Revert "[vm/compiler] Optimize switch statements"

This reverts commit f5228127f8570be359c2645b8c315bfafe9b0ce3.

Reason for revert: causes a VM crash, see b/242964932 (the test is also publicly available at

Original change's description:
> [vm/compiler] Optimize switch statements
> Switch statements that either contain only integers or only enum values of the same type can be optimized.
> Depending on the number of switch expressions and the number of holes that the range of switch expressions contains, either a binary search or a jump table is used.
> TEST=runtime/test/vm/dart{,_2}/optimized_switch
> TEST=tests/language{,_2}/switch
> Fixes:
> Co-authored-by: Gabriel Terwesten
> Change-Id: I62dcdb7843107f03de7e468c60b4db52ec78f676
> Reviewed-on:
> Reviewed-by: Alexander Markov <>
> Commit-Queue: Alexander Markov <>,,

Change-Id: I8c673ea70e7ed91dffb3674e7dcb4aaa0611e978
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-by: Slava Egorov <>
Reviewed-by: Ilya Yanok <>
Commit-Queue: Slava Egorov <>
30 files changed
tree: 642b383dc4fa6246ee4639e38f970d34ba8c0934
  1. .dart_tool/
  2. .github/
  3. benchmarks/
  4. build/
  5. docs/
  6. pkg/
  7. runtime/
  8. samples/
  9. samples-dev/
  10. samples_2/
  11. sdk/
  12. tests/
  13. third_party/
  14. tools/
  15. utils/
  16. .clang-format
  17. .gitattributes
  18. .gitconfig
  19. .gitignore
  20. .gn
  21. .mailmap
  22. .style.yapf
  23. .vpython
  27. codereview.settings
  29. DEPS
  31. OWNERS
  34. README.dart-sdk
  36. sdk_args.gni


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