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Editing: cpu_neon.c
#ifdef _MSC_VER #include <Intrin.h> #endif #include <arm_neon.h> int main(int argc, char **argv) { // passing from untraced pointers to avoid optimizing out any constants // so we can test against the linker. float *src = (float*)argv[argc-1]; float32x4_t v1 = vdupq_n_f32(src[0]), v2 = vdupq_n_f32(src[1]); int ret = (int)vgetq_lane_f32(vmulq_f32(v1, v2), 0); #ifdef __aarch64__ double *src2 = (double*)argv[argc-2]; float64x2_t vd1 = vdupq_n_f64(src2[0]), vd2 = vdupq_n_f64(src2[1]); ret += (int)vgetq_lane_f64(vmulq_f64(vd1, vd2), 0); #endif return ret; }
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