Add jump table for certain safe match-case statements

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#88,449 创建于 2021年6月1日 20 条评论 1 个 reaction 已指派 0 人在 GitHub 查看

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难度: 5/5
预计耗时: 一周以上
新手友好度: 20/100

Issue 类型: 功能
描述清晰度: 需要澄清
活跃度: 停滞
技术栈: python
领域: compilers, performance

调研方向

首先审查现有的 pull request python/cpython#26697 以及其中引用的基准测试 matchperf.py。确定哪些安全的 match-case 语句属于范围，并确定应如何评估 jump-table 变更；当目标案例使用预期的优化，且相关的性能行为得到验证时，工作即告完成。

由索引模型根据 Issue 内容生成。

描述

3.12 interpreter-core performance

BPO	44283
Nosy	@rhettinger, @markshannon, @serhiy-storchaka, @corona10, @brandtbucher, @sweeneyde, @AndersMunch, @Fidget-Spinner, @Kshitiz-Arya
PRs	python/cpython#26697
Files	matchperf.py

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2021-06-01.21:58:12.002>
labels = ['interpreter-core', '3.11', 'performance']
title = 'Add jump table for certain safe match-case statements'
updated_at = <Date 2021-06-14.17:02:35.709>
user = 'https://github.com/sweeneyde'

bugs.python.org fields:

activity = <Date 2021-06-14.17:02:35.709>
actor = 'brandtbucher'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Interpreter Core']
creation = <Date 2021-06-01.21:58:12.002>
creator = 'Dennis Sweeney'
dependencies = []
files = ['50106']
hgrepos = []
issue_num = 44283
keywords = ['patch']
message_count = 20.0
messages = ['394874', '394878', '394882', '394884', '394887', '394889', '394891', '394892', '394975', '394977', '395019', '395069', '395265', '395278', '395717', '395732', '395738', '395797', '395809', '395813']
nosy_count = 9.0
nosy_names = ['rhettinger', 'Mark.Shannon', 'serhiy.storchaka', 'corona10', 'brandtbucher', 'Dennis Sweeney', 'AndersMunch', 'kj', 'Kshitiz17']
pr_nums = ['26697']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'performance'
url = 'https://bugs.python.org/issue44283'
versions = ['Python 3.11']

主要语言: Python
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