Add complement example

examples/ir3/complement.ir

@@ -0,0 +1,13 @@
+var i32 @nonce = 1
+
+fun i32 @main () {
+init:
+  bid: b0
+  allocations: 
+
+
+block b0:
+  %b0:i0:i32 = load @nonce:i32*
+  %b0:i1:i32 = xor %b0:i0:i32 -1:i32
+  ret %b0:i1:i32
+}