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coverage. Adapt to mcdc mapping formats introduced by llvm 19

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zhuyunxing 2024-07-25 15:23:35 +08:00
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commit 6e3e19f714
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68
tests/coverage/mcdc/condition-limit.coverage
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@ -4,73 +4,53 @@
LL| |//@ compile-flags: -Zcoverage-options=mcdc
LL| |//@ llvm-cov-flags: --show-branches=count --show-mcdc
LL| |
LL| |// Check that MC/DC instrumentation can gracefully handle conditions that
LL| |// exceed LLVM's limit of 6 conditions per decision.
LL| |//
LL| |// (The limit is enforced in `compiler/rustc_mir_build/src/build/coverageinfo/mcdc.rs`.)
LL| |
LL| 1|fn good() {
LL| 1| // With only 6 conditions, perform full MC/DC instrumentation.
LL| 1| let [a, b, c, d, e, f] = <[bool; 6]>::default();
LL| 1| if a && b && c && d && e && f {
^0 ^0 ^0 ^0 ^0
LL| 2|fn accept_7_conditions(bool_arr: [bool; 7]) {
LL| 2| let [a, b, c, d, e, f, g] = bool_arr;
LL| 2| if a && b && c && d && e && f && g {
^1 ^1 ^1 ^1 ^1 ^1
------------------
| Branch (LL:8): [True: 0, False: 1]
| Branch (LL:13): [True: 0, False: 0]
| Branch (LL:18): [True: 0, False: 0]
| Branch (LL:23): [True: 0, False: 0]
| Branch (LL:28): [True: 0, False: 0]
| Branch (LL:33): [True: 0, False: 0]
| Branch (LL:8): [True: 1, False: 1]
| Branch (LL:13): [True: 1, False: 0]
| Branch (LL:18): [True: 1, False: 0]
| Branch (LL:23): [True: 1, False: 0]
| Branch (LL:28): [True: 1, False: 0]
| Branch (LL:33): [True: 1, False: 0]
| Branch (LL:38): [True: 1, False: 0]
------------------
|---> MC/DC Decision Region (LL:8) to (LL:34)
|---> MC/DC Decision Region (LL:8) to (LL:39)
|
| Number of Conditions: 6
| Number of Conditions: 7
| Condition C1 --> (LL:8)
| Condition C2 --> (LL:13)
| Condition C3 --> (LL:18)
| Condition C4 --> (LL:23)
| Condition C5 --> (LL:28)
| Condition C6 --> (LL:33)
| Condition C7 --> (LL:38)
|
| Executed MC/DC Test Vectors:
|
| C1, C2, C3, C4, C5, C6 Result
| 1 { F, -, -, -, -, - = F }
| C1, C2, C3, C4, C5, C6, C7 Result
| 1 { F, -, -, -, -, -, - = F }
| 2 { T, T, T, T, T, T, T = T }
|
| C1-Pair: not covered
| C1-Pair: covered: (1,2)
| C2-Pair: not covered
| C3-Pair: not covered
| C4-Pair: not covered
| C5-Pair: not covered
| C6-Pair: not covered
| MC/DC Coverage for Decision: 0.00%
| C7-Pair: not covered
| MC/DC Coverage for Decision: 14.29%
|
------------------
LL| 0| core::hint::black_box("hello");
LL| 1| core::hint::black_box("hello");
LL| 1| }
LL| 1|}
LL| |
LL| 1|fn bad() {
LL| 1| // With 7 conditions, fall back to branch instrumentation only.
LL| 1| let [a, b, c, d, e, f, g] = <[bool; 7]>::default();
LL| 1| if a && b && c && d && e && f && g {
^0 ^0 ^0 ^0 ^0 ^0
------------------
| Branch (LL:8): [True: 0, False: 1]
| Branch (LL:13): [True: 0, False: 0]
| Branch (LL:18): [True: 0, False: 0]
| Branch (LL:23): [True: 0, False: 0]
| Branch (LL:28): [True: 0, False: 0]
| Branch (LL:33): [True: 0, False: 0]
| Branch (LL:38): [True: 0, False: 0]
------------------
LL| 0| core::hint::black_box("hello");
LL| 1| }
LL| 1|}
LL| 2|}
LL| |
LL| |#[coverage(off)]
LL| |fn main() {
LL| | good();
LL| | bad();
LL| | accept_7_conditions([false; 7]);
LL| | accept_7_conditions([true; 7]);
LL| |}