1 /* Verify straight-line strength reduction for a candidate with a basis
2    hidden by two phi dependences, and having a known stride.  */
3 
4 /* { dg-do compile } */
5 /* { dg-options "-O3 -fdump-tree-optimized" } */
6 
7 extern void
8 g (void);
9 
10 int
f(int c,int i)11 f (int c, int i)
12 {
13   int a1, a2, a3, x1, x2, x3, x;
14 
15   a1 = i * 16;
16   x1 = c + a1;
17 
18   i = i + 2;
19   a2 = i * 16;
20   x2 = c + a2;
21 
22   if (x2 > 6)
23     {
24       if (c < 200)
25 	i = i + 2;
26       else
27 	i = i + 4;
28       g ();
29     }
30   else
31     i = i + 6;
32 
33   i = i + 2;
34   a3 = i * 16;
35   x3 = c + a3;
36 
37   x = x1 + x2 + x3;
38   return x;
39 }
40 
41 /* { dg-final { scan-tree-dump-times " \\* " 1 "optimized" } } */
42 /* { dg-final { scan-tree-dump-times "PHI" 2 "optimized" } } */
43