Daco Harkes
33e170ed56
Duplicates `_CompactIterable` and `_CompactIterator` to `_CompactIterableImmutable` and `_CompactIteratorImmutable` to prevent the `_data` field to store both modifiable and unmodifiable lists. This speeds up iteration by about 20% (more info on the bug). Does not use mixins for code sharing, because all the fields need to be in the concrete classes anyway. Closes: https://github.com/dart-lang/sdk/issues/48280 TEST=existing lib tests Change-Id: I514d058d02ef3b26b475000daea3afc12f37c566 Cq-Include-Trybots: luci.dart.try:analyzer-nnbd-linux-release-try,app-kernel-linux-debug-x64-try,dart-sdk-linux-try,front-end-nnbd-linux-release-x64-try,pkg-linux-debug-try,vm-canary-linux-debug-try,vm-kernel-asan-linux-release-x64-try,vm-kernel-checked-linux-release-x64-try,vm-kernel-linux-debug-x64c-try,vm-kernel-linux-debug-x64-try,vm-kernel-nnbd-linux-release-simarm-try,vm-kernel-optcounter-threshold-linux-release-x64-try,vm-kernel-precomp-android-release-arm_x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-linux-debug-x64c-try,vm-kernel-reload-linux-debug-x64-try,vm-kernel-reload-rollback-linux-debug-x64-try,vm-precomp-ffi-qemu-linux-release-arm-try,vm-kernel-precomp-linux-debug-simarm_x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-tsan-linux-release-x64-try,vm-kernel-tsan-linux-release-x64-try Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/231243 Reviewed-by: Ryan Macnak <rmacnak@google.com> Commit-Queue: Daco Harkes <dacoharkes@google.com>
This package hosts VM specific Dart code and helper scripts.