On 02/10/2011 22:41, Walter Bright wrote:
On 10/2/2011 2:18 PM, Stewart Gordon wrote:
Simply because we can't rely on every compiler to perform even the most basic
cases of DCE?
Consider:
if (a) { ... code ... }
Sometimes, when debugging, I'll do:
if (0 && a) { ... code ... }
<snip>
I was talking about cases of DCE that are even more basic than this, such as:
void qwert() {
return;
yuiop();
}
void asdfg() {
if (hjkl) {
return zxcvb;
} else {
return nm;
}
qaz();
}
These are exactly what I mean by no arrow leading to a given statement. In your examples,
OTOH, the arrow exists - it will just never be followed.
Stewart.
