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llvm / llvm-project / e860c166556105c6f9275e130a0c27ae117a5f12
commite860c166556105c6f9275e130a0c27ae117a5f12[log] [tgz]
authorLuke Lau <luke@igalia.com>Wed Jul 03 11:58:53 2024 +0800
committerGitHub <noreply@github.com>Wed Jul 03 11:58:53 2024 +0800
treebc62559894b0a83bc5962801a6fab87c80b74180
parent0f9fbbb63cfcd2069441aa2ebef622c9716f8dbb [diff]
[Docs][RISCV] Document RISC-V vector codegen (#96740)

This is a revival of https://reviews.llvm.org/D142348, and attempts to
document how RVV semantics can be expressed in LLVM IR as well as how
codegen works in the backend.

Parts of this are taken from the original RFC
https://lists.llvm.org/pipermail/llvm-dev/2020-October/145850.html, but
I've largely rewritten this from the original differential revision to
exclude explaining the specification itself and instead just focus on
the LLVM specific bits. (I figured that there's better material
available elsewhere for learning about RVV itself)

I've also updated it to include as much as I know about fixed vector
codegen as well as the recent changes to vsetvli insertion.
2 files changed
tree: bc62559894b0a83bc5962801a6fab87c80b74180
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. libc/
  11. libclc/
  12. libcxx/
  13. libcxxabi/
  14. libunwind/
  15. lld/
  16. lldb/
  17. llvm/
  18. llvm-libgcc/
  19. mlir/
  20. offload/
  21. openmp/
  22. polly/
  23. pstl/
  24. runtimes/
  25. third-party/
  26. utils/
  27. .clang-format
  28. .clang-tidy
  29. .git-blame-ignore-revs
  30. .gitattributes
  31. .gitignore
  32. .mailmap
  33. CODE_OF_CONDUCT.md
  34. CONTRIBUTING.md
  35. LICENSE.TXT
  36. pyproject.toml
  37. README.md
  38. SECURITY.md
README.md

The LLVM Compiler Infrastructure

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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

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For information on how to contribute to the LLVM project, please take a look at the Contributing to LLVM guide.

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