[all-commits] [llvm/llvm-project] 445f9c: [llvm-cov] Fix undercounting lines wrapped by gap ...

[Maksim Levental via All-commits]

  Branch: refs/heads/users/makslevental/coverage-v2
  Home:   https://github.com/llvm/llvm-project
  Commit: 445f9cc8cd0e8fdec994286bfb47d7afcf6d7cc0
      https://github.com/llvm/llvm-project/commit/445f9cc8cd0e8fdec994286bfb47d7afcf6d7cc0
  Author: makslevental <m_levental at apple.com>
  Date:   2026-06-13 (Sat, 13 Jun 2026)

  Changed paths:
    M llvm/lib/ProfileData/Coverage/CoverageMapping.cpp

  Log Message:
  -----------
  [llvm-cov] Fix undercounting lines wrapped by gap regions

Lines with no region entry that are wrapped by a gap region were
reported with the gap's count (often 0), even when non-gap segments
on the line indicated the line was actually executed. This caused
llvm-cov to undercount coverage for lines that continue a covered
region after a gap (e.g., closing braces, simple statements following
an if/else).

Check for non-gap segments with HasCount on such lines and use their
max count instead of the gap region's count.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply at anthropic.com>



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