diff options
Diffstat (limited to 'compiler/rustc_mir/src')
| -rw-r--r-- | compiler/rustc_mir/src/transform/remove_zsts.rs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/compiler/rustc_mir/src/transform/remove_zsts.rs b/compiler/rustc_mir/src/transform/remove_zsts.rs index f0393853030..144cedf593e 100644 --- a/compiler/rustc_mir/src/transform/remove_zsts.rs +++ b/compiler/rustc_mir/src/transform/remove_zsts.rs @@ -8,6 +8,9 @@ pub struct RemoveZsts; impl<'tcx> MirPass<'tcx> for RemoveZsts { fn run_pass(&self, tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) { + if tcx.sess.mir_opt_level() < 3 { + return; + } let param_env = tcx.param_env(body.source.def_id()); let (basic_blocks, local_decls) = body.basic_blocks_and_local_decls_mut(); for block in basic_blocks.iter_mut() { |