Implement superinstructions

[markshannon]

BPO	44900
Nosy	@markshannon
PRs	bpo-44900: Add five superinstructions. #27741

^{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 = <Date 2021-08-16.11:24:00.599>
created_at = <Date 2021-08-12.11:44:41.083>
labels = ['performance']
title = 'Implement superinstructions'
updated_at = <Date 2021-08-16.11:24:00.599>
user = 'https://github.com/markshannon'

bugs.python.org fields:

activity = <Date 2021-08-16.11:24:00.599>
actor = 'Mark.Shannon'
assignee = 'none'
closed = True
closed_date = <Date 2021-08-16.11:24:00.599>
closer = 'Mark.Shannon'
components = []
creation = <Date 2021-08-12.11:44:41.083>
creator = 'Mark.Shannon'
dependencies = []
files = []
hgrepos = []
issue_num = 44900
keywords = ['patch']
message_count = 2.0
messages = ['399444', '399652']
nosy_count = 1.0
nosy_names = ['Mark.Shannon']
pr_nums = ['27741']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'performance'
url = 'https://bugs.python.org/issue44900'
versions = []

[markshannon]

PEP-659 quickening provides a mechanism for replacing instructions.
We should exploit this to implement superinstructions when quickening.
See faster-cpython/ideas#16

[markshannon]

New changeset 4f51fa9 by Mark Shannon in branch 'main':
bpo-44900: Add five superinstructions. (GH-27741)
4f51fa9