Commit Graph

420 Commits

Author SHA1 Message Date
asiva c4cb74cb9d [VM/GC] Ensure that all the GC verification flags do not produce trace
output unless there is an assertion or Fatal error.

(This is needed to ensure that we are able to run the flutter tests with
all these verifications turned on and not disturbing the output from the
tests with these extraneous trace messages)

TEST=ci

Change-Id: Ifb7211e340f1cf29f6d2bff412eb4107f9cb64a2
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/299440
Commit-Queue: Siva Annamalai <asiva@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
2023-04-28 23:25:43 +00:00
Alexander Markov 2ee6fcf514 [vm] Remove TypeRef
TypeRef type wraps around another type and it was used to represent
a graph of recursive types. After [0], the only use of TypeRef is
for TypeParameter.bound which may indirectly reference the same
TypeParameter.

This change replaces TypeParameter.bound with TypeParameter.owner and
removes TypeRef entirely. Various parts of the VM no longer need to
handle and support TypeRefs.

TypeParameter.owner can reference a FunctionType, Class,
or, as an optimization, it can be set to null in order to share
class type parameters among different classes.

With the exception of the 'TypeParameter.owner' back pointer,
VM types are now not recursive and can be visited without
additional tracking.

Caveats:

* Generic FunctionType cannot be cloned in a shallow way:
  when copying a FunctionType, type parameters should be cloned too
  and their owners should be updated. For that reason,
  a mapping between 'from' and 'to' function types
  (FunctionTypeMapping) is maintained during type transformations
  such as InstantiateFrom.
  FunctionType::Clone is used instead of Object::Clone where
  appropriate.

* When testing types for subtyping and equivalence, mapping
  between function types is passed to make sure
  type parameters belong to the equivalent function types.

* IL serializer needs to serialize function types as a whole before
  serializing any types potentially pointing into the middle of a
  function type (such as return type 'List<Y0>' pointing into
  the middle of a function type 'List<Y0> Function<Y0>()').

[0] https://dart-review.googlesource.com/c/sdk/+/296300

TEST=ci

Change-Id: I67c2fd0117c6183a45e183919a7847fd1af70b3e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/294165
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
2023-04-28 19:29:36 +00:00
Alexander Aprelev 86d754690a [vm/isolates] Put limit on how many isolates are suspended.
Fixes https://github.com/dart-lang/sdk/issues/52154
TEST=ci

Change-Id: I6f620113232cf8f771dd73be334ace0e385784f5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/297920
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Alexander Aprelev <aam@google.com>
2023-04-26 22:18:51 +00:00
Martin Kustermann 9bdd2ff1de [vm] Cleanup unused include, unnecessary fields on [Thread], rename mutator thread, ensure setjmp drains sticky error
Some cleanups factored out of a larger CL (which refactors enter/exit of threads):

  * remove unused `#include "vm/thread_registry.h"`
  * remove unused/unnecessary fields from [Thread] object
  * rename IsMutator() -> IsDartMutator()
  * make tests using setjmp() drain the sticky error
    => to ensure there's no sticky error on isolate shutdown

TEST=ci

Change-Id: I53935e8bd0628ab3768627d6d5e01c3f0e3a57ad
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/296582
Commit-Queue: Martin Kustermann <kustermann@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
2023-04-20 17:42:06 +00:00
Ryan Macnak 2bfecc160b [vm] Update to constexpr in runtime/vm.
TEST=build
Change-Id: I2dd8ae69764af27f480a19995b491e98f52476ae
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/293902
Reviewed-by: Liam Appelbe <liama@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2023-04-12 22:18:54 +00:00
Ryan Macnak 1eae028526 [vm] Fix zero-as-null-pointer-constant warnings in the VM.
Unfortunately we cannot enable -Wzero-as-null-pointer-constant because of zlib and icu headers we include.

TEST=build
Change-Id: I9ffd7d7e26f2b3dd616ce54d164b92e60a2366dc
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/293882
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
2023-04-10 21:38:57 +00:00
Ryan Macnak f9a6a5bdd2 [vm] Update NULL to nullptr in runtime/vm.
TEST=build
Change-Id: I2834ef7cf7cb7c8770f8167a2438cbedcee5c623
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/292063
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
2023-04-10 18:15:12 +00:00
Ryan Macnak 63e6041ca9 [vm] Update to variadic FATAL.
TEST=ci
Change-Id: Ic6bc784605e10760bb28ea6df34242336a33b4d0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/286947
Reviewed-by: Alexander Aprelev <aam@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2023-03-06 22:06:59 +00:00
Josh Soref 0633041729 Spelling runtime vm
Closes https://github.com/dart-lang/sdk/pull/50786

TEST=ci

GitOrigin-RevId: 781a38e2925ba505f0223ecd578faa9be8e1485c
Change-Id: Ia3c615012d1bac3f0cf64dc01c2ceb40d50d1193
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/276684
Reviewed-by: Alexander Markov <alexmarkov@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>
2022-12-29 10:18:02 +00:00
Alexander Markov 3675fd25f4 [vm] Packed representation of record shape
The representation of record shape in record instances and record
types is changed from a pair

  int num_fields
  Array field_names

to a single integer - packed bitfield

  int num_fields(16)
  int field_names_index(kSmiBits-16)

where field names index is an index in the array available from
ObjectStore.

With the new representation of record shapes:
1) Size of record instances is reduced.
2) Number of comparisons for a shape test reduced from 2 to 1
(shape test is used during type checks).
3) A few operations removed from Record.hashCode.
4) Type testing stubs (TTS) are now supported for record types with
named fields. Previously it was not possible to check shape of records
with named fields in TTS as TTS cannot access object pool and cannot
load field names array).

TEST=existing

Issue: https://github.com/dart-lang/sdk/issues/49719

Change-Id: I7cdcbb53938aba5d561cd24dc99530395dbbea7e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/276201
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
2022-12-20 20:11:48 +00:00
Daco Harkes 1d567c888f [vm] Remove use of CastError
`CastError` is replaced by `TypeError`.

Also makes the fields of TypeError nullable. See:
https://github.com/dart-lang/sdk/issues/49279

TEST=build SDK and run default suites.

Bug: https://github.com/dart-lang/sdk/issues/49529
Change-Id: I7e880ff2d8b18c4bffdd7a942efd743244a12734
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/274381
Reviewed-by: Tess Strickland <sstrickl@google.com>
Commit-Queue: Daco Harkes <dacoharkes@google.com>
2022-12-08 17:07:33 +00:00
Alexander Aprelev a83cfa0990 [vm] Replace Double_hashCode native method with graph intrinsic implementation.
Bug: https://github.com/dart-lang/sdk/issues/50265
TEST=ci
Change-Id: Icae87ce3871bb44599e0f1fa19d8becb3a6fcdec
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/264240
Commit-Queue: Alexander Aprelev <aam@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
2022-11-17 02:28:37 +00:00
Alexander Markov 10e9606861 [vm] More efficient 'is' tests for record types
'is' tests against record types are split into series of 'is' tests of
record fields. This is more efficient as record instances cannot be
added to subtype test caches (because type of a record instance
depends on types of its fields).

This change also adds canonicalization and constant evaluation of
LoadFieldInstr for record fields.

Performance on a trivial micro-benchmark (on x64):
JIT (RunTime): 4519104.5 -> 20031.5
AOT (RunTime): 4352583.0 -> 26281.6

TEST=ci
Issue: https://github.com/dart-lang/sdk/issues/49719
Change-Id: I2ed464cd3b31f365b17805f4e7debe1d6d1051fa
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/268080
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
2022-11-07 22:27:31 +00:00
Alexander Markov b9dfd1a651 [vm] Specialize allocation for small records
This change introduces specialized stubs and IL instruction for
allocating records with 2 or 3 fields. This makes allocation of
small records slightly faster compared to a construction of similar
class instances and makes code size of record allocation smaller.

Benchmark:
MultipleReturns.NotInlined.Record(RunTime) 77150 -> 66222
MultipleReturns.NotInlined.RecordNamed(RunTime) 78073 -> 67044
MultipleReturns.Forwarded.Record(RunTime) 97130 -> 77635
MultipleReturns.Forwarded.RecordNamed(RunTime) 96495 -> 77904

TEST=ci

Issue: https://github.com/dart-lang/sdk/issues/49719
Change-Id: I8ed7add06b39ba79dfd78bbe2afaefe606cc505b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/266420
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Slava Egorov <vegorov@google.com>
2022-11-03 15:06:35 +00:00
Ryan Macnak a8fe399c79 [vm] Stricter checks when sending isolate messages between groups.
- Check against sending arbitrary classes via types.
 - Stop allowing any object from dart:core, dart:collection, dart:typed_data (effectively reverts 807eacae30).

`SendPort.send` does not require such objects are sendable, and there is no guarantee the receiving isolate can represent them.

TEST=ci
Bug: https://github.com/dart-lang/sdk/issues/50243
Change-Id: I7e9b0e9d83080d44a98b257cd8f2a58da5443a87
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/264725
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Alexander Aprelev <aam@google.com>
2022-10-28 19:18:51 +00:00
Alexander Markov b5061ffae1 [vm] Support dynamic access to record fields in JIT mode
TEST=language/records/simple/dynamic_field_access_test

Issue: https://github.com/dart-lang/sdk/issues/49719
Change-Id: I18df67e0bf97944c8e5ef8a71f075b5cd40fec29
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/262300
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
2022-10-03 21:24:47 +00:00
Daco Harkes b113fffb65 Reland "[vm/ffi] Throw on returning Error in Handle"
Fix: Check handle contents for Smi.
Closes: https://github.com/flutter/flutter/issues/112726

Orignal CL description:

Makes `Dart_Handle` FFI returns behave as the following snippet:

```
Dart_Handle ExampleSnippet() {
  Dart_Handle result = ...;
  if (Dart_IsError(result)) {
    Dart_PropagateError(result);
  }
  return result;
}
```

Also makes FFI consistent with Dart_NativeFunctions, which will
automatically throw upon return if Dart_SetReturnValue set the result
to an error.

`UnhandledExceptions` cannot flow out into Dart generated code. So,
the implementation needs to be in `FfiCallInstr::EmitNativeCode`.

Using `Dart_IsError` is slow compared to a machine code class id
check. So, we should do the handle unwrapping and class id check in
machine code.

Unwrapping Handles in machine code is only safe when the GC is
guaranteed to not run: Either (1) in `kThreadInGenerated`, or (2) in
`kThreadInNative`, but only when transitioned into safepoint. So, the
handle cannot be unwrapped immediately after the FFI call in machine code. We first need to transition back to generated.

This means we need to transition again to native to do the actual
`Dart_PropagateError` call. We can do so without the stub in JIT
because we never return with normal control flow.

Performance impact of this change is within benchmark noise in both
JIT and AOT.
Size impact is 42 bytes on x64, which is 10% in AOT and 12% in JIT.

For more numbers see: go/dart-ffi-handle-error

TEST=runtime/bin/ffi_test/ffi_test_functions_vmspecific.cc
TEST=tests/ffi/vmspecific_handle_test.dart

Closes: https://github.com/dart-lang/sdk/issues/49936
Change-Id: Id8edfd841a7d6246438386007d83747868a0a151
Cq-Include-Trybots: luci.dart.try:vm-canary-linux-debug-try,vm-ffi-android-debug-arm64c-try,vm-ffi-android-debug-arm-try,vm-kernel-gcc-linux-try,vm-kernel-linux-debug-x64-try,vm-kernel-linux-debug-x64c-try,vm-kernel-msvc-windows-try,vm-kernel-optcounter-threshold-linux-release-x64-try,vm-kernel-precomp-asan-linux-release-x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-reload-linux-debug-x64-try,vm-kernel-reload-rollback-linux-debug-x64-try,vm-kernel-tsan-linux-release-x64-try,vm-kernel-win-debug-x64-try,vm-kernel-win-debug-ia32-try,vm-precomp-ffi-qemu-linux-release-arm-try,vm-precomp-ffi-qemu-linux-release-riscv64-try,vm-kernel-linux-debug-ia32-try,vm-kernel-mac-release-arm64-try,vm-kernel-precomp-win-debug-x64c-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/262342
Reviewed-by: Martin Kustermann <kustermann@google.com>
Auto-Submit: Daco Harkes <dacoharkes@google.com>
Commit-Queue: Daco Harkes <dacoharkes@google.com>
2022-10-03 12:25:08 +00:00
Zach Anderson 2742d90033 Revert "[vm/ffi] Throw on returning Error in Handle"
This reverts commit d9c442bce8.

Reason for revert: https://github.com/flutter/flutter/issues/112726

Original change's description:
> [vm/ffi] Throw on returning `Error` in `Handle`
>
> Makes `Dart_Handle` FFI returns behave as the following snippet:
>
> ```
> Dart_Handle ExampleSnippet() {
>   Dart_Handle result;
>   if (Dart_IsError(result)) {
>     Dart_PropagateError(result);
>   }
>   return result;
> }
> ```
>
> Also makes FFI consistent with Dart_NativeFunctions, which will
> automatically throw upon return if Dart_SetReturnValue set the result
> to an error.
>
> `UnhandledExceptions` cannot flow out into Dart generated code. So,
> the implementation needs to be in `FfiCallInstr::EmitNativeCode`.
>
> Using `Dart_IsError` is slow compared to a machine code class id
> check. So, we should do the handle unwrapping and class id check in
> machine code.
>
> Unwrapping Handles in machine code is only safe when the GC is
> guaranteed to not run: Either (1) in `kThreadInGenerated`, or (2) in
> `kThreadInNative`, but only when transitioned into safepoint. So, the
> handle cannot be unwrapped immediately after the FFI call in machine code. We first need to transition back to generated.
>
> This means we need to transition again to native to do the actual
> `Dart_PropagateError` call. We can do so without the stub in JIT
> because we never return with normal control flow.
>
> Performance impact of this change is within benchmark noise in both
> JIT and AOT.
> Size impact is 42 bytes on x64, which is 10% in AOT and 12% in JIT.
>
> For more numbers see: go/dart-ffi-handle-error
>
> TEST=runtime/bin/ffi_test/ffi_test_functions_vmspecific.cc
> TEST=tests/ffi/vmspecific_handle_test.dart
>
> Closes: https://github.com/dart-lang/sdk/issues/49936
> Change-Id: Ie8fabeb6d53bc80689541bc4470cb37ee2200581
> Cq-Include-Trybots: luci.dart.try:vm-canary-linux-debug-try,vm-ffi-android-debug-arm64c-try,vm-ffi-android-debug-arm-try,vm-kernel-gcc-linux-try,vm-kernel-linux-debug-x64-try,vm-kernel-linux-debug-x64c-try,vm-kernel-msvc-windows-try,vm-kernel-optcounter-threshold-linux-release-x64-try,vm-kernel-precomp-asan-linux-release-x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-reload-linux-debug-x64-try,vm-kernel-reload-rollback-linux-debug-x64-try,vm-kernel-tsan-linux-release-x64-try,vm-kernel-win-debug-x64-try,vm-kernel-win-debug-ia32-try,vm-precomp-ffi-qemu-linux-release-arm-try,vm-precomp-ffi-qemu-linux-release-riscv64-try,vm-kernel-linux-debug-ia32-try,vm-kernel-mac-release-arm64-try,vm-kernel-precomp-win-debug-x64c-try
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/261603
> Reviewed-by: Ryan Macnak <rmacnak@google.com>
> Reviewed-by: Martin Kustermann <kustermann@google.com>
> Commit-Queue: Daco Harkes <dacoharkes@google.com>

TBR=kustermann@google.com,rmacnak@google.com,dacoharkes@google.com,dart-scoped@luci-project-accounts.iam.gserviceaccount.com

Change-Id: I94cc63de16b54db2b0a4f92759c39a1e569b8e63
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Cq-Include-Trybots: luci.dart.try:vm-canary-linux-debug-try,vm-ffi-android-debug-arm64c-try,vm-ffi-android-debug-arm-try,vm-kernel-gcc-linux-try,vm-kernel-linux-debug-x64-try,vm-kernel-linux-debug-x64c-try,vm-kernel-msvc-windows-try,vm-kernel-optcounter-threshold-linux-release-x64-try,vm-kernel-precomp-asan-linux-release-x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-reload-linux-debug-x64-try,vm-kernel-reload-rollback-linux-debug-x64-try,vm-kernel-tsan-linux-release-x64-try,vm-kernel-win-debug-x64-try,vm-kernel-win-debug-ia32-try,vm-precomp-ffi-qemu-linux-release-arm-try,vm-precomp-ffi-qemu-linux-release-riscv64-try,vm-kernel-linux-debug-ia32-try,vm-kernel-mac-release-arm64-try,vm-kernel-precomp-win-debug-x64c-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/262270
Reviewed-by: Zach Anderson <zra@google.com>
Reviewed-by: Liam Appelbe <liama@google.com>
Commit-Queue: Zach Anderson <zra@google.com>
2022-09-30 21:51:59 +00:00
Daco Harkes d9c442bce8 [vm/ffi] Throw on returning Error in Handle
Makes `Dart_Handle` FFI returns behave as the following snippet:

```
Dart_Handle ExampleSnippet() {
  Dart_Handle result;
  if (Dart_IsError(result)) {
    Dart_PropagateError(result);
  }
  return result;
}
```

Also makes FFI consistent with Dart_NativeFunctions, which will
automatically throw upon return if Dart_SetReturnValue set the result
to an error.

`UnhandledExceptions` cannot flow out into Dart generated code. So,
the implementation needs to be in `FfiCallInstr::EmitNativeCode`.

Using `Dart_IsError` is slow compared to a machine code class id
check. So, we should do the handle unwrapping and class id check in
machine code.

Unwrapping Handles in machine code is only safe when the GC is
guaranteed to not run: Either (1) in `kThreadInGenerated`, or (2) in
`kThreadInNative`, but only when transitioned into safepoint. So, the
handle cannot be unwrapped immediately after the FFI call in machine code. We first need to transition back to generated.

This means we need to transition again to native to do the actual
`Dart_PropagateError` call. We can do so without the stub in JIT
because we never return with normal control flow.

Performance impact of this change is within benchmark noise in both
JIT and AOT.
Size impact is 42 bytes on x64, which is 10% in AOT and 12% in JIT.

For more numbers see: go/dart-ffi-handle-error

TEST=runtime/bin/ffi_test/ffi_test_functions_vmspecific.cc
TEST=tests/ffi/vmspecific_handle_test.dart

Closes: https://github.com/dart-lang/sdk/issues/49936
Change-Id: Ie8fabeb6d53bc80689541bc4470cb37ee2200581
Cq-Include-Trybots: luci.dart.try:vm-canary-linux-debug-try,vm-ffi-android-debug-arm64c-try,vm-ffi-android-debug-arm-try,vm-kernel-gcc-linux-try,vm-kernel-linux-debug-x64-try,vm-kernel-linux-debug-x64c-try,vm-kernel-msvc-windows-try,vm-kernel-optcounter-threshold-linux-release-x64-try,vm-kernel-precomp-asan-linux-release-x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-reload-linux-debug-x64-try,vm-kernel-reload-rollback-linux-debug-x64-try,vm-kernel-tsan-linux-release-x64-try,vm-kernel-win-debug-x64-try,vm-kernel-win-debug-ia32-try,vm-precomp-ffi-qemu-linux-release-arm-try,vm-precomp-ffi-qemu-linux-release-riscv64-try,vm-kernel-linux-debug-ia32-try,vm-kernel-mac-release-arm64-try,vm-kernel-precomp-win-debug-x64c-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/261603
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Daco Harkes <dacoharkes@google.com>
2022-09-30 13:29:51 +00:00
Ryan Macnak cba1a09e5c [vm, compiler] Inform MSan about parameters coming from FFI.
- Mark the outgoing arguments stack area as initialized.
 - Mark the trampoline's incoming parameter slots as initialized in case they are used as local handles.
 - Mark the outgoing register arguments as initialized.

TEST=msan
Bug: https://github.com/dart-lang/sdk/issues/42314
Bug: https://github.com/dart-lang/sdk/issues/49298
Bug: https://github.com/dart-lang/sdk/issues/49957
Change-Id: Ifa978e1b905a424ec9f64b89879cea6e82f70d12
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/259102
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2022-09-23 21:31:14 +00:00
Vyacheslav Egorov 83ab5d5ca3 [vm] Remove dynamic field unboxing in JIT
Instead apply the same approach as we do in AOT: unbox based on the
static type information. There are no TFA results available in JIT,
but we could still unbox fields when running in sound null-safety.

TEST=ci

Cq-Include-Trybots: luci.dart.try:vm-kernel-reload-linux-release-x64-try,vm-kernel-reload-linux-debug-x64-try,vm-kernel-reload-rollback-linux-debug-x64-try,vm-kernel-reload-rollback-linux-release-x64-try,vm-kernel-precomp-linux-debug-x64-try,vm-kernel-precomp-linux-product-x64-try,vm-kernel-precomp-linux-release-x64-try,vm-kernel-precomp-nnbd-linux-release-simarm64-try,vm-kernel-linux-debug-simriscv64-try,vm-kernel-precomp-linux-debug-simriscv64-try,vm-kernel-nnbd-linux-release-ia32-try,vm-kernel-nnbd-linux-debug-x64-try,vm-kernel-nnbd-linux-debug-ia32-try,vm-kernel-nnbd-linux-release-simarm-try,vm-kernel-nnbd-linux-release-simarm64-try
Change-Id: Ide2e78c6659261ef8d245a4586cf699ea0fbb459
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/256211
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Slava Egorov <vegorov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
2022-09-20 13:42:45 +00:00
Alexander Markov aa03b81b81 [vm] Initial implementation of record type checks
This change provides baseline implementation of type checks involving
record instances and record types via runtime calls.

TEST=language/records/simple/type_checks_test
Issue: https://github.com/dart-lang/sdk/issues/49719

Change-Id: I2402f3db0a6dadbab477b073ed2b8861d5a172e8
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/259460
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Tess Strickland <sstrickl@google.com>
2022-09-16 18:05:00 +00:00
Alexander Markov 3ec7cf9c34 [vm] Record literals
TEST=language/record_literal_test

Issue: https://github.com/dart-lang/sdk/issues/49719
Change-Id: I287586c0adb19fe401d76c7a586133a1fe9f1d1d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/257264
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
2022-09-12 23:08:17 +00:00
Ryan Macnak b6a57b7cf9 [vm] Make use of exception helpers.
TEST=ci
Change-Id: Icdfaef665756bc12e25fba58afcd6cd1bde8525a
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/254760
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Alexander Markov <alexmarkov@google.com>
2022-08-11 18:52:22 +00:00
Ryan Macnak c1e67ac84f [vm] Recognize unmodifiable typed data views.
These types now work with Dart_TypedDataAcquireData.

The presence of these types no longer degrades the performance of typed data indexed loads.

The presence of these types degrades the performance of typed data indexed stores much less. The performance of indexed stores is somewhat regressed if these types were not used.

TEST=ci
Bug: https://github.com/dart-lang/sdk/issues/32028
Bug: https://github.com/dart-lang/sdk/issues/40924
Bug: https://github.com/dart-lang/sdk/issues/42785
Change-Id: Iffad865708501acf96db418985cd5a69bd9afa55
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/254501
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2022-08-11 18:10:48 +00:00
Ryan Macnak 10bf1cfe58 Revert "[vm] Recognize unmodifiabled typed data views."
This reverts commit d1112d37bd.

Reason for revert: b/242043014

Original change's description:
> [vm] Recognize unmodifiabled typed data views.
>
> These types now work with Dart_TypedDataAcquireData.
>
> The presence of these types no longer degrades the performance of typed data indexed loads.
>
> The presence of these types degrades the performance of typed data indexed stores much less. The performance of indexed stores is somewhat regressed if these types were not used.
>
> TEST=ci
> Bug: https://github.com/dart-lang/sdk/issues/32028
> Bug: https://github.com/dart-lang/sdk/issues/40924
> Bug: https://github.com/dart-lang/sdk/issues/42785
> Change-Id: I05ac5c9543f6f61ac37533b9efe511254778caed
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/253700
> Reviewed-by: Aske Simon Christensen <askesc@google.com>
> Reviewed-by: Martin Kustermann <kustermann@google.com>
> Commit-Queue: Ryan Macnak <rmacnak@google.com>

TBR=kustermann@google.com,rmacnak@google.com,askesc@google.com

TEST=ci
Change-Id: I32c1c460fc30c51bc0d42e7cfaafe72bf5630069
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: https://github.com/dart-lang/sdk/issues/32028
Bug: https://github.com/dart-lang/sdk/issues/40924
Bug: https://github.com/dart-lang/sdk/issues/42785
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/254560
Reviewed-by: Siva Annamalai <asiva@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2022-08-10 20:08:22 +00:00
Ryan Macnak d1112d37bd [vm] Recognize unmodifiabled typed data views.
These types now work with Dart_TypedDataAcquireData.

The presence of these types no longer degrades the performance of typed data indexed loads.

The presence of these types degrades the performance of typed data indexed stores much less. The performance of indexed stores is somewhat regressed if these types were not used.

TEST=ci
Bug: https://github.com/dart-lang/sdk/issues/32028
Bug: https://github.com/dart-lang/sdk/issues/40924
Bug: https://github.com/dart-lang/sdk/issues/42785
Change-Id: I05ac5c9543f6f61ac37533b9efe511254778caed
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/253700
Reviewed-by: Aske Simon Christensen <askesc@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2022-08-09 20:57:05 +00:00
Alexander Markov fb7b291886 [vm] Reduce number of callbacks used in sync* functions
This change introduces separate stubs for suspending sync* functions
at start and at yield/yield*. Suspend stub for yield/yield*
no longer calls Dart callback (in order to make it faster).

Also, ReturnSyncStar stub is removed - sync* functions now directly
return false instead of going through the stub.

TEST=ci

Issue: https://github.com/dart-lang/sdk/issues/48378
Change-Id: Iee9a1f48cab2812cf0f9f0e4e6d8e847547e49f7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/250420
Reviewed-by: Slava Egorov <vegorov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
2022-07-12 19:30:12 +00:00
Alexander Markov 77ea9820aa [vm] New implementation of sync* based on suspend/resume stubs
Issue: https://github.com/dart-lang/sdk/issues/48378
Change-Id: I7f4b6b56d914a617dfd7ac724cd4414532073b4c
TEST=ci
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/249141
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Slava Egorov <vegorov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
2022-06-27 18:19:12 +00:00
Alexander Markov af4da780be [vm] New async/async* implementation in JIT mode
The new implementation is based on suspend/resume stubs and doesn't
use desugaring of async functions on kernel AST.

Previously, new implementation of async/async* was only supported in
AOT mode. This change adds all necessary bits for the JIT mode:

 * Suspending variable-length frames (for unoptimized code).
 * Handling of Code and pool pointers in Dart stack frames.
 * OSR.
 * Deoptimization.
 * Hot reload.
 * Debugger.

The new implementation is not enabled in JIT mode yet.

Design doc: go/compact-async-await.
TEST=ci

Issue: https://github.com/dart-lang/sdk/issues/48378
Change-Id: I477d6684bdce7cbc1edb179ae2271ff598b7dcc5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/246081
Reviewed-by: Martin Kustermann <kustermann@google.com>
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Slava Egorov <vegorov@google.com>
2022-06-02 23:39:45 +00:00
Daco Harkes 5380fa5d40 [vm/ffi] Introduce CCallInstr and replace handle instructions
The CCallInstr takes unboxed word-sized integers and does a call to C
without any VM transitions.

This can be used for the following.
1) Leaf runtime entries. This CL removes the EnterHandleScope,
   ExitHandleScope, and AllocateHandle instructions.
2) Compilation of isolate independent code where all definitions in IL
   are unboxed integers.

Currently, the CCallInstr expects all it's arguments and the return type
to be word-sized.

This CL also:
- Adds loadImmediate and CCall with a register for each assembler.
- Adds a CSE pass to force-optimized so that LoadThreadInstr gets de-
  duplicated.

TEST=tests/ffi(_2)/*

Change-Id: I67c6aaa1b7d6aa7d60e274477686a54e5a331216
Cq-Include-Trybots: luci.dart.try:vm-kernel-linux-debug-simriscv64-try,vm-kernel-precomp-linux-debug-simriscv64-try,vm-kernel-nnbd-mac-debug-arm64-try,vm-kernel-nnbd-mac-debug-x64-try,vm-kernel-win-debug-ia32-try,vm-kernel-win-debug-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/246240
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
2022-05-30 20:58:03 +00:00
Alexander Markov 4075e8b3f9 [vm] New async*/yield/yield* implementation based on suspend/resume stubs
TEST=ci
Issue: https://github.com/dart-lang/sdk/issues/48378
Change-Id: I0c2ca9269b2c8f008a79c139a0ce10231996732d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/242923
Reviewed-by: Johnni Winther <johnniwinther@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
2022-05-02 20:53:01 +00:00
Alexander Markov bf4bb95308 [vm] New async/await implementation in the VM, part 2 - vm
The new implementation moves away from desugaring of async
functions on kernel AST, state machine generated in the flow graph and
capturing all local variables in the context.

Instead, async/await is implemented using a few stubs
(InitSuspendableFunction, Suspend, Resume, Return and
AsyncExceptionHandler). The stubs are implemented in a
platform-independent way using (macro-)assembler helpers.
When suspending a function, its frame is copied into a SuspendState
object, and when resuming a function it is copied back onto the stack.
No extra code is generated for accessing local variables.
Callback closures are created lazily on the first await.

Design doc: go/compact-async-await.

Part 1 (kernel): https://dart-review.googlesource.com/c/sdk/+/241842

TEST=ci

Issue: https://github.com/dart-lang/sdk/issues/48378
Change-Id: Ibad757035b7cc438ebdff80b460728b1d3eff1f5
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/242000
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Slava Egorov <vegorov@google.com>
2022-04-29 01:03:50 +00:00
Ryan Macnak 744864c4c5 [vm] Reduce TLS access during runtime allocation.
TEST=ci
Change-Id: Iec212406bc0af93699b08a3c28394551647646b6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/241202
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2022-04-20 21:10:08 +00:00
Ryan Macnak e7b5a63c6c [vm] Rename DRT_StackOverflow to DRT_InterruptOrStackOverflow.
This hopefully makes things less surprising to folks seeing this runtime entry when looking a profile because most programs don't have real stack overflows.

TEST=ci
Change-Id: I6ef610177ad745f5be7a44854e72ebda183f33da
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/235040
Reviewed-by: Siva Annamalai <asiva@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2022-04-13 22:26:13 +00:00
Ryan Macnak 81143e16c4 [vm, gc] Don't perform blocking compactions in response to Dart_NotifyLowMemory.
These GCs usually did not free very much memory but did consume a lot of CPU. They would on low-powered, low-memory devices often take ~1s, during which time the OS might decide the OOM signal wasn't working and kill us before the compaction can complete and free pages. Instead, only release pooled memory.

Also use more appropriate GCReasons in calls of CollectMost/AllGarbage.

TEST=ci
Bug: b/216333343
Change-Id: Ia56b9ca409410f17d40508c69fb1bc9df0ce4028
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/235300
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2022-03-08 22:42:46 +00:00
Alexander Aprelev cb64a64241 [vm/isolate_exit] Ensure ffi code exits if isolate is exiting.
When ffi code calls Dart code that requests the isolate to exit(via Isolate.exit, for example), we ensure that isolate indeed exits on return from ffi call.
This is implemented by introduction of new safepoint bit which, once set, forces ExitSafepoint to propagate unwind error.

TEST=isolate_exit_sandwich_test

Change-Id: I2e8f5ecec7f4e59ae5f99b9525cc566f20d4b6a8
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/219846
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Alexander Aprelev <aam@google.com>
2022-01-08 06:01:08 +00:00
Alexander Aprelev 8f864523ff Reland "[vm/concurrency] Remove --(no-)enable-isolate-groups flag in Dart VM"
This reverts commit 6828fd752e as
internal use of flag that forced the original revert has been removed via 408658160 and
408425059 cls.

TEST=ci

Change-Id: I9d4ae3c01bef938ce6e111afedfdb1ca6525bdac
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/219840
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Alexander Aprelev <aam@google.com>
2021-11-10 15:29:13 +00:00
Emmanuel Pellereau 6828fd752e Revert "[vm/concurrency] Remove --(no-)enable-isolate-groups flag in Dart VM"
This reverts commit f8df8ca78e.

Reason for revert: breaks google3 (b/205519688)

Original change's description:
> [vm/concurrency] Remove --(no-)enable-isolate-groups flag in Dart VM
>
> The --enable-isolate-groups flag has been turned on by-default for
> months now. In this CL we're going to remove the opt-out of this (which
> was possible by explicitly passing --no-enable-isolate-groups to the VM)
>
> TEST=Existing CI. Removes flag and simplifies runtime.
>
> Change-Id: I8706b9e30df437548a81846e75e67a658d6d49d4
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/219480
> Reviewed-by: Alexander Aprelev <aam@google.com>
> Commit-Queue: Martin Kustermann <kustermann@google.com>

# Not skipping CQ checks because original CL landed > 1 day ago.

Change-Id: Iabe6ccda6c184bb183b54a056d5011e657265d1d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/219700
Reviewed-by: Emmanuel Pellereau <emmanuelp@google.com>
Reviewed-by: Aske Simon Christensen <askesc@google.com>
Commit-Queue: Emmanuel Pellereau <emmanuelp@google.com>
2021-11-08 11:12:19 +00:00
Martin Kustermann f8df8ca78e [vm/concurrency] Remove --(no-)enable-isolate-groups flag in Dart VM
The --enable-isolate-groups flag has been turned on by-default for
months now. In this CL we're going to remove the opt-out of this (which
was possible by explicitly passing --no-enable-isolate-groups to the VM)

TEST=Existing CI. Removes flag and simplifies runtime.

Change-Id: I8706b9e30df437548a81846e75e67a658d6d49d4
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/219480
Reviewed-by: Alexander Aprelev <aam@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>
2021-11-05 15:38:13 +00:00
Ryan Macnak fbcacd7c05 Reapply "[vm] Streamline Zones."
Fix imprecision in Zone::SizeInBytes that was finally noticed by vm/cc/AllocateZone because the size of the initial inline buffer changed.

TEST=ci
Bug: https://github.com/dart-lang/sdk/issues/47399
Change-Id: I152d24d03a59b21267a9a24e5d929b51af57af71
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/215980
Reviewed-by: Siva Annamalai <asiva@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2021-10-14 00:10:12 +00:00
Ryan Macnak 472e2bce17 Revert "[vm] Streamline Zones."
This reverts commit b5922e6db4.

Reason for revert: vm/cc/AllocateZone fails on Mac

Original change's description:
> [vm] Streamline Zones.
>
>  - Don't put a HANDLESCOPE right after a StackZone, as there's no state worth restoring
>  - Remove remaining zone bookkeeping dead since e3a9d70591.
>  - Remove unnecessary resetting of handle blocks before zone deletion.
>  - Shrink initial chunk size to make Zone's overall size fit in a faster malloc size class.
>
> TEST=ci
> Change-Id: I920e12f5af93aa71fb876435764c60df485215f9
> Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/212261
> Reviewed-by: Siva Annamalai <asiva@google.com>
> Commit-Queue: Ryan Macnak <rmacnak@google.com>

TBR=rmacnak@google.com,asiva@google.com

Change-Id: Id23dcebb781791616e48e54d2dcd7e58159178bc
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/215943
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2021-10-06 23:44:33 +00:00
Ryan Macnak b5922e6db4 [vm] Streamline Zones.
- Don't put a HANDLESCOPE right after a StackZone, as there's no state worth restoring
 - Remove remaining zone bookkeeping dead since e3a9d70591.
 - Remove unnecessary resetting of handle blocks before zone deletion.
 - Shrink initial chunk size to make Zone's overall size fit in a faster malloc size class.

TEST=ci
Change-Id: I920e12f5af93aa71fb876435764c60df485215f9
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/212261
Reviewed-by: Siva Annamalai <asiva@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2021-10-06 22:22:32 +00:00
Ryan Macnak 5da8050f86 [vm, gc] Move GCType and GCReason out of Heap, making them accessible to Scavenger and PageSpace.
Add a GCReason for store buffer overflow instead of using a separate print.

This is a pure refactoring that doesn't change GC policy.

TEST=ci
Change-Id: Idcd95b0701a36f45ebaa02db2c2fac9a9081d7c6
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/215102
Reviewed-by: Liam Appelbe <liama@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2021-10-04 18:57:19 +00:00
Alexander Aprelev c65556cfc0 [vm/unwind] Ensure no dart api calls happen after unwind error raised.
TEST=DartAPI_EnsureUnwindError*

Change-Id: Ic14e806c34635954cb04a759f5915809dec1ad34
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/214762
Commit-Queue: Alexander Aprelev <aam@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
2021-09-28 21:38:03 +00:00
Ryan Macnak 2f8e129713 [vm, gc] Make the generational barriers in the runtime multi-thread safe.
TEST=ci
Bug: https://github.com/dart-lang/sdk/issues/46909
Change-Id: I85b1cd2a7fe7aa835b2dc6b6232dee412219f3ce
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/212029
Reviewed-by: Siva Annamalai <asiva@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
2021-09-09 01:13:32 +00:00
Alexander Markov 16e8dc257e [vm] Faster double.floor()/ceil()/truncate() in AOT mode (x64, arm64)
1) double.truncate() now simply calls toInt(), omitting
truncateToDouble() call.

2) double.floor() and ceil() are now intrinsified on arm64 and AOT/x64
and generated using DoubleToInteger instruction.

3) DoubleToInteger instruction is extended to support floor and ceil.
On arm64 DoubleToInteger is implemented using fcvtms and fcvtps
instructions. On x64 DoubleToInteger is implemented using roundsd
under a check if it is supported (with a fallback to a stub and a
runtime call).

AOT/x64:
Before: BenchFloor(RunTime): 318.82148549569655 us.
After:  BenchFloor(RunTime): 133.29430189936687 us.

TEST=ci
Closes https://github.com/dart-lang/sdk/issues/46876
Closes https://github.com/dart-lang/sdk/issues/46650

Change-Id: I16ca18faf97954f8e8e25f0b72a2bbfac5bdc672
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/212381
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Slava Egorov <vegorov@google.com>
2021-09-07 19:52:04 +00:00
Alexander Aprelev 78116e1d2c [vm/switchable_calls] Clean up assert in monomorphic miss jit handler.
The check for number of isolates was racy because isolates might be exiting, number of isolates in the group going down as we enter ic cache miss runtime handler.
This caused flaky failures on debug buildbots.

TEST=ci
Fixes https://github.com/dart-lang/sdk/issues/47132

Change-Id: Ie78a80fecb30d2cc40635acd465078cb0f22a234
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/212487
Commit-Queue: Alexander Aprelev <aam@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
2021-09-07 16:24:24 +00:00
Daco Harkes f21b7cafbc [vm/ffi] Adds param number in trampoline null error
Before: `NoSuchMethodError: The method 'FfiTrampoline' was called on
null.`
After: `Invalid argument(s): argument value for ':ffi_param2' is null`.

Makes the ArgumentNullError RTE lookup the name of the argument in the
code source map when reporting a null argument.

Makes the FFI call arguments and FFI callbacks use kArgumentError
instead of the default kNoSuchMethod so that we target this RTE instead.

This changes the Error type from `NoSuchMethodError` to `ArgumentError`.
Because `Error`s should not be caught [1], this is fine.

Since FFI trampolines are created from type arguments, the arguments do
not have names. The arguments are assigned names programmatically. See
the related bug.

Also, this CL cleans up the SourcePosition of the `CheckNullOptimized`,
it was never passed.

[1] https://dart.dev/guides/language/effective-dart/usage#dont-explicitly-catch-error-or-types-that-implement-it

TEST=tests/ffi/function_test.dart

Closes: https://github.com/dart-lang/sdk/issues/47094
Bug: https://github.com/dart-lang/sdk/issues/36780

Change-Id: I15e7de4d026e034bde0eda3ba7fe3785f0da5057
Cq-Include-Trybots: luci.dart.try:vm-precomp-ffi-qemu-linux-release-arm-try,vm-ffi-android-debug-arm-try,vm-kernel-precomp-dwarf-linux-product-x64-try,vm-kernel-precomp-linux-debug-x64-try,app-kernel-linux-debug-x64-try,vm-kernel-reload-rollback-linux-debug-x64-try,vm-kernel-reload-linux-debug-x64-try,vm-ffi-android-debug-arm64-try,vm-kernel-nnbd-mac-debug-x64-try,vm-kernel-precomp-nnbd-linux-debug-x64-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/212462
Commit-Queue: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Clement Skau <cskau@google.com>
Reviewed-by: Tess Strickland <sstrickl@google.com>
2021-09-04 07:22:03 +00:00
Alexander Markov 307bc3ef2c [vm] Faster double.toInt() in AOT mode
double.toInt() micro-benchmark on AOT/x64:
Before: BenchToInt(RunTime): 438.67258771929824 us.
After:  BenchToInt(RunTime): 118.8603434955726 us.

double.floor() micro-benchmark on AOT/x64:
Before: BenchFloor(RunTime): 537.2132688691916 us.
After:  BenchFloor(RunTime): 321.2052352657781 us.

TEST=ci
Issue https://github.com/dart-lang/sdk/issues/46876
Issue https://github.com/dart-lang/sdk/issues/46650

Change-Id: Id37c827bceb7f374ae5b91b36871ccf0d9e92441
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/211620
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Alexander Markov <alexmarkov@google.com>
2021-09-01 16:57:59 +00:00