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-rw-r--r--src/mono_opt.sml2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mono_opt.sml b/src/mono_opt.sml
index 22ee36fc..f4cd6895 100644
--- a/src/mono_opt.sml
+++ b/src/mono_opt.sml
@@ -633,6 +633,8 @@ fun exp e =
EFfiApp ("Basis", "writec", [e])
| EBinop (_, "+", (EPrim (Prim.Int n1), _), (EPrim (Prim.Int n2), _)) => EPrim (Prim.Int (Int64.+ (n1, n2)))
+ | EBinop (_, "-", (EPrim (Prim.Int n1), _), (EPrim (Prim.Int n2), _)) => EPrim (Prim.Int (Int64.- (n1, n2)))
+ | EBinop (_, "*", (EPrim (Prim.Int n1), _), (EPrim (Prim.Int n2), _)) => EPrim (Prim.Int (Int64.* (n1, n2)))
| _ => e