1  /* Disabling epilogues until we find a better way to deal with scans.  */
       2  /* { dg-additional-options "--param vect-epilogues-nomask=0" } */
       3  /* { dg-require-effective-target vect_int } */
       4  
       5  #include <stdarg.h>
       6  #include "tree-vect.h"
       7  
       8  #define N 64
       9  
      10  #define DOT2 43680
      11  
      12  unsigned short X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
      13  unsigned short Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
      14  
      15  /* ushort->int->uint dot product: the multiplication promotes the ushorts
      16     to int, and then the product is converted to uint for the addition.  */
      17  __attribute__ ((noinline)) unsigned int
      18  foo2(int len) {
      19    int i;
      20    unsigned int result = 0;
      21  
      22    for (i=0; i<len; i++) {
      23      result += (X[i] * Y[i]);
      24    }
      25    return result;
      26  }
      27  
      28  
      29  int main (void)
      30  {
      31    unsigned int  dot2;
      32    int i;
      33  
      34    check_vect ();
      35  
      36    for (i=0; i<N; i++) {
      37      X[i] = i;
      38      Y[i] = 64-i;
      39      __asm__ volatile ("");
      40    }
      41  
      42    dot2 = foo2 (N);
      43    if (dot2 != DOT2)
      44      abort ();
      45  
      46    return 0;
      47  }
      48  
      49  /* { dg-final { scan-tree-dump-times "vect_recog_dot_prod_pattern: detected" 1 "vect" } } */
      50  
      51  /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { vect_pack_trunc || vect_udot_hi } } } } */