gcc/testsuite/gcc.dg/vect/vect-104.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdlib.h>
   4 #include <stdarg.h>
   5 #include "tree-vect.h"
   6
   7 #define N 3
   8
   9 struct extraction
  10 {
  11   int a[N][N];
  12   int b[N][N];
  13 };
  14
  15 static int a[N][N] = {{1,2,3},{4,5,6},{7,8,9}};
  16 static int b[N][N] = {{17,24,7},{0,2,3},{4,31,82}};
  17 static int c[N][N] = {{1,2,3},{4,6,8},{8,9,9}};
  18
  19 int main1 (int x) {
  20   int i,j;
  21   struct extraction *p;
  22   p = (struct extraction *) malloc (sizeof (struct extraction));
  23
  24   for (i = 0; i < N; i++)
  25    {
  26     for (j = 0; j < N; j++)
  27      {
  28        p->a[i][j] = a[i][j];
  29        p->b[i][j] = b[i][j];
  30        if (x == 135)
  31          abort (); /* to avoid vectorization  */
  32      }
  33    }
  34
  35   /* Not vectorizable: distance = 1.  */
  36   for (i = 1; i < N; i++)
  37   {
  38     for (j = 0; j < N; j++)
  39     {
  40        *((int *)p + x + i + j) = *((int *)p + x + i + j + 1);
  41     }
  42   }
  43
  44   /* check results: */
  45   for (i = 0; i < N; i++)
  46    {
  47     for (j = 0; j < N; j++)
  48      {
  49        if (p->a[i][j] != c[i][j])
  50          abort();
  51      }
  52   }
  53   return 0;
  54 }
  55
  56 int main (void)
  57 {
  58   check_vect ();
  59
  60   return main1 (N);
  61 }
  62
  63 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 0 "vect" } } */
  64 /* { dg-final { scan-tree-dump-times "possible dependence between data-refs" 1 "vect" } } */
  65 /* { dg-final { cleanup-tree-dump "vect" } } */
  66