[mypyc] Coerce Register assignments #11176
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Fixes mypyc/mypyc#759 and probably some other issues. Including only the change to coerce the Register assignments fixes the missing type coercion for the specialized next-generator case, but causes some unusual box-then-unbox from short_ints. These odd coercions are caused by the dict keys in dict literals being considered short_int, but dict_next_rtuple_single/pair return types bein annotated as int_primitive. Changing this to short_int_rprimitive removes the odd coercisions. The remainder of the diff is fixing the irbuild testcase output to have short_int.
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Fixes mypyc/mypyc#759 and probably some other issues. Including only
the change to coerce the Register assignments fixes the missing
type coercion for the specialized next-generator case, but causes some
unusual box-then-unbox from short_ints.
These odd coercions are caused by the dict keys in dict literals being
considered short_int, but dict_next_rtuple_single/pair return types bein
annotated as int_primitive. Changing this to short_int_rprimitive removes
the odd coercisions. The remainder of the diff is fixing the irbuild
testcase output to have short_int.