gcc/testsuite/gcc.dg/vect/vect-strided-same-dr.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 s buffer1[N], buffer2[N];
  14
  15 __attribute__ ((noinline)) int
  16 main1 (s * __restrict__  pIn, s* __restrict__ pOut)
  17 {
  18   unsigned short i, x, y, d;
  19   s *p, *q;
  20
  21   p = pIn;
  22   q = pOut;
  23
  24   for (i = 0; i < N/2; i++)
  25     {
  26       x = pIn->a + 5;
  27       y = pIn->a + 2;
  28       pOut->a = x;
  29       pOut->b = pIn->b;
  30       pOut++;
  31       pOut->a = y;
  32       pOut->b = pIn->b;
  33       pOut++;
  34       pIn++;
  35     }
  36
  37   /* check results:  */
  38   for (i = 0; i < N/2; i++)
  39     {
  40       if (q->a != p->a + 5
  41           || q->b != p->b)
  42          abort ();
  43       q++;
  44       if (q->a != p->a + 2
  45           || q->b != p->b)
  46         abort ();
  47       q++;
  48       p++;
  49     }
  50
  51   return 0;
  52 }
  53
  54 int main (void)
  55 {
  56   short i;
  57
  58   for (i = 0; i < N; i++)
  59     {
  60       buffer1[i].a = i;
  61       buffer1[i].b = i + 8;
  62       buffer2[i].a = i * 3;
  63       buffer2[i].b = i * 2;
  64       if (buffer1[i].a == 500)
  65          abort();
  66     }
  67
  68   check_vect ();
  69
  70   main1 (buffer1, buffer2);
  71
  72   return 0;
  73 }
  74
  75 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect"  { target { vect_interleave && vect_extract_even_odd } } } } */
  76 /* { dg-final { cleanup-tree-dump "vect" } } */