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/* { dg-do compile } */
/* { dg-options "-O2 -ftree-parallelize-loops=4 -fdump-tree-parloops2-details -fdump-tree-optimized" } */
void abort (void);
unsigned int x[500][500];
unsigned int y[500];
unsigned int g_sum=0;
void __attribute__((noinline))
init (int i, int j)
{
x[i][j]=1;
}
void __attribute__((noinline))
parloop (int N)
{
int i, j;
unsigned int sum;
/* Outer loop reduction, outerloop is parallelized. */
sum=0;
for (i = 0; i < N; i++)
{
for (j = 0; j < N; j++)
y[i] += x[i][j];
sum += y[i];
}
g_sum = sum;
}
int
main (void)
{
int i, j;
for (i = 0; i < 500; i++)
for (j = 0; j < 500; j++)
init (i, j);
parloop (500);
return 0;
}
/* Check that outer loop is parallelized. */
/* { dg-final { scan-tree-dump-times "parallelizing outer loop" 1 "parloops2" } } */
/* { dg-final { scan-tree-dump-times "parallelizing inner loop" 0 "parloops2" } } */
/* { dg-final { scan-tree-dump-times "loopfn" 4 "optimized" } } */
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