[all-commits] [llvm/llvm-project] 970550: [libclc] Move nextafter to the CLC library (#124097)

[Fraser Cormack via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9705500582b9c2b2e1dd6de14f03a94d270a9250
      https://github.com/llvm/llvm-project/commit/9705500582b9c2b2e1dd6de14f03a94d270a9250
  Author: Fraser Cormack <fraser at codeplay.com>
  Date:   2025-01-23 (Thu, 23 Jan 2025)

  Changed paths:
    M libclc/amdgpu/lib/SOURCES
    R libclc/amdgpu/lib/math/nextafter.cl
    M libclc/clc/include/clc/clcmacro.h
    A libclc/clc/include/clc/math/binary_decl_with_scalar_second_arg.inc
    A libclc/clc/include/clc/math/clc_nextafter.h
    M libclc/clc/include/clc/relational/clc_isnan.h
    A libclc/clc/include/clc/shared/binary_decl.inc
    M libclc/clc/lib/clspv/SOURCES
    M libclc/clc/lib/generic/SOURCES
    A libclc/clc/lib/generic/math/clc_nextafter.cl
    M libclc/clc/lib/spirv/SOURCES
    M libclc/clc/lib/spirv64/SOURCES
    M libclc/clspv/lib/SOURCES
    R libclc/clspv/lib/math/nextafter.cl
    R libclc/clspv/lib/math/nextafter.inc
    R libclc/generic/include/clc/math/binary_decl.inc
    M libclc/generic/include/clc/math/fmax.h
    M libclc/generic/include/clc/math/fmin.h
    R libclc/generic/include/math/clc_nextafter.h
    M libclc/generic/lib/SOURCES
    R libclc/generic/lib/math/clc_nextafter.cl
    M libclc/generic/lib/math/nextafter.cl
    R libclc/ptx/lib/SOURCES
    R libclc/ptx/lib/math/nextafter.cl

  Log Message:
  -----------
  [libclc] Move nextafter to the CLC library (#124097)

There were two implementations of this - one that implemented nextafter
in software, and another that called a clang builtin. No in-tree targets
called the builtin, so all targets build the software version. The
builtin version has been removed, and the software version has been
renamed to be the "default".

This commit also optimizes nextafter, to avoid scalarization as much as
possible. Note however that the (CLC) relational builtins still
scalarize; those will be optimized in a separate commit.

Since nextafter is used by some convert_type builtins, the diff to IR
codegen is not limited to the builtin itself.



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