[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 604 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->code() !=

[Michael Starzinger, 2016/08/12 09:21:56]

Lets just test function->shared()->code() here. The shared code is always the
unoptimized code and will remain to be the instantiation stub even when we
decide to optimize the module function. This will also cover the case where
--always-opt triggers optimization of the module code.

[bradn, 2016/08/12 18:50:02]

Done.

+      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