http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46842
--- Comment #11 from Tobias Burnus <burnus at gcc dot gnu.org> 2010-12-09 11:22:14 UTC --- I fear that debugging this will be not easy - especially as to my knowledge none of the gfortran developers has access to SPEC CPU 2006. * * * I tried http://sourceforge.net/projects/tonto-chem/files/tonto/2.3/tonto-2.3.1.tar.bz2/download If I compile it with a version before the regression, namely 4.6.0 20100909 (experimental) [trunk revision 164046] I get only failures with "make tests" - I have to recompile with "-fno-sign-zero" to reduce the failures. However, I still get failures (= differences) to the result of the Intel compiler. I think one could still try to find differences between such a version and a version after the TRANSPOSE committal. Compiling notice: You need to remove the "-std=f95" and - to speed up the very slow compile a tiny bit - remove also "-Wall -O". Additionally, as mentioned above, consider using "-fno-sign-zero". (In my case, the configuration is in platforms/GNU-gfortran-on-LINUX.) Unfortunately, almost all changes trigger a complete recompilation - and "make -j5" does not work. * * * I could find TRANSPOSEs in the files mo_localiser.F90, molecule.F90, vec{atom}.F90, marchingcube.F90, isosurface.F90, mat{cpx}.F90, mat3{real}.F90, spacegroup.F90, periodic_fmm_level.F90, cluster.F90, mat{real}.F90, run_mat{real}.F90, molecule.main.F90, unit_cell.F90 and crystal.F90. I tried to create some failing test myself, but they were handled properly.
