commit | 2a34453dd1afb29bcea6c65f9d883107d2232632 | [log] [tgz] |
---|---|---|
author | Alexander Markov <alexmarkov@google.com> | Fri Jan 21 02:02:00 2022 +0000 |
committer | Commit Bot <commit-bot@chromium.org> | Fri Jan 21 02:02:00 2022 +0000 |
tree | 82d19113a474a6bbd29ca479d71105fcd9e0a02d | |
parent | d17205184ac5e5e9404a376673a4c6b45dd08f37 [diff] |
[vm/aot] Improve AOT compilation speed by using better hash codes This change improves hash code implementations in multiple places in the compiler. That reduces number of probes during lookups in hash maps and improves AOT compilation time of large applications. On a large Flutter app, compiled in release mode for arm64: Total gen_snapshot time 89.184s -> 60.736s (-31.9%) Also, this change adds --hash_map_probes_limit=N option which sets a hard limit for the number of probes in hash maps. This option makes it easy to find hash maps where there are many collisions due to poor hash code implementation. TEST=ci Issue: https://github.com/dart-lang/sdk/issues/43299 Bug: b/154155290 Change-Id: Ibf6f37d4b9f3bf42dd6731bfb4095a7305b98b2d Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/229240 Reviewed-by: Martin Kustermann <kustermann@google.com> Commit-Queue: Alexander Markov <alexmarkov@google.com>
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