ethminer/evmcc/test/stack/swap.lll

(asm
5      ;; 0
2      ;; 2
1      ;; 4
12     ;; 6
JUMPI  ;; 8

POP    ;; 9
POP    ;; 10
STOP   ;; 11

;; stack = 2,1
SWAP1  ;; 12
1      ;; 13
21     ;; 15
JUMPI  ;; 17

POP    ;; 18
POP    ;; 19
STOP   ;; 20

;; stack = 1,2
SUB    ;; 21
0
MSTORE
1
31
RETURN ;; returns 03
)