mirror of https://github.com/dart-lang/sdk synced 2024-09-16 00:19:48 +00:00

Find a file

Tess Strickland 49f998dc31 [vm/compiler] Handle hash caches in the InstantiateTypeArguments stubs. Lower the threshold for converting from a linear to a hash-based cache on most architectures from 500 to 10. Due to register pressure, the InstantiateTypeArguments stub on IA32 continues to go to the runtime for hash caches, and so we do not lower the threshold for converting to a hash-based cache there. The following are benchmark results for those benchmark that use enough Instantiations to trigger the use of hash-based caches. In the following tables, "Results 1" denotes the benchmark results from only this change, whereas "Results 2" include from comparing to the results prior to `4f925105cf`, when only linear caches were used. Dart AOT: * InstantiateTypeArguments.Instantiate100 Arch \| CPU \| Results 1 \| Results 2 -------\|----------------\|----------------------- ARM \| Odroid-C2 \| 382.8% \| 381.5% ARM \| Raspberry Pi 4 \| 486.7% \| 449.2% ARM64 \| Odroid-C2 \| 328.1% \| 372.8% ARM64 \| Raspberry Pi 4 \| 1283% \| 1281% ARM64C \| Raspberry Pi 4 \| 2353% \| 2811% X64 \| Intel Xeon \| 568.7% \| 584.9% * InstantiateTypeArguments.Instantiate1000 Arch \| CPU \| Results 1 \| Results 2 -------\|----------------\|------------------------ ARM \| Odroid-C2 \| 743.7% \| 3821% ARM \| Raspberry Pi 4 \| 486.7% \| 3218% ARM64 \| Odroid-C2 \| 584.7% \| 3222% ARM64 \| Raspberry Pi 4 \| 430.7% \| 8172% ARM64C \| Raspberry Pi 4 \| 491.4% \| 16699% X64 \| Intel Xeon \| 954.1% \| 5528% Dart JIT: * InstantiateTypeArguments.Instantiate100 Arch \| CPU \| Results 1 \| Results 2 -------\|----------------\|----------------------- ARM \| Raspberry Pi 4 \| 315.7% \| 295.1% ARM64 \| Raspberry Pi 4 \| 1070% \| 1058% ARM64C \| Raspberry Pi 4 \| 1769% \| 2095% X64 \| Intel Xeon \| 507.4% \| 496.2% * InstantiateTypeArguments.Instantiate1000 Arch \| CPU \| Results 1 \| Results 2 -------\|----------------\|----------------------- ARM \| Raspberry Pi 4 \| 565.2% \| 2550% ARM64 \| Raspberry Pi 4 \| 406.8% \| 7375% ARM64C \| Raspberry Pi 4 \| 379.6% \| 12996% X64 \| Intel Xeon \| 807.9% \| 4459% During work on this change, an issue was found where cache lookups in the stub on ARM64C always failed and went to runtime, even with the old linear-only caches, hence the much larger performance gains in those rows above. TEST=vm/cc/TypeArguments_Cache_{Some,Many}Instantiations Fixes: https://github.com/dart-lang/sdk/issues/48344 Change-Id: I3d29566ba0582502954c9fc59626ceb8fd40317a Cq-Include-Trybots: luci.dart.try:vm-kernel-precomp-dwarf-linux-product-x64-try,vm-kernel-precomp-linux-product-x64-try,vm-kernel-precomp-linux-release-x64-try,vm-kernel-precomp-nnbd-mac-release-arm64-try,vm-kernel-precomp-nnbd-linux-release-simarm_x64-try,vm-kernel-precomp-linux-release-simarm-try,vm-kernel-precomp-nnbd-linux-release-x64-try,vm-kernel-precomp-nnbd-linux-release-simarm64-try,vm-kernel-precomp-nnbd-linux-debug-simriscv64-try,vm-kernel-precomp-tsan-linux-release-x64-try,vm-kernel-tsan-linux-release-x64-try,vm-kernel-precomp-linux-debug-x64c-try,vm-kernel-nnbd-linux-debug-simriscv64-try,vm-kernel-linux-release-simarm-try,vm-kernel-linux-release-simarm64-try,vm-kernel-linux-release-ia32-try,vm-kernel-nnbd-linux-release-simarm-try,vm-kernel-nnbd-linux-release-simarm64-try,vm-kernel-nnbd-linux-release-ia32-try,vm-kernel-nnbd-mac-release-arm64-try,vm-kernel-linux-debug-x64c-try Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/270702 Reviewed-by: Ryan Macnak <rmacnak@google.com> Commit-Queue: Tess Strickland <sstrickl@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>		2022-12-01 10:15:58 +00:00
.dart_tool	[infra] re-land work to auto-generate .dart_tool/package_config.json	2022-04-12 17:21:02 +00:00
.github	[infra] update the scorecards-analysis.yml file	2022-11-17 19:52:57 +00:00
benchmarks	[3.0 alpha] Use equals for default values in the SDK	2022-11-30 10:33:31 +00:00
build	[vm] Avoid using -fno-exceptions globally in GN builds.	2022-11-18 09:42:48 +00:00
docs	Add a link to the announce group	2022-07-21 09:45:06 +00:00
pkg	[cfe] Initial support for view methods	2022-12-01 09:54:40 +00:00
runtime	[vm/compiler] Handle hash caches in the InstantiateTypeArguments stubs.	2022-12-01 10:15:58 +00:00
samples	Fix grammar	2022-11-21 20:07:29 +00:00
sdk	Add PathExistsException and PathAccessException FileSystemException subclasses.	2022-11-30 04:54:52 +00:00
tests	[cfe] Allow mixin 'on' behaviour for sealed supertypes.	2022-12-01 01:18:40 +00:00
third_party	[dart2wasm] Remove unnecessary rebase_path when running list_sources.py	2022-11-19 22:53:26 +00:00
tools	[spec_parser] Add OWNERS	2022-11-30 14:01:10 +00:00
utils	[dart2js] Add mmap-based read to dart2js for linux systems.	2022-11-18 21:40:38 +00:00
.clang-format
.gitattributes	[web] rename suite dart2js -> web.	2021-02-04 23:11:32 +00:00
.gitconfig
.gitignore	[test_runner] Create --write-logs dir, add default dir to .gitignore	2022-11-15 09:59:08 +00:00
.gn	[infra] Migrate scripts to python3	2021-04-15 10:10:20 +00:00
.mailmap	Fixed various typos in a lot of files	2022-07-25 12:21:59 +00:00
.style.yapf
.vpython
AUTHORS	Simplify the license situation	2022-09-14 21:06:22 +00:00
BUILD.gn	[dart2wasm] Add building binaryen as part of our GN build	2022-11-18 10:58:54 +00:00
CHANGELOG.md	Add CHANGELOG entry for 50383	2022-11-30 09:40:40 +00:00
codereview.settings	[infra] Default presubmits to use python3	2021-08-24 08:20:47 +00:00
CONTRIBUTING.md	Add more details to contributing docs	2022-03-16 07:56:58 +00:00
DEPS	pull `unrelated_type_equality_checks` fix	2022-11-30 23:31:45 +00:00
LICENSE	Update LICENSE	2021-04-08 07:57:10 +00:00
OWNERS	[owners] update the top-level owners file	2022-11-11 21:03:52 +00:00
PATENT_GRANT	Rename patent file	2019-08-16 12:03:17 +00:00
PRESUBMIT.py	Make presubmit on Dart files check for default value separator.	2022-09-09 12:34:34 +00:00
README.dart-sdk	Updates to analyze_snapshot tool	2022-08-23 12:18:00 +00:00
README.md	master => main	2021-09-10 08:02:49 +00:00
sdk_args.gni	Fix typos	2022-06-15 11:08:28 +00:00
SECURITY.md	Add link to published advisories	2022-02-08 19:45:07 +00:00
WATCHLISTS	[dart2wasm] Update WATCHLISTS for dart2wasm-team@.	2022-11-10 17:00:40 +00:00

README.md

Dart

A client-optimized language for fast apps on any platform

Dart is:

Optimized for UI: Develop with a programming language specialized around the needs of user interface creation.
Productive: Make changes iteratively: use hot reload to see the result instantly in your running app.
Fast on all platforms: Compile to ARM & x64 machine code for mobile, desktop, and backend. Or compile to JavaScript for the web.

Dart's flexible compiler technology lets you run Dart code in different ways, depending on your target platform and goals:

Dart Native: For programs targeting devices (mobile, desktop, server, and more), Dart Native includes both a Dart VM with JIT (just-in-time) compilation and an AOT (ahead-of-time) compiler for producing machine code.
Dart Web: For programs targeting the web, Dart Web includes both a development time compiler (dartdevc) and a production time compiler (dart2js).

License & patents

Dart is free and open source.

See LICENSE and PATENT_GRANT.

Using Dart

Visit dart.dev to learn more about the language, tools, and to find codelabs.

Browse pub.dev for more packages and libraries contributed by the community and the Dart team.

Our API reference documentation is published at api.dart.dev, based on the stable release. (We also publish docs from our beta and dev channels, as well as from the primary development branch).

Building Dart

If you want to build Dart yourself, here is a guide to getting the source, preparing your machine to build the SDK, and building.

There are more documents on our wiki.

Contributing to Dart

The easiest way to contribute to Dart is to file issues.

You can also contribute patches, as described in Contributing.