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llvm / llvm-project / ec1016f7ef9ff97ecef6e2e84a55d36d7bfbe803
commitec1016f7ef9ff97ecef6e2e84a55d36d7bfbe803[log] [tgz]
authorFlorian Hahn <flo@fhahn.com>Mon Apr 28 11:16:36 2025 +0100
committerGitHub <noreply@github.com>Mon Apr 28 11:16:36 2025 +0100
treea68424f79c857918292a17214f1896e1c4caa451
parentcf17ee1d3a7ec78dbd922b3eb3944ac49cb78737 [diff]
[IVDescriptors] Support reductions with minimumnum/maximumnum. (#137335)

Add a new reduction recurrence kind for reductions with
minimumnum/maximumnum. Such reductions can be vectorized without
nsz/nnans, same as reductions with maximum/minimum intrinsics.

Note that a new reduction kind is needed to make sure partial reductions
are also combined with minimumnum/maximumnum.

Note that the final reduction to a scalar value is performed with
vector.reduce.fmin/fmax. This should be fine, as the results of the
partial reductions with maximumnum/minimumnum silences any sNaNs.

In-loop and reductions in SLP are not supported yet, as there's no
reduction version of maximumnum/minimumnum yet and fmax may be
incorrect.

PR: https://github.com/llvm/llvm-project/pull/137335
6 files changed
tree: a68424f79c857918292a17214f1896e1c4caa451
  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. libunwind/
  16. lld/
  17. lldb/
  18. llvm/
  19. llvm-libgcc/
  20. mlir/
  21. offload/
  22. openmp/
  23. polly/
  24. pstl/
  25. runtimes/
  26. third-party/
  27. utils/
  28. .clang-format
  29. .clang-format-ignore
  30. .clang-tidy
  31. .git-blame-ignore-revs
  32. .gitattributes
  33. .gitignore
  34. .mailmap
  35. CODE_OF_CONDUCT.md
  36. CONTRIBUTING.md
  37. LICENSE.TXT
  38. pyproject.toml
  39. README.md
  40. SECURITY.md
README.md

The LLVM Compiler Infrastructure

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