From 96983fc53009a2a2d2f93e7cec012634800be1fa Mon Sep 17 00:00:00 2001
From: Lzu Tao <taolzu@gmail.com>
Date: Wed, 21 Aug 2019 06:25:37 +0000
Subject: [PATCH] Add comment to avoid accidentally remove the changes.

---
 src/libcore/cmp.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/libcore/cmp.rs b/src/libcore/cmp.rs
index 74e9ceb510a9..167a9dd1c362 100644
--- a/src/libcore/cmp.rs
+++ b/src/libcore/cmp.rs
@@ -1012,6 +1012,8 @@ mod impls {
             impl Ord for $t {
                 #[inline]
                 fn cmp(&self, other: &$t) -> Ordering {
+                    // The order here is important to generate more optimal assembly.
+                    // See <https://github.com/rust-lang/rust/issues/63758> for more info.
                     if *self < *other { Less }
                     else if *self > *other { Greater }
                     else { Equal }