[all-commits] [llvm/llvm-project] d51525: [libclc] Move lgamma, lgamma_r & tgamma to CLC lib...

[Fraser Cormack via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d51525ba36017507fe95ce48e9670b6f4b267016
      https://github.com/llvm/llvm-project/commit/d51525ba36017507fe95ce48e9670b6f4b267016
  Author: Fraser Cormack <fraser at codeplay.com>
  Date:   2025-04-02 (Wed, 02 Apr 2025)

  Changed paths:
    A libclc/clc/include/clc/math/clc_lgamma.h
    A libclc/clc/include/clc/math/clc_lgamma_r.h
    A libclc/clc/include/clc/math/clc_tgamma.h
    A libclc/clc/include/clc/math/unary_def_via_fp32.inc
    M libclc/clc/lib/generic/SOURCES
    A libclc/clc/lib/generic/math/clc_lgamma.cl
    A libclc/clc/lib/generic/math/clc_lgamma.inc
    A libclc/clc/lib/generic/math/clc_lgamma_r.cl
    A libclc/clc/lib/generic/math/clc_lgamma_r.inc
    A libclc/clc/lib/generic/math/clc_tgamma.cl
    M libclc/generic/include/clc/math/lgamma_r.h
    R libclc/generic/include/clc/math/lgamma_r.inc
    M libclc/generic/lib/math/lgamma.cl
    M libclc/generic/lib/math/lgamma_r.cl
    R libclc/generic/lib/math/lgamma_r.inc
    M libclc/generic/lib/math/tgamma.cl

  Log Message:
  -----------
  [libclc] Move lgamma, lgamma_r & tgamma to CLC library (#134053)

Also enable half-precision variants of tgamma, which were previously
missing.

Note that unlike recent work, these builtins are not vectorized as part
of this commit. Ultimately all three call into lgamma_r, which has heavy
control flow (including switch statements) that would be difficult to
vectorize. Additionally the lgamma_r algorithm is copyrighted to SunPro
so may need a rewrite in the future anyway.

There are no codegen changes (to non-SPIR-V targets) with this commit,
aside from the new half builtins.



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