src/share/vm/opto/parse1.cpp

*** 395,404 ****
--- 395,405 ----
    _wrote_final = false;
    _wrote_volatile = false;
    _wrote_stable = false;
    _wrote_fields = false;
    _alloc_with_final = NULL;
+   _alloc_with_stable = NodeSentinel;
    _entry_bci = InvocationEntryBci;
    _tf = NULL;
    _block = NULL;
    _first_return = true;
    _replaced_nodes_for_exceptions = false;
*** 955,965 ****
    //
    if (method()->is_initializer() &&
          (wrote_final() ||
             PPC64_ONLY(wrote_volatile() ||)
             (AlwaysSafeConstructors && wrote_fields()))) {
!     _exits.insert_mem_bar(Op_MemBarRelease, alloc_with_final());
  #ifndef PRODUCT
      if (PrintOpto && (Verbose || WizardMode)) {
        method()->print_name();
        tty->print_cr(" writes finals and needs a memory barrier");
      }
--- 956,975 ----
    //
    if (method()->is_initializer() &&
          (wrote_final() ||
             PPC64_ONLY(wrote_volatile() ||)
             (AlwaysSafeConstructors && wrote_fields()))) {
!     // For PPC64 worte volatile, if using allocation node as Precedent input
!     // in MemBarRelease node and allocation is not escaped, MemBarRelease will
!     // be removed. As written volatile field is not definitly allocation
!     // instance's field (different with final), can't safely remove MemBar
!     // when allocation is not escape.
!     Node *allocate = alloc_with_final();
!     if (PPC64_ONLY(wrote_volatile()) NOT_PPC(false)) {
!         allocate = NULL;
!     }
!     _exits.insert_mem_bar(Op_MemBarRelease, allocate);
  #ifndef PRODUCT
      if (PrintOpto && (Verbose || WizardMode)) {
        method()->print_name();
        tty->print_cr(" writes finals and needs a memory barrier");
      }
*** 968,978 ****
  
    // Any method can write a @Stable field; insert memory barriers after
    // those also. If there is a predecessor allocation node, bind the
    // barrier there.
    if (wrote_stable()) {
!     _exits.insert_mem_bar(Op_MemBarRelease, alloc_with_final());
  #ifndef PRODUCT
      if (PrintOpto && (Verbose || WizardMode)) {
        method()->print_name();
        tty->print_cr(" writes @Stable and needs a memory barrier");
      }
--- 978,988 ----
  
    // Any method can write a @Stable field; insert memory barriers after
    // those also. If there is a predecessor allocation node, bind the
    // barrier there.
    if (wrote_stable()) {
!     _exits.insert_mem_bar(Op_MemBarRelease, alloc_with_stable());
  #ifndef PRODUCT
      if (PrintOpto && (Verbose || WizardMode)) {
        method()->print_name();
        tty->print_cr(" writes @Stable and needs a memory barrier");
      }