"InstructionTranslator".
  This can be a bit confusing, as "InstructionTranslator" is not
  an *fx* tracer, but its stored in a variable named tracer, and
  its output***is***an `fx`tracer.*



The function produces guards and stores them on "output" above.


The function produces "output_instructions" and stores them on
      "output" above.


The function maps the newly produced transformed code to the
      initial code it read off the frame. This mapping is worth
      remembering, we will refer to it much later on below where we
      cover guard failures.


Using the transformed code from 4.1 and the guards from 4.3, the
   function produces a GuardedCode.


Now that we have learned about frame evaluation, letâs review
"InstructionTranslator", and see how it turns the frame we handed it
over into TorchDynamo internal types.
InstructionTranslator
InstructionTranslator does a lot! We wonât cover the details of