gen vN+1 todo:

stop and evaluate progress here
- evaluate direct/indirect use
- evaluate use of temporary in unary dereference
- evaluate load_temp
- evaluate gen_copy

then:
- temporary test suite
- address non-object field/index/etc access
- calls
- casts
- slices, slice length
- globals

stop and evaluate progress here

then:
- tagged unions
- tuples
- if

stop and evaluate progress here