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/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-vrp1 -fdump-tree-vrp2 -fdump-tree-optimized-alias" } */
void dead (unsigned n);
void alive (unsigned n);
void func (unsigned n, unsigned m)
{
if (n == 0)
__builtin_unreachable();
if (n == 1)
__builtin_unreachable();
if (n & 0x1)
__builtin_unreachable();
if (n == 2)
__builtin_unreachable();
if (n == 3)
__builtin_unreachable();
if (n & 0x2)
__builtin_unreachable();
if (n == 4)
__builtin_unreachable();
if (n == 5)
__builtin_unreachable();
if (n & 0x4)
__builtin_unreachable();
if (n == 6)
__builtin_unreachable();
if (n == 7)
__builtin_unreachable();
if (n <8)
dead (n);
if (n != m)
__builtin_unreachable();
alive (n);
alive (m);
}
/* { dg-final { scan-tree-dump-not "dead" "vrp1" } } */
/* { dg-final { scan-tree-dump-times "builtin_unreachable" 1 "vrp1" } } */
/* { dg-final { scan-tree-dump-not "builtin_unreachable" "vrp2" } } */
/* { dg-final { scan-tree-dump-times "fff8 VALUE 0x0" 2 "optimized" } } */
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