[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 597 matching lines @@
   Handle<Code> Call(ConvertReceiverMode = ConvertReceiverMode::kAny,
                     TailCallMode tail_call_mode = TailCallMode::kDisallow);
   Handle<Code> CallBoundFunction(TailCallMode tail_call_mode);
   Handle<Code> NonPrimitiveToPrimitive(
       ToPrimitiveHint hint = ToPrimitiveHint::kDefault);
   Handle<Code> OrdinaryToPrimitive(OrdinaryToPrimitiveHint hint);
   Handle<Code> InterpreterPushArgsAndCall(
       TailCallMode tail_call_mode,
       CallableType function_type = CallableType::kAny);
 
+  bool IsCppBuiltin(Name name) const {
+    DCHECK(name < BUILTIN_COUNT);
+    return (builtins_[name].kind == CPP || builtins_[name].kind == API);
+  }
+
+  const Descriptor* DescriptorFor(Name name) const {
+    DCHECK(name < BUILTIN_COUNT);
+    return &builtins_[name];
+  }
+
   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].code);
   }
 
   Address builtin_address(Name name) {
     return reinterpret_cast<Address>(&builtins_[name].code);
   }
 
@@ skipping 53 matching lines @@
 
   friend class Isolate;
 
   DISALLOW_COPY_AND_ASSIGN(Builtins);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_BUILTINS_BUILTINS_H_