------- Comment #7 from bonzini at gcc dot gnu dot org 2005-11-09 08:20 -------
Reduced testcase
/* { dg-do run } */
/* { dg-options "-O -fdump-tree-dom3" } */
int Link[] = { -1 };
int W[] = { 2 };
extern void abort (void);
int f (int k, int p)
{
int pdest, j, D1361;
j = 0;
pdest = 0;
for (;;) {
if (pdest > 2)
do
j--, pdest++;
while (j > 2);
if (j == 1)
break;
while (pdest > p)
if (j == p)
pdest++;
do
{
D1361 = W[k];
do
if (D1361 != 0)
pdest = 1, W[k] = D1361 = 0;
while (p < 1);
} while (k > 0);
do
{
p = 0;
k = Link[k];
while (p < j)
if (k != -1)
pdest++, p++;
}
while (k != -1);
j = 1;
}
/* The correct return value should be pdest (1 in the call from main).
DOM3 is mistaken and propagates a 0 here. */
return pdest;
}
int main ()
{
if (!f (0, 2))
abort ();
return 0;
}
/* { dg-final { scan-tree-dump-times "return 0" 1 "dom3" } } */
/* { dg-final { cleanup-tree-dump "dom3" } } */
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24716
