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.
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.
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.
For the Tapir compiler IR, cite either the Tapir conference paper at ACM PPoPP 2017 conference paper or the Tapir journal paper in ACM TOPC 2019.
Tapir conference paper, ACM PPoPP 2017:
Tao B. Schardl, William S. Moses, and Charles E. Leiserson. 2017. Tapir: Embedding Fork-Join Parallelism into LLVM's Intermediate Representation. In Proceedings of the 22nd ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming (PPoPP '17). 249–265. https://doi.org/10.1145/3018743.3018758
BibTeX:
@inproceedings{SchardlMoLe17,
author = {Schardl, Tao B. and Moses, William S. and Leiserson, Charles E.},
title = {Tapir: Embedding Fork-Join Parallelism into LLVM's Intermediate Representation},
year = {2017},
isbn = {9781450344937},
publisher = {Association for Computing Machinery},
address = {New York, NY, USA},
url = {https://doi.org/10.1145/3018743.3018758},
doi = {10.1145/3018743.3018758},
booktitle = {Proceedings of the 22nd ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming},
pages = {249–-265},
numpages = {17},
keywords = {control-flow graph, multicore, tapir, openmp, fork-join parallelism, cilk, optimization, serial semantics, llvm, par- allel computing, compiling},
location = {Austin, Texas, USA},
series = {PPoPP '17}
}Journal article about Tapir, ACM TOPC 2019:
Tao B. Schardl, William S. Moses, and Charles E. Leiserson. 2019. Tapir: Embedding Recursive Fork-join Parallelism into LLVM’s Intermediate Representation. ACM Transactions on Parallel Computing 6, 4, Article 19 (December 2019), 33 pages. https://doi.org/10.1145/3365655
BibTeX:
@article{SchardlMoLe19,
author = {Schardl, Tao B. and Moses, William S. and Leiserson, Charles E.},
title = {Tapir: Embedding Recursive Fork-Join Parallelism into LLVM’s Intermediate Representation},
year = {2019},
issue_date = {December 2019},
publisher = {Association for Computing Machinery},
address = {New York, NY, USA},
volume = {6},
number = {4},
issn = {2329-4949},
url = {https://doi.org/10.1145/3365655},
doi = {10.1145/3365655},
journal = {ACM Transactions on Parallel Computing},
month = {dec},
articleno = {19},
numpages = {33},
keywords = {compiling, fork-join parallelism, Tapir, control-flow graph, optimization, parallel computing, OpenMP, multicore, Cilk, serial-projection property, LLVM}
}OpenCilk is supported in part by the National Science Foundation, under grant number CCRI-1925609, and in part by the USAF-MIT AI Accelerator, which is sponsored by the United States Air Force Research Laboratory under Cooperative Agreement Number FA8750-19-2-1000.
Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and should not be interpreted as representing the official policies or views, either expressed or implied, of the United states Air Force, the U.S. Government, or the National Science Foundation. The U.S. Government is authorized to reproduce and distribute reprints for Government purposes notwithstanding any copyright notation herein.
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