[all-commits] [llvm/llvm-project] 6e1aee: [AMDGPU] Select v_bfe_u32 for i8/i16 (and (srl x, ...

[Vigneshwar Jayakumar via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6e1aee4276bbd6f84b34ce449a3c88d2013ca5e4
      https://github.com/llvm/llvm-project/commit/6e1aee4276bbd6f84b34ce449a3c88d2013ca5e4
  Author: Vigneshwar Jayakumar <vigneshwar.jayakumar at amd.com>
  Date:   2026-03-04 (Wed, 04 Mar 2026)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUGISel.td
    M llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUInstructionSelector.h
    M llvm/lib/Target/AMDGPU/SIInstructions.td
    A llvm/test/CodeGen/AMDGPU/bfe-i8-i16.ll
    M llvm/test/CodeGen/AMDGPU/bitcast_vector_bigint.ll
    M llvm/test/CodeGen/AMDGPU/buffer-fat-pointers-contents-legalization.ll
    M llvm/test/CodeGen/AMDGPU/fptoi.i128.ll
    M llvm/test/CodeGen/AMDGPU/permute_i8.ll

  Log Message:
  -----------
  [AMDGPU] Select v_bfe_u32 for i8/i16 (and (srl x, c), mask) (#182446)

Combine i8 and i16 (and (srl x, c), mask) instructions to v_bfe_32. This optimization is skipped true_i16 targets.

resolves issue #179494



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