// File: kernel.cpp
#include "loop_108.h"
#include <stdint.h>
#include <arm_sve.h>
#define restrict __restrict
#define SC_SVE_ATTR
#define FOR_COND(P, S, I, N) svptest_first(svptrue_b##S(), P = svwhilelt_b##S(I, N))
#define FOR_LOOP(T, I, M, N, P, S, W) for (T I = M; FOR_COND(P, S, I, N); I += svcnt##W())
#define FOR_LOOP_8(T, I, M, N, P)  FOR_LOOP(T, I, M, N, P, 8, b)
#define FOR_LOOP_16(T, I, M, N, P) FOR_LOOP(T, I, M, N, P, 16, h)
#define FOR_LOOP_32(T, I, M, N, P) FOR_LOOP(T, I, M, N, P, 32, w)
#define FOR_LOOP_64(T, I, M, N, P) FOR_LOOP(T, I, M, N, P, 64, d)
static inline uint32_t get_sve_vl(void) {
  uint64_t vl = 0; asm volatile("incb %[vl], all, mul #8" : [vl] "+r"(vl) : :);
  return (uint32_t)vl;
}
static inline uint32_t get_vl(void) { return get_sve_vl(); }

extern "C" void inner_loop_108(struct loop_108_data * input)

{
  uint32_t * rgba = input->rgba;
  uint8_t * y = input->y;
  int64_t n = input->n;

  svbool_t p;
  FOR_LOOP_8(int64_t, i, 0, n, p) {
    svuint8x4_t u = svld4(p, (uint8_t *)(rgba + i));
    svuint8_t v;
    v = svlsr_x(p, svget4(u, 3), 2);
    v = svsra(v, svget4(u, 2), 1);
    v = svsra(v, svget4(u, 2), 3);
    v = svsra(v, svget4(u, 1), 3);
    svst1(p, &(y[i]), v);
  }
}