If the left-hand side of the store is an allocation and no GC-triggering
instructions have been executed since, it is safe to elide the store barrier.
This gives a 1.4% code size reduction on Flutter Gallery ARM32.
Change-Id: Ib7227d3ef9d798d5e30f238f3f789f9a2e637d6a
Cq-Include-Trybots: luci.dart.try: vm-kernel-optcounter-threshold-linux-release-x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-linux-release-simarm-try,vm-kernel-precomp-linux-release-simarm64-try,vm-kernel-precomp-linux-release-x64-try,vm-kernel-precomp-win-release-x64-try
Reviewed-on: https://dart-review.googlesource.com/64687
Commit-Queue: Samir Jindel <sjindel@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
This CL adds support to build.py and test.py for building/testing
a VM with the interpreter on x64, e.g.:
$ ./tools/gn.py -m release -a x64 --bytecode
$ ./tools/build.py -m release -a x64 --bytecode runtime
$ ./tools/test.py -m release -a x64 -r vm -c dartkb language_2
Change-Id: I956d23790636609d4a2e71129481fcbd7afef9a0
Reviewed-on: https://dart-review.googlesource.com/65206
Commit-Queue: Zach Anderson <zra@google.com>
Reviewed-by: Régis Crelier <regis@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
* Super tear-offs: 'super.foo' where foo() is a method.
* Super calls of abstract members (useful with super-mixins).
Change-Id: I373b11c9773c7535e703cdc4e1bb9e632eef8dd2
Reviewed-on: https://dart-review.googlesource.com/64980
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Rationale:
The previous change to avoid speculation altogether
in AOT strong mode (to improve typed data performance)
was a bit too conservative. We only need to avoid
speculation that introduces deopting checks, not ones
with a fast/slow path where the fast path is very likely.
In the long run, better analysis may help even more.
Performance impact (restores prior drop):
Meteor +40%
JsonParseCustomReviver + 6%
https://github.com/dart-lang/sdk/issues/33656
Change-Id: I1735d8e642285cb2df538fc49468cf64a99d7f72
Reviewed-on: https://dart-review.googlesource.com/65383
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Commit-Queue: Aart Bik <ajcbik@google.com>
In certain cases StreamingFlowGraphBuilder was used not for building
flow graph, but as an advanced kernel reader. This CL extracts all such
functionality from StreamingFlowGraphBuilder and revises all such uses.
StreamingFlowGraphBuilder constructors without FlowGraphBuilder are
removed. After this CL StreamingFlowGraphBuilder is only used to build
flow graph, as intended.
Change-Id: I69b08e24d37f8f2f336bee85334af11be1639b24
Reviewed-on: https://dart-review.googlesource.com/64821
Reviewed-by: Régis Crelier <regis@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
This moves the location on which a missing semicolon error is reported,
making it easier for a user to understand and fix,
and fixing some of the statement completion tests.
Change-Id: I11b9de57e2b3104238e1edb801ad1cd02e9a63a2
Reviewed-on: https://dart-review.googlesource.com/64900
Commit-Queue: Dan Rubel <danrubel@google.com>
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
This enables other emdedders to reuse parts of the standalone embedder
implementation without depending too much on the implementations details.
As part of the change we also remove a dependency from DartUtils on
IsolateData - by removing dart:_builtin library caching. Lookup
of this library does not seem to be on hot path anymore in Kernel world.
Change-Id: Ia35b28886121828fad7a96f00bcbceff75e00ae8
Reviewed-on: https://dart-review.googlesource.com/64848
Reviewed-by: Zach Anderson <zra@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>
ThreadLocalData::RunDestructors is called even if
ThreadLocalData::InitOnce has not been run, which would result in a null
pointer dereference of thread_locals_. Check for this case, then return
if thread_locals_ is NULL.
Change-Id: Ic0ab12bf643aa112c72d144662f2a32c3f0888c5
Reviewed-on: https://dart-review.googlesource.com/65171
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Ben Konyi <bkonyi@google.com>
Previously we relegated this to the inliner which interfers with inlining
heuristics.
Additionally avoid emitting assert assignable when specializing assignments
on the receiver.
This improves the following microbenchmark by a factor of 3:
int sumList(List<A> l) {
var sum = 0;
for (var obj in l) { // this would generate AssertAssignable for
sum += obj.field; // _ListIterator._current
}
return sum;
}
Bug: https://github.com/dart-lang/sdk/issues/33257
Change-Id: Ib2fff8be7c953981bdf5967baf7fcd5f6f648dcf
Reviewed-on: https://dart-review.googlesource.com/64842
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Some embedders don't use main(...) as an entry point to their code but
still want to be able to reload the code.
Change-Id: I1aafe8b904bff911f383f27fb330f92981841bd9
Reviewed-on: https://dart-review.googlesource.com/64846
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
server is started.
When the incremental compiler is used it accumulates state that
increases the footprint of the process. This state is needed only
when the 'reload' or 'expression evaluation' functionality is used
in the debugger.
Currently in the VM we do not have a good way of detecting when the
debugger will be used as the vm service observatory functionality
can be turned on dynamically after the program has started.
This CL turns on the incremental compiler only when command line options
are used to start the observatory server. We could run into issues with
'expression evaluation' when the observatory is started dynamically after
the program is loaded.
Change-Id: I18c17698622071bca428018f7fdac1a84b0f195e
Reviewed-on: https://dart-review.googlesource.com/64667
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Siva Annamalai <asiva@google.com>
Remove accidental legacy test section from front_end bots.
Remove no-op --strong arg from test matrix.
Change-Id: Icafc7eeb3c25f5816596affeaf8f75a7328fb907
Reviewed-on: https://dart-review.googlesource.com/64520
Reviewed-by: Jonas Termansen <sortie@google.com>
This CL continues refactoring aimed at isolating StreamingFlowGraphBuilder.
StreamingFlowGraphBuilder dependency is removed from classes
* StreamingConstantEvaluator (it still depends on FlowGraphBuilder)
* ConstantHelper
* SimpleExpressionConverter
and several methods in object.cc.
StreamingConstantEvaluator and ConstantHelper are moved from
kernel_binary_flowgraph{.h, .cc} to a new source file
constant_evaluator{.h, .cc}. StreamingConstantEvaluator is renamed
to ConstantEvaluator.
KernelFingerprintHelper and KernelSourceFingerprintHelper are moved to
a new source file kernel_fingerprints{.h, .cc}.
Instances of kernel::FlowGraphBuilder no longer contain back reference
to a StreamingFlowGraphBuilder. In order to drop this circular dependency
TranslateFinallyFinalizers() is moved from FlowGraphBuilder to
StreamingFlowGraphBuilder.
Change-Id: Id550d22b3567dea9512328a900935bd6145a8107
Reviewed-on: https://dart-review.googlesource.com/64463
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Zach Anderson <zra@google.com>
Reviewed-by: Régis Crelier <regis@google.com>
Samir Jindel