Jens Johansen
1a218c0103
This CL adds two tools * A dill extractor tool which extracts the source files inside the dill to a new directory, trying to recrease the package config too so the sources can be compiled again. Thought as being useful for doing benchmarks between the CFE and the analyzer to make sure they look at the exact same source files. No more. No less. * A CFE compile entry point that compiles all files in a directory. Again thought as being useful to compare the CFE with the Analyzer. Additionally it introduces "--gcs=<int>" to `benchmarker.dart` so it can do multiple runs and do statistics on combined gc times. Usage example: ``` $ out/ReleaseX64/dart pkg/front_end/tool/compile.dart pkg/front_end/tool/compile.dart $ out/ReleaseX64/dart-sdk/bin/dart pkg/kernel/bin/dill_extractor.dart pkg/front_end/tool/compile.dart.dill /tmp/extracted_compile_dart_compile Done. Wrote 687 source files. $ out/ReleaseX64/dart-sdk/bin/dart compile aot-snapshot pkg/front_end/tool/compile_files_in_folders.dart Generated: [...]/pkg/front_end/tool/compile_files_in_folders.aot $ out/ReleaseX64/dart-sdk/bin/dart compile aot-snapshot pkg/analyzer_cli/bin/analyzer.dart Generated: [...]/pkg/analyzer_cli/bin/analyzer.aot $ time out/ReleaseX64/dart-sdk/bin/dartaotruntime pkg/front_end/tool/compile_files_in_folders.aot /tmp/extracted_compile_dart_compile/ Got 626 libraries. Finished in 0:00:03.496817 real 0m3.530s user 0m4.985s sys 0m0.257s $ time out/ReleaseX64/dart-sdk/bin/dartaotruntime pkg/analyzer_cli/bin/analyzer.aot /tmp/extracted_compile_dart_compile/ Analyzing /tmp/extracted_compile_dart_compile... warning • Target of URI doesn't exist: 'package:compiler/src/io/source_file.dart'. • package:_fe_analyzer_shared/src/scanner/utf8_bytes_scanner.dart:5:16 • uri_does_not_exist_in_doc_import 1 warning found. real 0m8.479s user 0m9.997s sys 0m1.048s $ out/ReleaseX64/dart pkg/front_end/tool/benchmarker.dart --silent --iterations=10 --gcs=5 --snapshot=pkg/front_end/tool/compile_files_in_folders.aot --snapshot=pkg/analyzer_cli/bin/analyzer.aot --arguments="/tmp/extracted_compile_dart_compile/" Will now run 10 iterations with 2 snapshots. .............................. Comparing snapshot #1 (compile_files_in_folders.aot) with snapshot #2 (analyzer.aot) msec task-clock:u: 141.1012% +/- 1.5550% (6281.55 +/- 69.22) (4451.81 -> 10733.36) page-faults:u: 47.5414% +/- 0.7786% (45602.90 +/- 746.84) (95922.50 -> 141525.40) cycles:u: 119.3182% +/- 1.5751% (22131655652.90 +/- 292155654.08) (18548436164.50 -> 40680091817.40) instructions:u: 140.2463% +/- 0.0340% (30410953910.60 +/- 7375789.67) (21683959961.20 -> 52094913871.80) branch-misses:u: 97.9816% +/- 7.3049% (73071988.00 +/- 5447773.30) (74577266.40 -> 147649254.40) seconds time elapsed: 141.0789% +/- 1.5479% (6.28 +/- 0.07) (4.45 -> 10.74) seconds user: 124.4165% +/- 1.8322% (5.31 +/- 0.08) (4.26 -> 9.57) seconds sys: 521.0422% +/- 17.4291% (0.98 +/- 0.03) (0.19 -> 1.16) Comparing GC: Combined GC time: 63.8901% +/- 1.2946% (1008.76 +/- 20.44) (1578.90 -> 2587.66) ``` (note that benchmarker passes `--deterministic` and limits the run to one cpu, both of which (potentially) makes it slower --- which is why the stats say 4.45 s instead of ~3.53 s and 10.74 s instead of ~8.48 s) Change-Id: I785620ce40af11ca1f7b6c88a0ac863b2200f7d3 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/449180 Reviewed-by: Johnni Winther <johnniwinther@google.com> Commit-Queue: Jens Johansen <jensj@google.com>
Dart Kernel
Dart Kernel is a small high-level language derived from Dart. It is designed for use as an intermediate format for whole-program analysis and transformations, and to be consumed by codegen and execution backends.
The kernel language has an in-memory representation in Dart and can be serialized as binary or text.
Both the kernel language and its implementations are unstable and are under development.
This package contains the Dart part of the implementation and contains:
- A transformable IR for the kernel language
- Serialization of kernel code
Note: The APIs in this package are in an early state; developers should be careful about depending on this package. In particular, there is no semver contract for release versions of this package. Please depend directly on individual versions.
See ast.dart for the in-memory IR, or binary.md for a description of the binary format. For now, the textual format is very ad-hoc and cannot be parsed back in.