commit | 8aafcbfe8009708eee1be671409e16fb44f3501f | [log] [tgz] |
---|---|---|
author | Paul Berry <paulberry@google.com> | Tue Jul 12 15:36:42 2022 +0000 |
committer | Commit Bot <commit-bot@chromium.org> | Tue Jul 12 15:36:42 2022 +0000 |
tree | 69a5e7033cac2afad415eacbf0c8e6d9171db8d4 | |
parent | b331747f2267425367a56b638efbc5b563d43ad7 [diff] |
Flow analysis: remove `Reference` type hierarchy. Previously, flow analysis used the class `ReferenceWithType` to track references for which it knew the type, and `Reference` (and its subclasses) to track references for which it didn't know the type (or for which the type was unimportant). This change removes the `Reference` class hierarchy, in favor of just using the integer promotion keys. This should reduce the number of memory allocations that flow analysis needs to make. A few pieces of information previously maintained by the `Reference` class hierarchy are now tracked elsewhere: the logic for computing non-promotion reasons is now in `_FlowAnalysisImpl._getNonPromotionReasons`, and the property name and property member (previously maintained by `_PropertyGetReference`) is now maintained by `_PropertyReferenceWithType` (a new subclass of `ReferenceWithType`). Bug: https://github.com/dart-lang/language/issues/2020 Change-Id: I72f2d80b3256bf8b9c9a30bcc55666ecb7c31e47 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/250242 Reviewed-by: Johnni Winther <johnniwinther@google.com> Commit-Queue: Paul Berry <paulberry@google.com>
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