From 196008bee3048dc330de1591e554b129c0bf5a56 Mon Sep 17 00:00:00 2001
From: bjorn3 <bjorn3@users.noreply.github.com>
Date: Tue, 31 Dec 2019 16:43:24 +0100
Subject: Disable stack2reg opt when optimizations are disabled

---
 src/optimize/mod.rs | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/optimize')

diff --git a/src/optimize/mod.rs b/src/optimize/mod.rs
index 34f68526136..59e4d2dd47d 100644
--- a/src/optimize/mod.rs
+++ b/src/optimize/mod.rs
@@ -8,6 +8,9 @@ pub fn optimize_function<'tcx>(
     ctx: &mut Context,
     clif_comments: &mut crate::pretty_clif::CommentWriter,
 ) {
+    if tcx.sess.opts.optimize == rustc_session::config::OptLevel::No {
+        return; // FIXME classify optimizations over opt levels
+    }
     self::stack2reg::optimize_function(ctx, clif_comments, instance);
     #[cfg(debug_assertions)]
     crate::pretty_clif::write_clif_file(tcx, "stack2reg", instance, &ctx.func, &*clif_comments, None);
-- 
cgit 1.4.1-3-g733a5