[all-commits] [llvm/llvm-project] cdfba0: [AMDGPU][Legalizer] Widen i16 G_SEXT_INREG

[Pierre van Houtryve via All-commits]

  Branch: refs/heads/users/pierre-vh/sext-in-reg-i16-legal
  Home:   https://github.com/llvm/llvm-project
  Commit: cdfba0ea7ab0fcb60d632a25433b18b421022c25
      https://github.com/llvm/llvm-project/commit/cdfba0ea7ab0fcb60d632a25433b18b421022c25
  Author: pvanhout <pierre.vanhoutryve at amd.com>
  Date:   2025-03-17 (Mon, 17 Mar 2025)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp
    M llvm/test/CodeGen/AMDGPU/GlobalISel/ashr.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-abs.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-ashr.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-sext-inreg.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-sext.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-smax.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-smin.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/legalize-smulh.mir
    M llvm/test/CodeGen/AMDGPU/GlobalISel/llvm.abs.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/sext_inreg.ll

  Log Message:
  -----------
  [AMDGPU][Legalizer] Widen i16 G_SEXT_INREG

It's better to widen them to avoid it being lowered into a G_ASHR + G_SHL. With this change we just extend to i32 then trunc the result.


  Commit: 10436c86f9d9517cd5d57942a43b2621d0be0fb5
      https://github.com/llvm/llvm-project/commit/10436c86f9d9517cd5d57942a43b2621d0be0fb5
  Author: pvanhout <pierre.vanhoutryve at amd.com>
  Date:   2025-03-17 (Mon, 17 Mar 2025)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPULegalizerInfo.cpp

  Log Message:
  -----------
  clang-format


Compare: https://github.com/llvm/llvm-project/compare/c4187f7cce37...10436c86f9d9

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