| commit | 47b57e8995478243e99553160e139f51b296b34f | [log] [tgz] |
|---|---|---|
| author | Jens Johansen <jensj@google.com> | Wed Apr 01 12:28:34 2020 +0000 |
| committer | commit-bot@chromium.org <commit-bot@chromium.org> | Wed Apr 01 12:28:34 2020 +0000 |
| tree | f17736794b36089c500348c125201193e3db420c | |
| parent | 278a2db4df1a1fef349b89aeaca367dc7463bab7 [diff] |
[CFE] Cache checkInheritanceConflict calculation When compiling a big internal app with the NNBD SDK there's a big time regression. This is a first "poor-mans fix" that "fixes" it via caching which probably is not the best solution, but does the trick. Without change ============== Without NNBD platform: $ out/ReleaseX64/dart pkg/front_end/tool/_fasta/compile.dart --target=dart2js --platform=out/ReleaseX64/dart2js_platform.dill -v bigapp.dart [...] 0:00:14.238352: Built class hierarchy in 1663ms. [...] 0:00:55.871356: Wrote component to bigapp.dart.dill in 5690ms. With NNBD platform: $ out/ReleaseX64/dart pkg/front_end/tool/_fasta/compile.dart --target=dart2js --platform=out/ReleaseX64NNBD/dart2js_platform.dill -v bigapp.dart [...] 0:04:41.842548: Built class hierarchy in 268716ms. [...] 0:05:22.120455: Wrote component to bigapp.dart.dill in 5407ms. So: Big regression; it takes almost 4.5 minutes to built the class hierarchy and almost as long extra to compile as a whole. With change =========== Without NNBD platform: $ out/ReleaseX64/dart pkg/front_end/tool/_fasta/compile.dart --target=dart2js --platform=out/ReleaseX64/dart2js_platform.dill -v bigapp.dart [...] 0:00:15.255893: Built class hierarchy in 2175ms. [...] 0:00:55.203753: Wrote component to bigapp.dart.dill in 5306ms. So: Without the NNBD platform there's basically no change. With NNBD platform: $ out/ReleaseX64/dart pkg/front_end/tool/_fasta/compile.dart --target=dart2js --platform=out/ReleaseX64NNBD/dart2js_platform.dill -v bigapp.dart [...] 0:00:15.864901: Built class hierarchy in 2574ms. [...] 0:00:55.640201: Wrote component to bigapp.dart.dill in 5363ms. So: With the NNBD platform, the speedup is significant and there's basically no change between using the NNBD platform or not. Change-Id: I74993710a34f08f69421b03f2682ff8418af7599 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/141982 Reviewed-by: Johnni Winther <johnniwinther@google.com> Commit-Queue: Jens Johansen <jensj@google.com>
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