tree 8edfcd6b38d639c85c5721ab4d82bc0a2aed3a31
parent 7b75bd8ece701df3519045162cab83afbc44556d
author Clement Skau <cskau@google.com> 1604569873 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1604569873 +0000

[SDK] Replaces async's _AsyncAwaitCompleter with _Future.

Run time (less is better) impact:
dart:
- Calls.AwaitAsyncCall  -43.95% ~ -55.50%
- Calls.AwaitAsyncCallClosureTargetPolymorphic  -40.33% ~ -53.58%
- Calls.AwaitAsyncCallInstanceTargetPolymorphic  -42.69% ~ -55.65%
- Calls.AwaitFutureOrCallInstanceTargetPolymorphicManyAwaits  -42.05% ~ -56.14%
- Calls.Await...  0% ~ -13%
dart-aot:
- Calls.AwaitAsyncCall  -9.748% ~ -11.13%
- Calls.AwaitAsyncCallClosureTargetPolymorphic  -8.673% ~ -13.19%
- Calls.AwaitAsyncCallInstanceTargetPolymorphic  -9.799% ~ -11.74%
- Calls.AwaitFutureOrCallInstanceTargetPolymorphicManyAwaits  -5.412% ~ -13.43%

Code size impact:
- flutter_gallery_app_so_brotli_size  -0.1237% ~ -0.2410%
- flutter_gallery_readonlydata_size  0.1693% ~ 0.2041%
- flutter_gallery_instructions_size  0.1157% ~ 0.1779%
- flutter_gallery_total_size  0.1021% ~ 0.1413%

Bug: https://github.com/dart-lang/sdk/issues/39119
Change-Id: I64d28a8bea078277946d7be43737e265920c8f16
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/126322
Commit-Queue: Clement Skau <cskau@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>