In order to un-block Flutter integration, we introduce partial support for
conditional imports into the CFE. There are two incomplete parts:
- The condition strings are evaluated by the Target.
They should be looked up in the environment, but this introduces
complications with modular compilation.
- Type inference and other static checks are performed with reference to
the implementation (conditionally-imported) library rather than the
interface library.
See issue #30143 for more details.
Bug:
Change-Id: I740b45e9d32796644837de4caefd8d6e8015f229
Reviewed-on: https://dart-review.googlesource.com/34721
Reviewed-by: Peter von der Ahé <ahe@google.com>
Before: Kernel static errors were represented by throwing a distinguished
error or else by calling a distinguished library const constructor.
Now: Kernel static errors are represented by InvalidExpression. To support
error reporting, InvalidExpression has an optional message and a file
offset. A back end can choose to signal these errors at any time; for
example, when deserializing the binary, or when compiling the procedure
containing the static error, or when the erroneous expression is evaluated
at run time.
InvalidStatement is removed because it can be encoded as ExpressionStatement
of InvalidExpression.
Future work:
* supporting static errors where an expression cannot appear in the AST
* allowing InvalidExpression to contain an Expression for error recovery
* adding a top-level list of static errors and warnings to the binary
Bug: https://github.com/dart-lang/sdk/issues/29840
Change-Id: Ifdfe9a76cee6cefed28061bf245be70531d2f413
Reviewed-on: https://dart-review.googlesource.com/31320
Commit-Queue: Kevin Millikin <kmillikin@google.com>
Reviewed-by: Dan Rubel <danrubel@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Without strong mode, a "good enough" implementation is to simply call
the generic method with "dynamic" for the type arguments, which is what
this does. That should be enough to unblock our internal users.
We also need to not report a compile error when
dart_internal/extract_type_arguments.dart imports the hidden
"dart:_internal" library.
This patch does both of those for the VM and dart2js (using its old
front end).
Note that the test still fails because the test is more particular than
most actual user code would be -- it validates that the instantiated
type arguments are *exactly* correct, and not that the returned object
is merely subtype compatible.
Bug:
Change-Id: I0343beace4991861b29712b3fd7067ec8dc8f8ba
Reviewed-on: https://dart-review.googlesource.com/28020
Commit-Queue: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
Reviewed-by: Régis Crelier <regis@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
* The package:kernel/transformations/precompiler.dart is moved to
package:vm and split into 2 libraries: metadata/direct_call and
transformations/cha_devrtualization.
* Fasta 'target-options' command line argument and
package:kernel/target/implementation_option.dart are cleaned up
as they are no longer used.
Issue: https://github.com/dart-lang/sdk/issues/30480
Change-Id: I21a7b6bc62a036a9694e62a5dae890f6120d79ab
Reviewed-on: https://dart-review.googlesource.com/26360
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Previously, the front end recovered from an invalid assignment by
producing an "as" expression, e.g.:
int x;
String y;
x = y;
Would produce an "invalid assignment" error, as well as this kernel
code:
int x;
String y;
x = y as{TypeError} int;
The rationale was that the "as" check was guaranteed to fail, so this
code would produce a runtime error at the correct location. However,
there were two problems:
1. (Minor problem) the "as" doesn't actually fail if the RHS is null.
2. (Major problem) for type inference, the type of an assignment
expression is defined to be the type of the RHS. This means that if
the invalid assignment gets used for type inference, we generate
mal-typed kernel code, e.g.:
int x;
String y;
var z = (x = y);
Gets compiled to:
int x;
String y;
String z = (x = y as{TypeError} int);
This CL addresses both problems by changing the kernel representation
so that it evaluates the RHS and then throws an exception. Since a
"throw" expression has type Bottom, the kernel representation is
guaranteed to be properly typed. This also ensures that an exception
gets thrown if the RHS is null. Finally, as a side bonus, it makes
the error-recovered kernel code more similar to the kernel code we
generate in other error recovery scenarios.
Change-Id: Iac74e0c726ce029ac0560d271413e85c15bfec5c
Reviewed-on: https://dart-review.googlesource.com/24140
Reviewed-by: Kevin Millikin <kmillikin@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Commit-Queue: Paul Berry <paulberry@google.com>
This CL introduces compileToKernel() function in package:vm/kernel_front_end
as the replacement for kernelForProgram() from package:front_end/kernel_generator.
The new function will be used to customize kernel Programs for VM need.
For example, it will perform additional AOT-specific global transformations.
In future, compileToKernel() will be used from Flutter and precompiler2.
Also, this CL cleans up Target.strongModeSdk as it is no longer used.
Issue: https://github.com/dart-lang/sdk/issues/30480
Change-Id: Ib9c2b5d0af955475292df8e456073a5f0e6a64be
Reviewed-on: https://dart-review.googlesource.com/25080
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
This CL adds handling of previously introduced 'strong-aot'
implementation (target-specific) option into VM target.
After this change, it will be possible to enable strong-mode
whole-program optimizations in Flutter (in addition to standalone VM).
Issue: https://github.com/dart-lang/sdk/issues/30480
Change-Id: I054b75ce4ba1b9bcf150e0b7f25fa7ca1bdd187e
Reviewed-on: https://dart-review.googlesource.com/15644
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
This CL replaces outdated VmTarget and FlutterTarget with VmFastaTarget
and FlutterFastaTarget. 'Fasta' suffix is droped from target names.
The new FlutterTarget extends VmTarget, so they share more code.
Change-Id: Id79956698a889c9a49b8a67914f1f96a731407ab
Reviewed-on: https://dart-review.googlesource.com/9423
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Reviewed-by: Peter von der Ahé <ahe@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
This CL adds a new target for kernel front-end, vm_precompiler. This is
an experimental target for new Dart VM precompiler pipeline which
will fully exploit strong mode type system and perform whole-program
optimizations.
As an example of such whole-program optimization, this CL adds
draft implementation of devirtualization of method invocations, which
uses single target computed by closed-world class hierarchy analysis.
Corresponding null checks (required for correctness) are not generated
yet.
Issue: https://github.com/dart-lang/sdk/issues/30480
Change-Id: I704cd16843a08f036a188b1188c80ee4dfbeab3b
Reviewed-on: https://dart-review.googlesource.com/3402
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Original CL had a bug that wasn't visible unless you delete your
out/ReleaseX64/patched_sdk folder.
Patchset #1 is the original CL, patchset #2 shows the fix.
This reverts commit 4aadfe09df.
BUG=
Review-Url: https://codereview.chromium.org/2976543002 .
This CL tweaks the public APIs in package:front_end, and
starts using those APIs outside the package. For example, this
removes 9 uses of DillTarget, so it is not longer mentioned
outside pkg/front_end and the analyzer_target.
Actual changes:
- in package:front_end
* added kernel_generator_impl: new file contains code that
used to be in kernel_generator. Code has some modifications:
it uses a single canonical-root when loading summaries, and
it supports generating both outlines and kernel in one go.
* removed code that didn't belong here:
a. most of calculating deps for .GN moved to patch_sdk
b. vm-specific outcomes moved to kernel-service
* updated how `native` is implemented, so we can more easily
support dart2js and ddc
* updated how we check where `int`, `bool`, etc can be implemented.
* added support "hermetic mode" in modular builds
('chaseDependencies = false' option)
* moved `trim` step out of fasta, and for now call it only within
the public API. This is not yet exposed, and I stopped covering it in
most tests (now only covered in shaker tests). The plan is to add
tests for the public API covering this in the future.
* removed `uriToSource` when serializing outlines
* added unit tests for public APIs
- patch_sdk
* use the public API to craete platform.dill, outline.dill (now
500K insted of 3Mb because it excludes sources), and vmservice_io.dill
* moved here logic internal to .GN
- kernel service
* use the public API
* moved here logic that depends on VM internals (e.g. status enum,
compilation results)
- package:compiler
* use the public API in tools and unit tests
* simplified patched-sdk generation: no more extending fasta's internals
- package:kernel
* fix bug in deserialization: initializers and other lists were
overwritten accidentally with external definitions.
* updated unit tests, moved shared logic to frontend/src/fasta/testing
R=johnniwinther@google.com, paulberry@google.com
Review-Url: https://codereview.chromium.org/2953703002 .
This is intended for profiling, to ensure that type inference and type
promotion do not slow down compilation too much.
Currently the option is just plumbed through to the kernel Target
class since I'm not exactly sure how we'll want to enable/disable this
option; we can plumb it the rest of the way in a future CL.
R=ahe@google.com
Review-Url: https://codereview.chromium.org/2962913002 .
This adds a class CanonicalName that can represent a library, class,
or member. All references now go through a Reference object, which is
linked to both the AST node and its CanonicalName, so either can be
created first.
dartk now accepts multiple input files:
- If multiple dart files are given, they are all compiled.
- If multiple binaries are given, they are linked together.
Mixed dart and binary input is not supported by dartk.
dartk now has a flag --include-sdk which includes the entire SDK in
the output. This is so the SDK can be compiled alone and then linked.
Example of compiling separately and then linking:
dartk foo.dart -o foo.dill
dartk main.dart -o main.dill
dartk --include-sdk -o sdk.dill
dartk main.dill foo.dill sdk.dill --target=vm --link -o program.dill
dartk still has incredibly slow cold start due to the analyzer loading
the dart sdk, so this does not actually speed things up at the moment.
BUG=
R=ahe@google.com, kmillikin@google.com, kustermann@google.com, sigmund@google.com
Review-Url: https://codereview.chromium.org/2665723002 .
This CL adds the work done at https://github.com/dart-lang/reify to SDK.
The commit that is used for the merge is
a2066a68374d49de92ff75f5e1ffc36335fd9451 (Nov 23, 2016). The code is
adjusted to respect the changes of the kernel package in SDK since that
commit.
The reify transformation is run by specifying 'vmreify' target to
'dartk'. The transformation requires its runtime library to present in
the program being transformed. The library is found in its default
location in SDK checkout if 'dartk' is run from its default location in
SDK checkout. To preserve the library in the output, TreeShaker is
disabled in 'vmreify' target.
The "golden" set of tests is also copied from 'dart-lang/reify'
repository, and the appropriate test suite is defined for it.
The bash script 'bin/reified_dart' from 'dart-lang/reify' is rewritten
as Dart script 'pkg/kernel/bin/reified_dart.dart'. It requires path to
'dartk' and path to SDK. Those are taken from their default locations in
SDK if 'reified_dart.dart' is run from its default location in SDK.
The added files were formatted using 'dartfmt' with default settings.
Additionally, the files were checked with 'dartanalyzer --strong'. The
necessary changes were made to fix the error messages. There are some
'hint' and 'error' messages left for some .dart files from the added
test cases, but they reflect intentional errors or conventions in those
files.
R=asgerf@google.com, karlklose@google.com
Review-Url: https://codereview.chromium.org/2697873007 .
When a class from a different build unit is mixed in, the instance
members of the mixed-in class are retained in the external library
definition, so the mixin resolution pass can clone them.
BUG=
R=kmillikin@google.com
Review-Url: https://codereview.chromium.org/2669303002 .
Target-specific modular transformations have to be able to cope with
external libraries. Target-specific global transformations should be
optimizations, and not required for correctness, since a simple linker
may choose not to perform them.
Make mixin resolution modular by making it fail when a mixed-in class
comes from an external library. (We cannot mix in such a class because
we do not necessarily have all class members.)
R=asgerf@google.com
Review-Url: https://codereview.chromium.org/2671653003 .
A single suite of test files is now shared among these configurations,
each with their own expected outputs:
- spec mode
- strong mode
- spec mode w/ type propagation
Although some tests are going to focus on a specific configuration,
for now it seems easier to maintain a single set of tests.
No additional tests have been added in this CL, but the intention
is to start adding more tests.
The baseline tests no longer contain any checked-in dill files.
To simplify dependencies, these tests do not rely on a patched SDK,
which means the async transformer cannot currently be tested with
this framework.
BUG=
R=kmillikin@google.com
Review URL: https://chromereviews.googleplex.com/507347013 .
Peter von der Ahé