[all-commits] [llvm/llvm-project] b70040: AMDGPU: Stop using aligned VGPR classes for addReg...

[Matt Arsenault via All-commits]

  Branch: refs/heads/users/arsenm/amdgpu/stop-using-aligned-vgpr-classes-addRegisterClass
  Home:   https://github.com/llvm/llvm-project
  Commit: b70040bb06ddec1f28c0e7e5eb842fa0072d3daf
      https://github.com/llvm/llvm-project/commit/b70040bb06ddec1f28c0e7e5eb842fa0072d3daf
  Author: Matt Arsenault <Matthew.Arsenault at amd.com>
  Date:   2025-09-15 (Mon, 15 Sep 2025)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIISelLowering.cpp
    M llvm/test/CodeGen/AMDGPU/mfma-loop.ll

  Log Message:
  -----------
  AMDGPU: Stop using aligned VGPR classes for addRegisterClass

This is unnecessary. At use emission time, InstrEmitter will
use the common subclass of the value type's register class and
the use instruction register classes. This removes one of the
obstacles to treating special case instructions that do not have
the alignment requirement overly conservatively.



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