC may decide to give back a safer copy of new_obj.
-   new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj);
-   thread->set_vm_result(new_obj);
- }
- 
  JRT_ENTRY(void, JVMCIRuntime::new_multi_array(JavaThread* thread, Klass* klass, int rank, jint* dims))
    assert(klass->is_klass(), "not a class");
    assert(rank >= 1, "rank must be nonzero");
    Handle holder(THREAD, klass->klass_holder()); // keep the klass alive
    oop obj = ArrayKlass::cast(klass)->multi_allocate(rank, dims, CHECK);
--- 146,158 ----
      } else {
        deopt_caller();
      }
    }
    JRT_BLOCK_END;
!   SharedRuntime::on_slowpath_allocation_exit(thread);
  JRT_END
  
  JRT_ENTRY(void, JVMCIRuntime::new_multi_array(JavaThread* thread, Klass* klass, int rank, jint* dims))
    assert(klass->is_klass(), "not a class");
    assert(rank >= 1, "rank must be nonzero");
    Handle holder(THREAD, klass->klass_holder()); // keep the klass alive
    oop obj = ArrayKlass::cast(klass)->multi_allocate(rank, dims, CHECK);