[turbofan] Inline calls to CPP builtins

src/builtins/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_BUILTINS_H_
 #define V8_BUILTINS_BUILTINS_H_
 
 #include "src/base/flags.h"
 #include "src/handles.h"
 
@@ skipping 582 matching lines @@
   Code* builtin(Name name) {
     // Code::cast cannot be used here since we access builtins
     // during the marking phase of mark sweep. See IC::Clear.
     return reinterpret_cast<Code*>(builtins_[name]);
   }
 
   Address builtin_address(Name name) {
     return reinterpret_cast<Address>(&builtins_[name]);
   }
 
-  const char* name(int index);
+  static const char* name(int index);
+
+  // Returns the C++ entry point for builtins implemented in C++, and the null
+  // Address otherwise.
+  static Address CppEntryOf(int index);
+
+  static bool IsCpp(int index);
+  static bool IsApi(int index);
+  static bool HasCppImplementation(int index);
 
   bool is_initialized() const { return initialized_; }
 
   MUST_USE_RESULT static MaybeHandle<Object> InvokeApiFunction(
       Isolate* isolate, bool is_construct, Handle<HeapObject> function,
       Handle<Object> receiver, int argc, Handle<Object> args[],
       Handle<HeapObject> new_target);
 
   enum ExitFrameType { EXIT, BUILTIN_EXIT };
 
@@ skipping 45 matching lines @@
 
   friend class Isolate;
 
   DISALLOW_COPY_AND_ASSIGN(Builtins);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_BUILTINS_BUILTINS_H_