[es6] Introduce spec compliant IsConstructor.

src/builtins.h

 // Copyright 2011 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.
 
 #ifndef V8_BUILTINS_H_
 #define V8_BUILTINS_H_
 
 #include "src/handles.h"
 
 namespace v8 {
@@ skipping 60 matching lines @@
   V(RestrictedStrictArgumentsPropertiesThrower, NO_EXTRA_ARGUMENTS)
 
 // Define list of builtins implemented in assembly.
 #define BUILTIN_LIST_A(V)                                                     \
   V(ArgumentsAdaptorTrampoline, BUILTIN, UNINITIALIZED, kNoExtraICState)      \
                                                                               \
   V(CallFunction, BUILTIN, UNINITIALIZED, kNoExtraICState)                    \
   V(Call, BUILTIN, UNINITIALIZED, kNoExtraICState)                            \
                                                                               \
   V(ConstructFunction, BUILTIN, UNINITIALIZED, kNoExtraICState)               \
+  V(ConstructProxy, BUILTIN, UNINITIALIZED, kNoExtraICState)                  \
   V(Construct, BUILTIN, UNINITIALIZED, kNoExtraICState)                       \
                                                                               \
   V(PushArgsAndCall, BUILTIN, UNINITIALIZED, kNoExtraICState)                 \
                                                                               \
   V(InOptimizationQueue, BUILTIN, UNINITIALIZED, kNoExtraICState)             \
   V(JSConstructStubGeneric, BUILTIN, UNINITIALIZED, kNoExtraICState)          \
   V(JSConstructStubForDerived, BUILTIN, UNINITIALIZED, kNoExtraICState)       \
   V(JSConstructStubApi, BUILTIN, UNINITIALIZED, kNoExtraICState)              \
   V(JSEntryTrampoline, BUILTIN, UNINITIALIZED, kNoExtraICState)               \
   V(JSConstructEntryTrampoline, BUILTIN, UNINITIALIZED, kNoExtraICState)      \
@@ skipping 183 matching lines @@
   static void Generate_NotifyStubFailureSaveDoubles(MacroAssembler* masm);
   static void Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm);
 
   // ES6 section 9.2.1 [[Call]] ( thisArgument, argumentsList)
   static void Generate_CallFunction(MacroAssembler* masm);
   // ES6 section 7.3.12 Call(F, V, [argumentsList])
   static void Generate_Call(MacroAssembler* masm);
 
   // ES6 section 9.2.2 [[Construct]] ( argumentsList, newTarget)
   static void Generate_ConstructFunction(MacroAssembler* masm);
+  // ES6 section 9.5.14 [[Construct]] ( argumentsList, newTarget)
+  static void Generate_ConstructProxy(MacroAssembler* masm);
   // ES6 section 7.3.13 Construct (F, [argumentsList], [newTarget])
   static void Generate_Construct(MacroAssembler* masm);
 
   static void Generate_PushArgsAndCall(MacroAssembler* masm);
 
   static void Generate_FunctionCall(MacroAssembler* masm);
   static void Generate_FunctionApply(MacroAssembler* masm);
   static void Generate_ReflectApply(MacroAssembler* masm);
   static void Generate_ReflectConstruct(MacroAssembler* masm);
 
@@ skipping 25 matching lines @@
 
   friend class BuiltinFunctionTable;
   friend class Isolate;
 
   DISALLOW_COPY_AND_ASSIGN(Builtins);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_BUILTINS_H_