src/hotspot/share/opto/library_call.cpp

rev 51594 : 8210187: Explicit barriers for C2
Reviewed-by: eosterlund, shade
rev 51595 : [mq]: JDK-8210187-01.patch

*** 2965,2976 ****
  
    // (a) Receiving thread must be the current thread.
    Node* rec_thr = argument(0);
    Node* tls_ptr = NULL;
    Node* cur_thr = generate_current_thread(tls_ptr);
-   cur_thr = access_resolve(cur_thr, ACCESS_WRITE);
-   rec_thr = access_resolve(rec_thr, ACCESS_WRITE);
    Node* cmp_thr = _gvn.transform(new CmpPNode(cur_thr, rec_thr));
    Node* bol_thr = _gvn.transform(new BoolNode(cmp_thr, BoolTest::ne));
  
    generate_slow_guard(bol_thr, slow_region);
  
--- 2965,2974 ----
*** 3401,3413 ****
      Node* p = basic_plus_adr(arg, class_klass_offset);
      Node* kls = LoadKlassNode::make(_gvn, NULL, immutable_memory(), p, adr_type, kls_type);
      klasses[which_arg] = _gvn.transform(kls);
    }
  
-   args[0] = access_resolve(args[0], ACCESS_WRITE);
-   args[1] = access_resolve(args[1], ACCESS_WRITE);
- 
    // Having loaded both klasses, test each for null.
    bool never_see_null = !too_many_traps(Deoptimization::Reason_null_check);
    for (which_arg = 0; which_arg <= 1; which_arg++) {
      Node* kls = klasses[which_arg];
      Node* null_ctl = top();
--- 3399,3408 ----
*** 6120,6132 ****
    }
  
    src = must_be_not_null(src, true);
    dest = must_be_not_null(dest, true);
  
-   src = access_resolve(src, ACCESS_WRITE);
-   dest = access_resolve(dest, ACCESS_WRITE);
- 
    ciInstanceKlass* instklass_AESCrypt = klass_AESCrypt->as_instance_klass();
  
    Node* instof = gen_instanceof(embeddedCipherObj, makecon(TypeKlassPtr::make(instklass_AESCrypt)));
    Node* cmp_instof  = _gvn.transform(new CmpINode(instof, intcon(1)));
    Node* bool_instof  = _gvn.transform(new BoolNode(cmp_instof, BoolTest::ne));
--- 6115,6124 ----