gcc/testsuite/gcc.dg/vect/vect-64.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 16
   7
   8 int main1 ()
   9 {
  10   int i, j;
  11   int ib[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
  12   int ia[N][4][N+1];
  13   int ic[N][N][3][13];
  14   int id[N][N][N];
  15
  16   /* Multidimensional array. Not aligned: vectorizable. */
  17   for (i = 0; i < N; i++)
  18     {
  19       for (j = 0; j < N; j++)
  20         {
  21            ia[i][1][j] = ib[i];
  22         }
  23     }
  24
  25   /* Multidimensional array. Aligned: vectorizable. */
  26   for (i = 0; i < N; i++)
  27     {
  28       for (j = 0; j < N; j++)
  29         {
  30            ic[i][1][1][j] = ib[i];
  31         }
  32     }
  33
  34   /* Multidimensional array. Not aligned: vectorizable. */
  35   for (i = 0; i < N; i++)
  36     {
  37       for (j = 0; j < N; j++)
  38         {
  39            id[i][1][j+1] = ib[i];
  40         }
  41     }
  42
  43   /* check results: */
  44   for (i = 0; i < N; i++)
  45     {
  46       for (j = 0; j < N; j++)
  47         {
  48            if (ia[i][1][j] != ib[i])
  49               abort();
  50         }
  51     }
  52
  53   /* check results: */
  54   for (i = 0; i < N; i++)
  55     {
  56       for (j = 0; j < N; j++)
  57         {
  58            if (ic[i][1][1][j] != ib[i])
  59               abort();
  60         }
  61     }
  62
  63   /* check results: */
  64   for (i = 0; i < N; i++)
  65     {
  66       for (j = 0; j < N; j++)
  67         {
  68            if (id[i][1][j+1] != ib[i])
  69               abort();
  70         }
  71     }
  72
  73   return 0;
  74 }
  75
  76 int main (void)
  77 {
  78   check_vect ();
  79
  80   return main1 ();
  81 }
  82
  83 /* { dg-final { scan-tree-dump-times "vectorized 3 loops" 1 "vect" } } */
  84 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 0 "vect" } } */
  85 /* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 2 "vect" } } */