Fix typeof optimization for undetectable

src/compiler/typer.cc

 // Copyright 2014 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.
 
 #include "src/compiler/typer.h"
 
 #include <iomanip>
 
 #include "src/base/flags.h"
 #include "src/bootstrapper.h"
@@ skipping 486 matching lines @@
 Type* Typer::Visitor::ToString(Type* type, Typer* t) {
   // ES6 section 7.1.12 ToString ( argument )
   type = ToPrimitive(type, t);
   if (type->Is(Type::String())) return type;
   return Type::String();
 }
 
 // Type checks.
 
 Type* Typer::Visitor::ObjectIsCallable(Type* type, Typer* t) {
-  if (type->Is(Type::Callable())) return t->singleton_true_;
-  if (!type->Maybe(Type::Callable())) return t->singleton_false_;
+  if (type->Is(Type::DetectableCallable())) return t->singleton_true_;
+  if (!type->Maybe(Type::DetectableCallable())) return t->singleton_false_;
   return Type::Boolean();
 }
 
 Type* Typer::Visitor::ObjectIsNonCallable(Type* type, Typer* t) {
   if (type->Is(Type::NonCallable())) return t->singleton_true_;
   if (!type->Maybe(Type::NonCallable())) return t->singleton_false_;
   return Type::Boolean();
 }
 
 Type* Typer::Visitor::ObjectIsNumber(Type* type, Typer* t) {
@@ skipping 1424 matching lines @@
 Type* Typer::Visitor::TypeConstant(Handle<Object> value) {
   if (Type::IsInteger(*value)) {
     return Type::Range(value->Number(), value->Number(), zone());
   }
   return Type::NewConstant(value, zone());
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8