======= A.sol:A =======
EVM assembly:
    /* "A.sol":26:101  contract A {... */
  mstore(0x40, 0x80)
    /* "A.sol":58:99  constructor() public {... */
  callvalue
    /* "--CODEGEN--":8:17   */
  dup1
    /* "--CODEGEN--":5:7   */
  iszero
  tag_1
  jumpi
    /* "--CODEGEN--":30:31   */
  0x0
    /* "--CODEGEN--":27:28   */
  dup1
    /* "--CODEGEN--":20:32   */
  revert
    /* "--CODEGEN--":5:7   */
tag_1:
    /* "A.sol":58:99  constructor() public {... */
  pop
    /* "A.sol":91:92  1 */
  0x1
    /* "A.sol":87:88  a */
  0x0
    /* "A.sol":87:92  a = 1 */
  dup2
  swap1
  sstore
  pop
    /* "A.sol":26:101  contract A {... */
  dataSize(sub_0)
  dup1
  dataOffset(sub_0)
  0x0
  codecopy
  0x0
  return
stop

sub_0: assembly {
        /* "A.sol":26:101  contract A {... */
      mstore(0x40, 0x80)
      0x0
      dup1
      revert

    auxdata: 0xa165627a7a723058208069fb34f9d1298c9637e45b5ff7887152a0fc494dffc1806996810d5fe2228a0029
}

Binary:
6080604052348015600f57600080fd5b50600160008190555060358060256000396000f3006080604052600080fd00a165627a7a723058208069fb34f9d1298c9637e45b5ff7887152a0fc494dffc1806996810d5fe2228a0029