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We compile each test file to LLVM IR assembly, and then pass that IR to a dedicated program that can decode LLVM coverage maps and print them in a more human-readable format. We can then check that output against known-good snapshots. This test suite has some advantages over the existing `run-coverage` tests: - We can test coverage instrumentation without needing to run target binaries. - We can observe subtle improvements/regressions in the underlying coverage mappings that don't make a visible difference to coverage reports.
33 lines
1022 B
Plaintext
33 lines
1022 B
Plaintext
Function name: long_and_wide::far_function
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Raw bytes (10): 0x[01, 01, 00, 01, 01, 96, 01, 01, 00, 15]
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Number of files: 1
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- file 0 => global file 1
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Number of expressions: 0
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Number of file 0 mappings: 1
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- Code(Counter(0)) at (prev + 150, 1) to (start + 0, 21)
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Function name: long_and_wide::long_function
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Raw bytes (10): 0x[01, 01, 00, 01, 01, 10, 01, 84, 01, 02]
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Number of files: 1
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- file 0 => global file 1
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Number of expressions: 0
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Number of file 0 mappings: 1
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- Code(Counter(0)) at (prev + 16, 1) to (start + 132, 2)
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Function name: long_and_wide::main
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Raw bytes (9): 0x[01, 01, 00, 01, 01, 07, 01, 04, 02]
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Number of files: 1
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- file 0 => global file 1
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Number of expressions: 0
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Number of file 0 mappings: 1
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- Code(Counter(0)) at (prev + 7, 1) to (start + 4, 2)
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Function name: long_and_wide::wide_function
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Raw bytes (10): 0x[01, 01, 00, 01, 01, 0e, 01, 00, 8b, 01]
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Number of files: 1
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- file 0 => global file 1
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Number of expressions: 0
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Number of file 0 mappings: 1
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- Code(Counter(0)) at (prev + 14, 1) to (start + 0, 139)
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