https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88271
--- Comment #10 from Daniel Fruzynski <bugzi...@poradnik-webmastera.com> ---
Here is possible code transformation to equivalent form, where this
optimization can be simply applied. This change also has a bit surprising side
effect, second nested while loop is unrolled.
[code]
void test2()
{
int level = 0;
int val = 1;
while (1)
{
while(1)
{
val = data[level] << 1;
++level;
if (val)
continue;
else
break;
}
while(1)
{
--level;
val = data[level];
if (!val)
continue;
else
break;
}
}
}
[/code]
