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llvm / llvm-project / 1c9fe8c8af7e473e37e141d36837d196dd9a5256
commit1c9fe8c8af7e473e37e141d36837d196dd9a5256[log] [tgz]
authorDavid Sherwood <david.sherwood@arm.com>Wed Mar 26 12:09:59 2025 +0000
committerGitHub <noreply@github.com>Wed Mar 26 12:09:59 2025 +0000
tree3fdf72ca5b0815765a7ab01f585dd024976c326b
parentfed4727187e73c1b61bc65c63a66de58318379fc [diff]
[LV] Optimise users of induction variables in early exit blocks (#130766)

This is the second of two PRs that attempts to improve the IR
generated in the exit blocks of vectorised loops with uncountable
early exits. It follows on from PR #128880. In this PR I am
improving the generated code for users of induction variables in
early exit blocks.

This required using a newly add VPInstruction called
FirstActiveLane, which calculates the index of the first active
predicate in the mask operand.

I have added a new function optimizeEarlyExitInductionUser that
is called from optimizeInductionExitUsers when handling users in
early exit blocks.
5 files changed
tree: 3fdf72ca5b0815765a7ab01f585dd024976c326b
  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-tidy
  30. .git-blame-ignore-revs
  31. .gitattributes
  32. .gitignore
  33. .mailmap
  34. CODE_OF_CONDUCT.md
  35. CONTRIBUTING.md
  36. LICENSE.TXT
  37. pyproject.toml
  38. README.md
  39. SECURITY.md
README.md

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