Also add a SignedBitField alias so that sign extended BitFields can
be declared with default positions and/or sizes.
TEST=ci
Change-Id: I46bf7f9e378e0f20e7f2e4b4e7ed3e242946d9bb
Cq-Include-Trybots: luci.dart.try:vm-aot-dwarf-linux-product-x64-try,vm-aot-linux-debug-x64c-try,vm-aot-linux-release-x64-try,vm-aot-mac-release-arm64-try,vm-aot-linux-release-simarm_x64-try,vm-win-release-arm64-try,vm-aot-win-release-arm64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/382404
Commit-Queue: Tess Strickland <sstrickl@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
This is a reland of commit bfc1a44527
Change how the partial specializations for AtomicBitFieldContainer
are written so that Visual Studio properly chooses them instead of
the base BitField template when appropriate.
TEST=Windows ARM64 CI trybots
Original change's description:
> [vm] Improvements in the BitField API.
>
> If no position is specified, then the bitfield starts at bit 0.
>
> The default size for bool BitFields is 1 instead of the remaining
> bits in the container.
>
> If the size of the value type is smaller than the remaining bits
> in the container, then the size of the value type is used as
> the default size instead.
>
> If a signed value is used in a non-sign-extended BitField, only
> the magnitude of the value is stored, not the sign bit. This means
> the actual size of the bitfield may be one less than the requested
> size in this case.
>
> If the requested size of the bitfield is larger than the size of the
> value type, a compile-time error is thrown. (For signed types, the
> requested size is allowed to be the size of the entire value, even if
> only the magnitude bits are stored.)
>
> Rework uses of BitFields to avoid using separate constants for
> bit positions/sizes except for macro-defined bitfields (which now
> are universally bool, and so size 1).
>
> TEST=vm/cc/BitFields_Defaults
>
> Change-Id: I40711c929d2e5165ce40823772beb49e8cfdb820
> Cq-Include-Trybots: luci.dart.try:vm-aot-dwarf-linux-product-x64-try,vm-aot-linux-debug-x64c-try,vm-aot-linux-release-x64-try,vm-aot-mac-release-arm64-try,vm-aot-linux-release-simarm_x64-try
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/381644
> Reviewed-by: Ryan Macnak <rmacnak@google.com>
> Commit-Queue: Tess Strickland <sstrickl@google.com>
Change-Id: I5e3a9e3e2a80d5689a23a0603f8f81fac1576cd3
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Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/382383
Auto-Submit: Tess Strickland <sstrickl@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Also removed a bunch of `CheckNotNullable`s that shouldn't be necessary any more. Any remaining non-sound-null-safety code runs today, and no more should be written. (And if it is, it'll mostly just err somewhere else, with a worse error message.)
Tested: New test added. Removed older tests checking for unsound null-safety.
Change-Id: I28626909cd8c1f91db6c61fc2b93042ed1b085dd
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/380780
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Lasse Nielsen <lrn@google.com>
This reverts commit bfc1a44527.
Reason for revert: Broke Windows build.
Original change's description:
> [vm] Improvements in the BitField API.
>
> If no position is specified, then the bitfield starts at bit 0.
>
> The default size for bool BitFields is 1 instead of the remaining
> bits in the container.
>
> If the size of the value type is smaller than the remaining bits
> in the container, then the size of the value type is used as
> the default size instead.
>
> If a signed value is used in a non-sign-extended BitField, only
> the magnitude of the value is stored, not the sign bit. This means
> the actual size of the bitfield may be one less than the requested
> size in this case.
>
> If the requested size of the bitfield is larger than the size of the
> value type, a compile-time error is thrown. (For signed types, the
> requested size is allowed to be the size of the entire value, even if
> only the magnitude bits are stored.)
>
> Rework uses of BitFields to avoid using separate constants for
> bit positions/sizes except for macro-defined bitfields (which now
> are universally bool, and so size 1).
>
> TEST=vm/cc/BitFields_Defaults
>
> Change-Id: I40711c929d2e5165ce40823772beb49e8cfdb820
> Cq-Include-Trybots: luci.dart.try:vm-aot-dwarf-linux-product-x64-try,vm-aot-linux-debug-x64c-try,vm-aot-linux-release-x64-try,vm-aot-mac-release-arm64-try,vm-aot-linux-release-simarm_x64-try
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/381644
> Reviewed-by: Ryan Macnak <rmacnak@google.com>
> Commit-Queue: Tess Strickland <sstrickl@google.com>
Change-Id: I13bf2218ecc47a42f3a6091821037b51b56618fb
Cq-Include-Trybots: luci.dart.try:vm-aot-dwarf-linux-product-x64-try,vm-aot-linux-debug-x64c-try,vm-aot-linux-release-x64-try,vm-aot-mac-release-arm64-try,vm-aot-linux-release-simarm_x64-try
No-Presubmit: true
No-Tree-Checks: true
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Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/382380
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Tess Strickland <sstrickl@google.com>
If no position is specified, then the bitfield starts at bit 0.
The default size for bool BitFields is 1 instead of the remaining
bits in the container.
If the size of the value type is smaller than the remaining bits
in the container, then the size of the value type is used as
the default size instead.
If a signed value is used in a non-sign-extended BitField, only
the magnitude of the value is stored, not the sign bit. This means
the actual size of the bitfield may be one less than the requested
size in this case.
If the requested size of the bitfield is larger than the size of the
value type, a compile-time error is thrown. (For signed types, the
requested size is allowed to be the size of the entire value, even if
only the magnitude bits are stored.)
Rework uses of BitFields to avoid using separate constants for
bit positions/sizes except for macro-defined bitfields (which now
are universally bool, and so size 1).
TEST=vm/cc/BitFields_Defaults
Change-Id: I40711c929d2e5165ce40823772beb49e8cfdb820
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Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/381644
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Tess Strickland <sstrickl@google.com>
This CL fixes two bugs related to scoping:
1. Empty variable name lookup in outer functions failing.
2. Let expressions not pushing and popping contexts.
Additionally, this CL introduces a `--print-scoping` debug flag to
ease debugging scoping issues in the future.
Variable lookup is now only using kernel offset, unless the offset
is `kNoKernelOffset`. In that case, the names are used.
All synthetic variables in the VM now use `kNoKernelOffset` as their
offset.
The let expressions not pushing contexts is fixed by pushing context.
The context is only pushed if the scope captures variables. So this
should not lead to performance regressions. (Any lacking pushing of
scopes should have lead to crashes.)
TEST=tests/ffi/regress_56412_2_test.dart
TEST=tests/ffi/regress_56412_test.dart
Closes: https://github.com/dart-lang/sdk/issues/56412
Change-Id: I85fc4a161b833df80ce8f2911d618aa2ac9797eb
Cq-Include-Trybots: dart/try:vm-aot-android-release-arm64c-try,vm-aot-android-release-arm_x64-try,vm-aot-asan-linux-release-x64-try,vm-aot-linux-debug-x64-try,vm-aot-linux-debug-x64c-try,vm-aot-mac-release-arm64-try,vm-aot-mac-release-x64-try,vm-aot-msan-linux-release-x64-try,vm-aot-obfuscate-linux-release-x64-try,vm-aot-optimization-level-linux-release-x64-try,vm-aot-tsan-linux-release-x64-try,vm-aot-ubsan-linux-release-x64-try,vm-aot-win-debug-arm64-try,vm-aot-win-debug-x64-try,vm-aot-win-debug-x64c-try,vm-appjit-linux-debug-x64-try,vm-asan-linux-release-arm64-try,vm-asan-linux-release-x64-try,vm-checked-mac-release-arm64-try,vm-eager-optimization-linux-release-ia32-try,vm-eager-optimization-linux-release-x64-try,vm-ffi-android-debug-arm-try,vm-ffi-android-debug-arm64c-try,vm-ffi-qemu-linux-release-arm-try,vm-ffi-qemu-linux-release-riscv64-try,vm-fuchsia-release-arm64-try,vm-fuchsia-release-x64-try,vm-linux-debug-ia32-try,vm-linux-debug-x64-try,vm-linux-debug-x64c-try,vm-mac-debug-arm64-try,vm-mac-debug-x64-try,vm-msan-linux-release-arm64-try,vm-msan-linux-release-x64-try,vm-reload-linux-debug-x64-try,vm-reload-rollback-linux-debug-x64-try,vm-tsan-linux-release-arm64-try,vm-tsan-linux-release-x64-try,vm-ubsan-linux-release-arm64-try,vm-ubsan-linux-release-x64-try,vm-win-debug-arm64-try,vm-win-debug-x64-try,vm-win-debug-x64c-try,vm-win-release-ia32-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/380983
Reviewed-by: Slava Egorov <vegorov@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
AllocateSuspendState was calling `Instance::SetField` but did not allow lazy deopt to occur. Possibility of lazy deopt from those
field stores is only theoretical, but it manifested as a
deadlock between background compiler and main thread: if main
thread calls `SetField` which tries to acquire write access to
the program lock, while background compiler has already
acquired write access to the program lock and is trying to
stop all mutators at a GC+Deopt safepoint then we will
deadlock as `AllocateSuspendState` does not allow Deopts
(safepoint level was lowered by 5bc107c29d).
We fix this problem by bypassing field guard and simply
writing affected fields directly in AllocateSuspendState.
We make sure to initialize guarded state for these fields
eagerly, so it never needs to change.
TEST=added assertion which validates that attempting to acquire program lock for write can only occur where GC+Deopt are permitted.
Change-Id: I6ee6b82f3296f49f799c0069e42850711c9320ac
Bug: b/355226004
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/381240
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Slava Egorov <vegorov@google.com>
When reading function types from bytecode, number of implicit
parameters should be set in the FunctionType.
Capture variable holding a local function when local function
invocation happens from a different function scope.
Also remove debug prints from bytecode reader.
TEST=corelib/list_for_each_test
TEST=language/closure/closure6_test
Change-Id: I69c92ba2749509a24d13e8b2a10c5dea76973a56
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/381081
Auto-Submit: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Slava Egorov <vegorov@google.com>
Make unwinding follow the awaiter link attached to the timeout handler,
which allows it to continue past the asynchronous gap into the
corresponding listeners. This significantly improves the stack trace:
for example a timing out `await Socket.connect()` now produces:
SocketException: Connection timed out, ...
_NativeSocket.connect.<anonymous closure>.<anonymous closure>
_RootZone.run (dart:async/zone.dart:1655:54)
Future.timeout.<anonymous closure>
<asynchronous suspension>
_RawSocket.connect.<anonymous closure>
<asynchronous suspension>
Socket._connect.<anonymous closure>
<asynchronous suspension>
main
<asynchronous suspension>
Where without this change it produced:
SocketException: Connection timed out, ...
_NativeSocket.connect.<anonymous closure>.<anonymous closure>
_RootZone.run
Future.timeout.<anonymous closure>
Timer._createTimer.<anonymous closure>
_Timer._runTimers
_Timer._handleMessage
_RawReceivePort._handleMessage
Which is much less informative.
TEST=vm/dart/awaiter_stacks
Fixes https://github.com/dart-lang/sdk/issues/56431
Change-Id: If4798e9e216ed88480a2b2b91ad6fa13dcb14ca4
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/380982
Reviewed-by: Sigmund Cherem <sigmund@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Slava Egorov <vegorov@google.com>
Reviewed-by: Lasse Nielsen <lrn@google.com>
* Revise uses of ObjectPtr::GetClassId which now handles Smis.
* Accomodate for _Map and _Set moved to dart:_compact_hash.
Also, a bit of code cleanup in the interpreter:
* Replace RAW_CAST with Handle::RawCast
* Replace NULL with nullptr.
TEST=Manual
Change-Id: Ib49f66cfcbac26200294d3ee55edc1b99c94fcf6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/380685
Auto-Submit: Alexander Markov <alexmarkov@google.com>
Commit-Queue: Slava Egorov <vegorov@google.com>
Reviewed-by: Slava Egorov <vegorov@google.com>
Arbitrary ObjectPtr can be a non-heap object (Smi), so methods
ObjectPtr::Is* which test class id should account for Smi.
Changed ObjectPtr::GetClassId to account for Smi similarly to
Object::GetClassId. Added unsafe ObjectPtr::GetClassIdOfHeapObject
which can be used when caller knows the heap nature of the object.
This change also fixes Integer::GetInt64Value which was relying on ObjectPtr::IsSmi.
TEST=vm/cc/Smi, vm/cc/Mint
Change-Id: I1391600e2acedc7b2a8f35c814df113ec9ba8698
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/380280
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
This opens possibility for other core libraries to access implementation
details of compact hash maps/sets and call special "core-library-only"
methods.
TEST=ci
CoreLibraryReviewExempt: VM only library change
Change-Id: I1d7524932c34e6fbe2428853dd547d58bef2d061
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/379840
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Slava Egorov <vegorov@google.com>
Reviewed-by: Lasse Nielsen <lrn@google.com>
There are no callers of CaptureLocalVariables(), and only
CaptureLocalVariables() checks the IsForcedStackBit bitfield of
LocalVariables, so remove that and its setter/getter as well.
TEST=ci (dead code removal)
Issue: https://github.com/dart-lang/sdk/issues/27590
Change-Id: I8032ff8f8cd7a43d3d30f1a4ec4e37cbfcee0a82
Cq-Include-Trybots: luci.dart.try:vm-aot-linux-release-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/379802
Commit-Queue: Tess Strickland <sstrickl@google.com>
Reviewed-by: Daco Harkes <dacoharkes@google.com>
This CL also removes ability to assign names to mutexes which was
added in c25ebfff96 but did not yield
any interesting data.
TEST=ci
CoreLibraryReviewExempt: Changes to dart:concurrent only.
Cq-Include-Trybots: luci.dart.try:vm-fuchsia-release-x64-try,vm-win-debug-x64-try,vm-win-release-x64-try,vm-aot-linux-product-x64-try
Change-Id: Id41e1d29832f6008e02f0a571ee67564e1a84224
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/375300
Reviewed-by: Martin Kustermann <kustermann@google.com>
The Stop assembler macro was abstracted in AssemblerBase a while back,
so all of the architecture-dependent StopInstr::MakeLocationSummary
and StopInstr::EmitNativeCode implementations are the same. Replace
them with a single architecture-independent implementation in il.cc.
TEST=ci (refactoring cleanup)
Change-Id: I29e16bd70ab5733417e664c2946abe492d3b0d2c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/379301
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Commit-Queue: Tess Strickland <sstrickl@google.com>
Avoid adding environments on control flow instructions (block entries,
branches and gotos) when inserting conditional dispatch table calls.
UseTableDispatch pass is performed after EliminateEnvironments pass
which removes most environments including environments on those
instructions, so these environments are unnecessary and would have
been removed by EliminateEnvironments if it was run again.
Also, these environments confuse register allocation and cause
"unreachable code" crash in FindCover (called from ResolveControlFlow).
TEST=vm/dart/dynamic_module_pragmas_il_test
Change-Id: Ifb4b268e4cade2c71304798b4e0dfeacf1f8089b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/377842
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Slava Egorov <vegorov@google.com>
Previously, when the inliner copied constants from caller to callee
graphs when creating parameter stubs, it always created a boxed version
of the constant, even if the constant is unboxed in the caller graph.
However, during the final steps of inlining, it would then use the
representation of the constant when copying all used constants from the
callee graph back to the caller graph.
This CL makes this behavior consistent so that the original
representation is also maintained when copying constants from the
caller graph to the callee graph.
This CL adds canonicalization for BoxInteger that replaces
BoxInteger<from>(UnboxedConstant<to>(i)) with Constant(i) if to is an
unboxed integer representation and i is representable in from.
(Previously, this was done for BoxInt64, but not for other BoxInteger
subclasses.)
TEST=vm/cc/IL_Canonicalize_BoxIntegerUnboxedConstant
Change-Id: I992098c0d47c4185792d983749fe6cf74eeef106
Cq-Include-Trybots: luci.dart.try:vm-aot-linux-release-simarm_x64-try,vm-aot-linux-debug-x64-try,vm-aot-mac-release-arm64-try,vm-aot-mac-product-arm64-try,vm-aot-linux-product-x64-try,vm-aot-dwarf-linux-product-x64-try,vm-aot-linux-debug-simarm_x64-try,vm-linux-debug-x64-try,vm-mac-debug-arm64-try,vm-mac-release-arm64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/321980
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Commit-Queue: Tess Strickland <sstrickl@google.com>
Dynamic interface annotator now automatically annotates classes and
members which are used implicitly:
* Targets of redirecting factories.
* Classes and members used in constants.
* Instance fields of classes used in instance constants or
having a callable const constructor.
* Everything used in the bodies of extendable mixin declarations and
mixin classes.
* Possible dispatch targets of instance calls
(overrides/implementations).
Front-end server now also exposes '--dynamic-interface' option,
similar to gen_kernel tool.
Also, this change includes a couple of minor fixes:
* Typo in ast.dart.
* In the front-end server, additional dill file specified with
'--import-dill' option is not ignored when '--link-platform' is
also used.
TEST=pkg/vm/testcases/transformations/dynamic_interface_annotator
Change-Id: I705b64efb1834dec6e0bdc5873025607f3472139
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/377761
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
I believe this might not be necessary anymore after
https://dart-review.googlesource.com/c/sdk/+/361881 and
https://dart-review.googlesource.com/c/sdk/+/372500.
TEST=pkg/dartdev/test/native_assets/*.dart
TEST=tests/ffi/native_assets/*.dart
Change-Id: I5127d7c809ac7b7a2193da51458bfd8b4d9c755b
Cq-Include-Trybots: dart/try:vm-aot-linux-debug-x64-try,vm-aot-linux-debug-x64c-try,vm-aot-mac-release-arm64-try,vm-aot-mac-release-x64-try,vm-aot-obfuscate-linux-release-x64-try,vm-aot-optimization-level-linux-release-x64-try,vm-aot-win-debug-arm64-try,vm-aot-win-debug-x64-try,vm-aot-win-debug-x64c-try,pkg-linux-debug-try,pkg-linux-release-arm64-try,pkg-mac-release-try,pkg-mac-release-arm64-try,pkg-win-release-try,pkg-win-release-arm64-try,vm-aot-asan-linux-release-x64-try,vm-asan-linux-release-x64-try,vm-aot-msan-linux-release-x64-try,vm-msan-linux-release-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/377000
Reviewed-by: Tess Strickland <sstrickl@google.com>
Derek Xu