Looking at instructions this seems to speedup compilation of
`compile.dart` with about 1.00% in AOT mode.
Occasionally there's also a measurable time improvement, e.g.
```
msec task-clock:u: -1.3447% +/- 1.1644%
seconds time elapsed: -1.3438% +/- 1.1638%
seconds user: -1.8838% +/- 1.4478%
```
Change-Id: I98866740b00bc01c70dd82d7591864bcb278394d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/303701
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Jens Johansen
4fd173a43e