Rationale:
Loop analysis did not take outer indices used as bounds
(triangular loops) into account to enhance analysis. This
left some obvious BCE optimizations on the table (mainly AOT).
Observed improvements (performance and code size):
About 5-15% performance on golem benchmarks:
mainly armv7, and TypedData*Bench
Minor overall code size reduction on flutter gallery (arm32,arm64)
Comparing ./orig32.json (old) to ./new32.json (new)
Old : 6614912 bytes.
New : 6600336 bytes.
Change: -14576 bytes.
Comparing ./orig64.json (old) to ./new64.json (new)
Old : 6459216 bytes.
New : 6458736 bytes.
Change: -480 bytes.
Similar on velocity_tracker_bench (arm32,arm64)
Comparing orig32.json (old) to new32.json (new)
Old : 804280 bytes.
New : 794552 bytes.
Change: -9728 bytes.
Comparing orig64.json (old) to new64.json (new)
Old : 705520 bytes.
New : 705312 bytes.
Change: -208 bytes.
Change-Id: Ifc3b3a378ae6fd98743c48944a86a9e90ce4da5c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/117200
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Aart Bik <ajcbik@google.com>
Setting the `enableTimelineLogging` property of `HttpClient` to true results in
timeline events being created for HTTP connections and HTTP requests.
Timeline events contain general connection information, including:
- Request type
- Status code
- Request / response headers
- Cookies
- Non-sensitive proxy information
- Relevent error messages for failed connections
Change-Id: Ibe16a312ab5398c9ae886ea07bea5ca70b63e440
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/123540
Commit-Queue: Ben Konyi <bkonyi@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
This is practically a copy of the change in
https://dart-review.googlesource.com/c/sdk/+/118040 but applied to the non-nnbd
sdk.
Even though there is no intent to run the non-nnbd sdk with the non-nullable
experiment, we need to add this annotation because of how we
intend to gradually start testing NNBD. The libraries.json under
sdk_nnbd is allowed to point to libraries under the non-nnbd sdk in order to
temporarily build without errors until all patch files are migrated and all CFE
issues are addressed.
Change-Id: I53c1123a8d86c10695832a8a0ad35adb7b4d92fd
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/125181
Commit-Queue: Sigmund Cherem <sigmund@google.com>
Reviewed-by: Bob Nystrom <rnystrom@google.com>
This is some preparation for the NNBD migration where the existing downcasts and
possible nullable accesses will be errors.
- Downcasts have been replaced with covariant parameters.
- Local variables have either been declared with a specific type or given
initial values so that they can become non-nullable in the future.
Change-Id: Ie871095ee26771833318d1dfce2b5986afaf8c69
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/125227
Commit-Queue: Nicholas Shahan <nshahan@google.com>
Reviewed-by: Stephen Adams <sra@google.com>
Change Expression.getStaticType to take a StaticTypeContext instead
of a TypeEnvironment.
The StaticTypeContext provides access to the TypeEnvironment and the
current 'this type' as well as determining the nullability state of the
enclosing library.
This change is needed to support nnbd types for getStaticType and also
serves as a step towards supporting caching during static type
computations to avoid repeated computations of the same (complex)
expressions.
Change-Id: Ied974dff7f6f7c3c8f262aa80c8dea5c674662f7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/124683
Commit-Queue: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
Walk through http headers class. Since http header uses case-insensitive headers, noFolding() implicitly assumes field name is lower-cases. It is used to compare to lower-cases field name. Validate the field name before it is stored and also add a test case for noFolding().
Change-Id: I58f8a0ed0d366281e1e7a8c60fd46ff81c8ee796
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/121773
Reviewed-by: Lasse R.H. Nielsen <lrn@google.com>
Commit-Queue: Zichang Guo <zichangguo@google.com>
Adds tests for the change to make extension members accessible even
for prefixed imports. Also tests that it is an error to import a
library with extensions as deferred without hiding the extensions.
Change-Id: I3a81c560694d34c8adbb4cc86ca9e6b8a129ae56
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/124589
Commit-Queue: Leaf Petersen <leafp@google.com>
Reviewed-by: Bob Nystrom <rnystrom@google.com>
* Treat the assertion condition offset as a character offset in the file.
* Allow unrecognized characters to be replaced by a placeholder character. This
is unrelated to the fix but is just a precautionary measure.
Fixed: 39271
Change-Id: I4871ea41d3a46d26ecac5047265a1dbc1c889350
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/124602
Reviewed-by: Vijay Menon <vsm@google.com>
Commit-Queue: Nicholas Shahan <nshahan@google.com>
Crashes come from assertion in ReturnTokens() and new_mask() in Eventhandler.
Another issue is when multiple serversockets bind to the same address, Socket will be reused to all Dart_Ports. But Socket didn't keep track of corresponding Dart Port.
When one of isolates is killed, finalizer wakes up and close most recent Dart Port that sends data.
After this cl, Socket may not be reused by different Dart Sockets. All Dart socket will has its own Socket object. But Sockets can have same fd.
This will guarantee finalizer will close right Dart Port.
Bug: https://github.com/dart-lang/sdk/issues/36106
Change-Id: Ib4620ada5f120ffda719052297009280c73b4315
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/122490
Commit-Queue: Zichang Guo <zichangguo@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
I tested it locally by updating `SharedOptions` to include not only
`--enable-experiment=non-nullable`, but also the forced path to NNBD
SDK: `--dart-sdk=/Users/scheglov/Applications/dart-sdk-NNBD`.
This will fail for now, I will accept current bot failures.
Change-Id: I72c9b46049de6cd25eddebd43d5c73c2fc9d7825
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/124168
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Reviewed-by: Paul Berry <paulberry@google.com>
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
On most apps, `==` is a very common invocation that adds lots of edges to
our global inference graph. It appears that for the most part we don't
learn much from it and that we save a considerable amount of space and
time durning global inference if we model them differently.
The amount of space varies a lot by application. Some large internal apps
show about 200K edges removed, other large apps show an incredibly large number
(1.3 M edges!)
Change-Id: I5168978f922c4d74adfae2de7fe69d56ff85ade0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/123980
Reviewed-by: Stephen Adams <sra@google.com>
Commit-Queue: Sigmund Cherem <sigmund@google.com>
- Cache the Rti in a property on the constructor.
- Put the dodgy closure logic behind the cache to move the _isClosure
test off the fast path.
- Allow different closure.runtimeType.toString() results. The old result is not
worth preserving because it shows a 'type' that does not otherwise exist. The
actual closure.toString() is still informative.
Change-Id: I7f30e5975ce289fa6b85a22c65f76e80055ef548
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/124021
Commit-Queue: Stephen Adams <sra@google.com>
Reviewed-by: Mayank Patke <fishythefish@google.com>
When an explicitly defined type variable is used in an incorrect
variance position in a method (whether in the return or the
parameters), an error is emitted.
Change-Id: I7e49687579bb2ce6e293b052b657b98741cb04f8
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/122740
Commit-Queue: Kallen Tu <kallentu@google.com>
Reviewed-by: Leaf Petersen <leafp@google.com>
Reviewed-by: Dmitry Stefantsov <dmitryas@google.com>
This moves the five test suites for flow analysis along with the
constants test suite.
Note that a few files have formatting errors. I'll fix those in a
follow-up CL.
Change-Id: Ie9bba74c7d91e49ac6c9d3c64a96be007b6a94c6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/123680
Reviewed-by: Johnni Winther <johnniwinther@google.com>
In weak mode when a subtype check fails it is performed again with more lenient
rules. If the second check passes a warning is printed to the console and it is
allowed to pass. If the second check fails it is treated as a failure.
- Add a method to set the runtime mode.
- Update test expectations for more permissive subtype checks.
Issue: #38128
Change-Id: I7d55bfffad16077c50b6b2c3bf6df8367e6f7785
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/123300
Commit-Queue: Nicholas Shahan <nshahan@google.com>
Reviewed-by: Leaf Petersen <leafp@google.com>
Kallen Tu