1 files changed, 3 insertions, 0 deletions
diff --git a/ia32/Asmgen.v b/ia32/Asmgen.v
index fa4112d..f92d72c 100644
--- a/ia32/Asmgen.v
+++ b/ia32/Asmgen.v
@@ -357,6 +357,9 @@ Definition transl_op
   | Oxorimm n, a1 :: nil =>
       assertion (mreg_eq a1 res);
       do r <- ireg_of res; OK (Pxor_ri r n :: k)
+  | Onot, a1 :: nil =>
+      assertion (mreg_eq a1 res);
+      do r <- ireg_of res; OK (Pnot r :: k)
   | Oshl, a1 :: a2 :: nil =>
       assertion (mreg_eq a1 res);
       assertion (mreg_eq a2 CX);