Viewing file:  predcom-dse-11.c (1.01 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};
int x[105] = {2, 3, 5, 7, 11};
int result0[10] = {2, 3, 5, 7, 11};
int result1[10] = {0, 0, 0, 0, 0, 0, -1, -2, -2};
extern void abort (void);
int __attribute__((noinline)) foo (int * __restrict__ a, int * __restrict__ b, int len, int flag)
{
int i, sum = 0;
for (i = 0; i < len; i++)
{
a[i] = 0;
b[i + 2] = i;
a[i + 1] = -1;
sum += b[i];
a[i + 3] = -2;
}
return sum;
}
void check (int *a, int *res, int len, int sum, int val)
{
int i;
if (sum != val)
abort ();
for (i = 0; i < len; i++)
if (a[i] != res[i])
abort ();
}
int main (void)
{
int i, sum;
sum = foo (arr, x, 0, 0);
check (arr, result0, 10, sum, 0);
sum = foo (arr, x, 6, 0);
check (arr, result1, 10, sum, 11);
return 0;
}
/* { dg-final { scan-tree-dump "Store-stores chain" "pcom"} } */
/* { dg-final { scan-tree-dump "Store-loads chain" "pcom"} } */
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