[compiler.optimize_bytecode]  ex.cond._main 4
0: move 2
1: cases2 4
2: move 0
3: ret
4: move 1
5: ret
[compiler.optimize_bytecode]  ex.cond 1
0: scnstr #0
1: closure ex.cond._main 1
2: ret
[compiler.optimize_bytecode]  ex.foo 1
0: move 0
1: cases2 6
2: scnstr #20
3: scnstr #20
4: cfun nat.mul
5: goto 9
6: scnstr #10
7: scnstr #10
8: cfun nat.mul
9: scnstr #100
10: cfun nat.add
11: ret