1  /* { dg-do run { target { bmi2 && ia32 } } } */
       2  /* { dg-options "-mbmi2 -O2" } */
       3  
       4  #include "bmi2-check.h"
       5  
       6  __attribute__((noinline))
       7  unsigned long long
       8  calc_mul_u32 (unsigned volatile a, unsigned b)
       9  {
      10    unsigned long long res = 0;
      11    int i;
      12    for (i = 0; i < b; ++i)
      13      res += a;
      14  
      15    return res;
      16  }
      17  
      18  __attribute__((noinline, regparm (2)))
      19  unsigned long long
      20  gen_mulx (unsigned a, unsigned b)
      21  {
      22    unsigned long long res;
      23  
      24    res = (unsigned long long)a * b;
      25  
      26    return res;
      27  }
      28  
      29  static void
      30  bmi2_test ()
      31  {
      32    unsigned i;
      33    unsigned a = 0xce7ace0;
      34    unsigned b = 0xfacefff;
      35    unsigned long long res, res_ref;
      36  
      37    for (i = 0; i < 5; ++i) {
      38      a = a * (i + 1);
      39      b = b / (i + 1);
      40  
      41      res_ref = calc_mul_u32 (a, b);
      42      res = gen_mulx (a, b);
      43  
      44      if (res != res_ref)
      45        abort();
      46    }
      47  }