Skip to content
Navigation Menu
Sign in
Appearance settings
Platform
AI CODE CREATION
GitHub Copilot
Write better code with AI
GitHub Copilot app
Direct agents from issue to merge
MCP Registry
Integrate external tools
DEVELOPER WORKFLOWS
Actions
Automate any workflow
Codespaces
Instant dev environments
Issues
Plan and track work
Code Review
Manage code changes
Code Quality
Enforce quality at merge
APPLICATION SECURITY
GitHub Advanced Security
Find and fix vulnerabilities
Code security
Secure your code as you build
Secret protection
Stop leaks before they start
EXPLORE
Why GitHub
Documentation
Blog
Changelog
Marketplace
View all features
Solutions
BY COMPANY SIZE
Enterprises
Small and medium teams
Startups
Nonprofits
BY USE CASE
App Modernization
DevSecOps
DevOps
CI/CD
View all use cases
BY INDUSTRY
Healthcare
Financial services
Manufacturing
Government
View all industries
View all solutions
Resources
EXPLORE BY TOPIC
AI
Software Development
DevOps
Security
View all topics
EXPLORE BY TYPE
Customer stories
Events & webinars
Ebooks & reports
Business insights
GitHub Skills
SUPPORT & SERVICES
Documentation
Customer support
Community forum
Trust center
Partners
View all resources
Open Source
COMMUNITY
GitHub Sponsors
Fund open source developers
PROGRAMS
Security Lab
Maintainer Community
Accelerator
GitHub Stars
Archive Program
REPOSITORIES
Topics
Trending
Collections
Enterprise
ENTERPRISE SOLUTIONS
Enterprise platform
AI-powered developer platform
AVAILABLE ADD-ONS
GitHub Advanced Security
Enterprise-grade security features
Copilot for Business
Enterprise-grade AI features
Premium Support
Enterprise-grade 24/7 support
Pricing
Type
/
to search
Sign in
Sign up
Appearance settings
You signed in with another tab or window.
Reload
to refresh your session.
You signed out in another tab or window.
Reload
to refresh your session.
You switched accounts on another tab or window.
Reload
to refresh your session.
Dismiss alert
{{ message }}
Uh oh!
There was an error while loading.
Please reload this page
.
python
/
cpython
Public
Uh oh!
There was an error while loading.
Please reload this page
.
Notifications
You must be signed in to change notification settings
Fork
35.2k
Star
74.2k
Code
Issues
5k+
Pull requests
2.5k
Actions
Projects
Security and quality
0
Insights
Additional navigation options
Code
Issues
Pull requests
Actions
Projects
Security and quality
Insights
GH-143732: SEND specialization
- #148963
#148963
Merged
markshannon
merged 11 commits into
python:main
python/cpython:main
from
markshannon:send-specialization
markshannon/cpython:send-specialization
Copy head branch name to clipboard
May 5, 2026
Conversation
Commits
11
(11)
Checks
Files changed
Merged
GH-143732: SEND specialization
#148963
markshannon
merged 11 commits into
python:main
python/cpython:main
from
markshannon:send-specialization
markshannon/cpython:send-specialization
Copy head branch name to clipboard
Commits
Commits on Apr 24, 2026
SEND specialization. Adds 2 new specialized instructions:
Show description for 1b0db04
markshannon
committed
1b0db04
View commit details
Copy full SHA for 1b0db04
Browse repository at this point
Bump magic number
markshannon
committed
5c0999c
View commit details
Copy full SHA for 5c0999c
Browse repository at this point
Wrap PyIter_Send to return a struct for MSVC tailcall support
markshannon
committed
dddef02
View commit details
Copy full SHA for dddef02
Browse repository at this point
Commits on Apr 25, 2026
Merge branch 'main' into send-specialization
markshannon
committed
f47c271
View commit details
Copy full SHA for f47c271
Browse repository at this point
Commits on Apr 27, 2026
Disallow escaping calls in virtual iteration
markshannon
committed
6f8b048
View commit details
Copy full SHA for 6f8b048
Browse repository at this point
Make sure we still specialize FOR_ITER_LIST on free-threading build
markshannon
committed
0879eda
View commit details
Copy full SHA for 0879eda
Browse repository at this point
Don't special case free-threading (it's too complex). Mark _tp_iteritem functions as escaping.
markshannon
committed
0387f10
View commit details
Copy full SHA for 0387f10
Browse repository at this point
Commits on Apr 29, 2026
Merge branch 'main' into send-specialization
markshannon
committed
83bb3f4
View commit details
Copy full SHA for 83bb3f4
Browse repository at this point
Commits on May 5, 2026
Merge branch 'main' into send-specialization
markshannon
committed
1737f73
View commit details
Copy full SHA for 1737f73
Browse repository at this point
Mark calls to _tp_iteritem as possibly escaping
markshannon
committed
6b62032
View commit details
Copy full SHA for 6b62032
Browse repository at this point
Clarify that calls _tp_iteritem are only treated as no-escapping in the JIT
markshannon
committed
20c8cbe
View commit details
Copy full SHA for 20c8cbe
Browse repository at this point
You can’t perform that action at this time.