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| og:image:alt | We optimize float divisions for the case where one of the operands is a unique reference. This is similar to #146307, but with a guard for division by zero.
We do not add opcodes in tier 1
For tie... |
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| gh-146393: Optimize float division operations by mutating uniquely-referenced operands in place (JIT only) | https://github.com/python/cpython/pull/146397#top |
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| #146307 | https://github.com/python/cpython/pull/146307 |
| Optimize float division operations by mutating uniquely-referenced operands in place (JIT only) #146393 | https://github.com/python/cpython/issues/146393 |
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| pythongh-146306 | https://github.com/python/cpython/issues/146306 |
| : Specialize float/float true division in tier 2 optim… | https://github.com/python/cpython/pull/146397/commits/c846269e1038a4d3cb9a4b88754db9a1cfa0b711 |
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Mar 24, 2026
| https://github.com/python/cpython/pull/146397#ref-issue-4130644035 |
|
Optimize float division operations by mutating uniquely-referenced operands in place (JIT only)
#146393
| https://github.com/python/cpython/issues/146393 |
| https://github.com/eendebakpt |
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| March 24, 2026 22:56 | https://github.com/python/cpython/pull/146397#event-23870189798 |
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awaiting review
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| Mar 24, 2026 | https://github.com/python/cpython/pull/146397#event-23870190839 |
| eendebakpt | https://github.com/eendebakpt |
| March 25, 2026 00:01 | https://github.com/python/cpython/pull/146397#commits-pushed-97889f5 |
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| Mark results of float-producing _BINARY_OP as unique | https://github.com/python/cpython/pull/146397/commits/97889f5f3deda26adb1a8eecbc62d3843dccc864 |
| 97889f5 | https://github.com/python/cpython/pull/146397/commits/97889f5f3deda26adb1a8eecbc62d3843dccc864 |
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| Fix truediv type propagation for non-numeric types | https://github.com/python/cpython/pull/146397/commits/67869e4622a78ae5849064ff2662b52307f3c382 |
| 67869e4 | https://github.com/python/cpython/pull/146397/commits/67869e4622a78ae5849064ff2662b52307f3c382 |
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| add guards | https://github.com/python/cpython/pull/146397/commits/5c4e3bf6a0c6cede6f848c85618be4842e006754 |
| 5c4e3bf | https://github.com/python/cpython/pull/146397/commits/5c4e3bf6a0c6cede6f848c85618be4842e006754 |
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| news entry | https://github.com/python/cpython/pull/146397/commits/228bfa9a16e1d45a5cef6d2bdaa5847e13bedcc0 |
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| Merge branch 'main' into jit_float_truediv | https://github.com/python/cpython/pull/146397/commits/8bf12bf68666344f46c72323e3538d4a5940be56 |
| 8bf12bf | https://github.com/python/cpython/pull/146397/commits/8bf12bf68666344f46c72323e3538d4a5940be56 |
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| Mar 25, 2026 | https://github.com/python/cpython/pull/146397#event-23888220901 |
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| Merge remote-tracking branch 'upstream/main' into pr/146397 | https://github.com/python/cpython/pull/146397/commits/46c241ea33079a4c06e631171d9c58ef00a362a2 |
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| Mar 29, 2026 | https://github.com/python/cpython/pull/146397#issuecomment-4150792821 |
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| March 29, 2026 21:44 | https://github.com/python/cpython/pull/146397#commits-pushed-53dd383 |
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| avoid speculative guards | https://github.com/python/cpython/pull/146397/commits/53dd383c7da542915893d40b7d4f266e3e2b5039 |
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| https://github.com/eendebakpt |
| fix test | https://github.com/python/cpython/pull/146397/commits/44ee7f07ae9c9c7bbc8569b1873a1e09f8aa0dff |
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| https://github.com/eendebakpt |
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| Mar 29, 2026 | https://github.com/python/cpython/pull/146397#issuecomment-4151000454 |
| Please reload this page | https://github.com/python/cpython/pull/146397 |
| https://github.com/eendebakpt |
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Mar 30, 2026
| https://github.com/python/cpython/pull/146397#ref-pullrequest-4173052689 |
|
gh-146640: Optimize int operations by mutating uniquely-referenced operands in place (JIT only)
#146641
| https://github.com/python/cpython/pull/146641 |
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| Apr 3, 2026 | https://github.com/python/cpython/pull/146397#issuecomment-4183940434 |
| Please reload this page | https://github.com/python/cpython/pull/146397 |
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| April 3, 2026 19:49 | https://github.com/python/cpython/pull/146397#commits-pushed-e302112 |
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| https://github.com/eendebakpt |
| Merge branch 'main' into jit_float_truediv | https://github.com/python/cpython/pull/146397/commits/e302112619de9286151df35e9da802e59ec2bfdb |
| e302112 | https://github.com/python/cpython/pull/146397/commits/e302112619de9286151df35e9da802e59ec2bfdb |
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| https://github.com/eendebakpt |
| Regenerate pycore_uop_ids.h and pycore_uop_metadata.h with truediv fl… | https://github.com/python/cpython/pull/146397/commits/d2c03bced625e3f837e96b3ccb1ead36801d9a50 |
| d2c03bc | https://github.com/python/cpython/pull/146397/commits/d2c03bced625e3f837e96b3ccb1ead36801d9a50 |
|
| https://github.com/eendebakpt |
| Merge branch 'main' into jit_float_truediv | https://github.com/python/cpython/pull/146397/commits/dba0bb334a93fd2d55d6774151443731ca4c7b01 |
| dba0bb3 | https://github.com/python/cpython/pull/146397/commits/dba0bb334a93fd2d55d6774151443731ca4c7b01 |
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| https://github.com/eendebakpt |
| Merge branch 'main' into jit_float_truediv | https://github.com/python/cpython/pull/146397/commits/8615577080c447199833dbedf4adb762928d30ac |
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Apr 5, 2026
| https://github.com/python/cpython/pull/146397#pullrequestreview-4059331029 |
|
View reviewed changes
| https://github.com/python/cpython/pull/146397/files/8615577080c447199833dbedf4adb762928d30ac |
| Python/optimizer_bytecodes.c | https://github.com/python/cpython/pull/146397/files/8615577080c447199833dbedf4adb762928d30ac#diff-e5bd2b14b0b10f0f47786e26306d689ed1361c3dc3b11dcc3ea52b8a2422ff64 |
| Please reload this page | https://github.com/python/cpython/pull/146397 |
| eendebakpt | https://github.com/eendebakpt |
| April 5, 2026 21:26 | https://github.com/python/cpython/pull/146397#commits-pushed-e715dac |
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| review comments | https://github.com/python/cpython/pull/146397/commits/e715dac12d6f5e8ec927f758f7d32696a8125b91 |
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|
| https://github.com/eendebakpt |
| Merge branch 'main' into jit_float_truediv | https://github.com/python/cpython/pull/146397/commits/925841c61785ada2a0bfb47ed38b0bc9aef625de |
| 925841c | https://github.com/python/cpython/pull/146397/commits/925841c61785ada2a0bfb47ed38b0bc9aef625de |
| eendebakpt | https://github.com/eendebakpt |
| April 6, 2026 22:18 | https://github.com/python/cpython/pull/146397#commits-pushed-43f4987 |
|
| https://github.com/eendebakpt |
| mark more returns as unique | https://github.com/python/cpython/pull/146397/commits/43f4987c77e2e4e675e9034ee67475d6a169214f |
| 43f4987 | https://github.com/python/cpython/pull/146397/commits/43f4987c77e2e4e675e9034ee67475d6a169214f |
|
| https://github.com/eendebakpt |
| Merge branch 'main' into jit_float_truediv | https://github.com/python/cpython/pull/146397/commits/a49018ea282f84ec09ee450bbd2c5f596d9b6f46 |
| a49018e | https://github.com/python/cpython/pull/146397/commits/a49018ea282f84ec09ee450bbd2c5f596d9b6f46 |
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| https://github.com/eendebakpt |
| mark more returns as unique | https://github.com/python/cpython/pull/146397/commits/9cab90075e698c6ad5cc1a854cbe506411703f75 |
| 9cab900 | https://github.com/python/cpython/pull/146397/commits/9cab90075e698c6ad5cc1a854cbe506411703f75 |
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| Apr 11, 2026 | https://github.com/python/cpython/pull/146397#issuecomment-4229611244 |
| #148378 | https://github.com/python/cpython/issues/148378 |
| Please reload this page | https://github.com/python/cpython/pull/146397 |
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| April 11, 2026 22:14 | https://github.com/python/cpython/pull/146397#commits-pushed-b432e1a |
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| Merge branch 'main' into jit_float_truediv | https://github.com/python/cpython/pull/146397/commits/b432e1a0509d8450c1e1c62d7a91fcc7b5383b83 |
| b432e1a | https://github.com/python/cpython/pull/146397/commits/b432e1a0509d8450c1e1c62d7a91fcc7b5383b83 |
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| Merge branch 'main' into jit_float_truediv | https://github.com/python/cpython/pull/146397/commits/0c8965401d41e2abdba348cb631da8f466afdc3f |
| 0c89654 | https://github.com/python/cpython/pull/146397/commits/0c8965401d41e2abdba348cb631da8f466afdc3f |
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| Apr 14, 2026 | https://github.com/python/cpython/pull/146397#issuecomment-4243542314 |
| Please reload this page | https://github.com/python/cpython/pull/146397 |
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| April 14, 2026 13:55 | https://github.com/python/cpython/pull/146397#commits-pushed-fa97ab3 |
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| Merge branch 'main' into jit_float_truediv | https://github.com/python/cpython/pull/146397/commits/fa97ab307c2ae2d97d41e4ef2d6517380f11adeb |
| fa97ab3 | https://github.com/python/cpython/pull/146397/commits/fa97ab307c2ae2d97d41e4ef2d6517380f11adeb |
|
| https://github.com/eendebakpt |
| add back recording ops and guards | https://github.com/python/cpython/pull/146397/commits/3ba0c85add2009c850f5f65a2b42d2b62ed4e56f |
| 3ba0c85 | https://github.com/python/cpython/pull/146397/commits/3ba0c85add2009c850f5f65a2b42d2b62ed4e56f |
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Apr 14, 2026
| https://github.com/python/cpython/pull/146397#pullrequestreview-4106161985 |
|
View reviewed changes
| https://github.com/python/cpython/pull/146397/files/3ba0c85add2009c850f5f65a2b42d2b62ed4e56f |
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awaiting merge
| https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20merge%22 |
|
awaiting review
| https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20review%22 |
| Apr 14, 2026 | https://github.com/python/cpython/pull/146397#event-24488556405 |
|
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| simplify | https://github.com/python/cpython/pull/146397/commits/e7fdb0458c9b56ef34d0d96147ef1b890d3c74e0 |
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| https://github.com/eendebakpt |
| eendebakpt | https://github.com/eendebakpt |
| Apr 14, 2026 | https://github.com/python/cpython/pull/146397#issuecomment-4244200999 |
| Please reload this page | https://github.com/python/cpython/pull/146397 |
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| Apr 14, 2026 | https://github.com/python/cpython/pull/146397#issuecomment-4245780314 |
| Please reload this page | https://github.com/python/cpython/pull/146397 |
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| April 15, 2026 01:12 | https://github.com/python/cpython/pull/146397#commits-pushed-44666f7 |
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| Merge remote-tracking branch 'upstream/main' into pr/146397 | https://github.com/python/cpython/pull/146397/commits/44666f7b3f03936e0a248af9aad63f8e92e9d6f8 |
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| Merge branch 'jit_float_truediv' of github.com:eendebakpt/cpython int… | https://github.com/python/cpython/pull/146397/commits/9a8c1436cddef605df6ec397311acd27f805d75b |
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| 95cbd4a | https://github.com/python/cpython/commit/95cbd4a232d9a68680059a0cb42e3f0d2994e206 |
| Apr 14, 2026 | https://github.com/python/cpython/pull/146397#event-24498983284 |
| Please reload this page | https://github.com/python/cpython/pull/146397 |
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| bedevere-app | https://github.com/apps/bedevere-app |
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awaiting merge
| https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20merge%22 |
| Apr 14, 2026 | https://github.com/python/cpython/pull/146397#event-24498985278 |
| https://github.com/Fidget-Spinner |
| Fidget-Spinner | https://github.com/Fidget-Spinner |
| Apr 14, 2026 | https://github.com/python/cpython/pull/146397#issuecomment-4246525996 |
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| Please reload this page | https://github.com/python/cpython/pull/146397 |
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| April 15, 2026 17:23 | https://github.com/python/cpython/pull/146397#event-24537976508 |
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Apr 17, 2026
| https://github.com/python/cpython/pull/146397#pullrequestreview-4128913162 |
|
View reviewed changes
| https://github.com/python/cpython/pull/146397/files/9a8c1436cddef605df6ec397311acd27f805d75b |
| Python/optimizer_bytecodes.c | https://github.com/python/cpython/pull/146397/files/9a8c1436cddef605df6ec397311acd27f805d75b#diff-e5bd2b14b0b10f0f47786e26306d689ed1361c3dc3b11dcc3ea52b8a2422ff64 |
| ynkdir | https://github.com/ynkdir |
| Apr 17, 2026 | https://github.com/python/cpython/pull/146397#discussion_r3100407773 |
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| Apr 17, 2026 | https://github.com/python/cpython/pull/146397#discussion_r3100467870 |
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| Please reload this page | https://github.com/python/cpython/pull/146397 |
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| Apr 17, 2026 | https://github.com/python/cpython/pull/146397#discussion_r3100562717 |
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| Please reload this page | https://github.com/python/cpython/pull/146397 |
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| Apr 17, 2026 | https://github.com/python/cpython/pull/146397#discussion_r3100645482 |
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| Please reload this page | https://github.com/python/cpython/pull/146397 |
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| Apr 17, 2026 | https://github.com/python/cpython/pull/146397#discussion_r3101762288 |
| Learn more | https://docs.github.com/articles/managing-disruptive-comments/#hiding-a-comment |
| #148693 | https://github.com/python/cpython/pull/148693 |
| Please reload this page | https://github.com/python/cpython/pull/146397 |
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| Apr 17, 2026 | https://github.com/python/cpython/pull/146397#discussion_r3102281487 |
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| #148697 | https://github.com/python/cpython/issues/148697 |
| Please reload this page | https://github.com/python/cpython/pull/146397 |
|
gh-146393: Remove special character in optimizer_bytecodes.c
#148693
| https://github.com/python/cpython/pull/148693 |
|
Handle unicode characters in bytecodes.c
#148697
| https://github.com/python/cpython/issues/148697 |
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Apr 25, 2026
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| pythongh-146393 | https://github.com/python/cpython/issues/146393 |
| : Optimize float division operations by mutating uniqu… | https://github.com/ljfp/cpython/commit/5122e41e3afe507022626538fc938b75f3d79765 |
| 5122e41 | https://github.com/ljfp/cpython/commit/5122e41e3afe507022626538fc938b75f3d79765 |
| pythonGH-146397 | https://github.com/python/cpython/pull/146397 |
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Apr 27, 2026
| https://github.com/python/cpython/pull/146397#ref-issue-4335042305 |
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JIT: Assertion failure Stack underflow (depth = -1)
#149049
| https://github.com/python/cpython/issues/149049 |
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