before op1 = 0x1000000000000000
before op2 = 0x1000000000000000
before op3 = 0x1234567887654321
after  op1 = 0x1000000000000000
after  op2 = 0x1234567887654321
after  op3 = 0x1234567887654321
cc = 0
before op1 = 0x1000000000000000
before op2 = 0x2000000000000000
before op3 = 0x1234567887654321
after  op1 = 0x2000000000000000
after  op2 = 0x2000000000000000
after  op3 = 0x1234567887654321
cc = 1