gcc/testsuite/gcc.dg/vect/vect-strided-store.c

   1 /* { dg-require-effective-target vect_float } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 void __attribute__((noinline))
   7 sumit (float * __restrict dest,
   8        float * __restrict src, float * __restrict src2,
   9        int stride, int n)
  10 {
  11   int i;
  12   for (i = 0; i < n; i++)
  13     dest[i*stride] = src[i] + src2[i];
  14 }
  15
  16 int main()
  17 {
  18   int i, stride;
  19   float src[] = {1, 2, 3, 4, 5, 6, 7, 8};
  20   float dest[64];
  21   check_vect ();
  22   for (stride = 0; stride < 8; stride++)
  23     {
  24       sumit (dest, src, src, stride, 8);
  25       if (!stride && dest[0] != 16)
  26         abort();
  27       else if (stride)
  28         for (i = 0; i < 8; i++)
  29           if (2*src[i] != dest[i*stride])
  30             abort ();
  31     }
  32   return 0;
  33 }
  34
  35 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */