This reverts commit f7a5f067885b7f6cc4a000c8392adf6b777a9108.
Fails to build with:
llvm/lib/Target/AMDGPU/AMDGPUMCInstLower.cpp:126:37: error: no member named 'OPERAND_LAST' in 'llvm::AMDGPU::OpName'
126 | uint16_t OpName = AMDGPU::OpName::OPERAND_LAST;