| /* { dg-do run } */ |
| /* { dg-options "-O2 -fno-inline -fpredictive-commoning -fdump-tree-pcom-details" } */ |
| |
| int arr[105] = {2, 3, 5, 7, 11, 13, 17, 19}; |
| int result0[10] = {2, 3, 5, 7, 11, 13, 17, 19}; |
| int result1[10] = {0, -1, 5, -3, 11, -5, 17, 19}; |
| int result2[10] = {0, 0, -1, -3, -3, -5, -5, 19}; |
| int result3[10] = {0, 0, 0, -1, -3, -3, -5, -5}; |
| int result4[10] = {0, 0, 0, 0, -1, -3, -3, -5, -5}; |
| int result100[105] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, -3, -3, -5, -5}; |
| |
| extern void abort (void); |
| |
| void __attribute__((noinline)) foo (int *a, int len) |
| { |
| int i; |
| for (i = 0; i < len; i++) |
| { |
| a[i] = 0; |
| a[i + 1] = -1; |
| a[i + 3] = -3; |
| a[i + 5] = -5; |
| } |
| } |
| |
| void check (int *a, int *res, int len) |
| { |
| int i; |
| |
| for (i = 0; i < len; i++) |
| if (a[i] != res[i]) |
| abort (); |
| } |
| |
| int main (void) |
| { |
| foo (arr, 0); |
| check (arr, result0, 10); |
| |
| foo (arr, 1); |
| check (arr, result1, 10); |
| |
| foo (arr, 2); |
| check (arr, result2, 10); |
| |
| foo (arr, 3); |
| check (arr, result3, 10); |
| |
| foo (arr, 4); |
| check (arr, result4, 10); |
| |
| foo (arr, 100); |
| check (arr, result100, 105); |
| |
| return 0; |
| } |
| /* { dg-final { scan-tree-dump "Store-stores chain" "pcom"} } */ |