AMDGPU: Add some baseline test for mfma rewrite with subregister copies#153018

arsenm merged 1 commit intomainllvm/llvm-project:mainfrom

users/arsenm/amdgpu/add-tests-rewrite-mfma-agpr-with-subreg-copiesllvm/llvm-project:users/arsenm/amdgpu/add-tests-rewrite-mfma-agpr-with-subreg-copiesCopy head branch name to clipboard