[wasm] Use more precise types for some WASM objects.

src/runtime/runtime-test.cc

 // Copyright 2014 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/runtime/runtime-utils.h"
 
 #include <memory>
 
 #include "src/arguments.h"
 #include "src/compiler-dispatcher/optimizing-compile-dispatcher.h"
@@ skipping 718 matching lines @@
 
 #undef FIXED_TYPED_ARRAYS_CHECK_RUNTIME_FUNCTION
 
 
 RUNTIME_FUNCTION(Runtime_SpeciesProtector) {
   SealHandleScope shs(isolate);
   DCHECK_EQ(0, args.length());
   return isolate->heap()->ToBoolean(isolate->IsArraySpeciesLookupChainIntact());
 }
 
+#define CONVERT_ARG_HANDLE_CHECKED_2(Type, name, index) \
+  CHECK(Type::Is##Type(args[index]));                   \
+  Handle<Type> name = args.at<Type>(index);
+
 // Take a compiled wasm module, serialize it and copy the buffer into an array
 // buffer, which is then returned.
 RUNTIME_FUNCTION(Runtime_SerializeWasmModule) {
   HandleScope shs(isolate);
   DCHECK(args.length() == 1);
-  CONVERT_ARG_HANDLE_CHECKED(JSObject, module_obj, 0);
+  CONVERT_ARG_HANDLE_CHECKED_2(WasmModuleObject, module_obj, 0);
 
-  Handle<FixedArray> orig =
-      handle(FixedArray::cast(module_obj->GetInternalField(0)));
+  Handle<WasmCompiledModule> orig = handle(module_obj->get_compiled_module());
   std::unique_ptr<ScriptData> data =
       WasmCompiledModuleSerializer::SerializeWasmModule(isolate, orig);
   void* buff = isolate->array_buffer_allocator()->Allocate(data->length());
   Handle<JSArrayBuffer> ret = isolate->factory()->NewJSArrayBuffer();
   JSArrayBuffer::Setup(ret, isolate, false, buff, data->length());
   memcpy(buff, data->data(), data->length());
   return *ret;
 }
 
 // Take an array buffer and attempt to reconstruct a compiled wasm module.
@@ skipping 29 matching lines @@
   if (!maybe_compiled_module.ToHandle(&compiled_module)) {
     return isolate->heap()->undefined_value();
   }
   return *WasmModuleObject::New(
       isolate, Handle<WasmCompiledModule>::cast(compiled_module));
 }
 
 RUNTIME_FUNCTION(Runtime_ValidateWasmInstancesChain) {
   HandleScope shs(isolate);
   DCHECK(args.length() == 2);
-  CONVERT_ARG_HANDLE_CHECKED(JSObject, module_obj, 0);
+  CONVERT_ARG_HANDLE_CHECKED_2(WasmModuleObject, module_obj, 0);
   CONVERT_ARG_HANDLE_CHECKED(Smi, instance_count, 1);
   wasm::testing::ValidateInstancesChain(isolate, module_obj,
                                         instance_count->value());
   return isolate->heap()->ToBoolean(true);
 }
 
 RUNTIME_FUNCTION(Runtime_ValidateWasmModuleState) {
   HandleScope shs(isolate);
   DCHECK(args.length() == 1);
-  CONVERT_ARG_HANDLE_CHECKED(JSObject, module_obj, 0);
+  CONVERT_ARG_HANDLE_CHECKED_2(WasmModuleObject, module_obj, 0);
   wasm::testing::ValidateModuleState(isolate, module_obj);
   return isolate->heap()->ToBoolean(true);
 }
 
 RUNTIME_FUNCTION(Runtime_ValidateWasmOrphanedInstance) {
   HandleScope shs(isolate);
   DCHECK(args.length() == 1);
-  CONVERT_ARG_HANDLE_CHECKED(JSObject, instance_obj, 0);
-  wasm::testing::ValidateOrphanedInstance(isolate, instance_obj);
+  CONVERT_ARG_HANDLE_CHECKED_2(WasmInstanceObject, instance, 0);
+  wasm::testing::ValidateOrphanedInstance(isolate, instance);
   return isolate->heap()->ToBoolean(true);
 }
 
 }  // namespace internal
 }  // namespace v8