Use __builtin_clzl for bits_in_digit if available #73968
Description
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 2020-06-15.12:44:55.090>
created_at = <Date 2017-03-10.10:53:56.987>
labels = ['interpreter-core', '3.10', 'performance']
title = 'Use __builtin_clzl for bits_in_digit if available'
updated_at = <Date 2020-06-15.13:40:04.205>
user = 'https://github.com/niklasf'bugs.python.org fields:
activity = <Date 2020-06-15.13:40:04.205>
actor = 'vstinner'
assignee = 'none'
closed = True
closed_date = <Date 2020-06-15.12:44:55.090>
closer = 'vstinner'
components = ['Interpreter Core']
creation = <Date 2017-03-10.10:53:56.987>
creator = 'niklasf'
dependencies = []
files = ['46759']
hgrepos = []
issue_num = 29782
keywords = []
message_count = 19.0
messages = ['289353', '289400', '289401', '289404', '289406', '289407', '290620', '290621', '290622', '290973', '292090', '292105', '292106', '292114', '292115', '292139', '371035', '371539', '371543']
nosy_count = 6.0
nosy_names = ['mark.dickinson', 'pitrou', 'vstinner', 'serhiy.storchaka', 'louielu', 'niklasf']
pr_nums = ['594', '20739']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'performance'
url = 'https://bugs.python.org/issue29782'
versions = ['Python 3.10']