/[NO]SYNCHRONOUS_EXCEPTIONS

  Controls whether an exception is associated with the instruction
  that caused it.  Specifying /SYNCHRONOUS_EXCEPTIONS slows program
  execution, so only use it when debugging a specific problem, such
  as locating the source of an exception.

  The default, /NOSYNCHRONOUS_EXCEPTIONS, is used where exceptions
  can be reported imprecisely one or more instructions after the
  instruction that caused the exception.

  Specifying /IEEE_MODE=FAST (the default) provides imprecise
  exception reporting (same as /NOSYNCHRONOUS_EXCEPTIONS).
  Specifying other /IEEE_MODE keywords provides precise exception
  reporting (same as /SYNCHRONOUS_EXCEPTIONS).