Be more verbose in loops etc in kernel

Benchmarks have shown that old-style for-loops are faster than for-in
for instance.

Golem says

ia32

whole stack (i.e. including utf8 and change to VariableIndexer)

AstToBinaryP90 (Intel Core i5)	6.617% (0.4 noise)
AstToBinary (Intel Xeon)	5.158% (0.4 noise)
AstToBinaryP90 (Intel Xeon)	5.104% (0.4 noise)
AstToBinaryP50 (Intel Xeon)	5.148% (0.4 noise)
AstToBinary (Intel Core i5)	6.579% (0.4 noise)
AstToBinaryP50 (Intel Core i5)	6.741% (0.4 noise)

by itself (i.e. compared to a build with utf8 and change to VariableIndexer)

AstToBinaryP90 (Intel Core i5)	0.7724% (0.0 noise)
AstToBinaryP50 (Intel Core i5)	0.7848% (0.0 noise)
AstToBinary (Intel Core i5)	0.8559% (0.0 noise)
AstToBinaryP90 (Intel Xeon)	0.7730% (0.1 noise)
AstToBinaryP50 (Intel Xeon)	0.8195% (0.1 noise)
AstToBinary (Intel Xeon)	0.9319% (0.1 noise)



x64

whole stack (i.e. including utf8 and change to VariableIndexer)

AstToBinaryP90 (Intel Core i5)	5.555% (0.2 noise)
AstToBinaryP50 (Intel Xeon)	6.352% (0.4 noise)
AstToBinaryP50 (Intel Core i5)	5.395% (0.5 noise)
AstToBinary (Intel Xeon)	6.928% (0.5 noise)
AstToBinaryP90 (Intel Xeon)	7.180% (0.5 noise)
AstToBinary (Intel Core i5)	5.824% (0.5 noise)

by itself  (i.e. compared to a build with utf8 and change to VariableIndexer)

AstToBinaryP90 (Intel Core i5)	0.1039% (0.0 noise)
AstToBinaryP50 (Intel Core i5)	0.6154% (0.0 noise)
AstToBinary (Intel Core i5)	0.7640% (0.1 noise)
AstToBinaryP50 (Intel Xeon)	1.268% (0.1 noise)
AstToBinary (Intel Xeon)	1.457% (0.1 noise)
AstToBinaryP90 (Intel Xeon)	1.512% (0.1 noise)



Change-Id: If091a3a01f2fe6574712946a01644413033739b6
Reviewed-on: https://dart-review.googlesource.com/c/85341
Commit-Queue: Jens Johansen <jensj@google.com>
Reviewed-by: Peter von der Ahé <ahe@google.com>
5 files changed
tree: 7e0154b7c5e462e5518bd5318fb376dbdcd4dfa7
  1. .github/
  2. build/
  3. client/
  4. docs/
  5. pkg/
  6. runtime/
  7. samples/
  8. samples-dev/
  9. sdk/
  10. tests/
  11. third_party/
  12. tools/
  13. utils/
  14. .clang-format
  15. .gitattributes
  16. .gitconfig
  17. .gitignore
  18. .gn
  19. .mailmap
  20. .packages
  21. .vpython
  22. AUTHORS
  23. BUILD.gn
  24. CHANGELOG.md
  25. codereview.settings
  26. CONTRIBUTING.md
  27. dartdoc_options.yaml
  28. DEPS
  29. LICENSE
  30. PATENTS
  31. PRESUBMIT.py
  32. README.dart-sdk
  33. README.md
  34. WATCHLISTS
README.md

Dart

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Using Dart

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

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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.

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You can also contribute patches, as described in Contributing.

License & patents

See LICENSE and PATENTS.