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Add support for LLVM coverage mapping format versions 5 and 6 This PR cherry-pick's Swatinem's initial commit in unsubmitted PR #90047. My additional commit augments Swatinem's great starting point, but adds full support for LLVM Coverage Mapping Format version 6, conditionally, if compiling with LLVM 13. Version 6 requires adding the compilation directory when file paths are relative, and since Rustc coverage maps use relative paths, we should add the expected compilation directory entry. Note, however, that with the compilation directory, coverage reports from `llvm-cov show` can now report file names (when the report includes more than one file) with the full absolute path to the file. This would be a problem for test results, but the workaround (for the rust coverage tests) is to include an additional `llvm-cov show` parameter: `--compilation-dir=.` |
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llvm-wrapper | ||
src | ||
build.rs | ||
Cargo.toml |