Assign unique IDs to FunctionLiterals

src/parsing/preparser.cc

Index: src/parsing/preparser.cc
diff --git a/src/parsing/preparser.cc b/src/parsing/preparser.cc
index 7f95164412209f2e6c20cda76c9528457dcf91ee..0343b8321b12d66c99cd199a8ca016e64f0a0cf0 100644
--- a/src/parsing/preparser.cc
+++ b/src/parsing/preparser.cc
@@ -195,6 +195,7 @@ PreParser::Expression PreParser::ParseFunctionLiteral(
   FunctionState function_state(&function_state_, &scope_state_, function_scope);
   DuplicateFinder duplicate_finder(scanner()->unicode_cache());
   ExpressionClassifier formals_classifier(this, &duplicate_finder);
+  GetNextFunctionLiteralNum();
 
   Expect(Token::LPAREN, CHECK_OK);
   int start_position = scanner()->location().beg_pos;
@@ -242,6 +243,8 @@ PreParser::Expression PreParser::ParseFunctionLiteral(
 PreParser::LazyParsingResult PreParser::ParseStatementListAndLogFunction(
     PreParserFormalParameters* formals, bool has_duplicate_parameters,
     bool may_abort, bool* ok) {
+  ResetFunctionLiteralNum();
+
   PreParserStatementList body;
   LazyParsingResult result = ParseStatementList(
       body, Token::RBRACE, may_abort, CHECK_OK_VALUE(kLazyParsingComplete));
@@ -254,7 +257,8 @@ PreParser::LazyParsingResult PreParser::ParseStatementListAndLogFunction(
   log_.LogFunction(body_end, formals->num_parameters(),
                    formals->function_length, has_duplicate_parameters,
                    function_state_->materialized_literal_count(),
-                   function_state_->expected_property_count());
+                   function_state_->expected_property_count(),
+                   GetNextFunctionLiteralNum() - 1);
   return kLazyParsingComplete;
 }