From 36975b8b6fa5a477452f0174d3361c3564786ef9 Mon Sep 17 00:00:00 2001
From: Chris Fallin <chris@cfallin.org>
Date: Sat, 19 Jun 2021 11:34:05 -0700
Subject: [PATCH] Add doc-comment note on Edit that stack-to-stack moves are
 never generated.

---
 src/lib.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/lib.rs b/src/lib.rs
index 3a6ecb4..92dd1f5 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -892,7 +892,8 @@ impl ProgPoint {
 #[derive(Clone, Debug)]
 pub enum Edit {
     /// Move one allocation to another. Each allocation may be a
-    /// register or a stack slot (spillslot).
+    /// register or a stack slot (spillslot). However, stack-to-stack
+    /// moves will never be generated.
     ///
     /// `to_vreg`, if defined, is useful as metadata: it indicates
     /// that the moved value is a def of a new vreg.