| commit | 2de63ac01c3f092b24da50d1080617f3244e7b05 | [log] [tgz] |
|---|---|---|
| author | Martin Kustermann <kustermann@google.com> | Fri Nov 16 11:18:22 2018 +0000 |
| committer | commit-bot@chromium.org <commit-bot@chromium.org> | Fri Nov 16 11:18:22 2018 +0000 |
| tree | a49f29e8f41d77b172c86579b8f676f8c5ff6313 | |
| parent | 79b85ae94409225d57e9bc78f54a566c896e1aa6 [diff] |
[VM] Add @pragma annotations on Field, make @pragma annotations work generally
Currently the @pramga('vm:exact-result-type') annotation only works if
the function is a recognized method. This change changes that to make
the VM just look if a function has the annotation (no matter if it's
also in the list of recognized methods or not).
Furthermore this CL adds a "has_pragma" bit to [Field] objects, similar
to how we have it on [Function]/[Class]es. This allows annotating
fields with types, as we do with function return types.
Furthermore this CL lets the type propgagator use
@pragma('vm:exact-result-type') annotations to narrow the [CompileType]
set on [LoadFieldInstr]s.
Since the @pragma is a general feature, this CL moves the
`Function::FindPragma()` to `Library::FindPragma` (which is where any
other metadata lookup happens). We also let the `FindPragma` accept any
of Class/Function/Field objects.
Furthermore this CL adds a bailout if we try to evaluate metadata in
the background compiler, since the background compiler is not allowed
to execute generated code. The bailout should trigger a re-compilation
on the mutator thread.
Furthermore the `FindPragma()` function is fixed to handle the case
when the evaluation of the metadata results in e.g. a language error.
In this case we simply claim to not have found a pragma annotation.
Issue https://github.com/dart-lang/sdk/issues/31954
Change-Id: I0900a80d5ae0f3e8d09baf13cba1b20dd974df31
Reviewed-on: https://dart-review.googlesource.com/c/84037
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
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