Compilation of enumerated DATA statements is extremely slow. Related PR: * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13465 Related threads on ML: * http://gcc.gnu.org/ml/fortran/2004-08/msg00131.html * http://gcc.gnu.org/ml/fortran/2006-09/msg00025.html
Shell script to generate example data: $> cat datagen.sh #! /bin/bash outfile=data.f90 dim1=50 dim2=1000 echo "MODULE appdata" > ${outfile} echo "INTEGER :: thedata(${dim1}, ${dim2})" >> ${outfile} for i in `seq 1 ${dim1}` ; do for j in `seq 1 ${dim2}` ; do echo "DATA thedata(${i}, ${j}) / $((i*j)) /" >> ${outfile} done done echo "END MODULE" >> ${outfile} P4 3.2 GHz, 2GB RAM: $> bash datagen.sh $> time gfortran-4.2 -c data.f90 real 3m31.646s user 3m29.545s sys 0m0.172s -- Summary: Extremely slow compilation of enumerated DATA statements. Product: gcc Version: 4.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: franke dot daniel at gmail dot com GCC build triplet: i686-pc-linux-gnu GCC host triplet: i686-pc-linux-gnu GCC target triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28974