1 #define N 100
2 
3 void __attribute__ ((noipa))
foo(int * out,int * in,int step)4 foo (int *out, int *in, int step)
5 {
6   for (int i = 0; i < N; ++i)
7     {
8       out[0] = in[i];
9       out[1] = 2;
10       out += step;
11     }
12 }
13 
14 int in[N];
15 int out[N * 2];
16 
17 int
main(void)18 main (void)
19 {
20   for (int i = 0; i < N; ++i)
21     {
22       in[i] = i * (i + 1);
23       asm volatile ("" ::: "memory");
24     }
25 
26   foo (out, in, 1);
27   for (int i = 0; i < N; ++i)
28     if (out[i] != in[i])
29       __builtin_abort ();
30   if (out[N] != 2)
31     __builtin_abort ();
32 
33   foo (out + N - 1, in, -1);
34   if (out[0] != in[N - 1])
35     __builtin_abort ();
36   for (int i = 1; i <= N; ++i)
37     if (out[i] != 2)
38       __builtin_abort ();
39 
40   return 0;
41 }
42 
43 /* { dg-final { scan-tree-dump-times "LOOP VECTORIZED" 1 "vect" { target { { ! vect_no_align } && vect_int } } } } */
44