src/hotspot/share/opto/vectornode.cpp

*** 1017,1028 ****
--- 1017,1030 ----
  #endif // PRODUCT
  
  Node* VectorUnboxNode::Identity(PhaseGVN *phase) {
    Node* n = obj()->uncast();
    if (n->Opcode() == Op_VectorBox) {
+     if (Type::cmp(bottom_type(), n->in(VectorBoxNode::Value)->bottom_type()) == 0) {
        return n->in(VectorBoxNode::Value);
      }
+   }
    return this;
  }
  
  Node* VectorReinterpretNode::Identity(PhaseGVN *phase) {
    Node* n = in(1);