[all-commits] [llvm/llvm-project] 702a2b: [Coverage] Rework !SystemHeadersCoverage (#91446)

[NAKAMURA Takumi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 702a2b627ff4b2a5d330a7bd0d3f7cadaff0b4ed
      https://github.com/llvm/llvm-project/commit/702a2b627ff4b2a5d330a7bd0d3f7cadaff0b4ed
  Author: NAKAMURA Takumi <geek4civic at gmail.com>
  Date:   2024-05-20 (Mon, 20 May 2024)

  Changed paths:
    M clang/lib/CodeGen/CoverageMappingGen.cpp
    A clang/test/CoverageMapping/mcdc-system-headers.cpp

  Log Message:
  -----------
  [Coverage] Rework !SystemHeadersCoverage (#91446)

- Introduce `LeafExprSet`,
  - Suppress traversing LAnd and LOr expr under system headers.
- Handle LAnd and LOr as instrumented leaves to override
`!isInstrumentedCondition(C)`.
- Replace Loc with FileLoc if it is expanded with system headers.

Fixes #78920



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