Based on the front-end of a mature, commercial Fortran compiler, see - https://developer.arm.com/-/media/developer/developers/hpc/files/ARM-HPC-UG-SC16-PGI.pdf

Based on the front-end of a mature, commercial Fortran compiler, see - https://developer.arm.com/-/media/developer/developers/hpc/files/ARM-HPC-UG-SC16-PGI.pdf https://developer.arm.com/-/media/developer/developers/hpc/f... I know quite a few Fortran programmers, most of whom will avoid Gfortran because it lacks the features and performance of the commercial alternatives. When you consider that a lot of these people write code for large scale computer clusters and/or supercomputers, the cost of something like Intel Fortran pales in comparison to the cost of the hardware. I suspect this is a big part of why Gfortran is not of the same caliber as GCC