#ifdef _MSC_VER #include <Intrin.h> #endif #include <arm_neon.h> int main(int argc, char **argv) { unsigned char *src = (unsigned char*)argv[argc-1]; uint8x16_t v1 = vdupq_n_u8(src[0]), v2 = vdupq_n_u8(src[1]); uint32x4_t va = vdupq_n_u32(3); int ret = (int)vgetq_lane_u32(vdotq_u32(va, v1, v2), 0); #ifdef __aarch64__ ret += (int)vgetq_lane_u32(vdotq_laneq_u32(va, v1, v2, 0), 0); #endif return ret; }