Re: xor as a lazy comparison
From: Bill Davidsen
Date: Mon Jul 25 2005 - 15:24:22 EST
Lee Revell wrote:
On Mon, 2005-07-25 at 13:55 -0400, Steven Rostedt wrote:
Doesn't matter. The cycles saved for old compilers is not rational to
have obfuscated code.
Where do we draw the line with this? Is x *= 2 preferable to x <<= 2 as
In addition to the obvious error, let's not use x += x as well. If you
want to multiple by two, do it.
Wasn't there a CPU where multiple was faster than add? Doesn't matter,
let the compiler make the optimizations so you don't have to.
-bill davidsen (davidsen@xxxxxxx)
"The secret to procrastination is to put things off until the
last possible moment - but no longer" -me
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/