René's URL Explorer Experiment


Title: GH-100982: Break up `COMPARE_AND_BRANCH` by brandtbucher · Pull Request #102801 · python/cpython · GitHub

Open Graph Title: GH-100982: Break up `COMPARE_AND_BRANCH` by brandtbucher · Pull Request #102801 · python/cpython

X Title: GH-100982: Break up `COMPARE_AND_BRANCH` by brandtbucher · Pull Request #102801 · python/cpython

Description: COMPARE_AND_BRANCH (and its specializations) are a bit weird. It's basically an "adaptive superinstruction" that's present in co_code, and its semantics and lifecycle are different from that of any...

Open Graph Description: COMPARE_AND_BRANCH (and its specializations) are a bit weird. It's basically an "adaptive superinstruction" that's present in co_code, and its semantics and lifecycle are differen...

X Description: COMPARE_AND_BRANCH (and its specializations) are a bit weird. It's basically an "adaptive superinstruction" that's present in co_code, and its semantics and lifecy...

Opengraph URL: https://github.com/python/cpython/pull/102801

X: @github

direct link

Domain: github.com

route-pattern/_view_fragments/voltron/pull_requests/show/:user_id/:repository/:id/pull_request_layout(.:format)
route-controllervoltron_pull_requests_fragments
route-actionpull_request_layout
fetch-noncev2:37831cb5-4f5f-e5fc-0087-2ebd43be848d
current-catalog-service-hashae870bc5e265a340912cde392f23dad3671a0a881730ffdadd82f2f57d81641b
request-idC8BE:2C2C4D:11EA95B:18B8BB1:696A98FA
html-safe-nonce1195aa7b4c2b2499c27076ad5fbcfda7476b55396c00c8b43e0e4be0b5dbe22a
visitor-payloadeyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiJDOEJFOjJDMkM0RDoxMUVBOTVCOjE4QjhCQjE6Njk2QTk4RkEiLCJ2aXNpdG9yX2lkIjoiNTMxOTQ3MjE5NjUwNzgzNDYxOCIsInJlZ2lvbl9lZGdlIjoiaWFkIiwicmVnaW9uX3JlbmRlciI6ImlhZCJ9
visitor-hmac58ee098985ce0bea12881bedcbe2ef40156260bb3c3801bc5c87f58dc78f9907
hovercard-subject-tagpull_request:1280846594
github-keyboard-shortcutsrepository,pull-request-list,pull-request-conversation,pull-request-files-changed,copilot
google-site-verificationApib7-x98H0j5cPqHWwSMm6dNU4GmODRoqxLiDzdx9I
octolytics-urlhttps://collector.github.com/github/collect
analytics-location///voltron/pull_requests_fragments/pull_request_layout
fb:app_id1401488693436528
apple-itunes-appapp-id=1477376905, app-argument=https://github.com/_view_fragments/voltron/pull_requests/show/python/cpython/102801/pull_request_layout
twitter:imagehttps://opengraph.githubassets.com/40f2ea26805a84d90f86f7845b8eaf877e943dc15daac6143b5110b3a81ad207/python/cpython/pull/102801
twitter:cardsummary_large_image
og:imagehttps://opengraph.githubassets.com/40f2ea26805a84d90f86f7845b8eaf877e943dc15daac6143b5110b3a81ad207/python/cpython/pull/102801
og:image:altCOMPARE_AND_BRANCH (and its specializations) are a bit weird. It's basically an "adaptive superinstruction" that's present in co_code, and its semantics and lifecycle are differen...
og:image:width1200
og:image:height600
og:site_nameGitHub
og:typeobject
og:author:usernamebrandtbucher
hostnamegithub.com
expected-hostnamegithub.com
Nonec0d8175e41e0e55b9e984c935b24b808cabab919dd3174aa45dac3ef503ed1af
turbo-cache-controlno-preview
go-importgithub.com/python/cpython git https://github.com/python/cpython.git
octolytics-dimension-user_id1525981
octolytics-dimension-user_loginpython
octolytics-dimension-repository_id81598961
octolytics-dimension-repository_nwopython/cpython
octolytics-dimension-repository_publictrue
octolytics-dimension-repository_is_forkfalse
octolytics-dimension-repository_network_root_id81598961
octolytics-dimension-repository_network_root_nwopython/cpython
turbo-body-classeslogged-out env-production page-responsive
disable-turbofalse
browser-stats-urlhttps://api.github.com/_private/browser/stats
browser-errors-urlhttps://api.github.com/_private/browser/errors
release99aab454e5ddc8df30805fb76c114c3008a15842
ui-targetfull
theme-color#1e2327
color-schemelight dark

Links:

Skip to contenthttps://github.com/python/cpython/pull/102801#start-of-content
https://github.com/
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F102801
GitHub CopilotWrite better code with AIhttps://github.com/features/copilot
GitHub SparkBuild and deploy intelligent appshttps://github.com/features/spark
GitHub ModelsManage and compare promptshttps://github.com/features/models
MCP RegistryNewIntegrate external toolshttps://github.com/mcp
ActionsAutomate any workflowhttps://github.com/features/actions
CodespacesInstant dev environmentshttps://github.com/features/codespaces
IssuesPlan and track workhttps://github.com/features/issues
Code ReviewManage code changeshttps://github.com/features/code-review
GitHub Advanced SecurityFind and fix vulnerabilitieshttps://github.com/security/advanced-security
Code securitySecure your code as you buildhttps://github.com/security/advanced-security/code-security
Secret protectionStop leaks before they starthttps://github.com/security/advanced-security/secret-protection
Why GitHubhttps://github.com/why-github
Documentationhttps://docs.github.com
Bloghttps://github.blog
Changeloghttps://github.blog/changelog
Marketplacehttps://github.com/marketplace
View all featureshttps://github.com/features
Enterpriseshttps://github.com/enterprise
Small and medium teamshttps://github.com/team
Startupshttps://github.com/enterprise/startups
Nonprofitshttps://github.com/solutions/industry/nonprofits
App Modernizationhttps://github.com/solutions/use-case/app-modernization
DevSecOpshttps://github.com/solutions/use-case/devsecops
DevOpshttps://github.com/solutions/use-case/devops
CI/CDhttps://github.com/solutions/use-case/ci-cd
View all use caseshttps://github.com/solutions/use-case
Healthcarehttps://github.com/solutions/industry/healthcare
Financial serviceshttps://github.com/solutions/industry/financial-services
Manufacturinghttps://github.com/solutions/industry/manufacturing
Governmenthttps://github.com/solutions/industry/government
View all industrieshttps://github.com/solutions/industry
View all solutionshttps://github.com/solutions
AIhttps://github.com/resources/articles?topic=ai
Software Developmenthttps://github.com/resources/articles?topic=software-development
DevOpshttps://github.com/resources/articles?topic=devops
Securityhttps://github.com/resources/articles?topic=security
View all topicshttps://github.com/resources/articles
Customer storieshttps://github.com/customer-stories
Events & webinarshttps://github.com/resources/events
Ebooks & reportshttps://github.com/resources/whitepapers
Business insightshttps://github.com/solutions/executive-insights
GitHub Skillshttps://skills.github.com
Documentationhttps://docs.github.com
Customer supporthttps://support.github.com
Community forumhttps://github.com/orgs/community/discussions
Trust centerhttps://github.com/trust-center
Partnershttps://github.com/partners
GitHub SponsorsFund open source developershttps://github.com/sponsors
Security Labhttps://securitylab.github.com
Maintainer Communityhttps://maintainers.github.com
Acceleratorhttps://github.com/accelerator
Archive Programhttps://archiveprogram.github.com
Topicshttps://github.com/topics
Trendinghttps://github.com/trending
Collectionshttps://github.com/collections
Enterprise platformAI-powered developer platformhttps://github.com/enterprise
GitHub Advanced SecurityEnterprise-grade security featureshttps://github.com/security/advanced-security
Copilot for BusinessEnterprise-grade AI featureshttps://github.com/features/copilot/copilot-business
Premium SupportEnterprise-grade 24/7 supporthttps://github.com/premium-support
Pricinghttps://github.com/pricing
Search syntax tipshttps://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
documentationhttps://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
Sign in https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F102801
Sign up https://github.com/signup?ref_cta=Sign+up&ref_loc=header+logged+out&ref_page=%2F%3Cuser-name%3E%2F%3Crepo-name%3E%2Fvoltron%2Fpull_requests_fragments%2Fpull_request_layout&source=header-repo&source_repo=python%2Fcpython
Reloadhttps://github.com/python/cpython/pull/102801
Reloadhttps://github.com/python/cpython/pull/102801
Reloadhttps://github.com/python/cpython/pull/102801
python https://github.com/python
cpythonhttps://github.com/python/cpython
Please reload this pagehttps://github.com/python/cpython/pull/102801
Notifications https://github.com/login?return_to=%2Fpython%2Fcpython
Fork 33.9k https://github.com/login?return_to=%2Fpython%2Fcpython
Star 71.1k https://github.com/login?return_to=%2Fpython%2Fcpython
Code https://github.com/python/cpython
Issues 5k+ https://github.com/python/cpython/issues
Pull requests 2.1k https://github.com/python/cpython/pulls
Actions https://github.com/python/cpython/actions
Projects 31 https://github.com/python/cpython/projects
Security Uh oh! There was an error while loading. Please reload this page. https://github.com/python/cpython/security
Please reload this pagehttps://github.com/python/cpython/pull/102801
Insights https://github.com/python/cpython/pulse
Code https://github.com/python/cpython
Issues https://github.com/python/cpython/issues
Pull requests https://github.com/python/cpython/pulls
Actions https://github.com/python/cpython/actions
Projects https://github.com/python/cpython/projects
Security https://github.com/python/cpython/security
Insights https://github.com/python/cpython/pulse
Sign up for GitHub https://github.com/signup?return_to=%2Fpython%2Fcpython%2Fissues%2Fnew%2Fchoose
terms of servicehttps://docs.github.com/terms
privacy statementhttps://docs.github.com/privacy
Sign inhttps://github.com/login?return_to=%2Fpython%2Fcpython%2Fissues%2Fnew%2Fchoose
Jump to bottomhttps://github.com/python/cpython/pull/102801#issue-comment-box
brandtbucherhttps://github.com/brandtbucher
python:mainhttps://github.com/python/cpython/tree/main
brandtbucher:compare-and-not-branchhttps://github.com/brandtbucher/cpython/tree/compare-and-not-branch
GH-100982: Break up COMPARE_AND_BRANCH https://github.com/python/cpython/pull/102801#top
brandtbucherhttps://github.com/brandtbucher
python:mainhttps://github.com/python/cpython/tree/main
brandtbucher:compare-and-not-branchhttps://github.com/brandtbucher/cpython/tree/compare-and-not-branch
Conversation 1 https://github.com/python/cpython/pull/102801
Commits 15 https://github.com/python/cpython/pull/102801/commits
Checks 0 https://github.com/python/cpython/pull/102801/checks
Files changed https://github.com/python/cpython/pull/102801/files
Please reload this pagehttps://github.com/python/cpython/pull/102801
https://github.co/hiddenchars
https://github.com/python/cpython/pull/{{ revealButtonHref }}
https://github.com/brandtbucher
brandtbucherhttps://github.com/brandtbucher
Mar 17, 2023https://github.com/python/cpython/pull/102801#issue-1630035402
Please reload this pagehttps://github.com/python/cpython/pull/102801
slightly slowerhttps://github.com/faster-cpython/benchmarking/blob/main/results/bm-20230309-3.12.0a5%2B-fd42c63/bm-20230309-linux-x86_64-brandtbucher-compare_and_not_bran-3.12.0a5%2B-fd42c63-vs-base.png
Specialization of some instructions does not conform to PEP 659, and prevents PEP 669 #100982https://github.com/python/cpython/issues/100982
Please reload this pagehttps://github.com/python/cpython/pull/102801
brandtbucherhttps://github.com/brandtbucher
February 1, 2023 12:58https://github.com/python/cpython/pull/102801#commits-pushed-53e50c4
https://github.com/brandtbucher
Get rid of COMPARE_AND_BRANCHhttps://github.com/python/cpython/pull/102801/commits/53e50c403478e40f368dd3a21178cb81f65bd554
53e50c4https://github.com/python/cpython/pull/102801/commits/53e50c403478e40f368dd3a21178cb81f65bd554
https://github.com/brandtbucher
Embed the mask in the oparg againhttps://github.com/python/cpython/pull/102801/commits/20b59acf0178511cec2ed90945b8cd28d0a34f39
20b59achttps://github.com/python/cpython/pull/102801/commits/20b59acf0178511cec2ed90945b8cd28d0a34f39
https://github.com/brandtbucher
Catch up with mainhttps://github.com/python/cpython/pull/102801/commits/781c986883c859925c8d355b573865d3767a32bd
781c986https://github.com/python/cpython/pull/102801/commits/781c986883c859925c8d355b573865d3767a32bd
https://github.com/brandtbucher
fixuphttps://github.com/python/cpython/pull/102801/commits/49083fa4e671cb44aedfca18129a31b97a2b3112
49083fahttps://github.com/python/cpython/pull/102801/commits/49083fa4e671cb44aedfca18129a31b97a2b3112
https://github.com/brandtbucher
Catch up with mainhttps://github.com/python/cpython/pull/102801/commits/39ace6485482bd73b26947f231c54e0183218da4
39ace64https://github.com/python/cpython/pull/102801/commits/39ace6485482bd73b26947f231c54e0183218da4
https://github.com/brandtbucher
Catch up with mainhttps://github.com/python/cpython/pull/102801/commits/07548131a7184653621e89a1a24f1ed8237ef45b
0754813https://github.com/python/cpython/pull/102801/commits/07548131a7184653621e89a1a24f1ed8237ef45b
https://github.com/brandtbucher
Bump magic numberhttps://github.com/python/cpython/pull/102801/commits/e93b6fe9014a845b8d4f75c1079ab8dec706749b
e93b6fehttps://github.com/python/cpython/pull/102801/commits/e93b6fe9014a845b8d4f75c1079ab8dec706749b
https://github.com/brandtbucher
Fixup bytecodes.chttps://github.com/python/cpython/pull/102801/commits/fd42c6327da18e423afc8a20ffafa7b0c47abb1e
fd42c63https://github.com/python/cpython/pull/102801/commits/fd42c6327da18e423afc8a20ffafa7b0c47abb1e
https://github.com/brandtbucher
Catch up with mainhttps://github.com/python/cpython/pull/102801/commits/d42ac00d037b1fb57ce88387c4a69cb1d6e15ffd
d42ac00https://github.com/python/cpython/pull/102801/commits/d42ac00d037b1fb57ce88387c4a69cb1d6e15ffd
https://github.com/brandtbucher
blurb addhttps://github.com/python/cpython/pull/102801/commits/eaf0fc6680f71e08995153cfaf63002520b89dd1
eaf0fc6https://github.com/python/cpython/pull/102801/commits/eaf0fc6680f71e08995153cfaf63002520b89dd1
https://github.com/brandtbucher
fixuphttps://github.com/python/cpython/pull/102801/commits/e911d60a1e2afa2951c8375ef47389e6aa99123a
e911d60https://github.com/python/cpython/pull/102801/commits/e911d60a1e2afa2951c8375ef47389e6aa99123a
https://github.com/brandtbucher
brandtbucherhttps://github.com/brandtbucher
performance https://github.com/python/cpython/issues?q=state%3Aopen%20label%3Aperformance
interpreter-core https://github.com/python/cpython/issues?q=state%3Aopen%20label%3Ainterpreter-core
Mar 17, 2023https://github.com/python/cpython/pull/102801#event-8783040856
https://github.com/brandtbucher
brandtbucherhttps://github.com/brandtbucher
markshannonhttps://github.com/markshannon
code ownerhttps://github.com/python/cpython/blob/72186aa637bc88cd5f5e234803af64acab25994c/.github/CODEOWNERS#L24
March 17, 2023 23:50https://github.com/python/cpython/pull/102801#event-8783040869
https://github.com/brandtbucher
brandtbucherhttps://github.com/brandtbucher
Mar 17, 2023https://github.com/python/cpython/pull/102801#event-8783040871
https://github.com/brandtbucher
brandtbucherhttps://github.com/brandtbucher
iritkatrielhttps://github.com/iritkatriel
code ownerhttps://github.com/python/cpython/blob/72186aa637bc88cd5f5e234803af64acab25994c/.github/CODEOWNERS#L27
March 17, 2023 23:50https://github.com/python/cpython/pull/102801#event-8783040873
https://github.com/bedevere-bot
bedevere-bothttps://github.com/bedevere-bot
Mar 17, 2023 https://github.com/python/cpython/pull/102801#ref-issue-1530738659
Specialization of some instructions does not conform to PEP 659, and prevents PEP 669 #100982 https://github.com/python/cpython/issues/100982
https://github.com/bedevere-bot
bedevere-bothttps://github.com/bedevere-bot
awaiting core review https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20core%20review%22
Mar 17, 2023https://github.com/python/cpython/pull/102801#event-8783041078
brandtbucherhttps://github.com/brandtbucher
March 19, 2023 20:27https://github.com/python/cpython/pull/102801#commits-pushed-29d3966
https://github.com/brandtbucher
Catch up with mainhttps://github.com/python/cpython/pull/102801/commits/29d39663325f7e1749a4b8452d63d1326aac2027
29d3966https://github.com/python/cpython/pull/102801/commits/29d39663325f7e1749a4b8452d63d1326aac2027
https://github.com/brandtbucher
Sorry, Eric!https://github.com/python/cpython/pull/102801/commits/94b38369e0e321d770c1f0c0a785f19423b71fc1
94b3836https://github.com/python/cpython/pull/102801/commits/94b38369e0e321d770c1f0c0a785f19423b71fc1
https://github.com/markshannon
markshannonhttps://github.com/markshannon
Mar 20, 2023 https://github.com/python/cpython/pull/102801#pullrequestreview-1349096873
View reviewed changes https://github.com/python/cpython/pull/102801/files/94b38369e0e321d770c1f0c0a785f19423b71fc1
markshannonhttps://github.com/markshannon
https://github.com/python/cpython/pull/102801#pullrequestreview-1349096873
Learn morehttps://docs.github.com/articles/managing-disruptive-comments/#hiding-a-comment
Please reload this pagehttps://github.com/python/cpython/pull/102801
https://github.com/bedevere-bot
bedevere-bothttps://github.com/bedevere-bot
awaiting merge https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20merge%22
awaiting core review https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20core%20review%22
Mar 20, 2023https://github.com/python/cpython/pull/102801#event-8797476622
brandtbucherhttps://github.com/brandtbucher
March 23, 2023 12:16https://github.com/python/cpython/pull/102801#commits-pushed-31a13a4
https://github.com/brandtbucher
Catch up with mainhttps://github.com/python/cpython/pull/102801/commits/31a13a4ed5707ae9db0e1b3e45ee118133e85ebc
31a13a4https://github.com/python/cpython/pull/102801/commits/31a13a4ed5707ae9db0e1b3e45ee118133e85ebc
https://github.com/brandtbucher
Catch up with main (again)https://github.com/python/cpython/pull/102801/commits/ac5a8e571d5b675b640d60495e6907cbda101715
ac5a8e5https://github.com/python/cpython/pull/102801/commits/ac5a8e571d5b675b640d60495e6907cbda101715
https://github.com/brandtbucher
brandtbucherhttps://github.com/brandtbucher
0444ae2https://github.com/python/cpython/commit/0444ae24875489dc290d8efdb9ee6440ee60dac8
Mar 23, 2023https://github.com/python/cpython/pull/102801#event-8833027148
https://github.com/bedevere-bot
bedevere-bothttps://github.com/bedevere-bot
awaiting merge https://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%22awaiting%20merge%22
Mar 23, 2023https://github.com/python/cpython/pull/102801#event-8833027569
Fidget-Spinnerhttps://github.com/Fidget-Spinner
Mar 27, 2023 https://github.com/python/cpython/pull/102801#ref-commit-6183cbd
https://github.com/brandtbucher
https://github.com/Fidget-Spinner
pythonGH-100982https://github.com/python/cpython/issues/100982
: Break up COMPARE_AND_BRANCH (https://github.com/Fidget-Spinner/cpython/commit/6183cbdc92d6648fa9997cdc8fc44971b3fc4983
pythonGH-102801https://github.com/python/cpython/pull/102801
)https://github.com/Fidget-Spinner/cpython/commit/6183cbdc92d6648fa9997cdc8fc44971b3fc4983
6183cbdhttps://github.com/Fidget-Spinner/cpython/commit/6183cbdc92d6648fa9997cdc8fc44971b3fc4983
warsawhttps://github.com/warsaw
Apr 11, 2023 https://github.com/python/cpython/pull/102801#ref-commit-73558f2
https://github.com/brandtbucher
https://github.com/warsaw
pythonGH-100982https://github.com/python/cpython/issues/100982
: Break up COMPARE_AND_BRANCH (https://github.com/warsaw/cpython/commit/73558f2c1dd6bc9d9b4f64fe7fe4022d3adcb2e5
pythonGH-102801https://github.com/python/cpython/pull/102801
)https://github.com/warsaw/cpython/commit/73558f2c1dd6bc9d9b4f64fe7fe4022d3adcb2e5
73558f2https://github.com/warsaw/cpython/commit/73558f2c1dd6bc9d9b4f64fe7fe4022d3adcb2e5
Sign up for freehttps://github.com/join?source=comment-repo
Sign in to commenthttps://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fpython%2Fcpython%2Fpull%2F102801
https://github.com/markshannon
markshannon https://github.com/markshannon
https://github.com/python/cpython/pull/102801/files/94b38369e0e321d770c1f0c0a785f19423b71fc1
https://github.com/iritkatriel
iritkatriel https://github.com/iritkatriel
https://github.com/brandtbucher
brandtbucher https://github.com/brandtbucher
interpreter-core https://github.com/python/cpython/issues?q=state%3Aopen%20label%3Ainterpreter-core
performance https://github.com/python/cpython/issues?q=state%3Aopen%20label%3Aperformance
Please reload this pagehttps://github.com/python/cpython/pull/102801
https://github.com/brandtbucher
https://github.com/markshannon
https://github.com/bedevere-bot
https://github.com
Termshttps://docs.github.com/site-policy/github-terms/github-terms-of-service
Privacyhttps://docs.github.com/site-policy/privacy-policies/github-privacy-statement
Securityhttps://github.com/security
Statushttps://www.githubstatus.com/
Communityhttps://github.community/
Docshttps://docs.github.com/
Contacthttps://support.github.com?tags=dotcom-footer

Viewport: width=device-width


URLs of crawlers that visited me.