1  /* { dg-require-effective-target vect_int } */
       2  
       3  #include <stdarg.h>
       4  #include "tree-vect.h"
       5  
       6  #define N 16
       7  signed char data_ch[N] =
       8    { 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28 };
       9  #define SUM 210
      10  
      11  __attribute__ ((noinline)) int
      12  foo ()
      13  {
      14    int i;
      15    signed short shortsum = 0;
      16  
      17    /* widenning sum: sum chars into short.
      18       The widening-summation pattern is currently not detected because of this
      19       patch:
      20  
      21       2005-12-26  Kazu Hirata  <kazu@codesourcery.com>
      22                                                                                  
      23          PR tree-optimization/25125
      24  
      25       but we still handle the reduction.
      26     */
      27  
      28    for (i = 0; i < N; i++)
      29      {
      30        shortsum += data_ch[i];
      31      }
      32  
      33    /* check results:  */
      34    if (shortsum != SUM)
      35      abort ();
      36  
      37    return 0;
      38  }
      39  
      40  int
      41  main (void)
      42  {
      43    check_vect ();
      44    return foo ();
      45  }
      46  
      47  /* { dg-final { scan-tree-dump-times "vect_recog_widen_sum_pattern: detected" 1 "vect" { xfail *-*-* } } } */
      48  /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { vect_widen_sum_qi_to_hi } } } } */