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, 13, 17, 19};
5 int result0[10] = {2, 3, 5, 7, 11, 13, 17, 19};
6 int result1[10] = {0, -1, -2, -3, -4, -5, 17, 19};
7 int result2[10] = {0, 0, -1, -2, -3, -4, -5, 19};
8 int result3[10] = {0, 0, 0, -1, -2, -3, -4, -5};
9 int result4[10] = {0, 0, 0, 0, -1, -2, -3, -4, -5};
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, -2, -3, -4, -5};
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 + 1] = -1;
27 a[i + 2] = -2;
28 a[i + 3] = -3;
29 a[i + 4] = -4;
30 a[i + 5] = -5;
31 }
32 }
33
check(int * a,int * res,int len)34 void check (int *a, int *res, int len)
35 {
36 int i;
37
38 for (i = 0; i < len; i++)
39 if (a[i] != res[i])
40 abort ();
41 }
42
main(void)43 int main (void)
44 {
45 foo (arr, 0);
46 check (arr, result0, 10);
47
48 foo (arr, 1);
49 check (arr, result1, 10);
50
51 foo (arr, 2);
52 check (arr, result2, 10);
53
54 foo (arr, 3);
55 check (arr, result3, 10);
56
57 foo (arr, 4);
58 check (arr, result4, 10);
59
60 foo (arr, 100);
61 check (arr, result100, 105);
62
63 return 0;
64 }
65 /* { dg-final { scan-tree-dump "Store-stores chain" "pcom"} } */
66