src/share/vm/opto/escape.cpp

*** 2300,2321 ****
    //       |
    //      DecodeN
    //       | |
    //       AddP  ( base == address )
    //
    Node *base = addp->in(AddPNode::Base);
!   if (base->uncast()->is_top()) { // The AddP case #3 and #6.
      base = addp->in(AddPNode::Address);
      while (base->is_AddP()) {
        // Case #6 (unsafe access) may have several chained AddP nodes.
        assert(base->in(AddPNode::Base)->uncast()->is_top(), "expected unsafe access address only");
        base = base->in(AddPNode::Address);
      }
      if (base->Opcode() == Op_CheckCastPP &&
          base->bottom_type()->isa_rawptr() &&
          _igvn->type(base->in(1))->isa_oopptr()) {
!       base = base->in(1);
      } else {
        Node* uncast_base = base->uncast();
        int opcode = uncast_base->Opcode();
        assert(opcode == Op_ConP || opcode == Op_ThreadLocal ||
               opcode == Op_CastX2P || uncast_base->is_DecodeNarrowPtr() ||
--- 2300,2329 ----
    //       |
    //      DecodeN
    //       | |
    //       AddP  ( base == address )
    //
+   // case #9. Mixed unsafe access
+   //    {instance}
+   //        |
+   //      CheckCastPP (raw)
+   //  top   |
+   //     \  |
+   //     AddP  ( base == top )
+   //
    Node *base = addp->in(AddPNode::Base);
!   if (base->uncast()->is_top()) { // The AddP case #3, #6, and #9.
      base = addp->in(AddPNode::Address);
      while (base->is_AddP()) {
        // Case #6 (unsafe access) may have several chained AddP nodes.
        assert(base->in(AddPNode::Base)->uncast()->is_top(), "expected unsafe access address only");
        base = base->in(AddPNode::Address);
      }
      if (base->Opcode() == Op_CheckCastPP &&
          base->bottom_type()->isa_rawptr() &&
          _igvn->type(base->in(1))->isa_oopptr()) {
!       base = base->in(1); // Case #9
      } else {
        Node* uncast_base = base->uncast();
        int opcode = uncast_base->Opcode();
        assert(opcode == Op_ConP || opcode == Op_ThreadLocal ||
               opcode == Op_CastX2P || uncast_base->is_DecodeNarrowPtr() ||