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speedup for / while / if with better bytecode #46711

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@pitrou

Description

@pitrou
BPO 2459
Nosy @rhettinger, @gpshead, @jcea, @pitrou, @giampaolo, @tiran, @djc, @phsilva
Files
  • predict_loop.diff
  • for_iter.patch
  • trunk-opt-loop.patch: for_iter.patch merged with python/issues-test-cpython#4715
  • 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 2008-03-22.22:25:03.988>
    labels = ['interpreter-core', 'performance']
    title = 'speedup for / while / if with better bytecode'
    updated_at = <Date 2014-06-22.12:04:07.520>
    user = 'https://github.com/pitrou'

    bugs.python.org fields:

    activity = <Date 2014-06-22.12:04:07.520>
    actor = 'BreamoreBoy'
    assignee = 'jyasskin'
    closed = False
    closed_date = None
    closer = None
    components = ['Interpreter Core']
    creation = <Date 2008-03-22.22:25:03.988>
    creator = 'pitrou'
    dependencies = []
    files = ['9877', '12923', '13227']
    hgrepos = []
    issue_num = 2459
    keywords = ['patch']
    message_count = 31.0
    messages = ['64343', '64359', '64364', '64367', '64383', '64506', '64537', '64572', '64573', '64577', '64599', '64603', '66027', '68687', '80591', '80593', '80598', '80995', '81029', '81958', '81962', '81976', '82556', '82557', '83003', '83012', '83022', '83088', '106883', '192575', '221249']
    nosy_count = 15.0
    nosy_names = ['nnorwitz', 'collinwinter', 'rhettinger', 'gregory.p.smith', 'jcea', 'tzot', 'pitrou', 'giampaolo.rodola', 'christian.heimes', 'jyasskin', 'stutzbach', 'lauromoura', 'djc', 'phsilva', 'BreamoreBoy']
    pr_nums = []
    priority = 'normal'
    resolution = None
    stage = None
    status = 'languishing'
    superseder = None
    type = 'performance'
    url = 'https://bugs.python.org/issue2459'
    versions = ['Python 2.7', 'Python 3.3', 'Python 3.4']

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      interpreter-core(Objects, Python, Grammar, and Parser dirs)pendingThe issue will be closed if no feedback is providedperformancePerformance or resource usage
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