https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77897
--- Comment #1 from Bill Long <longb at cray dot com> --- Compiling these files appears to have a problem when the target is set to Intel KNL. The compiler appears to be generating incorrect register and instruction names, leading to assembler messages. See with gfortran 6.2. Compiles OK with any of these changes: 1) Change target to Sandybridge 2) Remove the -O3 option 3) Use a different vendor compiler (Cray)
