gcc/testsuite/gcc.dg/vect/wrapv-vect-7.c

   1 /* { dg-additional-options "-fwrapv" } */
   2 /* { dg-require-effective-target vect_int } */
   3 /* { dg-add-options bind_pic_locally } */
   4
   5 #include <stdarg.h>
   6 #include "tree-vect.h"
   7
   8 #define N 128
   9
  10 short sa[N];
  11 short sb[N];
  12
  13 int main1 ()
  14 {
  15   int i;
  16
  17   for (i = 0; i < N; i++)
  18     {
  19       sb[i] = 5;
  20     }
  21
  22   /* check results:  */
  23 #pragma GCC novector
  24   for (i = 0; i < N; i++)
  25     {
  26       if (sb[i] != 5)
  27         abort ();
  28     }
  29
  30   for (i = 0; i < N; i++)
  31     {
  32       sa[i] = sb[i] + (short)100;
  33     }
  34
  35   /* check results:  */
  36 #pragma GCC novector
  37   for (i = 0; i < N; i++)
  38     {
  39       if (sa[i] != 105)
  40         abort ();
  41     }
  42
  43   return 0;
  44 }
  45
  46 int main (void)
  47 {
  48   check_vect ();
  49
  50   return main1 ();
  51 }
  52
  53 /* Fails for 32-bit targets that don't vectorize PLUS.  */
  54 /* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect" } } */
  55 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 0 "vect" } } */