[vm] Fix MakeUnusedSpaceTraversable in the 'Instance' filler case

Object::MakeUnusedSpaceTraversable fills leftover with Instance
if leftover is less than TypedData::InstanceSize(0). This code is
outdated and was not working as the smallest TypedData is just
2 words. This CL updates this code to prepare for future TypedData
changes.

Also, test vm/cc/GrowableObjectArray is changed to be more flexible wrt
sizes of TypedData instances.

Change-Id: I32e21d5038163590ba618d8525aacd17e88800d9
Reviewed-on: https://dart-review.googlesource.com/c/79921
Commit-Queue: Alexander Markov <alexmarkov@google.com>
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Auto-Submit: Alexander Markov <alexmarkov@google.com>
Reviewed-by: Ryan Macnak <rmacnak@google.com>
3 files changed
tree: 4dcd7ba7e1012082d4b59516091626c87d73e899
  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

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