Reapply "[BOLT] Add --pad-funcs-before=func:n (#117924)" (#121918)

- **Reapply "[BOLT] Add --pad-funcs-before=func:n (#117924)"**
- **[BOLT] Fix --pad-funcs{,-before} state misinteraction**

When --pad-funcs-before was introduced, it introduced a bug whereby the
first one to get parsed could influence the other.

Ensure that each has its own state and test that they don't interact in
this manner by testing how the `_subsequent` symbol moves when both
arguments are supplied with different padding values.

Fixed by having a function (and static state) for each of before/after.
3 files changed
tree: f658ef0445a7ec5057170279737f4ce86fa6c253
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. libc/
  11. libclc/
  12. libcxx/
  13. libcxxabi/
  14. libunwind/
  15. lld/
  16. lldb/
  17. llvm/
  18. llvm-libgcc/
  19. mlir/
  20. offload/
  21. openmp/
  22. polly/
  23. pstl/
  24. runtimes/
  25. third-party/
  26. utils/
  27. .clang-format
  28. .clang-tidy
  29. .git-blame-ignore-revs
  30. .gitattributes
  31. .gitignore
  32. .mailmap
  33. CODE_OF_CONDUCT.md
  34. CONTRIBUTING.md
  35. LICENSE.TXT
  36. pyproject.toml
  37. README.md
  38. SECURITY.md
README.md

The LLVM Compiler Infrastructure

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