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/* { dg-do run { target { bmi2 && { ia32 } } } } */

/* { dg-options "-mbmi2 -O2" } */

#include <x86intrin.h>

#include "bmi2-check.h"

__attribute__((noinline))

unsigned long long

calc_mul_u32 (unsigned volatile a, unsigned b)

{

  unsigned long long res = 0;

  int i;

  for (i = 0; i < b; ++i)

    res += a;

  return res;

}

__attribute__((noinline, regparm (2)))

unsigned calc_mulx_u32 (unsigned x, unsigned y, unsigned *res_h)

{

  return (unsigned) _mulx_u32 (x, y, res_h);

}

static void

bmi2_test ()

{

  unsigned i;

  unsigned a = 0xce7ace0;

  unsigned b = 0xfacefff;

  unsigned res_l, res_h;

  unsigned long long res, res_ref;

  for (i = 0; i < 5; ++i) {

    a = a * (i + 1);

    b = b / (i + 1);

    res_ref = calc_mul_u32 (a, b);

    res_l = calc_mulx_u32 (a, b, &res_h);

    res = ((unsigned long long) res_h << 32) | res_l;

    if (res != res_ref)

      abort();

  }

}