https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63673
--- Comment #6 from Konstantinos Margaritis <markos at freevec dot org> --- Hi Bill, Thanks for the fix in the double * patch. It's listed as a valid option in: https://gcc.gnu.org/onlinedocs/gcc/PowerPC-AltiVec_002fVSX-Built-in-Functions.html vector double vec_vsx_ld (int, const double *); Similarly for vec_vsx_st: void vec_vsx_st (vector double, int, double *); Also, thanks for the clarifications for the lxvw4x.