[New-bugs-announce] [issue27129] Wordcode, part 2

[Serhiy Storchaka]

New submission from Serhiy Storchaka:

This is the second stage of converting to wordcode (issue26647).

Proposed patch makes bytecodecode consisting of code units (16-bit words) instead of bytes. It includes following changes:

* Changes meaning of jump offsets. They counts not bytes, but code units. This extends the range addressed by short commands (from 256 bytes to 256 words) and simplifies ceval.c.

* Changes f_lasti, tb_lasti etc to count code units instead of bytes.

* Changes disassembler to show addresses in code units, not bytes.

* Refactores the code.

These changes break compatibility (already broken by switching to 16-bit bytecode). The first one breaks compatibility with compiled bytecode and needs incrementing the magic number.

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components: Interpreter Core
files: wordcode2.patch
keywords: patch
messages: 266431
nosy: haypo, serhiy.storchaka
priority: normal
severity: normal
stage: patch review
status: open
title: Wordcode, part 2
type: enhancement
versions: Python 3.6
Added file: http://bugs.python.org/file43015/wordcode2.patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27129>
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