This reverts commit 80102c981b.
Reason for revert: b/186359854
Original change's description:
> [vm] Switch datastream Write/WriteUnsigned to (S)LEB128.
>
> This reduces the number of variable-length integer encodings in our
> database from 2 to 1, and chooses the more standard one.
>
> TEST=Existing tests, in particular any that involve snapshots.
>
> Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-asan-linux-release-x64-try,vm-kernel-precomp-dwarf-linux-product-x64-try,vm-kernel-precomp-msan-linux-release-x64-try,vm-kernel-precomp-ubsan-linux-release-x64-try,vm-kernel-precomp-tsan-linux-release-x64-try,vm-kernel-precomp-nnbd-linux-debug-x64-try,vm-kernel-precomp-nnbd-linux-debug-simarm_x64-try,vm-kernel-precomp-linux-debug-simarm64c-try,vm-kernel-precomp-linux-debug-simarm_x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-linux-debug-x64c-try,vm-kernel-precomp-linux-product-x64-try,vm-kernel-precomp-linux-release-x64-try
> Change-Id: Ia700158ac873ad32ac28c1027a669895961bc715
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196321
> Commit-Queue: Tess Strickland <sstrickl@google.com>
> Reviewed-by: Ryan Macnak <rmacnak@google.com>
> Reviewed-by: Martin Kustermann <kustermann@google.com>
# Not skipping CQ checks because original CL landed > 1 day ago.
Change-Id: Idf32bdd879cf8bb7407f6dae764312140ad6eeb2
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-asan-linux-release-x64-try,vm-kernel-precomp-dwarf-linux-product-x64-try,vm-kernel-precomp-msan-linux-release-x64-try,vm-kernel-precomp-ubsan-linux-release-x64-try,vm-kernel-precomp-tsan-linux-release-x64-try,vm-kernel-precomp-nnbd-linux-debug-x64-try,vm-kernel-precomp-nnbd-linux-debug-simarm_x64-try,vm-kernel-precomp-linux-debug-simarm64c-try,vm-kernel-precomp-linux-debug-simarm_x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-linux-debug-x64c-try,vm-kernel-precomp-linux-product-x64-try,vm-kernel-precomp-linux-release-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196920
Reviewed-by: Ivan Inozemtsev <iinozemtsev@google.com>
Commit-Queue: Ivan Inozemtsev <iinozemtsev@google.com>
Right now the vm/cc/CodeRelocator_* tests are written in a strange way
to work around the conservative assumptions the relocator makes.
A future CL will make the relocator insert tramppolines precisely when
they are needed (not conservatively), which will allow writing precise
tests.
TEST=Fixes ARM64 vm/cc/CodeRelocator_* tests
Change-Id: I68f9bcce29f42a2264608f867f177e8f557804fb
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196666
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>
The tests generate & run relocated instructions. On ARM64 our macro
assembler uses X15 as stack pointer instead of the normal sp.
-> There was a missing RestoreCSP() in the generation of the call
instructions.
-> It's not an issue for running the test in simulator if CSP is wrong
when returning, though it is for HW.
Adding RestoreCSP() would require the code to be larger, so instead we
use lower level assembly instructions that operate on the normal ARM64
stack.
Closes https://github.com/dart-lang/sdk/issues/45807
TEST=Fixes vm/cc/RelocatinoTest_* on arm64 hw
Change-Id: I0c65e3d22897f536e39f0cf7e9af2be871051b0d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196498
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>
This reduces the number of variable-length integer encodings in our
database from 2 to 1, and chooses the more standard one.
TEST=Existing tests, in particular any that involve snapshots.
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-asan-linux-release-x64-try,vm-kernel-precomp-dwarf-linux-product-x64-try,vm-kernel-precomp-msan-linux-release-x64-try,vm-kernel-precomp-ubsan-linux-release-x64-try,vm-kernel-precomp-tsan-linux-release-x64-try,vm-kernel-precomp-nnbd-linux-debug-x64-try,vm-kernel-precomp-nnbd-linux-debug-simarm_x64-try,vm-kernel-precomp-linux-debug-simarm64c-try,vm-kernel-precomp-linux-debug-simarm_x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-linux-debug-x64c-try,vm-kernel-precomp-linux-product-x64-try,vm-kernel-precomp-linux-release-x64-try
Change-Id: Ia700158ac873ad32ac28c1027a669895961bc715
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196321
Commit-Queue: Tess Strickland <sstrickl@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
The following fields in Class objects
target_instance_size_in_words_
target_type_arguments_field_offset_in_words_
target_next_field_offset_in_words_
are only useful when cross-compiling.
This change removes these fields if DART_PRECOMPILER is not defined.
TEST=ci
Change-Id: I45e6e60ad6d0a738e2ac3afd45328209167393ff
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196222
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Previously, compiler::target::Foo::InstanceSize(intptr_t length)
definitions were hand-written and compiler::target::Foo::InstanceSize()
were often defined using the size of UntaggedFoo for array-like objects.
This results in an unnecessary code duplication and discrepancy
between Foo::InstanceSize() which returns 0 and
compiler::target::Foo::InstanceSize() which returns size of the header.
This change adds ARRAY_SIZEOF variant to runtime_offsets_list.h
and switches array-like objects to auto-generated InstanceSize methods.
Also, this change strengthens assertions around host and target
values of InstanceSize() and NextFieldOffset() being the same
unless DART_PRECOMPILER is defined (which may do cross-compilation).
Stronger assertions flushed out a few discrepancies between
runtime_api.h and object.h, which are also fixed in this change.
TEST=ci
Change-Id: I9f67c6a71b9300af5e656fdc70f6a3e341c1d029
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196345
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Tess Strickland <sstrickl@google.com>
Instead of depending on all canonical clusters being written first,
followed by all non-canonical clusters, mark whether a cluster is
canonical or not in its written form. This allows future changes to
interleave canonical and non-canonical clusters as needed.
TEST=Existing tests, as this is purely a refactoring.
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-dwarf-linux-product-x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-linux-debug-x64c-try,vm-kernel-precomp-nnbd-linux-debug-x64-try
Change-Id: I0ab835c262e061ffd3dd93be0c8f5358c9b51fc2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195994
Commit-Queue: Tess Strickland <sstrickl@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Fixes the case where the Image name and type was not written
to the v8 snapshot profile in non-precompiled mode.
Adds core-jit snapshot tests to the v8 snapshot profile writer test.
In core-jit and app-aot-elf modes, verify that all bytes in the
snapshot sections are accounted for in the profile.
Bug: https://github.com/dart-lang/sdk/issues/45787
TEST=vm/dart{,_2}/v8_snapshot_profile_writer_test
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-linux-product-x64-try,vm-kernel-precomp-linux-release-x64-try,vm-kernel-precomp-linux-debug-x64-try
Change-Id: I88be309cdea6293d768e2fa458492387d70fde22
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196323
Commit-Queue: Tess Strickland <sstrickl@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Daco Harkes <dacoharkes@google.com>
There is a synthetic try/catch within a try/finally block.
When trying to assess whether an exception is caught, the debugger
should skip such generated try/catch blocks. Otherwise, it considers
that try/finally actually handles the exception, which is wrong.
Fixes https://github.com/dart-lang/sdk/issues/45684
TEST=runtime/observatory{,_2}/tests/service{,_2}/regress_45684_test.dart
Change-Id: I60e8837204cf97ee1ab02ffd03364e7f69857004
Fixed: 45684
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196124
Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
Reviewed-by: Ben Konyi <bkonyi@google.com>
objects
It's possible for scripts to appear in multiple components provided by
the front end in certain situations (e.g., mixin applications in
different libraries). Previously when trying to set a breakpoint, if
multiple scripts were found matching the target URI the debugger would
give up and not set the breakpoint.
This change allows for multiple Scripts to be associated with a
BreakpointLocation.
Fixes https://github.com/flutter/flutter/issues/66832
TEST=runtime/observatory_2/tests/service_2/sdk_break_with_mixin_test.dart
Change-Id: I935721f4753675a9a2051a71cc1720e590f8d4f6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195664
Commit-Queue: Ben Konyi <bkonyi@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
This is a reland of 2852408881
Original change's description:
> [vm] Reduce size of Class objects in AOT and PRODUCT modes
>
> This change conditionally removes certain fields from Class objects
> in AOT and PRODUCT modes.
>
> Flutter gallery in release-sizeopt mode:
> Snapshot size -0.47% (arm64), -0.44% (arm)
> Heap size of snapshot objects -4.1% (arm64), -4.3% (arm)
>
> On a large Flutter application compiled in --dwarf-stack-traces mode:
> Heap size of Class objects -26%
> Heap size of all snapshot objects -3.6%
>
> TEST=ci
> Issue: https://github.com/dart-lang/sdk/issues/44020
> Change-Id: I795c625b71558cd2f336f92fc326c36fd339cd4b
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195700
> Commit-Queue: Alexander Markov <alexmarkov@google.com>
> Reviewed-by: Ryan Macnak <rmacnak@google.com>
TEST=ci
Change-Id: Ib473a959a2c610b7a0e6f4000b2101e5256c6119
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/196103
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
This is a reland of 5909fd111d
Does a large refactoring on the V8 snapshot profile writer
to clean things up, add more debugging support, and to fix
the problems that surfaced during the original landing.
Other changes:
Changes Serializer::CreateArtificialNodeIfNeeded() to create
artificial nodes for Code objects and immutable arrays.
Fixes CodeSerializationCluster::Trace() to only push needed parts of
discarded code objects, instead of tracing them like full code objects.
Adds test cases to v8_snapshot_profile_writer_test that exercise
the following situations (both separately and together):
* Non-symbolic stack traces are enabled and code and function objects
are dropped when not needed at runtime.
* Creation of the dispatch table is disabled.
TEST=vm/dart{,_2}/v8_snapshot_profile_writer_test
Original change's description:
> [vm] Fix V8 snapshot profile handling of the dispatch table.
>
> Fixes https://github.com/dart-lang/sdk/issues/45702.
>
> TEST=Tests listed in the issue above.
>
> Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-linux-debug-x64-try
> Change-Id: Ibf5e3ccf3828c01f9dda47de360314dabe8cb8a9
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195272
> Reviewed-by: Daco Harkes <dacoharkes@google.com>
> Commit-Queue: Tess Strickland <sstrickl@google.com>
Change-Id: I8e7030267fe190079a8f68d00fe20bf7170e5719
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-linux-product-x64-try,vm-kernel-precomp-mac-release-simarm64-try,vm-kernel-precomp-linux-debug-x64c-try,vm-kernel-precomp-obfuscate-linux-release-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195513
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Commit-Queue: Tess Strickland <sstrickl@google.com>
This change conditionally removes certain fields from Class objects
in AOT and PRODUCT modes.
Flutter gallery in release-sizeopt mode:
Snapshot size -0.47% (arm64), -0.44% (arm)
Heap size of snapshot objects -4.1% (arm64), -4.3% (arm)
On a large Flutter application compiled in --dwarf-stack-traces mode:
Heap size of Class objects -26%
Heap size of all snapshot objects -3.6%
TEST=ci
Issue: https://github.com/dart-lang/sdk/issues/44020
Change-Id: I795c625b71558cd2f336f92fc326c36fd339cd4b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195700
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
In lightweight isolate mode if some isolate or background compiler decides
to deopt unboxed field, we need to bring to stop all other isolates
to prevent to-be-deoptimized code from running.
If isolates are not stopped they might continue running the code that
still assumes the field is unboxed(reusable mutable box), overwriting
(now immutable) boxed value.
Issue https://github.com/dart-lang/sdk/issues/36097
TEST=ci
Change-Id: I5d2492650b8aa00491a1bd6ba2a7fb4817460f14
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195662
Commit-Queue: Alexander Aprelev <aam@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
There was a missing check for whether a backwards call is out-of-range.
The CL also removes leftover code related to [max_offset_into_target_] -
which wasn't used. The intended use is already over approximated via
[max_instructions_size_].
The CL makes the pc-relative call/tail-call distances pluggable so a
newly added test can modify them for testing in-range/out-of-range
forward/backwards calls.
TEST=vm/cc/CodeRelocator_*
Fixes https://github.com/flutter/flutter/issues/80043
Change-Id: Id4bdb7176108b61235dafb7ffc125da4a2bf07fa
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195682
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
When materializing objects during deoptimization, their fields were
set using Instance::SetField. However, Instance::SetField updates
field guards and it is strict about not taking 'sentinel' value.
That caused assertion to fail when trying to materialize an instances
with late fields which were not initialized yet and have 'sentinel'
value.
Changed materialization to use a more low-level SetFieldAtOffset
in case of sentinel value.
TEST=runtime/tests/vm/dart/regress_45691_test.dart
Fixes https://github.com/dart-lang/sdk/issues/45691
Change-Id: If39a1e4f2fc0d0fe7f988a80c7a0073cafff28b0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195490
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
It is possible for 2 slots which correspond to different captured
variables to have the same offset, flags and name.
So Slot::Equals should also take the rest of the information into
account (static type) in order to prevent incorrect canonicalization
of Slot objects.
TEST=runtime/tests/vm/dart/regress_45631_test.dart
Fixes https://github.com/dart-lang/sdk/issues/45631
Change-Id: Ib64dc5b8a83f64efd06f4139949c637d7c6dd3a8
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195423
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Previously, compiler canonicalized Phi instructions which reference
only one value (modulo redefinitions):
v1 = Phi(v2, v2, ..., v2)
This change extends the canonicalization rule to also allow the Phi
to reference itself:
v1 = Phi(v2, v2, ...., v2, v1, ...., v1)
Such Phi instructions may occur in loops when local variable is not
mutated (remains the same on the back-edge).
TEST=ci
Change-Id: I2838c4307a6dd3067d52624db66487ba4682538c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195043
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
In the codebase, we have several different interfaces for equality
instance methods on a type T:
- bool Equals(const T&) const;
- bool Equals(const T*) const;
- bool Equals(T*) const;
This CL standardizes on `bool Equals(const T&) const;`, and adjusts any
related functions to match.
TEST=Existing test suites, as this is an internal refactoring.
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-linux-debug-x64-try
Change-Id: I2ebcf2b861732ce65c6f1c673b2df2a2c7f5dd4d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195071
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Commit-Queue: Tess Strickland <sstrickl@google.com>
`Dart_NewWeakPersistentHandle` and `Dart_NewFinalizableHandle` in
`dart_api.h` do no longer accept `Pointer`s and subtypes of `Struct`s
as values passed in to the `object` parameter.
Expandos no longer accept `Pointer`s and subtypes of `Struct`s
as values passed in to the `object` parameter.
Cleans up unused object_store->ffi_struct_class.
Reland 1: Allow importing `dart:ffi` from `dart:core` with
`--enable-ffi=false`.
Reland 2: Allow the new `_Compound` class to extend `NativeType`. (This
got triggered in this CL on the build because of the import
from `dart:core`.)
Closes: https://github.com/dart-lang/sdk/issues/45071
Breaking change: https://github.com/dart-lang/sdk/issues/45072
TEST=vm/cc/DartAPI_FinalizableHandleErrors
TEST=vm/cc/DartAPI_WeakPersistentHandleErrors
TEST=tests/ffi(_2)/expando_test.dart
Change-Id: I133278e16bd75cd2bb6234e7ddf042ffa0a54fd6
Cq-Include-Trybots: luci.dart.try:dart-sdk-linux-try,dart-sdk-mac-try,dart-sdk-win-try,vm-ffi-android-debug-arm-try,vm-ffi-android-debug-arm64-try,vm-kernel-asan-linux-release-x64-try,vm-kernel-mac-debug-x64-try,vm-kernel-linux-debug-ia32-try,vm-kernel-linux-debug-x64-try,vm-kernel-nnbd-linux-debug-x64-try,vm-kernel-nnbd-linux-debug-ia32-try,vm-kernel-nnbd-mac-release-x64-try,vm-kernel-nnbd-win-debug-x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-linux-debug-simarm_x64-try,vm-kernel-precomp-nnbd-linux-debug-x64-try,vm-kernel-precomp-win-release-x64-try,vm-kernel-reload-linux-debug-x64-try,vm-kernel-reload-rollback-linux-debug-x64-try,vm-kernel-win-debug-x64-try,vm-kernel-win-debug-ia32-try,vm-precomp-ffi-qemu-linux-release-arm-try,vm-kernel-precomp-obfuscate-linux-release-x64-try,vm-kernel-msan-linux-release-x64-try,vm-kernel-precomp-msan-linux-release-x64-try,vm-kernel-precomp-android-release-arm_x64-try,analyzer-analysis-server-linux-try,vm-kernel-precomp-linux-debug-x64c-try,vm-kernel-linux-debug-x64c-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195079
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Daco Harkes <dacoharkes@google.com>
In the codebase, we have several different interfaces for instance
methods that return a hash:
- uword Hash() const;
- intptr_t Hash() const;
- uint32_t Hash() const;
- intptr_t Hashcode() const;
This CL standardizes on `uword Hash() const` and adjusts any related
functions to match.
TEST=Existing test suites, as this is an internal refactoring.
Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-linux-debug-x64-try
Change-Id: If2cbce57f3fae0f0d24031b6e324f0323c965f41
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195067
Commit-Queue: Tess Strickland <sstrickl@google.com>
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Instead of special-casing the current fields that may have
WeakSerializationReferences, handle WSRs appearing as elements
or properties of objects more generally. This removes existing
special casing and avoids the need for it in case of new
future uses of WSRs.
For artificial nodes being added for dropped
WeakSerializationReference targets, add them as kArtificial nodes
(not kSnapshot) that has the original offset (element) or
name (property). The replacement is added as a kSnapshot node
that has a negative offset with the same magnitude as the
artificial node (element) or ":real_<property name>" (property).
This simplifies the work done in pkg/vm_snapshot_analysis to
use the artificial nodes instead of replacement ones for
reassembling hierarchies and the like.
This CL also cleans up the old SerializerWritingObjectScope
class, both moving it to Serializer::WritingObjectScope and
allowing nesting of WritingObjectScopes with the correct
semantics.
Thanks to this, not only can we recur when under a WritingObjectScope
instead of lifting recursion outside of those scopes, but we can
also create artificial nodes for non-empty per-code object pools and
static call target tables instead of attributing their contents
as supposed elements of the Code object being written.
TEST=pkg/vm_snapshot_analysis/test/instruction_sizes_test
Cq-Include-Trybots: luci.dart.try:pkg-linux-release-try,pkg-mac-release-try,pkg-win-release-try
Change-Id: Ib945c5afcd89b1458b8be3559b6eae24048aba2f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/194243
Commit-Queue: Tess Strickland <sstrickl@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
The StoreIndexedInstr::EmitNativeCode will use the "index" register
as is and not zero-extend it. That means the "index" register
cannot have kUnboxedInt32 representation (which allows upper 32
bits to contain garbage)
TEST=Existing test suite.
Change-Id: I413847ec9a43ff446a4f89c78dce7c4fdbceca10
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/195066
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>
Ivan Inozemtsev