The goal of this change is to make it possible to start iterating on nnbd tests
for DDC. This keeps the current philosophy of keeping NNBD and non-NNBD build
configurations separate, except that NNBD builds are allowed to consume library
sources from the non-nnbd sdk.
This change addresses the first set of errors that are encountered when trying
to build a fully NNBD configuration:
* CFE has issues with type promotion, for that reason we remove
`--enable-experiment=non-nullable` in vm build rules, and we use a smaller
training data when creating the dartdevc app-jit snapshot.
* We'd hit compile-time errors with nnbd libraries with inconsistent
patchfiles. To avoid that, the libarries.json points to the non-nnbd SDK
sources for most dart:* libraries.
Change-Id: Ie6226b3bd8a92b4a1632dd84a5db2f04238fd4f8
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/125080
Commit-Queue: Sigmund Cherem <sigmund@google.com>
Reviewed-by: Bob Nystrom <rnystrom@google.com>
--code-comments should be passed both at compile/training-time and run-time to get
comments in the disassembled instructions.
The required --disassemble-* flags need only be passed at run-time. Flow-graph printing
is not yet supported because we don't save flow-graph like assembly comments.
This functionality is excluded from product builds.
Change-Id: If35fbb08cff6eae40069f916ecec9c6f589c0cad
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/124989
Commit-Queue: Samir Jindel <sjindel@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
When we are writing a snapshot, canonicalize all entries within
CompressedStackMaps payloads. We do this by creating a global table
of stack map information (bit counts + bit payload) that we store
in the isolate object store, and then for each existing CSM, we
replace it with an alternate version that refers to the global table.
This gets back some of the canonicalization we lost when we moved from
individual StackMap objects to per-Code CompressedStackMaps objects.
Here, we also represent the global table as a CompressedStackMaps
object. This means that there are three types of CompressedStackMaps:
* The original version that directly contains all entry information.
* The version where each entry is just the PC offset delta and an
offset into the global table payload.
* A version representing the global table where the entries are like
the original version except they don't contain a PC offset delta.
-----
The impact on AOT snapshot size when compiling the Flutter Gallery
in release mode:
armv7: Total size -0.88% (Isolate RO: -5.05%, Isolate snapshot: +0.00%)
armv8: Total size -1.04% (Isolate RO: -5.28%, Isolate snapshot: +0.00%)
-----
Bug: https://github.com/dart-lang/sdk/issues/35274
Change-Id: I1ce0f8b3cc58e2f11584f3c218e0fdf8984b799b
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-linux-debug-simarm_x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/120667
Commit-Queue: Teagan Strickland <sstrickl@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Fix vm/cc/OldGC_Unsync to not change FLAG_marker_tasks while incremental marking is in progress.
Fix vm/cc/IterateReadOnly to not mark the heap as read-only while marking or sweeping are in progress.
Remove unnecessary WaitForGCTasks leftover from background finalization.
Bug: https://github.com/dart-lang/sdk/issues/39299
Change-Id: Ib3340e514b44230b9735b74b1f2012ca9b998d50
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/124824
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Siva Annamalai <asiva@google.com>
This reverts commit ea57b1e62c.
Reason for revert: Please see https://buganizer.corp.google.com/issues/144304690
Original change's description:
> [VM/nnbd] Pass nullability when creating Class::DeclarationType.
>
> Passing nullability rather than forcing kLegacy helps slightly reduce the number
> of Types in the VM and in snapshots.
> This allows to remove the kludge about declaration type of Null being kNullable.
> Also pass nullability when creating a simple type may help.
>
> Note that CFE is still producing super types and some interface types that are
> non-nullable, even with nnbd features disabled. But this should get fixed and
> further reduce the number of types in the snapshot.
>
> Change-Id: I397f00902026ee5bc91d36328f4156427702efdb
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/124480
> Commit-Queue: Régis Crelier <regis@google.com>
> Reviewed-by: Alexander Markov <alexmarkov@google.com>
TBR=rmacnak@google.com,alexmarkov@google.com,asiva@google.com,regis@google.com
# Not skipping CQ checks because original CL landed > 1 day ago.
Change-Id: Icae0a69cda6cc531bba4d5d12471e7267a277340
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/125102
Reviewed-by: Siva Annamalai <asiva@google.com>
Passing nullability rather than forcing kLegacy helps slightly reduce the number
of Types in the VM and in snapshots.
This allows to remove the kludge about declaration type of Null being kNullable.
Also pass nullability when creating a simple type may help.
Note that CFE is still producing super types and some interface types that are
non-nullable, even with nnbd features disabled. But this should get fixed and
further reduce the number of types in the snapshot.
Change-Id: I397f00902026ee5bc91d36328f4156427702efdb
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/124480
Commit-Queue: Régis Crelier <regis@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Right now a message handler is taking care of detecting idle timeouts
and notifying the isolate (or rather it's heap) that a compaction can
start.
Once we move the heap to the isolate group, we should only notify the
heap that we're idle if *all* isolates are idle. As a preparatory step
we move the idle timer functionality into it's own class and make the
isolate own it.
When the heap gets moved from isolate to isolate group, we'll also move
the idle time handler.
Issue https://github.com/dart-lang/sdk/issues/36097
Change-Id: If9b244baf0425ef343f909ee3a8a1147f966845b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/116200
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
This paves the way for removing the old constant evaluator from the VM,
by no longer supporting versions without front-end constant evaluation.
For the front-end test that tests old kernel versions on the newest VM,
the dill files for versions before 29 are deleted.
Version 29 is from 2019-08-16: eae781c73e
Change-Id: Icb472bffc764d6e37ed1349a0cb4ff281e0e1b21
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/123739
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Aske Simon Christensen <askesc@google.com>
VM creates Script objects with kKernelTag only, so this CL cleans up
all uses of script tags and Script::kind() along with code
which is no longer reachable.
Change-Id: Ia765e7757264aa614e18eddd16d21937f855c129
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/123889
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
This sets us up for migrating away from a dedicated timezone service
into a more general `fuchsia.intl.*`.
As a first step, let's use only one of the two equivalent FIDL service sets.
In fuchsia they are implemented by exactly the same handlers, so are equivalent
to the best of my knowledge.
Fixes#39174.
Change-Id: I229670bb96816af808a0cb14e6d2cba283f9ef62
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/123487
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Disabling the profiler will **not** release the sample buffer on Linux,
MacOS, and other platforms which utilize signals for profiling as
there's no way to ensure all signals have been receieved after the
thread interrupter has been shutdown.
Change-Id: Ifb3230fdb95e9bc9147cbd4b85d1a84e976ce119
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/123554
Commit-Queue: Ben Konyi <bkonyi@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Scripts loaded from kernel AST always have non-null line_starts
(line_starts could be zero-length if there are no line numbers).
Scripts loaded from bytecode can have null line_starts if line
numbers are not present, so Script::GetTokenLineUsingLineStarts is
fixed to handle this correctly.
Fixes https://github.com/dart-lang/sdk/issues/39168
Change-Id: I84b5e7ef804b07b3d35420eba5c17246264d8baa
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/123482
Reviewed-by: Régis Crelier <regis@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
--verify_gc_contains is roughly O(heap^2) and gives false errors in some cases involving remembered cards
--verify_on_transition takes over 30 minutes for even hello world
Change-Id: Idee7e535bb96b11f0fa620532debbd21ca9d7135
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/123329
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
The lower-case "value()" metrics getter can only be used to obtain
metrics which are explicitly set by the VM.
The metrics we expose also include ones which are computed on-the-fly.
Those have to be accessed via "Value()".
Change-Id: I283c3c7c660d47c383b880b4bff6357a4dba9c01
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/123252
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>
Sigmund Cherem