1 /* { dg-do run } */
2 /* { dg-options "-O2 -fno-inline -fpredictive-commoning -fdump-tree-pcom-details" } */
3
4 int arr[105] = {2, 3, 5, 7, 11};
5 int result0[10] = {2, 3, 5, 7, 11};
6 int result1[10] = {0, 3, -1, -2, 11, 0};
7 int result2[10] = {0, 0, -1, -1, -2, 0};
8 int result3[10] = {0, 0, 0, -1, -1, -2, 0};
9 int result4[10] = {0, 0, 0, 0, -1, -1, -2, 0};
10 int result100[105] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
11 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
12 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
13 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
14 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
15 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
16 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -1, -2, 0};
17
18 extern void abort (void);
19
foo(int * a,int len)20 void __attribute__((noinline)) foo (int *a, int len)
21 {
22 int i;
23 for (i = 0; i < len; i++)
24 {
25 a[i] = 0;
26 a[i + 2] = -1;
27 a[i + 3] = -2;
28 }
29 }
30
check(int * a,int * res,int len)31 void check (int *a, int *res, int len)
32 {
33 int i;
34
35 for (i = 0; i < len; i++)
36 if (a[i] != res[i])
37 abort ();
38 }
39
main(void)40 int main (void)
41 {
42 foo (arr, 0);
43 check (arr, result0, 10);
44
45 foo (arr, 1);
46 check (arr, result1, 10);
47
48 foo (arr, 2);
49 check (arr, result2, 10);
50
51 foo (arr, 3);
52 check (arr, result3, 10);
53
54 foo (arr, 4);
55 check (arr, result4, 10);
56
57 foo (arr, 100);
58 check (arr, result100, 105);
59
60 return 0;
61 }
62 /* { dg-final { scan-tree-dump "Store-stores chain" "pcom"} } */
63