Hm...
the result will be like (optimization On , when Off, the asm is obvious):
add #llo(1), &count
addc #lhi(1), &count+2
jne .L1
add #llo(1), &bar
addc #lhi(1), &bar+2
.L1:
ret
Is that wrong? ;)
~d
On Tue, 17 Sep 2002 08:51:20 -0500
"Bill Knight" <[email protected]> wrote:
> I'm a little hesitant in posting this... I've been known to
> be wrong on occasion (quite a few, if you ask my wife).
> However, here goes anyway. Given the following code fragment:
>
> unsigned long count = 0;
> unsigned long bar = 0;
>
> void foo(void)
> {
> if (++count == 0)
> bar++;
> }
>
> 'bar' will be increment once for each increment of 'count' for
> as long as the upper byte of 'count' is zero.
>
> I have followed this code at the assembly level using the
> simulator. It doesn't look like the fault is with the simulator.
> The code appears to be checking ONLY if the upper byte of 'count'
> is zero.
>
> -Bill Knight
> R O SoftWare
>
>
>
>
> -------------------------------------------------------
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>
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