41,387
stars
+13
19,569
forks
563
watchers
136,094
prs
101,965
issues
165
releases
0
discussions
README
The LLVM Compiler Infrastructure Welcome to the LLVM project! This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments. The LLVM project has multiple components. The core of the project is itself called "LLVM". This contains all of the tools, libraries, and header files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer. C-like languages use the Clang frontend. This component compiles C, C++, Objective-C, and Objective-C++ code into LLVM bitcode -- and from there into object files, using LLVM. Other components include: the libc++ C++ standard library, the LLD linker, and more. Getting the Source Code and Building LLVM Consult the Getting Started with LLVM page for information on building and running LLVM. For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide. Getting in touch Join the LLVM Discourse forums, Discord chat, LLVM Office Hours or Regular sync-ups. The LLVM project has adopted a code of conduct for participants to all modes of communication within the project.
Top issues
#33896InstCombine cannot blindly assume that inttoptr(ptrtoint x) -> x118 comments · 2017-09-11#167765[CIR] Implement missing X86 builtins115 comments · 2025-11-12#185382[CIR] Upstream handling of AArch64 (Arm) Neon builtins97 comments · 2026-03-09#135910clang++ incompatibility with libstdc++ gcc4-compatible ABI on Windows84 comments · 2025-04-16#20571inline asm "rm" constraint lowered "m" when "r" would be preferable73 comments · 2014-07-03#14079[meta] VCPP compatibility issues73 comments · 2012-08-27#11360x86 MC encoder and disassembler bugs umbrella71 comments · 2011-09-22#1627Should enhance LLVM switch instruction to take case ranges69 comments · 2007-03-13
Latest release
LLVM 23.1.5 llvmorg-23.1.5 2026-11-03LLVM 23.1.5 Release Linux x86_64: xz archive (signature), zstd archive (signature) Linux Arm64: xz archive (signature), zstd archive (signature) macOS Apple Silicon (ARM64): xz archive (signature), zstd archive (signature) Windows x64 (64-bit): installer (signature), xz archive (signature), zstd archive (signature) Windows on Arm (ARM64): installer (signature), xz archive (signature), [zstd archive](https://github.com/llvm/llvm-project/releases/download/llvmorg-23.1.5/clang+l