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llvm / llvm-project / b5aaf9d988ff2dc652c86271b181bf0497eb97cb
commitb5aaf9d988ff2dc652c86271b181bf0497eb97cb[log] [tgz]
authorPhilip Reames <preames@rivosinc.com>Wed Jun 18 08:53:45 2025 -0700
committerGitHub <noreply@github.com>Wed Jun 18 08:53:45 2025 -0700
tree99bf3964e848ebcc564359573af8ea3ecc23e42e
parent5d502aeddf2a5d93c3fd93103054261acf4d92f3 [diff]
[InstCombine] Implement vp.reverse reordering/elimination through binop/unop (#143963)

This simply copies the structure of the vector.reverse patterns from
just above, and reimplements them for the vp.reverse intrinsics when the
mask is all ones and the EVLs exactly match.

Its unfortunate that we have three different ways to represent a reverse
(shuffle, vector.reverse, and vp.reverse) but I don't see an obvious way
to remove any them because the semantics are slightly different.

This significantly improves vectorization in TSVC_2's s112 and s1112
loops when using EVL tail folding.
3 files changed
tree: 99bf3964e848ebcc564359573af8ea3ecc23e42e
  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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Welcome to the LLVM project!

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