Enable GVN by default.

2023-05-21 10:33:03 +00:00
parent 08cc634f1a
commit a03c972816
35 changed files with 389 additions and 534 deletions
--- a/compiler/rustc_mir_transform/src/gvn.rs
+++ b/compiler/rustc_mir_transform/src/gvn.rs
@@ -109,7 +109,7 @@ pub struct GVN;

 impl<'tcx> MirPass<'tcx> for GVN {
    fn is_enabled(&self, sess: &rustc_session::Session) -> bool {
-        sess.mir_opt_level() >= 4
+        sess.mir_opt_level() >= 2
    }

    #[instrument(level = "trace", skip(self, tcx, body))]