int/float specializations should mutate the LHS in-place when possible

GitHub fields:

assignee = 'https://github.com/brandtbucher'
closed_at = None
created_at = <Date 2022-01-14.06:42:28.312>
labels = ['interpreter-core', '3.11', 'performance']
title = 'int/float specializations should mutate the LHS in-place when possible'
updated_at = <Date 2022-01-31.18:57:11.093>
user = 'https://github.com/brandtbucher'

bugs.python.org fields:

activity = <Date 2022-01-31.18:57:11.093>
actor = 'gvanrossum'
assignee = 'brandtbucher'
closed = False
closed_date = None
closer = None
components = ['Interpreter Core']
creation = <Date 2022-01-14.06:42:28.312>
creator = 'brandtbucher'
dependencies = []
files = []
hgrepos = []
issue_num = 46372
keywords = ['patch']
message_count = 2.0
messages = ['410544', '412215']
nosy_count = 4.0
nosy_names = ['gvanrossum', 'mark.dickinson', 'Mark.Shannon', 'brandtbucher']
pr_nums = ['30594']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'performance'
url = 'https://bugs.python.org/issue46372'
versions = ['Python 3.11']