diff options
Diffstat (limited to 'compiler/rustc_codegen_llvm/src/coverageinfo/mod.rs')
| -rw-r--r-- | compiler/rustc_codegen_llvm/src/coverageinfo/mod.rs | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/compiler/rustc_codegen_llvm/src/coverageinfo/mod.rs b/compiler/rustc_codegen_llvm/src/coverageinfo/mod.rs index 7d6975618..0befbb5a3 100644 --- a/compiler/rustc_codegen_llvm/src/coverageinfo/mod.rs +++ b/compiler/rustc_codegen_llvm/src/coverageinfo/mod.rs @@ -85,6 +85,14 @@ impl<'tcx> CoverageInfoBuilderMethods<'tcx> for Builder<'_, '_, 'tcx> { let bx = self; + match coverage.kind { + // Marker statements have no effect during codegen, + // so return early and don't create `func_coverage`. + CoverageKind::SpanMarker => return, + // Match exhaustively to ensure that newly-added kinds are classified correctly. + CoverageKind::CounterIncrement { .. } | CoverageKind::ExpressionUsed { .. } => {} + } + let Some(function_coverage_info) = bx.tcx.instance_mir(instance.def).function_coverage_info.as_deref() else { @@ -100,6 +108,9 @@ impl<'tcx> CoverageInfoBuilderMethods<'tcx> for Builder<'_, '_, 'tcx> { let Coverage { kind } = coverage; match *kind { + CoverageKind::SpanMarker => unreachable!( + "unexpected marker statement {kind:?} should have caused an early return" + ), CoverageKind::CounterIncrement { id } => { func_coverage.mark_counter_id_seen(id); // We need to explicitly drop the `RefMut` before calling into `instrprof_increment`, |