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llvm / llvm-project / 07c085af3efcd67503232f99a1652efc6e54c1a9
commit07c085af3efcd67503232f99a1652efc6e54c1a9[log] [tgz]
authorFlorian Hahn <flo@fhahn.com>Sun May 18 09:32:27 2025 +0100
committerGitHub <noreply@github.com>Sun May 18 09:32:27 2025 +0100
tree3a34b433ab6f228f2e4e2d4371b708bd2f653ee8
parent3ccb15d6caf57f2a866d496ada2fb52d14b179d2 [diff]
[VPlan] Add narrowToSingleScalarRecipe transform. (#139150)

Add a new convertToUniformRecipes transform which uses VPlan-based
uniformity analysis to determine if wide recipes and replicate recipes
can be converted to uniform recipes.

There are a few places where we ad-hoc convert recipes to uniform
recipes, which this transform will eventually replace. There are a few
more generalizations required to do so which I plan to do as follow-ups.

By converting the recipes to uniform recipes, we effectively materialize
the information from the VPlan-based analysis.

Note that there is one regression at the moment in SystemZ/pr47665.ll
due to trivial constant folding opportunities in the input IR. This will
be fixed by VPlan-based constant folding
(https://github.com/llvm/llvm-project/pull/125365/)

PR: https://github.com/llvm/llvm-project/pull/139150
4 files changed
tree: 3a34b433ab6f228f2e4e2d4371b708bd2f653ee8
  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

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