[wasm] Support validation of asm.js modules with != 3 args.

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/deoptimizer.h"
@@ skipping 644 matching lines @@
 }
 
 
 RUNTIME_FUNCTION(Runtime_InNewSpace) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_CHECKED(Object, obj, 0);
   return isolate->heap()->ToBoolean(isolate->heap()->InNewSpace(obj));
 }
 
+RUNTIME_FUNCTION(Runtime_IsAsmWasmCode) {
+  SealHandleScope shs(isolate);
+  DCHECK(args.length() == 1);
+  CONVERT_ARG_HANDLE_CHECKED(JSFunction, function, 0);
+
+  if (!function->shared()->HasAsmWasmData()) {
+    // Doesn't have wasm data.
+    return isolate->heap()->ToBoolean(false);
+  }
+  if (function->shared()->code() !=
+      isolate->builtins()->builtin(Builtins::kInstantiateAsmJs)) {
+    // Hasn't been compiled yet.
+    return isolate->heap()->ToBoolean(false);
+  }
+  return isolate->heap()->ToBoolean(true);
+}
 
 #define ELEMENTS_KIND_CHECK_RUNTIME_FUNCTION(Name)       \
   RUNTIME_FUNCTION(Runtime_Has##Name) {                  \
     CONVERT_ARG_CHECKED(JSObject, obj, 0);               \
     return isolate->heap()->ToBoolean(obj->Has##Name()); \
   }
 
 ELEMENTS_KIND_CHECK_RUNTIME_FUNCTION(FastSmiElements)
 ELEMENTS_KIND_CHECK_RUNTIME_FUNCTION(FastObjectElements)
 ELEMENTS_KIND_CHECK_RUNTIME_FUNCTION(FastSmiOrObjectElements)
@@ skipping 58 matching lines @@
       WasmCompiledModuleSerializer::DeserializeWasmModule(isolate, &sc);
   Handle<FixedArray> compiled_module;
   if (!maybe_compiled_module.ToHandle(&compiled_module)) {
     return isolate->heap()->undefined_value();
   }
   return *wasm::CreateCompiledModuleObject(isolate, compiled_module);
 }
 
 }  // namespace internal
 }  // namespace v8