[all-commits] [llvm/llvm-project] f5cd18: [Coverage] Introduce `getBranchCounterPair()`. NFC...

[NAKAMURA Takumi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f5cd181ffbb7cb61d582fe130d46580d5969d47a
      https://github.com/llvm/llvm-project/commit/f5cd181ffbb7cb61d582fe130d46580d5969d47a
  Author: NAKAMURA Takumi <geek4civic at gmail.com>
  Date:   2025-01-09 (Thu, 09 Jan 2025)

  Changed paths:
    M clang/lib/CodeGen/CoverageMappingGen.cpp

  Log Message:
  -----------
  [Coverage] Introduce `getBranchCounterPair()`. NFC. (#112702)

This aggregates the generation of branch counter pair as `ExecCnt` and
`SkipCnt`, to aggregate `CounterExpr::subtract`. At the moment:

- This change preserves the behavior of
`llvm::EnableSingleByteCoverage`. Almost of SingleByteCoverage will be
cleaned up by coming commits.

- `IsCounterEqual(Out, Par)` is introduced instead of
`Counter::operator==`. Tweaks would be required for the comparison for
additional counters.


https://discourse.llvm.org/t/rfc-integrating-singlebytecoverage-with-branch-coverage/82492



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