https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87157
--- Comment #3 from Bill Schmidt <wschmidt at gcc dot gnu.org> --- I don't have a recently built gcc lying around, but from an earlier version, here's the command line from the testsuite log: /home/wschmidt/gcc/build/gccgit-test/gcc/xgcc -B/home/wschmidt/gcc/build/gccgit-test/gcc/ /home/wschmidt/gccgit/gcc/gcc/testsuite/gcc.dg/vect/costmodel/ppc/costmodel-vect-33.c -m64 -fno-diagnostics-show-caret -fdiagnostics-color=never -O2 -ftree-vectorize -fvect-cost-model=dynamic -fno-common -maltivec -fdump-tree-vect-details -S -o costmodel-vect-33.s One valid configuration triple would be powerpc64le-linux-gnu, using either --with-cpu=power8 or --with-cpu=power9. I can post the vectorization dump information after I have time to build a new compiler.