[async-await] Remove call indirection in Create and Reject

src/js/async-await.js

 // Copyright 2016 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.
 
 (function(global, utils, extrasUtils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
 // -------------------------------------------------------------------
 // Imports
 
 var AsyncFunctionNext;
 var AsyncFunctionThrow;
 var CreateInternalPromiseCapability;
-var PromiseCreate;
-var PromiseNextMicrotaskID;
-var RejectPromise;
 
 utils.Import(function(from) {
   AsyncFunctionNext = from.AsyncFunctionNext;
   AsyncFunctionThrow = from.AsyncFunctionThrow;
   CreateInternalPromiseCapability = from.CreateInternalPromiseCapability;
-  PromiseCreate = from.PromiseCreate;
-  RejectPromise = from.RejectPromise;
 });
 
 var promiseAsyncStackIDSymbol =
     utils.ImportNow("promise_async_stack_id_symbol");
 var promiseHandledBySymbol =
     utils.ImportNow("promise_handled_by_symbol");
 var promiseForwardingHandlerSymbol =
     utils.ImportNow("promise_forwarding_handler_symbol");
 var promiseHandledHintSymbol =
     utils.ImportNow("promise_handled_hint_symbol");
 
 // -------------------------------------------------------------------
 
 function PromiseCastResolved(value) {
   // TODO(caitp): This is non spec compliant. See v8:5694.
   if (%is_promise(value)) {
     return value;
   } else {
-    var promise = PromiseCreate();
+    var promise = %promise_internal_constructor(UNDEFINED);
     %promise_resolve(promise, value);
     return promise;
   }
 }
 
 // ES#abstract-ops-async-function-await
 // AsyncFunctionAwait ( value )
 // Shared logic for the core of await. The parser desugars
 //   await awaited
 // into
@@ skipping 58 matching lines @@
 // prediction indicates that there is a locally surrounding catch block
 function AsyncFunctionAwaitCaught(generator, awaited, outerPromise) {
   if (DEBUG_IS_ACTIVE && %is_promise(awaited)) {
     SET_PRIVATE(awaited, promiseHandledHintSymbol, true);
   }
   AsyncFunctionAwait(generator, awaited, outerPromise);
 }
 
 // How the parser rejects promises from async/await desugaring
 function RejectPromiseNoDebugEvent(promise, reason) {
-  return RejectPromise(promise, reason, false);
+  return %PromiseReject(promise, reason, false);
 }
 
 function AsyncFunctionPromiseCreate() {
-  var promise = PromiseCreate();
+  var promise = %promise_internal_constructor(UNDEFINED);
   if (DEBUG_IS_ACTIVE) {
     // Push the Promise under construction in an async function on
     // the catch prediction stack to handle exceptions thrown before
     // the first await.
     %DebugPushPromise(promise);
     // Assign ID and create a recurring task to save stack for future
     // resumptions from await.
     var id = %DebugNextMicrotaskId();
     SET_PRIVATE(promise, promiseAsyncStackIDSymbol, id);
     %DebugAsyncTaskEvent("enqueueRecurring", id, "async function");
@@ skipping 19 matching lines @@
 
 %InstallToContext([
   "async_function_await_caught", AsyncFunctionAwaitCaught,
   "async_function_await_uncaught", AsyncFunctionAwaitUncaught,
   "reject_promise_no_debug_event", RejectPromiseNoDebugEvent,
   "async_function_promise_create", AsyncFunctionPromiseCreate,
   "async_function_promise_release", AsyncFunctionPromiseRelease,
 ]);
 
 })