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Title: gh-116968: Reimplement Tier 2 counters by gvanrossum · Pull Request #117144 · python/cpython · GitHub

Open Graph Title: gh-116968: Reimplement Tier 2 counters by gvanrossum · Pull Request #117144 · python/cpython

X Title: gh-116968: Reimplement Tier 2 counters by gvanrossum · Pull Request #117144 · python/cpython

Description: This introduces a unified 16-bit backoff counter type (_Py_BackoffCounter), shared between the Tier 1 adaptive specialization machinery and the Tier 2 optimizer. The latter's side exit temperature ...

Open Graph Description: This introduces a unified 16-bit backoff counter type (_Py_BackoffCounter), shared between the Tier 1 adaptive specialization machinery and the Tier 2 optimizer. The latter's side exit temperat...

X Description: This introduces a unified 16-bit backoff counter type (_Py_BackoffCounter), shared between the Tier 1 adaptive specialization machinery and the Tier 2 optimizer. The latter's side exit temp...

Opengraph URL: https://github.com/python/cpython/pull/117144

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Baby steps: reimplement thresholds using adaptive counter abstractionshttps://github.com/python/cpython/pull/117144/commits/e7e819b4637527c7cb61ffb3dd83389ceb9cd538
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Make temperature an adaptive counter like the resthttps://github.com/python/cpython/pull/117144/commits/8c74dfab2617247efffce7ed546bbc442ddd8843
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Fix no-GIL build failure in _COLD_EXIThttps://github.com/python/cpython/pull/117144/commits/015bb000a4eb26f08569d24386d75b55c2e5ffcd
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Reimplement adaptive counters in terms of backoff_counterhttps://github.com/python/cpython/pull/117144/commits/7df0f10d9018f12cbb0f07b0efcc87193ccc9c77
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Simplify dynamic counter initialization for JUMP_BACKWARDhttps://github.com/python/cpython/pull/117144/commits/1d76112a6d62e213e0f89f53b98641062e9ec757
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Fix dynamic counter initialization for JUMP_BACKWARDhttps://github.com/python/cpython/pull/117144/commits/8d227904092f14fe14d4eadaa7c7c81b36a18bed
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Merge remote-tracking branch 'origin/main' into exp-backoffhttps://github.com/python/cpython/pull/117144/commits/dcee3629c9de04bc1473d1491f7503ddd39ee908
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