Marcin Dalecki <[EMAIL PROTECTED]> said: > On 2005-03-27, at 00:21, linux-os wrote: > > Always, always, a call will be more expensive than a branch > > on condition.
Wrong. > > It's impossible to be otherwise. Many, many counterexamples say otherwise... > > A call requires > > that the return address be written to memory (the stack), Not necesarily right now, it can be done at leisure later on while doing other stuff. > > using register indirection (the stack-pointer). So what? The stack pointer is surely special. Modern programming languages (and programming styles) encourage many calls, so this is very heavily optimized. > Needless to say that there are enough architectures out there, which > don't even have something like an explicit call as separate assembler > instruction... The mechanism exists somehow. -- Dr. Horst H. von Brand User #22616 counter.li.org Departamento de Informatica Fono: +56 32 654431 Universidad Tecnica Federico Santa Maria +56 32 654239 Casilla 110-V, Valparaiso, Chile Fax: +56 32 797513 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/