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llvm / llvm-project / d77cf579d8c2e25099b39debd20bd6b5ade53672
commitd77cf579d8c2e25099b39debd20bd6b5ade53672[log] [tgz]
authorJustin Fargnoli <jfargnoli@nvidia.com>Thu Aug 28 09:43:49 2025 -0700
committerGitHub <noreply@github.com>Thu Aug 28 09:43:49 2025 -0700
treef25212638856cf3d430339959a2e62ce6b895c15
parentd3520a637674fe558eacafb9d102734fdb65e0d0 [diff]
[lit] Refactor available `ptxas` features (#154439)

ToT `lit` currently assumes that a given `ptxas` version supports all
capabilities of prior `ptxas` releases. This approach was flexible
enough to support the removal of 32-bit address compilation from `ptxas`
in CUDA 12.1, but it struggles with the removal of Volta and prior
compilation in CUDA 13.0.

To deal with this, this PR refactors how `lit` defines the set of
features available for a given `ptxas` version. It invokes `ptxas` not
just to get its version, but also to get the list of supported SMs,
supported PTX ISA versions, and support for 32-bit compilation.

This approach should be flexible enough to deal with the changing
support matrix of `ptxas` as it goes forward. One obvious downside is
that this relies on parsing the `stdout` of `ptxas`, something that's
inherently unstable. But, IMO, this is something that we can fix as
needed.
174 files changed
tree: f25212638856cf3d430339959a2e62ce6b895c15
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. flang-rt/
  11. libc/
  12. libclc/
  13. libcxx/
  14. libcxxabi/
  15. libsycl/
  16. libunwind/
  17. lld/
  18. lldb/
  19. llvm/
  20. llvm-libgcc/
  21. mlir/
  22. offload/
  23. openmp/
  24. orc-rt/
  25. polly/
  26. runtimes/
  27. third-party/
  28. utils/
  29. .clang-format
  30. .clang-format-ignore
  31. .clang-tidy
  32. .git-blame-ignore-revs
  33. .gitattributes
  34. .gitignore
  35. .mailmap
  36. CODE_OF_CONDUCT.md
  37. CONTRIBUTING.md
  38. LICENSE.TXT
  39. pyproject.toml
  40. README.md
  41. 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.

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