gcc/testsuite/gcc.dg/vect/vect-77.c

   1 /* { dg-require-effective-target vect_int } */
   2 /* { dg-additional-options "-fdump-tree-optimized-details-blocks" } */
   3
   4 #include <stdarg.h>
   5 #include "tree-vect.h"
   6
   7 #define N 8
   8 #define OFF 8
   9
  10 /* Check handling of accesses for which the "initial condition" -
  11    the expression that represents the first location accessed - is
  12    more involved than just an ssa_name.  */
  13
  14 int ib[N+OFF] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10, 14, 22, 26, 34};
  15
  16 __attribute__ ((noinline))
  17 int main1 (int *ib, int off)
  18 {
  19   int i;
  20   int ia[N];
  21
  22   for (i = 0; i < N; i++)
  23     {
  24       ia[i] = ib[i+off];
  25     }
  26
  27
  28   /* check results:  */
  29 #pragma GCC novector
  30   for (i = 0; i < N; i++)
  31     {
  32      if (ia[i] != ib[i+off])
  33         abort ();
  34     }
  35
  36   return 0;
  37 }
  38
  39 int main (void)
  40 {
  41   check_vect ();
  42
  43   main1 (ib, 8);
  44   return 0;
  45 }
  46
  47 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
  48 /* { dg-final { scan-tree-dump-not "Invalid sum" "optimized" } } */