[stubs] Improve code generation for ToBoolean.

src/objects.cc

 // Copyright 2015 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/objects.h"
 
 #include <cmath>
 #include <iomanip>
 #include <sstream>
 
@@ skipping 12608 matching lines @@
     } else if (!shared_info->is_anonymous_expression()) {
       builder.AppendString(handle(String::cast(shared_info->name()), isolate));
     }
   }
   builder.AppendString(Handle<String>::cast(shared_info->GetSourceCode()));
   return builder.Finish().ToHandleChecked();
 }
 
 void Oddball::Initialize(Isolate* isolate, Handle<Oddball> oddball,
                          const char* to_string, Handle<Object> to_number,
-                         bool to_boolean, const char* type_of, byte kind) {
+                         const char* type_of, byte kind) {
   Handle<String> internalized_to_string =
       isolate->factory()->InternalizeUtf8String(to_string);
   Handle<String> internalized_type_of =
       isolate->factory()->InternalizeUtf8String(type_of);
   oddball->set_to_number_raw(to_number->Number());
-  oddball->set_to_boolean(isolate->heap()->ToBoolean(to_boolean));
   oddball->set_to_number(*to_number);
   oddball->set_to_string(*internalized_to_string);
   oddball->set_type_of(*internalized_type_of);
   oddball->set_kind(kind);
 }
 
 void Script::SetEvalOrigin(Handle<Script> script,
                            Handle<SharedFunctionInfo> outer_info,
                            int eval_position) {
   if (eval_position == kNoSourcePosition) {
@@ skipping 6280 matching lines @@
 
   Object* data_obj =
       constructor->shared()->get_api_func_data()->access_check_info();
   if (data_obj->IsUndefined(isolate)) return nullptr;
 
   return AccessCheckInfo::cast(data_obj);
 }
 
 }  // namespace internal
 }  // namespace v8