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

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index 0781949a3c2320fc9eca93c3920cc313ca7dfa54..77d9ef585d938767e406eb633f5164f3374bf337 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -106,6 +106,10 @@ TYPE_CHECKER(JSTypedArray, JS_TYPED_ARRAY_TYPE)
 TYPE_CHECKER(JSValue, JS_VALUE_TYPE)
 TYPE_CHECKER(JSWeakMap, JS_WEAK_MAP_TYPE)
 TYPE_CHECKER(JSWeakSet, JS_WEAK_SET_TYPE)
+TYPE_CHECKER(WasmInstanceObject, WASM_INSTANCE_TYPE)
+TYPE_CHECKER(WasmMemoryObject, WASM_MEMORY_TYPE)
+TYPE_CHECKER(WasmModuleObject, WASM_MODULE_TYPE)
+TYPE_CHECKER(WasmTableObject, WASM_TABLE_TYPE)
 TYPE_CHECKER(Map, MAP_TYPE)
 TYPE_CHECKER(MutableHeapNumber, MUTABLE_HEAP_NUMBER_TYPE)
 TYPE_CHECKER(Oddball, ODDBALL_TYPE)
@@ -1476,79 +1480,12 @@ void WeakCell::clear_next(Object* the_hole_value) {
 
 bool WeakCell::next_cleared() { return next()->IsTheHole(GetIsolate()); }
 
-int JSObject::GetHeaderSize() { return GetHeaderSize(map()->instance_type()); }
-
-
-int JSObject::GetHeaderSize(InstanceType type) {
+int JSObject::GetHeaderSize() {
   // Check for the most common kind of JavaScript object before
   // falling into the generic switch. This speeds up the internal
   // field operations considerably on average.
-  if (type == JS_OBJECT_TYPE) return JSObject::kHeaderSize;
-  switch (type) {
-    case JS_API_OBJECT_TYPE:
-    case JS_SPECIAL_API_OBJECT_TYPE:
-      return JSObject::kHeaderSize;
-    case JS_GENERATOR_OBJECT_TYPE:
-      return JSGeneratorObject::kSize;
-    case JS_ASYNC_GENERATOR_OBJECT_TYPE:
-      return JSAsyncGeneratorObject::kSize;
-    case JS_GLOBAL_PROXY_TYPE:
-      return JSGlobalProxy::kSize;
-    case JS_GLOBAL_OBJECT_TYPE:
-      return JSGlobalObject::kSize;
-    case JS_BOUND_FUNCTION_TYPE:
-      return JSBoundFunction::kSize;
-    case JS_FUNCTION_TYPE:
-      return JSFunction::kSize;
-    case JS_VALUE_TYPE:
-      return JSValue::kSize;
-    case JS_DATE_TYPE:
-      return JSDate::kSize;
-    case JS_ARRAY_TYPE:
-      return JSArray::kSize;
-    case JS_ARRAY_BUFFER_TYPE:
-      return JSArrayBuffer::kSize;
-    case JS_TYPED_ARRAY_TYPE:
-      return JSTypedArray::kSize;
-    case JS_DATA_VIEW_TYPE:
-      return JSDataView::kSize;
-    case JS_SET_TYPE:
-      return JSSet::kSize;
-    case JS_MAP_TYPE:
-      return JSMap::kSize;
-    case JS_SET_ITERATOR_TYPE:
-      return JSSetIterator::kSize;
-    case JS_MAP_ITERATOR_TYPE:
-      return JSMapIterator::kSize;
-    case JS_WEAK_MAP_TYPE:
-      return JSWeakMap::kSize;
-    case JS_WEAK_SET_TYPE:
-      return JSWeakSet::kSize;
-    case JS_PROMISE_CAPABILITY_TYPE:
-      return JSPromiseCapability::kSize;
-    case JS_PROMISE_TYPE:
-      return JSPromise::kSize;
-    case JS_REGEXP_TYPE:
-      return JSRegExp::kSize;
-    case JS_CONTEXT_EXTENSION_OBJECT_TYPE:
-      return JSObject::kHeaderSize;
-    case JS_MESSAGE_OBJECT_TYPE:
-      return JSMessageObject::kSize;
-    case JS_ARGUMENTS_TYPE:
-      return JSArgumentsObject::kHeaderSize;
-    case JS_ERROR_TYPE:
-      return JSObject::kHeaderSize;
-    case JS_STRING_ITERATOR_TYPE:
-      return JSStringIterator::kSize;
-    case JS_MODULE_NAMESPACE_TYPE:
-      return JSModuleNamespace::kHeaderSize;
-    default:
-      if (type >= FIRST_ARRAY_ITERATOR_TYPE &&
-          type <= LAST_ARRAY_ITERATOR_TYPE) {
-        return JSArrayIterator::kSize;
-      }
-      UNREACHABLE();
-  }
+  InstanceType type = map()->instance_type();
+  return type == JS_OBJECT_TYPE ? JSObject::kHeaderSize : GetHeaderSize(type);
 }
 
 inline bool IsSpecialReceiverInstanceType(InstanceType instance_type) {