https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109949
--- Comment #7 from Matthias Kretz (Vir) <mkretz at gcc dot gnu.org> --- > You should backport to N-1 first [...] That was my intent. My workflow had not yet adapted to the existence of releases/gcc-13. Fixed. > never use -mpower9-vector and friends I use -mpcu in my dejagnu boards (and the equivalent for 'check-simd'). IIUC the -maltivec -mpower9-vector flags are added by check_vect_support_and_set_flags in lib/target-supports.exp. The problem was a branch that I apparently never tested (because the check-simd testsuite wants to compile *and* run). https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=libstdc%2B%2B-v3/include/experimental/bits/simd_ppc.h;h=eca1b34241bb4efdbbb6490550750d81aee248b3;hb=HEAD#l133 The `vec_cntm(__to_intrin(__kv), 1)` call uses an incorrect type for the first argument. The compiler message isn't very helpful, though. Patch coming up.