- if tcx.sess.opts.optimize == rustc_session::config::OptLevel::No {
- return; // FIXME classify optimizations over opt levels
- }
-
- // FIXME(#1142) stack2reg miscompiles lewton
- if false {
- self::stack2reg::optimize_function(ctx, clif_comments);
- }
-
- crate::pretty_clif::write_clif_file(tcx, "stack2reg", None, instance, &ctx, &*clif_comments);
+ crate::pretty_clif::write_clif_file(tcx, "preopt", None, instance, &ctx, &*clif_comments);