Revert "Classes: Add support for arguments in default constructor"

This reverts commit 3f4ea6c91a962a04407c79f08e5c86ce9ff2911a.

Broke tests on Mac64

http://build.chromium.org/p/client.v8/builders/V8%20Mac64/builds/923/steps/Check/logs/classes

BUG=v8:3672
TBR=dslomov@chromium.org
LOG=N

Review URL: https://codereview.chromium.org/712333003

Cr-Commit-Position: refs/heads/master@{#25269}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25269 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/parser.cc

@@ -302,12 +302,10 @@ FunctionLiteral* Parser::DefaultConstructor(bool call_super, Scope* scope,
 
     body = new (zone()) ZoneList<Statement*>(1, zone());
     if (call_super) {
+      Expression* prop = SuperReference(function_scope, factory(), pos);
       ZoneList<Expression*>* args =
           new (zone()) ZoneList<Expression*>(0, zone());
-      CallRuntime* call = factory()->NewCallRuntime(
-          ast_value_factory()->empty_string(),
-          Runtime::FunctionForId(Runtime::kDefaultConstructorSuperCall), args,
-          pos);
+      Call* call = factory()->NewCall(prop, args, pos);
       body->Add(factory()->NewExpressionStatement(call, pos), zone());
     }
 

src/runtime/runtime-classes.cc

@@ -448,52 +448,5 @@ RUNTIME_FUNCTION(Runtime_StoreKeyedToSuper_Sloppy) {
 
   return StoreKeyedToSuper(isolate, home_object, receiver, key, value, SLOPPY);
 }
-
-
-RUNTIME_FUNCTION(Runtime_DefaultConstructorSuperCall) {
-  HandleScope scope(isolate);
-  DCHECK(args.length() == 0);
-
-  // Compute the frame holding the arguments.
-  JavaScriptFrameIterator it(isolate);
-  it.AdvanceToArgumentsFrame();
-  JavaScriptFrame* frame = it.frame();
-
-  Handle<JSFunction> function(frame->function(), isolate);
-  Handle<Object> receiver(frame->receiver(), isolate);
-
-  Handle<Object> proto_function;
-  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, proto_function,
-                                     Runtime::GetPrototype(isolate, function));
-
-  // Get the actual number of provided arguments.
-  const int argc = frame->ComputeParametersCount();
-
-  // Loose upper bound to allow fuzzing. We'll most likely run out of
-  // stack space before hitting this limit.
-  static int kMaxArgc = 1000000;
-  RUNTIME_ASSERT(argc >= 0 && argc <= kMaxArgc);
-
-  // If there are too many arguments, allocate argv via malloc.
-  const int argv_small_size = 10;
-  Handle<Object> argv_small_buffer[argv_small_size];
-  SmartArrayPointer<Handle<Object> > argv_large_buffer;
-  Handle<Object>* argv = argv_small_buffer;
-  if (argc > argv_small_size) {
-    argv = new Handle<Object>[argc];
-    if (argv == NULL) return isolate->StackOverflow();
-    argv_large_buffer = SmartArrayPointer<Handle<Object> >(argv);
-  }
-
-  for (int i = 0; i < argc; ++i) {
-    argv[i] = handle(frame->GetParameter(i), isolate);
-  }
-
-  Handle<Object> result;
-  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-      isolate, result,
-      Execution::Call(isolate, proto_function, receiver, argc, argv, false));
-  return *result;
-}
 }
 }  // namespace v8::internal

src/runtime/runtime-object.cc

@@ -242,8 +242,10 @@ MaybeHandle<Object> Runtime::DefineObjectProperty(Handle<JSObject> js_object,
 }
 
 
-MaybeHandle<Object> Runtime::GetPrototype(Isolate* isolate,
-                                          Handle<Object> obj) {
+RUNTIME_FUNCTION(Runtime_GetPrototype) {
+  HandleScope scope(isolate);
+  DCHECK(args.length() == 1);
+  CONVERT_ARG_HANDLE_CHECKED(Object, obj, 0);
   // We don't expect access checks to be needed on JSProxy objects.
   DCHECK(!obj->IsAccessCheckNeeded() || obj->IsJSObject());
   PrototypeIterator iter(isolate, obj, PrototypeIterator::START_AT_RECEIVER);
@@ -255,26 +257,15 @@ MaybeHandle<Object> Runtime::GetPrototype(Isolate* isolate,
       isolate->ReportFailedAccessCheck(
           Handle<JSObject>::cast(PrototypeIterator::GetCurrent(iter)),
           v8::ACCESS_GET);
-      RETURN_EXCEPTION_IF_SCHEDULED_EXCEPTION(isolate, Object);
-      return isolate->factory()->undefined_value();
+      RETURN_FAILURE_IF_SCHEDULED_EXCEPTION(isolate);
+      return isolate->heap()->undefined_value();
     }
     iter.AdvanceIgnoringProxies();
     if (PrototypeIterator::GetCurrent(iter)->IsJSProxy()) {
-      return PrototypeIterator::GetCurrent(iter);
+      return *PrototypeIterator::GetCurrent(iter);
     }
   } while (!iter.IsAtEnd(PrototypeIterator::END_AT_NON_HIDDEN));
-  return PrototypeIterator::GetCurrent(iter);
-}
-
-
-RUNTIME_FUNCTION(Runtime_GetPrototype) {
-  HandleScope scope(isolate);
-  DCHECK(args.length() == 1);
-  CONVERT_ARG_HANDLE_CHECKED(Object, obj, 0);
-  Handle<Object> result;
-  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, result,
-                                     Runtime::GetPrototype(isolate, obj));
-  return *result;
+  return *PrototypeIterator::GetCurrent(iter);
 }
 
 

src/runtime/runtime.h

@@ -199,8 +199,7 @@ namespace internal {
   F(StoreToSuper_Strict, 4, 1)                             \
   F(StoreToSuper_Sloppy, 4, 1)                             \
   F(StoreKeyedToSuper_Strict, 4, 1)                        \
-  F(StoreKeyedToSuper_Sloppy, 4, 1)                        \
-  F(DefaultConstructorSuperCall, 0, 1)
+  F(StoreKeyedToSuper_Sloppy, 4, 1)
 
 
 #define RUNTIME_FUNCTION_LIST_ALWAYS_2(F)              \
@@ -829,9 +828,6 @@ class Runtime : public AllStatic {
   MUST_USE_RESULT static MaybeHandle<Object> GetObjectProperty(
       Isolate* isolate, Handle<Object> object, Handle<Object> key);
 
-  MUST_USE_RESULT static MaybeHandle<Object> GetPrototype(
-      Isolate* isolate, Handle<Object> object);
-
   MUST_USE_RESULT static MaybeHandle<Name> ToName(Isolate* isolate,
                                                   Handle<Object> key);
 

test/mjsunit/harmony/classes.js

@@ -624,55 +624,6 @@ function assertAccessorDescriptor(object, name) {
 })();
 
 
-(function TestDefaultConstructorArguments() {
-  var args, self;
-  class Base {
-    constructor() {
-      self = this;
-      args = arguments;
-    }
-  }
-  class Derived extends Base {}
-
-  new Derived;
-  assertEquals(0, args.length);
-
-  new Derived(0, 1, 2);
-  assertEquals(3, args.length);
-  assertTrue(self instanceof Derived);
-
-  var arr = new Array(1e5);
-  var obj = {};
-  Derived.apply(obj, arr);
-  assertEquals(1e5, args.length);
-  assertEquals(obj, self);
-})();
-
-
-(function TestDefaultConstructorArguments2() {
-  var args;
-  class Base {
-    constructor(x, y) {
-      args = arguments;
-    }
-  }
-  class Derived extends Base {}
-
-  new Derived;
-  assertEquals(0, args.length);
-
-  new Derived(1);
-  assertEquals(1, args.length);
-  assertEquals(1, args[0]);
-
-  new Derived(1, 2, 3);
-  assertEquals(3, args.length);
-  assertEquals(1, args[0]);
-  assertEquals(2, args[1]);
-  assertEquals(3, args[2]);
-})();
-
-
 /* TODO(arv): Implement
 (function TestNameBindingInConstructor() {
   class C {