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coverage: Don't instrument #[automatically_derived] functions

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This commit is contained in:
Zalathar 2024-01-21 15:07:11 +11:00
parent ef71f1047e
commit 41dcba805d
10 changed files with 17 additions and 97 deletions
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11
compiler/rustc_mir_transform/src/coverage/mod.rs
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@ -351,7 +351,18 @@ fn is_eligible_for_coverage(tcx: TyCtxt<'_>, def_id: LocalDefId) -> bool {
return false;
}
// Don't instrument functions with `#[automatically_derived]` on their
// enclosing impl block, on the assumption that most users won't care about
// coverage for derived impls.
if let Some(impl_of) = tcx.impl_of_method(def_id.to_def_id())
&& tcx.is_automatically_derived(impl_of)
{
trace!("InstrumentCoverage skipped for {def_id:?} (automatically derived)");
return false;
}
if tcx.codegen_fn_attrs(def_id).flags.contains(CodegenFnAttrFlags::NO_COVERAGE) {
trace!("InstrumentCoverage skipped for {def_id:?} (`#[coverage(off)]`)");
return false;
}