Two-threaded parser

src/preparser.cc

Index: src/preparser.cc
diff --git a/src/preparser.cc b/src/preparser.cc
index 2f329764600427e0fc52e3bc223ec031af7097f1..c324fad32c4453dd840af9bc9baca3593c417f8a 100644
--- a/src/preparser.cc
+++ b/src/preparser.cc
@@ -36,6 +36,7 @@
 #include "globals.h"
 #include "hashmap.h"
 #include "list.h"
+#include "parser-thread.h"
 #include "preparse-data-format.h"
 #include "preparse-data.h"
 #include "preparser.h"
@@ -936,10 +937,17 @@ void PreParser::ParseLazyFunctionLiteralBody(bool* ok) {
   // Position right after terminal '}'.
   ASSERT_EQ(Token::RBRACE, scanner()->peek());
   int body_end = scanner()->peek_location().end_pos;
-  log_->LogFunction(body_start, body_end,
-                    function_state_->materialized_literal_count(),
-                    function_state_->expected_property_count(),
-                    strict_mode());
+  if (thread_) {
+    // This is PreParser ran in a separate thread.
+    thread_->Produce(body_start, body_end,
+                     function_state_->materialized_literal_count(),
+                     function_state_->expected_property_count(), strict_mode());
+  } else {
+    log_->LogFunction(body_start, body_end,
+                      function_state_->materialized_literal_count(),
+                      function_state_->expected_property_count(),
+                      strict_mode());
+  }
 }