src/share/vm/opto/library_call.cpp

*** 2151,2161 ****
    // The compile time filters did not reject base_oop/offset so
    // we need to generate the following runtime filters
    //
    // if (offset == java_lang_ref_Reference::_reference_offset) {
    //   if (base != null) {
!   //     if (klass(base)->reference_type() != REF_NONE)) {
    //       pre_barrier(_, pre_val, ...);
    //     }
    //   }
    // }
  
--- 2151,2161 ----
    // The compile time filters did not reject base_oop/offset so
    // we need to generate the following runtime filters
    //
    // if (offset == java_lang_ref_Reference::_reference_offset) {
    //   if (base != null) {
!   //     if (instance_of(base, java.lang.ref.Reference)) {
    //       pre_barrier(_, pre_val, ...);
    //     }
    //   }
    // }
  
*** 2163,2174 ****
    float unlikely  = PROB_UNLIKELY(0.999);
  
    IdealKit ideal(this);
  #define __ ideal.
  
-   const int reference_type_offset = in_bytes(instanceKlass::reference_type_offset());
- 
    Node* referent_off = __ ConX(java_lang_ref_Reference::referent_offset);
  
    __ if_then(offset, BoolTest::eq, referent_off, unlikely); {
      __ if_then(base_oop, BoolTest::ne, null(), likely); {
  
--- 2163,2172 ----