fill_random
fill_random(fpr_in, sizeof(fpr_in));
fill_random(z_in, sizeof(z_in));
fill_random(z_out, sizeof(z_out));
fill_random(p_in, sizeof(p_in));
fill_random(p_out, sizeof(p_out));
fill_random(ffr_out, sizeof(ffr_out));
fill_random(za_in, sizeof(za_in));
fill_random(zt_in, sizeof(zt_in));
fill_random(gpr_in, sizeof(gpr_in));
fill_random(&v_expected, sizeof(v_expected));
fill_random(&fpmr_expected, sizeof(fpmr_expected));
fill_random(z_expected, __SVE_ZREGS_SIZE(__sve_vq_from_vl(vl)));
fill_random(p_expected, __SVE_PREGS_SIZE(__sve_vq_from_vl(vl)));
fill_random(&v_expected, sizeof(v_expected));
fill_random(za_expected, ZA_PT_ZA_SIZE(sme_vq));
fill_random(zt_expected, sizeof(zt_expected));
fill_random(&v_in, sizeof(v_in));
fill_random(&z_in, __SVE_ZREGS_SIZE(vq));
fill_random(&p_in, __SVE_PREGS_SIZE(vq));
fill_random(za_in, ZA_SIG_REGS_SIZE(sme_vq));
fill_random(zt_in, ZT_SIG_REG_BYTES);
fill_random(&fpmr_in, sizeof(fpmr_in));