Using strstr in a loop is O(n^2) with n being the length of the path,
whereas using strncmp is O(n*m) with n being the length of the path
and m is the length of the separator (which is always 1).
Effectively this turns the quadratic behavior linear.
Change-Id: If60d02c33eeca92ca2ff52e0df97d0bb80fe57e0
Reviewed-on: https://dart-review.googlesource.com/62144
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Commit-Queue: Jens Johansen <jensj@google.com>
Previously, if we didn't include the source code, we wrote the url as
null. This for instance made it impossible to step through mixed in code
(at least when mixed in from the sdk).
This CL includes all used urls. If there's no source, the source is empty,
but the VM then tries to find the proper source to be able to display it
(e.g. the VM already has the sdk source).
This CL further more adds a service test that tests that we can actually
step into mixin in code from the sdk.
Change-Id: Ied9569723e23928769ebc980410aed60be6eaa22
Reviewed-on: https://dart-review.googlesource.com/51621
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
This extends existing support for multiroot compilation from frontend server to kernel service.
Bug: dartbug.com/33508
Change-Id: I76e49038765793b4d683869ab812dde5e6baf6c4
Reviewed-on: https://dart-review.googlesource.com/61982
Commit-Queue: Alexander Aprelev <aam@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Siva Annamalai <asiva@google.com>
It should expand past abstract classes if that allows to merge
two consequtive ranges with the same target into one.
In Dart 2 mode cid ranges are often interrupted by
abstract classes introduced by mixin transformation.
This change allows to expand ranges past those classes and
merge consequtive ranges that have the same target.
Change-Id: Ic0f4fa956d989609bebbe6f8d275491c562aa492
Reviewed-on: https://dart-review.googlesource.com/61929
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
This forwarders are used at dynamic call-sites and perform type checking
for all non-generic-covariant arguments. This allows to skip the same
type checks in the actual method body.
This yield on average 10% improvement in performance across the body of
benchmarks including dart2js compilation times.
Bug: https://github.com/dart-lang/sdk/issues/33257
Change-Id: If3fc94a2e0a6f496ec0633f0b379d053a54a40ca
Reviewed-on: https://dart-review.googlesource.com/61244
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
GN not_needed functions now checks whether the variable exists and
invoking not_needed on non-existent variable is considered an error.
Change-Id: I45bcb0c06228920d41db3482a0e50eae3b26eb0d
Reviewed-on: https://dart-review.googlesource.com/62022
Commit-Queue: Zach Anderson <zra@google.com>
Reviewed-by: Zach Anderson <zra@google.com>
Type canonicalization is deferred between in may involve cycles. Instances are canonicalized eagerly, but their type arguments are not necessarily canonical yet, which can lead to incorrect canonicalization of the instance.
The work around is to include the most popular type arguments in the serializer's set of base objects, bypassing deferred canonicalization. Other type arguments will continue to fail.
Bug: https://github.com/dart-lang/sdk/issues/33430
Change-Id: Ia992b3ebc2974b54acb5c88b3e1d836f6ec1f1b8
Reviewed-on: https://dart-review.googlesource.com/61721
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Siva Annamalai <asiva@google.com>
Prior to this change we only had fileOffset which points to the name.
This CL adds a field - startFileOffset - that points to the start
(e.g. 'static', 'factory', the return type or any presiding annotation
(including '@')), as well as fixing `Function::GetSource` in the VM to
fix a crash when using mirrors to ask for the source of a function or
constructor.
The field is added to procedures, constructors and classes.
The latter changes the location of classes with annotations to be
the position of the annotation. This is on-par with --no-preview-dart-2.
The change in regards to procedures and constructors mean, that both
the location and the source (from .location and .source on a
MethodMirror) will change to include any annotations. This is a
different behavior than --no-preview-dart-2.
Closes#33271.
Change-Id: I90f1232c5ec2d01e60e0bab070d44c37232b2730
Reviewed-on: https://dart-review.googlesource.com/60560
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Kevin Millikin <kmillikin@google.com>
Flutter and Fuchsia's dart_runner include an internal dart:io header
file to get at Crypto::GetRandomBytes. The public header is
embedded_dart_io.h, so this CL exposes Crypto::GetRandomBytes there
instead.
Change-Id: I1230009281b6d1be7a8071db63483b03805012c1
Reviewed-on: https://dart-review.googlesource.com/60942
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Zach Anderson <zra@google.com>
This includes argument type checks and implicit type checks inserted
by front-end.
Also, lookup of getter functions is fixed for StaticICData constant
pool entry to include non-static getters (StaticICData is used for
all kinds of direct calls including super calls).
Change-Id: Ic265ea6a7fca2bfcc9a96e4ede268ec8e693ff41
Reviewed-on: https://dart-review.googlesource.com/60822
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
- make Dart2 the default option for the command line VM
- add option --no-preview-dart-2 as a fallback option to run dart1
- change test scripts to use the executable dart for testing dart2 mode instead of
pkg/vm/tool/dart2
- adjust numerous build and test configurations
Change-Id: Id813fa5b71a89c7ec9335d3f6e83cfc9f35f86e7
Reviewed-on: https://dart-review.googlesource.com/58240
Commit-Queue: Siva Annamalai <asiva@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
Reviewed-by: Nate Bosch <nbosch@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Reviewed-by: Vijay Menon <vsm@google.com>
When the slow path code of StackOverflowInstr is calling out to runtime
and the runtime causes a lazy-deopt, the lazy deopt stub will treat the value in the
return-value-register as GC-safe and the value will be visited during GCs.
This CL changes the call-to-runtime-stub to always put 0 into the
return-value-register.
This should fix the flaky vm-linux-debug-x64-reload-be builder.
Change-Id: Ibea3630b8b9fa5de2b96134725df0017c09282bd
Reviewed-on: https://dart-review.googlesource.com/60661
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Rationale:
With limited integers, signed/unsigned 64-bit int typed
data is just a bit pattern, no need to sign/zero extend
these into bigger ints on load. This enables more
intrinsification of indexed stores/loads.
Note:
Still TBD, inline these indexed operations too.
Performance:
About 10x improvement on micro benchmarks.
https://github.com/dart-lang/sdk/issues/33205
Change-Id: I640c324a7d91e57fb4edc025e0dd456ad34fe906
Reviewed-on: https://dart-review.googlesource.com/60403
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Commit-Queue: Aart Bik <ajcbik@google.com>
The stub code for calling into the runtime is now responsible for saving any
live registers. Since it doesn't know which registers are live (it's shared
across many safepoints), it saves all the registers. The stackmaps and
environments for safepoints which call this stub are extended to cover the stack
slots in the stub's frame which correspond to registers which are actually live
at the safepoint.
Currently this is only supported in precompiled X64 for the `CheckNull`
slow-path. By creating a separate stub for the CheckNull slow path we are able
to eliminate the size overhead of preparing arguments for the runtime call stub,
and reduce the slow-path size on X64 to 1 instruction.
# Test Plan
The stackmap for a safepoint in the `CheckNull` slowpath is only used when
handling the exception causes a GC, which is extremely unlikely. To induce this,
we add a flag to force this behavior in debug-mode and a test which exercises
this. The rest of the changes inherit existing coverage.
Change-Id: I3d8f2a7c3560c432599344d7420d42ddbee7a89d
Reviewed-on: https://dart-review.googlesource.com/59660
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Commit-Queue: Samir Jindel <sjindel@google.com>
We previously used liblaunchpad.so, which will be removed from the
Fuchsia SDK.
Change-Id: I5992d195dc53549c449ae21b3b201bc1dade519a
Reviewed-on: https://dart-review.googlesource.com/60147
Reviewed-by: Zach Anderson <zra@google.com>
The old zx_task_suspend is being replaced with zx_task_suspend_token
which eliminates the possibility that suspends can get leaked due to
crashes.
Change-Id: Ib7df2494a013b899c98d03d9ceeb0cc9de2ea6b4
Reviewed-on: https://dart-review.googlesource.com/60204
Reviewed-by: Zach Anderson <zra@google.com>
Jens Johansen