diff --git a/stepper.py b/stepper.py
index 008e09c..9339d51 100644
--- a/stepper.py
+++ b/stepper.py
@@ -88,6 +88,24 @@ def eval_oper(operand, ssa_env, global_env):
 def eval_binop(bop, left, right):
     if bop == 'add':
         return left + right
+    elif bop == 'sub':
+        return left - right
+    elif bop == 'mul':
+        return left * right
+    elif bop == 'sdiv':
+        return left // right
+    elif bop == 'shl':
+        return left << right
+    elif bop == 'ashr':
+        return left >> right
+    elif bop == 'lshr':
+        return (left >> right) % 0x10000000000000000
+    elif bop == 'and':
+        return left & right
+    elif bop == 'or':
+        return left | right
+    elif bop == 'xor':
+        return left ^ right
     else:
         err('Unknown LLVM Binary operator: {}'
             .format(bop))
@@ -103,7 +121,12 @@ define i64 @tigermain (i64 %U_mainSL_8, i64 %U_mainDummy_9) {
     %b = add i64 %a, %a
     %c = add i64 %a, %b
     %d = add i64 100, %c
-    ret i64 %d
+    %e = mul i64 7, %b
+    %f = sdiv i64 %e, 2
+    %g = sub i64 %d, %f
+    %h = or i64 1, %g
+    %i = shl i64 %h, 2
+    ret i64 %g
 }
     '''