http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50191
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-08-29 14:26:57 UTC --- I still can't reproduce it (with the x86_64-linux -> powerpc64-linux cross compiler, even when using the auto-host.h provided here): ./gfortran --version -B ./; ./f951 -g -O3 -fprofile-generate -ffast-math \ -funroll-loops -m64 -mcpu=power7 -mtune=power7 pr50191.f -fdump-rtl-vartrack \ -quiet -w; sed -n '/^(note/,/^$/p' pr50191.f.213r.vartrack | grep -i unspec GNU Fortran (GCC) 4.7.0 20110827 (experimental) Copyright (C) 2011 Free Software Foundation, Inc. GNU Fortran comes with NO WARRANTY, to the extent permitted by law. You may redistribute copies of GNU Fortran under the terms of the GNU General Public License. For more information about these matters, see the file named COPYING