[all-commits] [llvm/llvm-project] 7091dd: [AMDGPU] Fix lowering of abs for i16 vectors with ...

[Tim Gymnich via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7091dd277a1e2349f33390be9f3ccf21bff39003
      https://github.com/llvm/llvm-project/commit/7091dd277a1e2349f33390be9f3ccf21bff39003
  Author: Tim Gymnich <tim at gymni.ch>
  Date:   2024-06-14 (Fri, 14 Jun 2024)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIISelLowering.cpp
    A llvm/test/CodeGen/AMDGPU/abs_i16.ll

  Log Message:
  -----------
  [AMDGPU] Fix lowering of abs for i16 vectors with more than 2 elements (#95413)

fixes #94606

Expansion of `ABS` for `i16` vectors with more than 2 elements is
currently falling back to scalarization of the vector.
This PR adds a custom lowering for `ABS` on `i16` vectors that splits
the vector into multiple `<2 x i 16>` vectors.



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