[Bug fortran/91646] gfortran takes long time and consumes a lot of memory

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91646

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
The FE generates an absolutely _huge_ functions (2.2 million lines of .original
dump) for __copy_lvt_statsdatamod_Stats_struc.  It's impossible to tell
if the function generated makes any sense - a smaller example needs to be
looked at but I suspect unnecessary redundancies (aka combinatorical
explosion).