gcc/testsuite/gcc.dg/vect/vect-strided-u16-i4.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    unsigned short c;
  12    unsigned short d;
  13 } s;
  14
  15 __attribute__ ((noinline)) int
  16 main1 (s *arr)
  17 {
  18   int i;
  19   s *ptr = arr;
  20   s res[N];
  21   unsigned short x, y, z, w;
  22
  23   for (i = 0; i < N; i++)
  24     {
  25       x = ptr->b - ptr->a;
  26       y = ptr->d - ptr->c;
  27       res[i].c = x + y;
  28       z =  ptr->a + ptr->c;
  29       w = ptr->b + ptr->d;
  30       res[i].a = z + w;
  31       res[i].d = x + y;
  32       res[i].b = x + y;
  33       ptr++;
  34     }
  35
  36   /* check results:  */
  37   for (i = 0; i < N; i++)
  38     {
  39       if (res[i].c != arr[i].b - arr[i].a + arr[i].d - arr[i].c
  40           || res[i].a != arr[i].a + arr[i].c + arr[i].b + arr[i].d
  41           || res[i].d != arr[i].b - arr[i].a + arr[i].d - arr[i].c
  42           || res[i].b != arr[i].b - arr[i].a + arr[i].d - arr[i].c)
  43         abort ();
  44     }
  45
  46   return 0;
  47 }
  48
  49 int main (void)
  50 {
  51   int i;
  52   s arr[N];
  53
  54   check_vect ();
  55
  56   for (i = 0; i < N; i++)
  57     {
  58       arr[i].a = i;
  59       arr[i].b = i * 2;
  60       arr[i].c = 17;
  61       arr[i].d = i+34;
  62       if (arr[i].a == 178)
  63          abort();
  64     }
  65
  66   main1 (arr);
  67
  68   return 0;
  69 }
  70
  71 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect"  { target { vect_interleave && vect_extract_even_odd } } } } */
  72 /* { dg-final { cleanup-tree-dump "vect" } } */
  73