tree d53065d8b3b3ebd87019fc637471a0f90e0ec05f
parent ff37b52cf11d0f9d4c668a69a0d4e2f1f905f72b
author Alexander Markov <alexmarkov@google.com> 1633690936 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1633690936 +0000

[vm/aot/tfa] Build cache of dispatch targets in TFA instead of using ClosedWorldClassHierarchy from CFE

Previously, TFA used ClosedWorldClassHierarchy from CFE to look for
dispatch targets of invocations, and cached those lookups. However,
doing lookups via ClosedWorldClassHierarchy for the first time is still
slow. Now TFA builds maps of dispatch targets from AST and no longer
uses ClosedWorldClassHierarchy for the lookup.

Improves time of AOT compilation step 2 (TFA) on a large
Flutter application 170s -> 152s (-10.5%).

TEST=ci

Issue: https://github.com/dart-lang/sdk/issues/42442
Change-Id: I1a22d298e5b2c0ead57c38ddfbf5ebbd1876732f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/215985
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Slava Egorov <vegorov@google.com>