Reimplement member usage tracking

We now track member usage in terms of static, dynamic and super access
for reads, writes and invocations. The information collected during
closed world computation is now the basis for the potential member usage
in codegen, thus ensuring that we cannot conclude in codegen that for
instance a field is read dynamically when the closed world knows that
it is never read dynamically.

Closes #36516

Change-Id: I3a1cb87c71268c34bcd67e14a035d9d1be324ab0
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/100840
Commit-Queue: Johnni Winther <johnniwinther@google.com>
Reviewed-by: Sigmund Cherem <sigmund@google.com>
19 files changed
tree: 1ed5dfb398488364274aee52fcb2f7aad42a77f7
  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. DEPS
  28. LICENSE
  29. PATENTS
  30. PRESUBMIT.py
  31. README.dart-sdk
  32. README.md
  33. WATCHLISTS
README.md

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