Revert "Reland "VM: Handle null-comparisons in the flow graph type propagation""

runtime/vm/object_store.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef RUNTIME_VM_OBJECT_STORE_H_
 #define RUNTIME_VM_OBJECT_STORE_H_
 
 #include "vm/object.h"
 
 namespace dart {
@@ skipping 72 matching lines @@
 
   RawType* number_type() const { return number_type_; }
   void set_number_type(const Type& value) { number_type_ = value.raw(); }
 
   RawType* int_type() const { return int_type_; }
   void set_int_type(const Type& value) { int_type_ = value.raw(); }
   static intptr_t int_type_offset() {
     return OFFSET_OF(ObjectStore, int_type_);
   }
 
-  RawType* int64_type() const { return int64_type_; }
-  void set_int64_type(const Type& value) { int64_type_ = value.raw(); }
-
   RawClass* integer_implementation_class() const {
     return integer_implementation_class_;
   }
   void set_integer_implementation_class(const Class& value) {
     integer_implementation_class_ = value.raw();
   }
 
   RawClass* smi_class() const { return smi_class_; }
   void set_smi_class(const Class& value) { smi_class_ = value.raw(); }
 
@@ skipping 401 matching lines @@
 #define OBJECT_STORE_FIELD_LIST(V)                                             \
   V(RawClass*, object_class_)                                                  \
   V(RawType*, object_type_)                                                    \
   V(RawClass*, null_class_)                                                    \
   V(RawType*, null_type_)                                                      \
   V(RawType*, function_type_)                                                  \
   V(RawClass*, closure_class_)                                                 \
   V(RawType*, number_type_)                                                    \
   V(RawType*, int_type_)                                                       \
   V(RawClass*, integer_implementation_class_)                                  \
-  V(RawType*, int64_type_)                                                     \
   V(RawClass*, smi_class_)                                                     \
   V(RawType*, smi_type_)                                                       \
   V(RawClass*, mint_class_)                                                    \
   V(RawType*, mint_type_)                                                      \
   V(RawClass*, bigint_class_)                                                  \
   V(RawClass*, double_class_)                                                  \
   V(RawType*, double_type_)                                                    \
   V(RawType*, float32x4_type_)                                                 \
   V(RawType*, int32x4_type_)                                                   \
   V(RawType*, float64x2_type_)                                                 \
@@ skipping 96 matching lines @@
 
   friend class Serializer;
   friend class Deserializer;
 
   DISALLOW_COPY_AND_ASSIGN(ObjectStore);
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_OBJECT_STORE_H_