flang tests


I’m getting started with writing tests for flang and have a few questions. First, would you recommend submitting tests to the the llvm-test-suite repository? (https://github.com/llvm/llvm-test-suite)

Second, I was informed in April that the fir-dev branch of the f18-llvm-project fork of flang is able to produce executable files from Fortran 77 source. Could someone explain how to use this capability and whether this capability has been merged upstream to the llvm-project repository? I can see from an error message that my locally installed flang is invoking gfortran to produce executable files. Do I need to pass a flag to tell flang to produce an executable program without invoking gfortran?