>On the other I’m a bit worried that once LLVM backend will take off for real, so much focus will concentrate on it, that other compilers (PGI, gfortran, Intel

>On the other I’m a bit worried that once LLVM backend will take off for real, so much focus will concentrate on it, that other compilers (PGI, gfortran, Intel Fortran) development will finally stall or even get dropped and we will wake up in future where LLVM behemoth swallowed all the competition. It is likely it will take years if not decades for the llvm based fortran compiler to match the optimization ability of compilers on hpc systems. I also will clarify that the previous statement was an understatement. gfortran is one thing, PGI or Intel compilers won't stall or fall out of use.