gnu/dist/gcc4/gcc/testsuite/gcc.dg/vect/vect-31.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 32
   7
   8 struct t{
   9   int k[N];
  10   int l;
  11 };
  12
  13 struct s{
  14   char a;       /* aligned */
  15   char b[N-1];  /* unaligned (offset 1B) */
  16   char c[N];    /* aligned (offset NB) */
  17   struct t d;   /* aligned (offset 2NB) */
  18   struct t e;   /* unaligned (offset 2N+4N+4 B) */
  19 };
  20
  21 int main1 ()
  22 {
  23   int i;
  24   struct s tmp;
  25
  26   /* unaligned */
  27   for (i = 0; i < N/2; i++)
  28     {
  29       tmp.b[i] = 5;
  30     }
  31
  32   /* check results:  */
  33   for (i = 0; i <N/2; i++)
  34     {
  35       if (tmp.b[i] != 5)
  36         abort ();
  37     }
  38
  39   /* aligned */
  40   for (i = 0; i < N/2; i++)
  41     {
  42       tmp.c[i] = 6;
  43     }
  44
  45   /* check results:  */
  46   for (i = 0; i <N/2; i++)
  47     {
  48       if (tmp.c[i] != 6)
  49         abort ();
  50     }
  51
  52   /* aligned */
  53   for (i = 0; i < N/2; i++)
  54     {
  55       tmp.d.k[i] = 7;
  56     }
  57
  58   /* check results:  */
  59   for (i = 0; i <N/2; i++)
  60     {
  61       if (tmp.d.k[i] != 7)
  62         abort ();
  63     }
  64
  65   /* unaligned */
  66   for (i = 0; i < N/2; i++)
  67     {
  68       tmp.e.k[i] = 8;
  69     }
  70
  71   /* check results:  */
  72   for (i = 0; i <N/2; i++)
  73     {
  74       if (tmp.e.k[i] != 8)
  75         abort ();
  76     }
  77
  78   return 0;
  79 }
  80
  81 int main (void)
  82 {
  83   check_vect ();
  84
  85   return main1 ();
  86 }
  87
  88 /* { dg-final { scan-tree-dump-times "vectorized 4 loops" 1 "vect" } } */
  89 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 0 "vect" } } */
  90 /* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 2 "vect" } } */
  91 /* { dg-final { cleanup-tree-dump "vect" } } */