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[Bug rtl-optimization/22509] [4.1 regression] elemental.f90 testsuite failure (-fweb)
- From: "rakdver at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 1 Nov 2005 14:08:53 -0000
- Subject: [Bug rtl-optimization/22509] [4.1 regression] elemental.f90 testsuite failure (-fweb)
- References: <bug-22509-10391@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #15 from rakdver at gcc dot gnu dot org 2005-11-01 14:08 -------
C testcase (needs to be compiled with -O1 -funroll-loops and complete unrolling
on trees must be disabled)
int e_fn (int *p, int *q)
{
return *p - *q;
}
int main (void)
{
int a[8];
int b[8];
int A[8];
unsigned i, j;
int C = 1, tmp;
int *p;
for (i = 2; i < 6; i++)
{
a[2 * i - 4] = 2;
a[2 * i - 3] = 2;
}
for (i = 2; i < 6; i++)
{
b[2 * i - 4] = 0;
b[2 * i - 3] = 0;
}
b[1] = e_fn (&a[0], &C);
b[3] = e_fn (&a[2], &C);
b[5] = e_fn (&a[4], &C);
b[7] = e_fn (&a[6], &C);
for (i = 1, j = 6; i < 5; i++, j -= 2)
{
p = A;
tmp = b[2*i-2] + 1;
A[2*i - 2] = e_fn(&a[j], &tmp);
tmp = b[2*i-1] + 1;
A[2*i - 1] = e_fn(&a[j+1], &tmp);
}
for (i = 1; i < 5; i++)
{
a[2*i-2] = p[2*i -2];
a[2*i-1] = p[2*i -1]; for (i = 0; i < 8; i++)
}
printf (" %d",a[i]);
printf ("\n");
return 0;
}
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22509