Viewing file:  force-parallel-6.c (1.31 KB) -rw-r--r--
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void abort (void);
#define N 500
#define M 50
int X[2*N], Y[2*N], B[2*N];
int A[2*N][2*N], C[2*N][2*N];
static void __attribute__((noinline,noclone))
init (void)
{
volatile int i, j;
for (i = 0; i < 2 * N; ++i)
{
B[i] = 1;
X[i] = 1;
Y[i] = 1;
for (j = 0; j < 2 * N; ++j)
{
A[i][j] = 1;
C[i][j] = 1;
}
}
}
static void __attribute__((noinline,noclone))
foo (void)
{
int i, j, k;
for (i = 0; i < M; i++)
{
X[i] = Y[i] + 10;
for (j = 0; j < M; j++)
{
B[j] = A[j][N];
for (k = 0; k < N; k++)
{
A[j+1][k] = B[j] + C[j][k];
}
Y[i+j] = A[j+1][N];
}
}
}
static void __attribute__((noinline,noclone))
check (void)
{
volatile int i, j;
for (i = 0; i < 2 * N; ++i)
{
int expect_x = i < M ? 11 : 1;
if (B[i] != 1
|| X[i] != expect_x
|| Y[i] != 1)
abort ();
for (j = 0; j < 2 * N; ++j)
{
int expect_a = (0 < i && i <= M && j < N) ? 2 : 1;
if (A[i][j] != expect_a
|| C[i][j] != 1)
abort ();
}
}
}
int main(void)
{
init ();
foo ();
check ();
return 0;
}
/* Check that parallel code generation part make the right answer. */
/* { dg-final { scan-tree-dump-times "1 loops carried no dependency" 1 "graphite" } } */
/* { dg-final { scan-tree-dump-times "loopfn.0" 4 "optimized" } } */
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