src/hotspot/share/opto/subnode.cpp

*** 832,844 ****
  //=============================================================================
  //------------------------------sub--------------------------------------------
  // Simplify an CmpP (compare 2 pointers) node, based on local information.
  // If both inputs are constants, compare them.
  const Type *CmpPNode::sub( const Type *t1, const Type *t2 ) const {
!   if (t1->isa_valuetype() || t2->isa_valuetype() ||
        ((t1->is_valuetypeptr() || t2->is_valuetypeptr()) &&
!       (!t1->maybe_null() || !t2->maybe_null()))) {
      // One operand is a value type and one operand is never null, fold to constant false
      return TypeInt::CC_GT;
    }
  
    const TypePtr *r0 = t1->is_ptr(); // Handy access
--- 832,845 ----
  //=============================================================================
  //------------------------------sub--------------------------------------------
  // Simplify an CmpP (compare 2 pointers) node, based on local information.
  // If both inputs are constants, compare them.
  const Type *CmpPNode::sub( const Type *t1, const Type *t2 ) const {
!   if (ACmpOnValues != 3 &&
!       (t1->isa_valuetype() || t2->isa_valuetype() ||
         ((t1->is_valuetypeptr() || t2->is_valuetypeptr()) &&
!         (!t1->maybe_null() || !t2->maybe_null())))) {
      // One operand is a value type and one operand is never null, fold to constant false
      return TypeInt::CC_GT;
    }
  
    const TypePtr *r0 = t1->is_ptr(); // Handy access
*** 1104,1114 ****
      Node* base = addP->in(AddPNode::Base);
      if (base->is_top()) {
        // RawPtr comparison
        return NULL;
      }
!     assert(EnableValhalla && UsePointerPerturbation, "unexpected perturbed oop");
      return in(1);
    }
    return NULL;
  }
  
--- 1105,1115 ----
      Node* base = addP->in(AddPNode::Base);
      if (base->is_top()) {
        // RawPtr comparison
        return NULL;
      }
!     assert(EnableValhalla && ACmpOnValues == 1, "unexpected perturbed oop");
      return in(1);
    }
    return NULL;
  }