Don't set opt_level to best

LICM is still broken

diff --git a/src/lib.rs b/src/lib.rs
index 299b47403bc7699b16d5b0c81c71286d91d56c09..fb23522738df649e2f0120c908c78ff0610e69c1 100644 (file)
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -242,7 +242,8 @@ fn build_isa(sess: &Session) -> Box<dyn isa::TargetIsa + 'static> {
         "false"
     }).unwrap();
 
-    flags_builder.set("opt_level", "best").unwrap();
+    // FIXME(CraneStation/cranelift#732) fix LICM in presence of jump tables
+    //flags_builder.set("opt_level", "best").unwrap();
 
     // FIXME enable again when https://github.com/CraneStation/cranelift/issues/664 is fixed
     /*