src/hotspot/share/opto/graphKit.cpp

*** 1513,1532 ****
  Node* GraphKit::store_to_memory(Node* ctl, Node* adr, Node *val, BasicType bt,
                                  int adr_idx,
                                  MemNode::MemOrd mo,
                                  bool require_atomic_access,
                                  bool unaligned,
!                                 bool mismatched) {
    assert(adr_idx != Compile::AliasIdxTop, "use other store_to_memory factory" );
    const TypePtr* adr_type = NULL;
    debug_only(adr_type = C->get_adr_type(adr_idx));
    Node *mem = memory(adr_idx);
    Node* st;
    if (require_atomic_access && bt == T_LONG) {
      st = StoreLNode::make_atomic(ctl, mem, adr, adr_type, val, mo);
    } else if (require_atomic_access && bt == T_DOUBLE) {
      st = StoreDNode::make_atomic(ctl, mem, adr, adr_type, val, mo);
    } else {
      st = StoreNode::make(_gvn, ctl, mem, adr, adr_type, val, bt, mo);
    }
    if (unaligned) {
      st->as_Store()->set_unaligned_access();
--- 1513,1537 ----
  Node* GraphKit::store_to_memory(Node* ctl, Node* adr, Node *val, BasicType bt,
                                  int adr_idx,
                                  MemNode::MemOrd mo,
                                  bool require_atomic_access,
                                  bool unaligned,
!                                 bool mismatched,
!                                 int storeZ) {
    assert(adr_idx != Compile::AliasIdxTop, "use other store_to_memory factory" );
    const TypePtr* adr_type = NULL;
    debug_only(adr_type = C->get_adr_type(adr_idx));
    Node *mem = memory(adr_idx);
    Node* st;
    if (require_atomic_access && bt == T_LONG) {
      st = StoreLNode::make_atomic(ctl, mem, adr, adr_type, val, mo);
    } else if (require_atomic_access && bt == T_DOUBLE) {
      st = StoreDNode::make_atomic(ctl, mem, adr, adr_type, val, mo);
+   } else if (bt == T_BYTE && storeZ == 0) {
+     st = new StoreZ0Node(ctl, mem, adr, adr_type, val, mo);
+   } else if (bt == T_BYTE && storeZ == 1) {
+     st = new StoreZ1Node(ctl, mem, adr, adr_type, val, mo);
    } else {
      st = StoreNode::make(_gvn, ctl, mem, adr, adr_type, val, bt, mo);
    }
    if (unaligned) {
      st->as_Store()->set_unaligned_access();