diff options
| -rw-r--r-- | compiler/rustc_mir_transform/src/unreachable_prop.rs | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/compiler/rustc_mir_transform/src/unreachable_prop.rs b/compiler/rustc_mir_transform/src/unreachable_prop.rs index bd1724bf842..0b9311a20ef 100644 --- a/compiler/rustc_mir_transform/src/unreachable_prop.rs +++ b/compiler/rustc_mir_transform/src/unreachable_prop.rs @@ -13,7 +13,11 @@ pub struct UnreachablePropagation; impl MirPass<'_> for UnreachablePropagation { fn is_enabled(&self, sess: &rustc_session::Session) -> bool { // Enable only under -Zmir-opt-level=2 as this can make programs less debuggable. - sess.mir_opt_level() >= 2 + + // FIXME(#116171) Coverage gets confused by MIR passes that can remove all + // coverage statements from an instrumented function. This pass can be + // re-enabled when coverage codegen is robust against that happening. + sess.mir_opt_level() >= 2 && !sess.instrument_coverage() } fn run_pass<'tcx>(&self, tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) { |