[wasm] Introduce instance types for WebAssembly.* objects.

src/heap/heap.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/heap/heap.h"
 
 #include <unordered_map>
 #include <unordered_set>
 
 #include "src/accessors.h"
@@ skipping 3623 matching lines @@
   // Make the clone.
   Map* map = source->map();
 
   // We can only clone regexps, normal objects, api objects, errors or arrays.
   // Copying anything else will break invariants.
   CHECK(map->instance_type() == JS_REGEXP_TYPE ||
         map->instance_type() == JS_OBJECT_TYPE ||
         map->instance_type() == JS_ERROR_TYPE ||
         map->instance_type() == JS_ARRAY_TYPE ||
         map->instance_type() == JS_API_OBJECT_TYPE ||
+        map->instance_type() == WASM_INSTANCE_TYPE ||
+        map->instance_type() == WASM_MEMORY_TYPE ||
+        map->instance_type() == WASM_MODULE_TYPE ||
+        map->instance_type() == WASM_TABLE_TYPE ||
         map->instance_type() == JS_SPECIAL_API_OBJECT_TYPE);
 
   int object_size = map->instance_size();
   HeapObject* clone = nullptr;
 
   DCHECK(site == NULL || AllocationSite::CanTrack(map->instance_type()));
 
   int adjusted_object_size =
       site != NULL ? object_size + AllocationMemento::kSize : object_size;
   AllocationResult allocation = AllocateRaw(adjusted_object_size, NEW_SPACE);
@@ skipping 3052 matching lines @@
       return dst == src && type == CODE_TYPE;
     case MAP_SPACE:
     case LO_SPACE:
       return false;
   }
   UNREACHABLE();
 }
 
 }  // namespace internal
 }  // namespace v8