[all-commits] [llvm/llvm-project] 4f6fa0: [AMDGPU][RegBankCombiner] Add cast_of_cast and con...

[Pierre van Houtryve via All-commits]

  Branch: refs/heads/users/pierre-vh/cast-combines-rbcomb
  Home:   https://github.com/llvm/llvm-project
  Commit: 4f6fa078b8b40ac0eef21fd3089b06653e1aa61b
      https://github.com/llvm/llvm-project/commit/4f6fa078b8b40ac0eef21fd3089b06653e1aa61b
  Author: pvanhout <pierre.vanhoutryve at amd.com>
  Date:   2025-03-17 (Mon, 17 Mar 2025)

  Changed paths:
    M llvm/lib/Target/AMDGPU/AMDGPUCombine.td
    M llvm/test/CodeGen/AMDGPU/GlobalISel/fshl.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/fshr.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/saddsat.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/shl-ext-reduce.ll
    M llvm/test/CodeGen/AMDGPU/GlobalISel/ssubsat.ll
    M llvm/test/CodeGen/AMDGPU/llvm.is.fpclass.f16.ll
    M llvm/test/CodeGen/AMDGPU/v_sat_pk_u8_i16.ll

  Log Message:
  -----------
  [AMDGPU][RegBankCombiner] Add cast_of_cast and constant_fold_cast combines

We can add a bunch of exts/truncs during RBSelect, we should be able to fold
them away afterwards.



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