[all-commits] [llvm/llvm-project] 14d006: AMDGPU/GlobalISel: Run redundant_and combine in Re...

[Petar Avramovic via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 14d006c53c67ded7da00e7880c58f2c7e25ee1f1
      https://github.com/llvm/llvm-project/commit/14d006c53c67ded7da00e7880c58f2c7e25ee1f1
  Author: Petar Avramovic <Petar.Avramovic at amd.com>
  Date:   2024-10-16 (Wed, 16 Oct 2024)

  Changed paths:
    M llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp
    M llvm/lib/Target/AMDGPU/AMDGPUCombine.td
    M llvm/test/CodeGen/AMDGPU/GlobalISel/artifact-combiner-asserts.ll
    A llvm/test/CodeGen/AMDGPU/GlobalISel/regbankcombiner-redundant-and.mir
    M llvm/test/CodeGen/AMDGPU/fptoi.i128.ll
    M llvm/test/CodeGen/AMDGPU/itofp.i128.ll

  Log Message:
  -----------
  AMDGPU/GlobalISel: Run redundant_and combine in RegBankCombiner (#112353)

Combine is needed to clear redundant ANDs with 1 that will be
created by reg-bank-select to clean-up high bits in register.
Fix replaceRegWith from CombinerHelper:
If copy had to be inserted, first create copy then delete MI.
If MI is deleted first insert point is not valid.



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