tree 0b4f1048f80d43ac40a2bf80deefa7bb0a9b4894
parent 85a4fdb81a7fc4e49a9a675684d0359122600a09
author Alexander Markov <alexmarkov@google.com> 1561055241 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1561055241 +0000

[vm/bytecode] Represent classes, libraries, scripts and recursive types in bytecode

Size of a large application:
Before: 26628600
After: 21480120 (-19.3%)

Size of snapshots:

isolate_snapshot_framework.bin
Before: 9322496
After: 6782976 (-27.2%)

isolate_snapshot_product_framework.bin
Before: 9166848
After: 6602752 (-27.9%)

Regressions in tests:

1) Test language_2/type_alias_equality_test/04 fails similarly to default mode, as VM
does not implement comparison of function types according to the specification.
Previously this test was passing as function types were canonicalized in bytecode,
which was not always correct. This CL fixes the problem with canonicalization of
function types in bytecode and the test starts failing again.

2) Tests standalone_2/entrypoints_verification_test, standalone_2/io/test_extension_test,
standalone_2/io/test_extension_fail_test fail as native extensions are not supported
in bytecode yet. These tests start passing after df5e7aac17365b0bcca8fe6d4fb6c4838e2d67ba,
which switched bytecode tests to kernel service (on x64), because kernel service doesn't
drop ASTs. This CL switches from reading AST library declarations to bytecode even if
AST is not removed, so tests fail again.

Change-Id: I8b7ba44bfa49d0b1599b2509553ff7c831a4e244
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/104700
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Régis Crelier <regis@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>