The front end frequently needs to know whether a procedure is a
"synthetic forwarder", meaning that it is a forwarding stub and *not*
a forwarding semi-stub. This CL provides a getter to compute this,
reducing the risk of front end bugs.
Change-Id: I1a9c584b7843948e7ac256dace25efa99b304bf6
Reviewed-on: https://dart-review.googlesource.com/36900
Commit-Queue: Samir Jindel <sjindel@google.com>
Reviewed-by: Samir Jindel <sjindel@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>
Fixes#31586.
Note that none of the back-ends handle Instantiation nodes yet, so the
language_2 tests added in this CL
(instantiate_tearoff_after_contravariance_check_test,
instantiate_tearoff_of_call_test, and instantiate_tearoff_test) fail
pretty much across the board right now.
Includes two fixes to Instantiation.getStaticType and the kernel type checker:
- Previously, they attempted to perform substitution on the full
function type, which had no effect because the type parameters were
bound.
- The type checker was not checking that type parameter bounds were
satisfied.
Note that the front end doesn't yet check that type parameter bounds
are satisfied by the inferred type parameters. I will address that in
a follow-up CL.
Change-Id: Ib0ad7a5fc5f4a2fdc8c99abe1f2d3d15b21a4974
Reviewed-on: https://dart-review.googlesource.com/29744
Commit-Queue: Paul Berry <paulberry@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
When the body of a function node in a Procedure is lazy loaded the value
of the Procedures transformerFlags is not properly set before the body
has been read. That means that one can get the wrong result.
This CL makes sure to read the body (thereby setting the correct result)
before answering. The same thing is neccessary when setting the value to
avoid it being overwritten later.
Bug:
Change-Id: Id5e631e69885af0872b9644d02eb7b27dfb13391
Reviewed-on: https://dart-review.googlesource.com/21349
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Kevin Millikin <kmillikin@google.com>
Also, use more descriptive "redirecting_factory" instead of "factory"
in the textual representation of RedirectingFactoryConstructors.
Bug:
Change-Id: Ib01e21107b86e55a10721dde551e802ef3230c80
Reviewed-on: https://dart-review.googlesource.com/24400
Reviewed-by: Peter von der Ahé <ahe@google.com>
Commit-Queue: Dmitry Stefantsov <dmitryas@google.com>
We change the type of FileUriNode.fileUri from String to Uri, which in principle
doesn't change the binary format. However, we did notice that LibraryParts
weren't serialized as specified in binary.md, so we also fixed that.
Since fileUris are stored as strings in a separate table, Uri.parse is only called
once per unique URI.
Fasta only uses relativizeUri when printing diagnostics, and URIs stored in
expectation files (golden files) are relativized using String.replaceAll.
Change-Id: Ib2dc1b80c03a0cdaf84e48b8b3ba73b16bdf8a40
Reviewed-on: https://dart-review.googlesource.com/25421
Commit-Queue: Peter von der Ahé <ahe@google.com>
Reviewed-by: Jens Johansen <jensj@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Assert initializers in Dart may be compiled directly to this form of initializer,
rather than through local initializers as is done now.
Bug:
Change-Id: Ia149ea3d1df5d1dc18be5636801604ffaf7ca7d8
Reviewed-on: https://dart-review.googlesource.com/14760
Commit-Queue: Samir Jindel <sjindel@google.com>
Reviewed-by: Kevin Millikin <kmillikin@google.com>
New type of AST nodes RedirectingFactoryConstructor is added to Kernel.
The goal is to keep the information about redirecting factory
constructors in the class for the linking phase.
Change-Id: I7477c617fa7fd4935ceb23098ec7c056d1f286ca
Reviewed-on: https://dart-review.googlesource.com/14740
Commit-Queue: Dmitry Stefantsov <dmitryas@google.com>
Reviewed-by: Peter von der Ahé <ahe@google.com>
This fixes some incorrect asserts that were breaking the debug bots.
The original revision is available in Patchset 1.
This reverts commit 26735519cb.
Bug:
Change-Id: Ifa599b7bff752dec4c505e10fd6db206e1abd977
Reviewed-on: https://dart-review.googlesource.com/23820
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Commit-Queue: Samir Jindel <sjindel@google.com>
This reverts commit f13f772bb2.
Reason for revert: dartk(p)-strong debug mode is completely broken
because we convert int values non-representable as Smi to Smi, which
triggers that assert. The code that does tagging checks that
Untag(Tag(x)) == x, however for our purposes this identity does not
need to hold because we only care about lower bits and ignore the sign.
Reverting to restore green-ness of DEBUG builds.
TBR=sjindel@google.com
Bug:
Change-Id: Id436cbe000d6dec8db3469070ed531327cc82d89
Reviewed-on: https://dart-review.googlesource.com/23661
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
This CL adds the bare minimum of source map generation for the kernel
pipeline in DDC.
It additionally introduces a testing framework that compiles dart files
with DDC (with or without kernel), steps through it via D8 and compares
the positions stopped at to the expected stop positions.
Bug:
Change-Id: Ie9e06164d8e51c973b83c46a8472e044876e4317
Reviewed-on: https://dart-review.googlesource.com/20662
Reviewed-by: Vijay Menon <vsm@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Commit-Queue: Jens Johansen <jensj@google.com>
The introduced "constants" transformation can evaluate constant expressions. The
original use-sites of constant expressions are replaced by a new [ConstantExpression]
node, which points to a subclass of a new [Constant] class hierarchy. Constant
[Field]s and [VariableDeclarations]s will be removed, since all use-sites are
re-written.
The [Constant] class hierarchy is, similarly to the [DartType] class hierarchy, not
part of the AST tree (also has no parent pointer). The constants form a
DAG (directed acyclic graph).
There is no canonicalization requirement of the [Constant] objects referenced by the
AST (via [ConstantExpression]). Although it is beneficial to canonicalize them during
construction, since it reduces time spent in operator==/hashCode.
This CL furthermore adds support for a constant table in the binary format. Similarly
to [String]s, we canonicalize the constants before writing the table to the binary.
The constant table entries in the binary are written in a post-order way, to ensure
easy construction on the backend side.
The text format will be augmented with a "constants { ... }" section at the end,
which lists the constants in the same order as in the binary format.
The transformation can be used by those backends who choose to do so. It is not
enabled by default atm. It should therefore not affect analyzer, fasta or other
components.
Change-Id: I57cd9624fedcf537ab6870db76246149647bed21
Reviewed-on: https://dart-review.googlesource.com/14382
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Kevin Millikin <kmillikin@google.com>
Dart2JS and the VM prefer for Enum names to be stored inline in the Enum
object to avoid having the static array of all Enum values. A base class
for Enums is provided to avoid repeating the common fields and accessors
between Enum definitions.
Bug:
Change-Id: I783f863015b45f13317fda06e627d14844fe2ddf
Reviewed-on: https://dart-review.googlesource.com/16526
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Peter von der Ahé <ahe@google.com>
Previously lazy loading was done in Procedure by lazy loading functionNode,
now lazy loading is done (only through Procedure) in the functionNode by
lazy loading the body.
Bug:
Change-Id: I25cc86d038123ed4992162b65aa95781ea2c56e8
Reviewed-on: https://dart-review.googlesource.com/15560
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Peter von der Ahé <ahe@google.com>
Before: mixin application classes could not have methods of their
own.
After: type inference will sometimes insert forwarding stubs in mixin
application classes. In the mixin elimination transformation, these
forwarding stubs are replaced with the methods of the mixin class if
they have the same name, but the parameter flags from the forwarding
stub are retained. The other forwarding stubs are left as methods of
the class.
Change-Id: I5ee89d6b1fc83194df82009c2800b54ce856e8c5
Reviewed-on: https://dart-review.googlesource.com/15887
Reviewed-by: Paul Berry <paulberry@google.com>
Commit-Queue: Kevin Millikin <kmillikin@google.com>
Since 'DartType's overload equality with a structural comparison, we cannot
store metadata for them in a 'Map', as is done for 'TreeNode's. Since there is
no use-case yet for storing metadata on types, we remove this ability and the
restrict the metadata test.
Bug:
Change-Id: I825f55a5fd48da2c615b3154f909dd666baf5a33
Reviewed-on: https://dart-review.googlesource.com/14640
Commit-Queue: Samir Jindel <sjindel@google.com>
Reviewed-by: Kevin Millikin <kmillikin@google.com>
This flag indicates when a procedure's return type makes contravariant
use of a class type parameter. The front end will have to insert "as"
checks at any call sites that refer to such a procedure as their
interface target. Placing the flag on the procedure will allow the
front end to determine whether the check is needed once, at the same
time as it's determining the need for covariant parameter checks,
rather than when compiling individual call sites.
Once this lands I will follow up with CLs that cause the front end to
set the flag appropriately, and to generate the necessary "as" checks.
Change-Id: I989fc702bc233384eb5ea8cd630c8efd384ab248
Reviewed-on: https://dart-review.googlesource.com/14365
Reviewed-by: Samir Jindel <sjindel@google.com>
Commit-Queue: Paul Berry <paulberry@google.com>
Devirtualization optimization now adds metadata to kernel AST instead
of transforming nodes to Direct* ones. The direct call metadata
provides information about checking receiver for null, while
Direct* kernel nodes do not support null checking.
VM's kernel binary loader is extended to extract arbitrary metadata
from kernel binaries and keep it for flow graph builder.
Kernel flow graph builder is extended to take direct call metadata
into account and generate CheckNull/StaticCall instructions
for devirtualized PropertyGet, PropertySet and MethodInvocation nodes.
Issue: https://github.com/dart-lang/sdk/issues/30480
Change-Id: I57f56fbf4a8981d33b1571c0d93105cf8ca71d76
Reviewed-on: https://dart-review.googlesource.com/12260
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
This section contains a linear mapping between offsets of serialized nodes
and associated opaque binary metadata.
Note: this CL does not yet update C++ reader and only implements metadata in Kernel package.
C++ implementation will be updated if we agree that format seems flexible enough.
Bug:
Change-Id: Id433458afc6c2ea76c72f6a1901b9dc55b8f1696
Reviewed-on: https://dart-review.googlesource.com/9340
Reviewed-by: Jens Johansen <jensj@google.com>
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
This adds more indexes to the kernel format so we know where classes
and procedures starts and stops. This allows for more random access.
E.g. one could now read the program index and jump directly to
library $i_1$, then read the library index and jump directly to class $i_2$,
read the class index and jump directly to procedure $i_3$.
The utilization (in this CL) is to not (always) read the procedure body
up front when loading kernel code on the dart side (ast_from_binary).
The observation is that - when running through the VM - almost none
of the bodies from the platform file are actually used.
This lowers the start-up cost which is noticeable for small programs
(e.g. hello world, or tests).
In this CL this is only done on the dart side and not on the C++ side,
that's for another CL.
Startup time:
dart2js: -1.84253% +/- 1.22157%
hello world: -11.1188% +/- 5.57892%
Running "time python tools/test.py -m release -cdartk language -j6":
real: -11.72% +/- 0.35%
user: -14.59% +/- 0.24%
sys: -12.71% +/- 0.61%
File size change (compiling with fasta to dill file incl. platform):
hello world: 0.88% (35,934 bytes).
dart2js: 0.97% (200,967 bytes).
Change-Id: I1f0ec121bc75bb17f11d3fade03da9815037d0bb
Reviewed-on: https://dart-review.googlesource.com/5262
Reviewed-by: Kevin Millikin <kmillikin@google.com>
Before: ownership of some or all of the libraries from one Kernel
program (P1) would be transferred to another program (P2). All the
canonical names in P1 would be unbound from their references and the
canonical names would eventually be recreated for the libraries that
were transferred.
After: when ownership of a library is transferred, the ownership of
the canonical name subtree rooted at the library's name is also
transferred. This allows the 1:1 relationship between Canonicalname
and Reference to be maintained which will enable lazy deserialization
of procedure bodies (because the mapping from CanonicalNames to
References in the corresponding link table will be persistent).
Change-Id: I98f975d6ba5804f975c30528a484756b39f09d2a
Reviewed-on: https://dart-review.googlesource.com/7549
Commit-Queue: Kevin Millikin <kmillikin@google.com>
Reviewed-by: Peter von der Ahé <ahe@google.com>
Reviewed-by: Jens Johansen <jensj@google.com>
This reverts commit 9a8621b60a.
Revert "Rework getElement() in resynthesizer."
This reverts commit e4fa080f69.
Revert "Create (empty) initializers for parameters resynthesized from Kernel."
This reverts commit 8df6c79b9d.
Revert "Run NonErrorResolverTest in strong mode. Extract not strong tests."
This reverts commit 9bdda4b1d3.
Revert "Move TypeProvider creation into KernelResynthesizer and create loadLibrary functions."
This reverts commit c59eaf1788.
Revert "Return SimpleIdentifier or PrefixedIdentifier from _buildIdentifier()."
This reverts commit 6d0515f9ca.
Change-Id: I1099ca715ce6287ab56808b7cc3abe0589e939c1
Reviewed-on: https://dart-review.googlesource.com/7550
Reviewed-by: Peter von der Ahé <ahe@google.com>
Instead of using enums, we use booleans, and we change the terminology
as follows:
FormalSafety.semiSafe -> isGenericCovariantImpl
InterfaceSafety.semiTyped -> isGenericCovariantInterface
(The enum value FormalSafety.unsafe turned out to be redundant with
isCovariant, so it is no longer needed).
Similarly, the annotations in the front end tests are updated as follows:
@checkFormal=unsafe -> @covariance=explicit
@checkFormal=semiSafe -> @covariance=genericImpl
@checkInterface=semiTyped -> @covariance=genericInterface
Change-Id: Iafc0c5d3fc4e7608a2b8c52d8c29f293d9219995
Reviewed-on: https://dart-review.googlesource.com/5540
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Summary:
We use a modest set of annotations in ast.dart to describe how the Kernel AST
should be converted into Coq definitions.
We define a Kernel transformation that converts the kernel tree of ast.dart into
a valid Coq file containing the corresponding definitions.
Currently generating the Coq file is not done in the build system because
compiling it requires having Coq installed, and I don't want to introduce a
depedency on Coq into the build system.
Some parts of the AST are not represented because they don't significantly
contribute to the typing semantics:
- asserts
- typedefs
- most literals/basic types (excl. bool, which is needed for "is" tests)
- switch
- for-in
- parts
- yield/await
Test Plan:
Ran the output KernelSyntax.v file through "coqc".
Change-Id: Ic573163a017eaaf3759b741b9eec5ce3ce19225c
Reviewed-on: https://dart-review.googlesource.com/2960
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Commit-Queue: Dmitry Stefantsov <dmitryas@google.com>
Paul Berry