Fix --trace-parse.

src/parser.cc

 // 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.
 
 #include "src/v8.h"
 
 #include "src/api.h"
 #include "src/ast.h"
 #include "src/base/platform/platform.h"
 #include "src/bootstrapper.h"
@@ skipping 4808 matching lines @@
     result->capture_count = capture_count;
   }
   return !parser.failed();
 }
 
 
 bool Parser::Parse() {
   DCHECK(info()->function() == NULL);
   FunctionLiteral* result = NULL;
   pre_parse_timer_ = isolate()->counters()->pre_parse();
-  if (allow_natives_syntax() || extension_ != NULL) {
+  if (FLAG_trace_parse || allow_natives_syntax() || extension_ != NULL) {
     // If intrinsics are allowed, the Parser cannot operate independent of the
     // V8 heap because of Runtime. Tell the string table to internalize strings
     // and values right after they're created.
     ast_value_factory_->Internalize(isolate());
   }
 
   if (info()->is_lazy()) {
     DCHECK(!info()->is_eval());
     if (info()->shared_info()->is_function()) {
       result = ParseLazy();
@@ skipping 10 matching lines @@
   DCHECK(ast_value_factory_->IsInternalized());
   // info takes ownership of ast_value_factory_.
   if (info()->ast_value_factory() == NULL) {
     info()->SetAstValueFactory(ast_value_factory_);
   }
   ast_value_factory_ = NULL;
   return (result != NULL);
 }
 
 } }  // namespace v8::internal