Viewing file:  predcom-dse-7.c (1.47 KB) -rw-r--r--
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/* { 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"} } */
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