/MACHINE_CODE

  The /MACHINE_CODE qualifier controls whether the listing file  contains  a
  list of compiler generated machine code.

  The format of the /MACHINE_CODE qualifier is as follows:

     /[NO]MACHINE_CODE

  The /MACHINE_CODE qualifier has no effect  unless  you  also  specify  the
  /LISTING  qualifier.   If you specify the /MACHINE_CODE qualifier with the
  /OPTIMIZE qualifier, the machine code listing may not reflect  the  actual
  code executed for a given statement nor the order of execution.

  The /NOMACHINE_CODE qualifier suppresses compiler generated  machine  code
  in the listing file.

  The default is /NOMACHINE_CODE.