[all-commits] [llvm/llvm-project] c087be: Introduce mcdc::TVIdxBuilder (LLVM side, NFC) (#80...

[NAKAMURA Takumi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c087bebb02ef35021547c6ddf0a3fdf1cbc8ad17
      https://github.com/llvm/llvm-project/commit/c087bebb02ef35021547c6ddf0a3fdf1cbc8ad17
  Author: NAKAMURA Takumi <geek4civic at gmail.com>
  Date:   2024-02-26 (Mon, 26 Feb 2024)

  Changed paths:
    M llvm/include/llvm/ProfileData/Coverage/CoverageMapping.h
    M llvm/lib/ProfileData/Coverage/CoverageMapping.cpp
    M llvm/unittests/ProfileData/CoverageMappingTest.cpp

  Log Message:
  -----------
  Introduce mcdc::TVIdxBuilder (LLVM side, NFC) (#80676)

This is a preparation of incoming Clang changes (#82448) and just checks
`TVIdx` is calculated correctly. NFC.

`TVIdxBuilder` calculates deterministic Indices for each Condition Node.
It is used for `clang` to emit `TestVector` indices (aka ID) and for
`llvm-cov` to reconstruct `TestVectors`.

This includes the unittest `CoverageMappingTest.TVIdxBuilder`.

See also
https://discourse.llvm.org/t/rfc-coverage-new-algorithm-and-file-format-for-mc-dc/76798



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