[turbofan] Make %Arguments composable with inlining.

src/runtime/runtime.h

 // Copyright 2012 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_RUNTIME_RUNTIME_H_
 #define V8_RUNTIME_RUNTIME_H_
 
 #include "src/allocation.h"
 #include "src/objects.h"
 #include "src/unicode.h"
@@ skipping 1159 matching lines @@
       Handle<Object> value, LanguageMode language_mode);
 
   MUST_USE_RESULT static MaybeHandle<Object> GetObjectProperty(
       Isolate* isolate, Handle<Object> object, Handle<Object> key,
       LanguageMode language_mode = SLOPPY);
 
   MUST_USE_RESULT static MaybeHandle<Object> KeyedGetObjectProperty(
       Isolate* isolate, Handle<Object> receiver_obj, Handle<Object> key_obj,
       LanguageMode language_mode);
 
+  // TODO(mstarzinger): Remove this once %DefaultConstructorCallSuper is gone.
   MUST_USE_RESULT static MaybeHandle<Object> GetPrototype(
       Isolate* isolate, Handle<Object> object);
 
   enum TypedArrayId {
     // arrayIds below should be synchronized with typedarray.js natives.
     ARRAY_ID_UINT8 = 1,
     ARRAY_ID_INT8 = 2,
     ARRAY_ID_UINT16 = 3,
     ARRAY_ID_INT16 = 4,
     ARRAY_ID_UINT32 = 5,
@@ skipping 10 matching lines @@
                                    size_t* element_size);
 
   // Used in runtime.cc and hydrogen's VisitArrayLiteral.
   MUST_USE_RESULT static MaybeHandle<Object> CreateArrayLiteralBoilerplate(
       Isolate* isolate, Handle<FixedArray> literals,
       Handle<FixedArray> elements, bool is_strong);
 
   static MaybeHandle<JSArray> GetInternalProperties(Isolate* isolate,
                                                     Handle<Object>);
 
+  // Find the arguments of the JavaScript function invocation that called
+  // into C++ code. Collect these in a newly allocated array of handles
+  // (possibly prefixed by a number of empty handles).
+  // TODO(mstarzinger): Temporary workaround until this is only used by the
+  // %_Arguments and %_ArgumentsLength intrinsics. Make this function local to
+  // runtime-scopes.cc then.
+  static base::SmartArrayPointer<Handle<Object>> GetCallerArguments(
+      Isolate* isolate, int prefix_argc, int* total_argc);
+
   static bool AtomicIsLockFree(uint32_t size);
 };
 
 
 std::ostream& operator<<(std::ostream&, Runtime::FunctionId);
 
 //---------------------------------------------------------------------------
 // Constants used by interface to runtime functions.
 
 class AllocateDoubleAlignFlag : public BitField<bool, 0, 1> {};
@@ skipping 24 matching lines @@
 inline bool Runtime::AtomicIsLockFree(uint32_t size) {
   return size == 1 || size == 2 || size == 4;
 }
 
 #endif
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_RUNTIME_RUNTIME_H_