Mark early otherwise optimization unsound

2021-03-18 17:35:46 -03:00
parent 1705a7d64b
commit 778e1978d5
3 changed files with 7 additions and 2 deletions
--- a/compiler/rustc_mir/src/transform/early_otherwise_branch.rs
+++ b/compiler/rustc_mir/src/transform/early_otherwise_branch.rs
@@ -26,6 +26,11 @@ pub struct EarlyOtherwiseBranch;

 impl<'tcx> MirPass<'tcx> for EarlyOtherwiseBranch {
    fn run_pass(&self, tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {
+        //  FIXME(#78496)
+        if !tcx.sess.opts.debugging_opts.unsound_mir_opts {
+            return;
+        }
+
        if tcx.sess.mir_opt_level() < 3 {
            return;
        }