commit 68f502cc61cb75de3df3ffba7118926603fa16bf
author Martin Kustermann <kustermann@google.com> Mon Feb 07 10:06:41 2022 +0000
committer Commit Bot <commit-bot@chromium.org> Mon Feb 07 10:06:41 2022 +0000
tree ca7dd6ee493c5a4c4d0aa7851fdc07254c09041b
parent c9f223c5bd92762266423f3f6756595e7fed8cc5

[vm] Check for common case (_Future) before uncommon case (is! Future / 3rd party future)

TEST=ci

Change-Id: Iac123e20a889d8b3152bd3934c12ed012aebd8d0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/231944
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>

sdk/lib/_internal/vm/lib/async_patch.dart

diff --git a/sdk/lib/_internal/vm/lib/async_patch.dart b/sdk/lib/_internal/vm/lib/async_patch.dart
index ee371e7..0e4dcd1 100644
--- a/sdk/lib/_internal/vm/lib/async_patch.dart
+++ b/sdk/lib/_internal/vm/lib/async_patch.dart
@@ -70,10 +70,10 @@
 Future _awaitHelper(var object, dynamic Function(dynamic) thenCallback,
     dynamic Function(dynamic, StackTrace) errorCallback, Function awaiter) {
   late _Future future;
-  if (object is! Future) {
-    future = new _Future().._setValue(object);
-  } else if (object is _Future) {
+  if (object is _Future) {
     future = object;
+  } else if (object is! Future) {
+    future = new _Future().._setValue(object);
   } else {
     return object.then(thenCallback, onError: errorCallback);
   }