[all-commits] [llvm/llvm-project] 1ee32d: [Clang] Add width handling for <gpuintrin.h> shuff...

[Joseph Huber via All-commits]

  Branch: refs/heads/release/20.x
  Home:   https://github.com/llvm/llvm-project
  Commit: 1ee32d22344f94f179063e3ddf8ae880af2cb240
      https://github.com/llvm/llvm-project/commit/1ee32d22344f94f179063e3ddf8ae880af2cb240
  Author: Joseph Huber <huberjn at outlook.com>
  Date:   2025-02-11 (Tue, 11 Feb 2025)

  Changed paths:
    M clang/lib/Headers/amdgpuintrin.h
    M clang/lib/Headers/gpuintrin.h
    M clang/lib/Headers/nvptxintrin.h
    M libc/src/__support/GPU/utils.h
    M libc/test/integration/src/__support/GPU/CMakeLists.txt
    A libc/test/integration/src/__support/GPU/shuffle.cpp

  Log Message:
  -----------
  [Clang] Add width handling for <gpuintrin.h> shuffle helper (#125896)

Summary:
The CUDA impelementation has long supported the `width` argument on its
shuffle instrucitons, which makes it more difficult to replace those
uses with this helper. This patch just correctly implements that for
AMDGPU and NVPTX so it's equivalent to `__shfl_sync` in CUDA. This will
ease porting.

Fortunately these get optimized out correctly when passing in known
widths.

(cherry picked from commit 2d8106cb5a505326d1da0f4461708ed44a0ac761)


  Commit: 9e7f8352c7a3dbbade39c11fe6f786d0457956ee
      https://github.com/llvm/llvm-project/commit/9e7f8352c7a3dbbade39c11fe6f786d0457956ee
  Author: Joseph Huber <huberjn at outlook.com>
  Date:   2025-02-11 (Tue, 11 Feb 2025)

  Changed paths:
    M clang/test/Headers/gpuintrin.c

  Log Message:
  -----------
  [Clang] Fix test after new argument was added

(cherry picked from commit 718cdeb9c701725412a040b2b7148523a286a256)


Compare: https://github.com/llvm/llvm-project/compare/6195c3a981c8...9e7f8352c7a3

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