diff --git a/cranelift/codegen/src/preopt.peepmatic b/cranelift/codegen/src/preopt.peepmatic
index 8f2651fc21..0833206450 100644
--- a/cranelift/codegen/src/preopt.peepmatic
+++ b/cranelift/codegen/src/preopt.peepmatic
@@ -112,6 +112,8 @@
 
 ;; Replace with negative 1.
 (=> (bor_imm -1 $x) -1)
+
+;; Other replacments
 (=> (bxor_imm -1 $x) (bnot $x))
 
 ;; Transform `[(x << N) >> N]` into a (un)signed-extending move.