Message389707
frame.f_lasti and traceback.tb_lasti are best left as byte offsets.
There is no guarantee that we won't go back to variable length instructions.
For example, a "LONG_JUMP" instruction which is 4 bytes long and takes a 3 byte offset might well be a worthwhile extension.
However, changing bytecode offsets and the internal representation of frame.f_lasti will reduce the number of "EXTENDED_ARG"s by 60% or more and makes interpreter dispatch a tad more efficient. |
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Date |
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2021-03-29 15:03:37 | Mark.Shannon | set | recipients:
+ Mark.Shannon, rhettinger, vstinner, python-dev, berker.peksag, serhiy.storchaka, eric.fahlgren, Demur Rumed, godaygo |
2021-03-29 15:03:37 | Mark.Shannon | set | messageid: <1617030217.04.0.57083317095.issue27129@roundup.psfhosted.org> |
2021-03-29 15:03:37 | Mark.Shannon | link | issue27129 messages |
2021-03-29 15:03:36 | Mark.Shannon | create | |
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