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coverage. Adapt to mcdc mapping formats introduced by llvm 19

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This commit is contained in:
zhuyunxing 2024-07-25 15:23:35 +08:00
parent 99bd601df5
commit 6e3e19f714
22 changed files with 490 additions and 485 deletions
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22
tests/coverage/mcdc/condition-limit.rs
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@ -4,22 +4,8 @@
//@ compile-flags: -Zcoverage-options=mcdc
//@ llvm-cov-flags: --show-branches=count --show-mcdc
// Check that MC/DC instrumentation can gracefully handle conditions that
// exceed LLVM's limit of 6 conditions per decision.
//
// (The limit is enforced in `compiler/rustc_mir_build/src/build/coverageinfo/mcdc.rs`.)
fn good() {
// With only 6 conditions, perform full MC/DC instrumentation.
let [a, b, c, d, e, f] = <[bool; 6]>::default();
if a && b && c && d && e && f {
core::hint::black_box("hello");
}
}
fn bad() {
// With 7 conditions, fall back to branch instrumentation only.
let [a, b, c, d, e, f, g] = <[bool; 7]>::default();
fn accept_7_conditions(bool_arr: [bool; 7]) {
let [a, b, c, d, e, f, g] = bool_arr;
if a && b && c && d && e && f && g {
core::hint::black_box("hello");
}
@ -27,6 +13,6 @@ fn bad() {
#[coverage(off)]
fn main() {
good();
bad();
accept_7_conditions([false; 7]);
accept_7_conditions([true; 7]);
}