https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82518
--- Comment #18 from Aldy Hernandez <aldyh at gcc dot gnu.org> --- (In reply to Christophe Lyon from comment #17) > (In reply to Aldy Hernandez from comment #12) > > > along with the isub8 subroutine, and continue chopping things similarly > > upward until you get to the abort that fails. Then see if you can chop > > non-dependent things from the top down until you get to the smallest block > > that has no problem before 197671 and a problem after 197815 (with -O3 -g > > -fno-vect-cost-model as suggested before). > > > Hmmm does -O3 overrides -fno-vect-cost-model? > > When I running the testsuite with qemu/-fno-vect-cost-model (as target > board), my logs show: > [...] > /home/christophe.lyon/src/GCC/sources/gcc-fsf/r197671/gcc/testsuite/gfortran. > fortran-torture/execute/in-pack.f90 -fno-vect-cost-model > -fno-diagnostics-show-caret -w -O3 -g [....] > > so I may not have been testing what I thought :( -fno-vect-cost-model should take effect regardless of the -O3 specified. That is, the order shouldn't matter. BTW, I only mentioned -O3 -fno-vect-cost-model -g because that is what was suggested by Jakub in comment #3.
