before op1 = 0
before op2 = 0
before op3 = 0
after  op1 = 0
after  op2 = 0
after  op3 = 0
cc = 0
before op1 = 0xffffffff
before op2 = 0xffffffff
before op3 = 0xffffffff
after  op1 = 0xffffffff
after  op2 = 0xfffffffe
after  op3 = 0xffffffff
cc = 1
before op1 = 0x10000000
before op2 = 0x10000000
before op3 = 0x12345678
after  op1 = 0x10000000
after  op2 = 0x22345678
after  op3 = 0x12345678
cc = 2
before op1 = 0x10000000
before op2 = 0x20000000
before op3 = 0x12345678
after  op1 = 0x20000000
after  op2 = 0x32345678
after  op3 = 0x12345678
cc = 2
before op1 = 0xffffffff
before op2 = 0x3
before op3 = 0xfffffffd
after  op1 = 0x3
after  op2 = 0
after  op3 = 0xfffffffd
cc = 0
before op1 = 0
before op2 = 0xffffffff
before op3 = 0xffffffff
after  op1 = 0xffffffff
after  op2 = 0xfffffffe
after  op3 = 0xffffffff
cc = 1
before op1 = 0xffffffff
before op2 = 0x10000000
before op3 = 0x12345678
after  op1 = 0x10000000
after  op2 = 0x22345678
after  op3 = 0x12345678
cc = 2
before op1 = 0x10000000
before op2 = 0x7fffffff
before op3 = 0x1
after  op1 = 0x7fffffff
after  op2 = 0x80000000
after  op3 = 0x1
cc = 3