[all-commits] [llvm/llvm-project] 2faa90: [AMDGPU] Retain subreg when legalising generic ope...

[Zach Goldthorpe via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2faa90a208a14b7e681dc9122a889c894823814a
      https://github.com/llvm/llvm-project/commit/2faa90a208a14b7e681dc9122a889c894823814a
  Author: Zach Goldthorpe <Zach.Goldthorpe at amd.com>
  Date:   2026-07-29 (Wed, 29 Jul 2026)

  Changed paths:
    M llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
    M llvm/test/CodeGen/AMDGPU/fix-sgpr-copies-f16-true16.mir

  Log Message:
  -----------
  [AMDGPU] Retain subreg when legalising generic operand (#212636)

When building a `COPY` to legalise a generic operand whose register
class does not match what is expected, the subregister is not retained
in the copy, and is not dropped from the newly created virtual
destination register.



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