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llvm / llvm-project / 11a3de7e98785b0df8f2010fb22c10c0590d2707
commit11a3de7e98785b0df8f2010fb22c10c0590d2707[log] [tgz]
authorSergei Barannikov <barannikov88@gmail.com>Wed Apr 23 12:43:05 2025 +0300
committerGitHub <noreply@github.com>Wed Apr 23 12:43:05 2025 +0300
treef902ea49a9358bf98db5d75d1500800c12eaac5e
parent0de2f64e652a1b8c1e051635c98fb2b69c6b2c62 [diff]
[SDag][ARM][RISCV] Allow lowering CTPOP into a libcall (#101786)

This is a reland of #99752 with the bug fixed (see test diff in the
third commit in this PR).
All `popcount` libcalls return `int`, but `ISD::CTPOP` returns the type
of the argument, which can be wider than `int`. The fix is to make DAG
legalizer pass the correct return type to `makeLibCall` and sign-extend
the result afterwards.

Original commit message:
The main change is adding CTPOP to `RuntimeLibcalls.def` to allow
targets to use LibCall action for CTPOP. DAG legalizers are changed
accordingly.

Pull Request: https://github.com/llvm/llvm-project/pull/101786
18 files changed
tree: f902ea49a9358bf98db5d75d1500800c12eaac5e
  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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