[PATCH] D54266: [llvm-cov] Add lcov tracefile export format.

[Tony Allevato via Phabricator via llvm-commits]

allevato created this revision.
allevato added reviewers: Dor1s, vsk.
Herald added subscribers: llvm-commits, mgorny.

lcov tracefiles are used by various coverage reporting tools and build
systems (e.g., Bazel). It is a simple text-based format to parse and
more convenient to use than the JSON export format, which needs
additional processing to map regions/segments back to line numbers.

It's a little unfortunate that "text" format is now overloaded to refer
specifically to JSON for export, but I wanted to avoid making any
breaking changes to the UI of the llvm-cov tool at this time.


Repository:
  rL LLVM

https://reviews.llvm.org/D54266

Files:
  test/tools/llvm-cov/showLineExecutionCounts-lcov.test
  tools/llvm-cov/CMakeLists.txt
  tools/llvm-cov/CodeCoverage.cpp
  tools/llvm-cov/CoverageExporterLcov.cpp
  tools/llvm-cov/CoverageExporterLcov.h
  tools/llvm-cov/CoverageViewOptions.h
  tools/llvm-cov/SourceCoverageView.cpp

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