llvm-project

5109361d - [polly][CMake] Replace `elseif ()` with `else ()`

[polly][CMake] Replace `elseif ()` with `else ()` The no-argument elseif resulted in the warning below: CMake Warning (dev) at polly/lib/External/CMakeLists.txt:30 (elseif): ELSEIF called with no arguments, it will be skipped.