How to Contribute to llvm/llvm-project
A practical guide backed by llvm/llvm-project's real pull-request history - not guesswork.
9%
PR merge rate
no recent data
First review
11%
First-timer success
A Tier
C-Rank
Your game plan
1
Pick a starter issue
llvm/llvm-project currently labels 63 open issues as "good first issue". Start there - maintainers expect newcomers on those.
2
Time your pull request
Median first review lands within no recent data. Open your PR when maintainers are active rather than right before a weekend.
3
Keep it small and focused
Outside PRs to this repo are merged at a 9% rate. Small, well-described PRs that pass CI consistently outperform large ones.
4
Engage with review feedback
1445 active maintainers review contributions here. Respond to comments promptly - responsiveness is the strongest predictor of getting merged.
Open good first issues
[X86] opt in expandFrexp for vector frexp instead of scalarization by libcall
#230893[X86] opt in expandModf instead of libcall
#230886[libc] printf functions assume %s argument points to a null terminated string even when precision is specified.
#230110[flang] CDEFINED not allowed on this kind of symbol at flang/lib/Semantics/symbol.cpp
#229729[KnownFPClass] Teach KnownFPClass that `sinh(non-positive) = non-positive`
#229536Looking for more? See best Llvm repos for beginners.