Checking against Booleans however mostly only takes one cycle hence almost unlimited fast.

i.e.: this takes only 64ms on my machine:

var startTime:int = getTimer();
for ( var i:int = 0 ; i < 10000000 ; i++ ){
if ( true ) continue;
}
trace( getTimer() – startTime + ” ms”);

while this takes 72ms:

var startTime:int = getTimer();
for ( var i:int = 0 ; i -1 ) continue;
}
trace( getTimer() – startTime + ” ms”);

and this one even 392 ms (almost 6x as much):

var startTime:int = getTimer();
for ( var i:int = 0 ; i < 10000000 ; i++ ){
if ( i <= int.MAX_VALUE ) continue;
}
trace( getTimer() – startTime + ” ms”);

Cheers!