Reland Async/await Promise dependency graph

src/parsing/parser.cc

Index: src/parsing/parser.cc
diff --git a/src/parsing/parser.cc b/src/parsing/parser.cc
index 16d29c24df47b0222d2c42826cd6b17742e9c3a2..460411d5d50e664a2aeff7a7615dd070bb87c270 100644
--- a/src/parsing/parser.cc
+++ b/src/parsing/parser.cc
@@ -4564,7 +4564,7 @@ Expression* Parser::RewriteAwaitExpression(Expression* value, int await_pos) {
   // yield do {
   //   promise_tmp = .promise;
   //   tmp = <operand>;
-  //   %AsyncFunctionAwait(.generator_object, tmp);
+  //   %AsyncFunctionAwait(.generator_object, tmp, promise_tmp);
   //   promise_tmp
   // }
   // The value of the expression is returned to the caller of the async
@@ -4609,11 +4609,13 @@ Expression* Parser::RewriteAwaitExpression(Expression* value, int await_pos) {
       zone());
 
   ZoneList<Expression*>* async_function_await_args =
-      new (zone()) ZoneList<Expression*>(2, zone());
+      new (zone()) ZoneList<Expression*>(3, zone());
   Expression* generator_object =
       factory()->NewVariableProxy(generator_object_variable);
   async_function_await_args->Add(generator_object, zone());
   async_function_await_args->Add(factory()->NewVariableProxy(temp_var), zone());
+  async_function_await_args->Add(factory()->NewVariableProxy(promise_temp_var),
+                                 zone());
 
   // The parser emits calls to AsyncFunctionAwaitCaught, but the
   // AstNumberingVisitor will rewrite this to AsyncFunctionAwaitUncaught