src/hotspot/share/opto/macro.cpp

*** 671,688 ****
  // Search the last value stored into the value type's fields.
  Node* PhaseMacroExpand::value_type_from_mem(Node* mem, Node* ctl, ciValueKlass* vk, const TypeAryPtr* adr_type, int offset, AllocateNode* alloc) {
    // Subtract the offset of the first field to account for the missing oop header
    offset -= vk->first_field_offset();
    // Create a new ValueTypeNode and retrieve the field values from memory
!   ValueTypeNode* vt = ValueTypeNode::make(_igvn, vk)->as_ValueType();
    for (int i = 0; i < vk->nof_declared_nonstatic_fields(); ++i) {
      ciType* field_type = vt->field_type(i);
      int field_offset = offset + vt->field_offset(i);
      // Each value type field has its own memory slice
      adr_type = adr_type->with_field_offset(field_offset);
      Node* value = NULL;
!     if (field_type->is_valuetype() && vt->field_is_flattened(i)) {
        value = value_type_from_mem(mem, ctl, field_type->as_value_klass(), adr_type, field_offset, alloc);
      } else {
        const Type* ft = Type::get_const_type(field_type);
        BasicType bt = field_type->basic_type();
        if (UseCompressedOops && !is_java_primitive(bt)) {
--- 671,688 ----
  // Search the last value stored into the value type's fields.
  Node* PhaseMacroExpand::value_type_from_mem(Node* mem, Node* ctl, ciValueKlass* vk, const TypeAryPtr* adr_type, int offset, AllocateNode* alloc) {
    // Subtract the offset of the first field to account for the missing oop header
    offset -= vk->first_field_offset();
    // Create a new ValueTypeNode and retrieve the field values from memory
!   ValueTypeNode* vt = ValueTypeNode::make_uninitialized(_igvn, vk)->as_ValueType();
    for (int i = 0; i < vk->nof_declared_nonstatic_fields(); ++i) {
      ciType* field_type = vt->field_type(i);
      int field_offset = offset + vt->field_offset(i);
      // Each value type field has its own memory slice
      adr_type = adr_type->with_field_offset(field_offset);
      Node* value = NULL;
!     if (vt->field_is_flattened(i)) {
        value = value_type_from_mem(mem, ctl, field_type->as_value_klass(), adr_type, field_offset, alloc);
      } else {
        const Type* ft = Type::get_const_type(field_type);
        BasicType bt = field_type->basic_type();
        if (UseCompressedOops && !is_java_primitive(bt)) {