commit | 0f371f2dba0dac9179c042cc46ce7ec6b1b90ab2 | [log] [tgz] |
---|---|---|
author | Vyacheslav Egorov <vegorov@google.com> | Tue Jan 26 11:03:29 2021 +0000 |
committer | commit-bot@chromium.org <commit-bot@chromium.org> | Tue Jan 26 11:03:29 2021 +0000 |
tree | 49e1c9e218d6e0065570e51b4954f4d88f920c69 | |
parent | 67e71d02c89333be1d9daad53109da051bb84ef8 [diff] |
[vm] Fix problems with TTS specialization * Correctly handle _Smi type when producing TTS for it. Previously it would not correctly establish that an instance of _Smi is assignable to _Smi causing it to always fall through into runtime system; * Correctly handle Null type as a type argument when checking C<Null> is C<X>, if Null is assignable to X we need to explicitly check if type argument is Null because cid ranges don't really handle this check. * Strengthen the assert checking that TTS specialization succeeded: check that specialization is (bitwise) different from the previous version of the stub. If they are equal that means specialization failed. TEST=vm/cc/TTS_SubtypeRangeCheck,vm/cc/TTS_Smi Change-Id: I151a89b52ae07d7e5acce14f59bcb3226bfa1f36 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/180842 Commit-Queue: Vyacheslav Egorov <vegorov@google.com> Reviewed-by: Alexander Markov <alexmarkov@google.com>
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