Which is better?

[M. J. Shannon, Jr.]

The question asked was, `Which generates better code?':
	if (exp)
	{
		stuff;
		goto, continue, break, or return;
	}
	any of the other 3;
or:
	if (exp)
	{
		stuff;
		goto, etc.
	}
	else
	{
		any of the other 3;
	}
The answer should be that it makes no difference, and for the compilers
I have access to, it doesn't if you use the -O flag.  If you don't use
an optimizer, then the 2nd case above might generate a branch to a
branch to implement `one of the other 3'.  However, if the compiler is
sufficiently `smart', then it will recognize that the `else' is
superfluous, and nicely fail to generate the branch to branch.

Thus, the answer is that the first form above will generate no worse
code than the 2nd, but any `reasonable' compiler will generate the same
code for both.
-- 
	Marty Shannon
UUCP:	{alice,research}!mjs
	(rabbit is dead; long live alice!)
Phone:	201-582-3199