gcc/testsuite/gcc.dg/vect/vect-strided-u16-i2.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 128
   7
   8 typedef struct {
   9    unsigned short a;
  10    unsigned short b;
  11 } s;
  12
  13 __attribute__ ((noinline)) int
  14 main1 (s *arr)
  15 {
  16   s *ptr = arr;
  17   s res[N];
  18   int i;
  19
  20   for (i = 0; i < N; i++)
  21     {
  22       res[i].a = ptr->b - ptr->a;
  23       res[i].b = ptr->b + ptr->a;
  24       ptr++;
  25     }
  26
  27   /* check results:  */
  28   for (i = 0; i < N; i++)
  29     {
  30       if (res[i].a != arr[i].b - arr[i].a
  31           || res[i].b != arr[i].a + arr[i].b)
  32         abort ();
  33     }
  34
  35   return 0;
  36 }
  37
  38 int main (void)
  39 {
  40   int i;
  41   s arr[N];
  42
  43   check_vect ();
  44
  45   for (i = 0; i < N; i++)
  46     {
  47       arr[i].a = i;
  48       arr[i].b = i * 2;
  49       if (arr[i].a == 178)
  50          abort();
  51     }
  52
  53   main1 (arr);
  54
  55   return 0;
  56 }
  57
  58 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect"  { target { vect_interleave && vect_extract_even_odd } } } } */
  59 /* { dg-final { cleanup-tree-dump "vect" } } */
  60