Adds a new SDK hash to kernels and the VM which is optionally checked
to verify kernels are built for the same SDK as the VM.
This helps catch incompatibilities that are currently causing
subtle bugs and (not so subtle) crashes.
The SDK hash is encoded in kernels as a new field in components.
The hash is derived from the 10 byte git short hash.
This new check can be disabled via:
tools/gn.py ... --no-verify-sdk-hash
This CL bumps the min. (and max.) supported kernel format version,
making the VM backwards incompatible from this point back.
Bug: https://github.com/dart-lang/sdk/issues/41802
Change-Id: I3cbb2d481239ee64dafdaa0e4aac36c80281931b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/150343
Commit-Queue: Clement Skau <cskau@google.com>
Reviewed-by: Jens Johansen <jensj@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Metadata repository might be populated lazily as we are traversing the
component, so it is incorrect to skip empty metadata repositories early
in the serialization process.
Instead we filter empty repositories at the very end - after all nodes
were written out.
Change-Id: I159e0c0213a034388855944af03e72786d9e951b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/148065
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Jens Johansen <jensj@google.com>
For some types it makes sense to distinguish between nullability as a
property of including null and the declared nullability, such as for
type-parameter types and FutureOr types. This CL introduces the
separation between the two concepts. The plan is to use that when
implementing FutureOrType.
Bug: https://github.com/dart-lang/sdk/issues/40123
Change-Id: I90b45bea768e89c213d021d360a481d38377c682
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/147903
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Commit-Queue: Dmitry Stefantsov <dmitryas@google.com>
This makes the string (de)serialization independent of the core library
UTF-8 encoder/decoder so we can change that without affecting kernel
serialization.
It also speeds up serialization and deserialization by a few percent.
Change-Id: I347e471ed0174cc5cb191335dd7c47e6eb3dad59
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/140293
Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
Commit-Queue: Aske Simon Christensen <askesc@google.com>
This CL investigates some properties around the BinaryPrinter in the form
of non-optional-assert-like-things.
Said another way, if the assumptions added here are wrong, we'll crash,
but if the bots doesn't explode the assumptions are probably true and
we can procede from there.
Change-Id: Ia366be0e81164a4004f6d6764002cbb0f7383008
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/137978
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Commit-Queue: Jens Johansen <jensj@google.com>
index to fix VMs coverage issue
This CL fixes the VM not always reporting coverage for mixin usages
properly.
* When asking the VM for coverage you can do it in one of two ways
* Ask the VM for coverage for everything; or
* Ask the VM for coverage for a specific script
* Asking the VM for coverage for everything works perfectly fine.
The VM goes through everything and reports coverage correctly.
* Asking the VM for coverage for a specific script (which is, at least
now, what the flutter tools does) doesn't work in the simple mixin
case described at http://dartbug.com/39779: The VM goes through the
libraries, asking for the list of scripts they "know about",
and checks for matches against what you asked for.
In this case, when asking for 'master.dart', the library for
'lib.dart' says no when it shouldn't --- because of the way the mixin
transformation works the content is actually in lib.dart.
This CL updates the content of the field 'sourceReferences' on Library
to fix the issue.
Fixes#39779
Change-Id: I0c38a323c81d1784ade704837b67ece549fc95d2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/128585
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Used to separate the behaviour without the variance experiment flag
turned off and with the flag turned on. Allows for more specific error
descriptions and allows the backend to avoid emitting variance
annotations for legacy covariance and only when the experiment is
enabled, otherwise there is no way of knowing whether the variance is
user specified.
Change-Id: Ia3070a1358e9b0fef10a3ce5057df881b9659832
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/121140
Commit-Queue: Kallen Tu <kallentu@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Reviewed-by: Leaf Petersen <leafp@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
In my measurements this changes the time it takes to write the sdk by
-11.1274% +/- 0.624366% (via slightly modified
pkg/kernel/test/binary_bench.dart AstToBinary out/ReleaseX64/vm_platform_strong.dill)
Change-Id: I4c5cbe17f42b70ef361b2edda0b33c8fc1727b63
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/119540
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Commit-Queue: Jens Johansen <jensj@google.com>
Add support for the `late` modifier on fields and local variables in
CFE, and `required` on named parameters When using the option
--enable-experiment=non-nullable the `isLate` and `isRequired` flags will be set
accordingly on Field and VariableDeclaration nodes.
Closes#37686Closes#37684
Change-Id: If37fc93defdabc5cc974f3f068f57752a665f4cb
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/113036
Commit-Queue: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Jens Johansen <jensj@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Adds Extension node to kernel/ast, currently with serialization. This
is needed to support resolution of extension methods through dill
boundaries.
Adds (Source)ExtensionBuilder for build Extension nodes and
DeclarationBuilder as common superclass of ClassBuilder and
ExtensionBuilder.
Change-Id: Id945a40452f2729f9a4f390477dd6c76f9030eaa
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/112256
Commit-Queue: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
A kernel library will say it has the newest language version if no
language version is set.
This basically preserves the current semantics of always being on the
newest version (if nothing is explicitly done), e.g. if creating a kernel
library by hand and not setting it.
The front_end also utilize this and just doesn't set it, if it isn't set.
Change-Id: I033fef13626ee034030ba8fc9d141b182ba1a5ba
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/111739
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>
During constant evaluation, unused arguments to a const constructor are
thrown away after evaluation, since their values do not affect the
resulting instance constant. If such an unused argument ends up
unevaluated, any errors that would arise in the final evaluation are
not reported.
This CL adds space in the Kernel AST for saving these unevaluated
expressions so they can be checked during final constant evaluation.
Even though this is an incompatible change, no update is needed to the
VM code (except for the version bump), since the VM does not support
InstanceCreation nodes in the first place.
Change-Id: I4752562c1164efbba79eb018c15b07ed8354ce5f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/105761
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Commit-Queue: Aske Simon Christensen <askesc@google.com>
This for instance allows the VM to include all patches
(e.g. the previously missing `runtime/lib/date_patch.dart`)
in what's returned from `LoadedScripts()`.
Over time this also allows for `LoadedScripts()` to be simplified and
become faster (it's currently something like O(m + m*n) where m is the
number of results in DictionaryIterator(*this) and n is the number of
returned scripts).
Change-Id: I4b5a6a0fe666b774fc0987d099ed02e81ac97b43
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/98660
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Kevin Millikin <kmillikin@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
This is used in constant evaluation to represent const constructor
invocations with unevaluated field values or asserts.
Change-Id: I1d2d60a18f967a4dd195b3b5895db9a126c47803
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/98561
Reviewed-by: Kevin Millikin <kmillikin@google.com>
These arise when the constant evaluator partially evaluates collections
containing spreads or control-flow constructs with unevaluated
subexpressions. They are removed by the final constant evaluation.
Change-Id: Icdd155c4805cbcefe6aa4b45c2f85ec258e7bd36
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/95760
Commit-Queue: Aske Simon Christensen <askesc@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Having a block as body instead of a list of expressions simplifies
code handling block expressions. Since it is always a block, it can
be left untagged in the serialized representation so the serialized
representation is not changed with this change.
Change-Id: I3c34f663041ff8cb4a530c2d6a148343e59c68fe
Reviewed-on: https://dart-review.googlesource.com/c/94223
Commit-Queue: Kevin Millikin <kmillikin@google.com>
Commit-Queue: Dmitry Stefantsov <dmitryas@google.com>
Auto-Submit: Kevin Millikin <kmillikin@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Fasta can generate synthetic libraries.
Previously we didn't include them when serializing, but that leaves
references in the binary to libraries that doesn't exist which isn't
ideal.
This change includes them, and adds a flag to kernel Libraries such that
we know they are synthetic.
Change-Id: Ied25a21cd1f384d318347021bc7ec18dae3a4e05
Reviewed-on: https://dart-review.googlesource.com/c/91722
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Peter von der Ahé <ahe@google.com>
This achieves consistency with similar getters in the API.
This is technically a breaking change, since it changes a published
part of the Kernel API. Since the constants API is relatively new and
so far only used internally in the AOT compiler, the change is
expected to be unproblematic.
Closes https://github.com/dart-lang/sdk/issues/35696
Change-Id: I3ca30922580d226ccbdb6f77496983c21ef2102b
Reviewed-on: https://dart-review.googlesource.com/c/90220
Commit-Queue: Aske Simon Christensen <askesc@google.com>
Reviewed-by: Kevin Millikin <kmillikin@google.com>
Add Kernel syntactic support for constants constructed by
bool.fromEnvironment, int.fromEnvironment, and String.fromEnvironment.
These values are not necessarily available at compile time. Because
constants can depend on these values, there is also an unevaluated constant
that represents an expression depending on environment values.
This syntax is not yet produced by the Fasta compiler.
Change-Id: Ie96ea7f60a7efcd35ac802b320a00f398d41232e
Reviewed-on: https://dart-review.googlesource.com/c/88827
Commit-Queue: Kevin Millikin <kmillikin@google.com>
Reviewed-by: Aske Simon Christensen <askesc@google.com>
References can be null --- it's written as the byte [0].
Thus in the null case it would before be [0] and now be [0].
In the non-null case it would before be [1, xyz] (1 for Tag.Something
and xyz for the actual, now positive, uint30). Now it would be [xyz].
Change-Id: Ibc08d3afb7275b0429a4d6c5e667fbd381121489
Reviewed-on: https://dart-review.googlesource.com/c/85394
Reviewed-by: Kevin Millikin <kmillikin@google.com>
Commit-Queue: Jens Johansen <jensj@google.com>
Clement Skau