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coverage: Discard spans that fill the entire function body

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When we try to extract coverage-relevant spans from MIR, sometimes we see MIR
statements/terminators whose spans cover the entire function body. Those spans
tend to be unhelpful for coverage purposes, because they often represent
compiler-inserted code, e.g. the implicit return value of `()`.
This commit is contained in:
Zalathar 2024-02-15 18:12:27 +11:00
parent 75af3c58f9
commit cd9021e8cb
10 changed files with 29 additions and 33 deletions
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8
tests/coverage/unicode.cov-map
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@ -27,14 +27,6 @@ Number of file 0 mappings: 9
- Code(Expression(5, Add)) at (prev + 2, 5) to (start + 1, 2)
= (c4 + ((((c0 + c1) - c1) - c2) + c3))
Function name: unicode::サビ
Raw bytes (9): 0x[01, 01, 00, 01, 01, 1e, 14, 00, 18]
Number of files: 1
- file 0 => global file 1
Number of expressions: 0
Number of file 0 mappings: 1
- Code(Counter(0)) at (prev + 30, 20) to (start + 0, 24)
Function name: unicode::他 (unused)
Raw bytes (9): 0x[01, 01, 00, 01, 00, 1e, 19, 00, 25]
Number of files: 1