Fork channel

Create a new channel as a copy of main.

Rename channel

Rename main to:

Delete channel

Delete main? This cannot be undone.

CMakeLists.txt
add_llvm_component_library(LLVMLoongArchDesc
  LoongArchAsmBackend.cpp
  LoongArchBaseInfo.cpp
  LoongArchELFObjectWriter.cpp
  LoongArchInstPrinter.cpp
  LoongArchMCAsmInfo.cpp
  LoongArchMCTargetDesc.cpp
  LoongArchMCCodeEmitter.cpp
  LoongArchMatInt.cpp

  LINK_COMPONENTS
  MC
  LoongArchInfo
  Support

  ADD_TO_COMPONENT
  LoongArch
  )