Skip to content
Navigation Menu
Toggle navigation
Sign in
Appearance settings
Platform
GitHub Copilot
Write better code with AI
GitHub Spark
New
Build and deploy intelligent apps
GitHub Models
New
Manage and compare prompts
GitHub Advanced Security
Find and fix vulnerabilities
Actions
Automate any workflow
Codespaces
Instant dev environments
Issues
Plan and track work
Code Review
Manage code changes
Discussions
Collaborate outside of code
Code Search
Find more, search less
Explore
Why GitHub
Documentation
GitHub Skills
Blog
Integrations
GitHub Marketplace
MCP Registry
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
Topics
AI
DevOps
Security
Software Development
View all
Explore
Learning Pathways
Events & Webinars
Ebooks & Whitepapers
Customer Stories
Partners
Executive Insights
Open Source
GitHub Sponsors
Fund open source developers
The ReadME Project
GitHub community articles
Repositories
Topics
Trending
Collections
Enterprise
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
state:open author:jyn514 label:C-optimization
Search code, repositories, users, issues, pull requests...
Search syntax tips
Provide feedback
Saved searches
Use saved searches to filter your results more quickly
Sign in
Sign up
Appearance settings
Resetting focus
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 }}
rust-lang
/
rust
Public
Notifications
You must be signed in to change notification settings
Fork
13.8k
Star
107k
Code
Issues
5k+
Pull requests
867
Actions
Projects
9
Security
Uh oh!
There was an error while loading.
Please reload this page
.
Insights
Additional navigation options
Code
Issues
Pull requests
Actions
Projects
Security
Insights
Draft release notes for 1.91
#147010 ·
Mark-Simulacrum
opened
on Sep 25, 2025
19
Issues
Search Issues
state
:
open
author
:
jyn514
label
:
C-optimization
state:open author:jyn514 label:C-optimization
Search
Labels
Milestones
New issue
Search results
Open
Closed
Experiment with using <code>HashMap::with_capacity</code> throughout the compiler
C-optimization
Category: An issue highlighting optimization opportunities or PRs implementing such
Category: An issue highlighting optimization opportunities or PRs implementing such
E-medium
Call for participation: Medium difficulty. Experience needed to fix: Intermediate.
Call for participation: Medium difficulty. Experience needed to fix: Intermediate.
E-mentor
Call for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion.
Call for participation: This issue has a mentor. Use #t-compiler/help on Zulip for discussion.
I-compiletime
Issue: Problems and improvements with respect to compile times.
Issue: Problems and improvements with respect to compile times.
T-compiler
Relevant to the compiler team, which will review and decide on the PR/issue.
Relevant to the compiler team, which will review and decide on the PR/issue.
Status: Open.
#137005
In rust-lang/rust;
·
jyn514
opened
on Feb 14, 2025
Track memory usage with -Z self-profile
A-self-profile
Area: Self-profiling feature of the compiler
Area: Self-profiling feature of the compiler
C-optimization
Category: An issue highlighting optimization opportunities or PRs implementing such
Category: An issue highlighting optimization opportunities or PRs implementing such
I-compilemem
Issue: Problems and improvements with respect to memory usage during compilation.
Issue: Problems and improvements with respect to memory usage during compilation.
T-compiler
Relevant to the compiler team, which will review and decide on the PR/issue.
Relevant to the compiler team, which will review and decide on the PR/issue.
WG-compiler-performance
Working group: Compiler Performance
Working group: Compiler Performance
Status: Open.
#81348
In rust-lang/rust;
·
jyn514
opened
on Jan 24, 2021
Rustdoc shouldn't collect all attributes into a single string when parsing markdown
A-doctests
Area: Documentation tests, run by rustdoc
Area: Documentation tests, run by rustdoc
A-markdown-parsing
Area: Markdown parsing for doc-comments
Area: Markdown parsing for doc-comments
C-optimization
Category: An issue highlighting optimization opportunities or PRs implementing such
Category: An issue highlighting optimization opportunities or PRs implementing such
I-compilemem
Issue: Problems and improvements with respect to memory usage during compilation.
Issue: Problems and improvements with respect to memory usage during compilation.
I-compiletime
Issue: Problems and improvements with respect to compile times.
Issue: Problems and improvements with respect to compile times.
S-blocked
Status: Blocked on something else such as an RFC or other implementation work.
Status: Blocked on something else such as an RFC or other implementation work.
T-rustdoc
Relevant to the rustdoc team, which will review and decide on the PR/issue.
Relevant to the rustdoc team, which will review and decide on the PR/issue.
Status: Open.
#75669
In rust-lang/rust;
·
jyn514
opened
on Aug 18, 2020
You can’t perform that action at this time.