Hi there,
My concern is this.
For example:
TR0 = 0; // reset the timer
while( TR0 == 0 ); // wait for the flag to be set.
i++; // get out of the loop and increment
}
What is SDCC going to do in this case.
Will it say that line corr. to "i++" as unreachable code.
But how does the compiler know that?
Regards,
Vineet.
On 3/22/07, Jean-Paul <[EMAIL PROTECTED]> wrote:
Le Mercredi 21 Mars 2007 16:15, Vineet Golchha a écrit:
> Hello group,
> Have recently started using the SDCC compiler for 8051 controllers.
> I found two warnings coming up when I compile the code.
>
> 1. warning 126 : unreachable code.
> 2. warning 59 : conditional flow changed by optimizer.
>
> Queries:
>
> 1.Can anyone tell me what this means?
1. For example, if you write :
while (1 < 0)
{
try_this_one();
...
}
then you'll never have a chance to try_this_one().
> 2.Also can they be ignored?
It's up to you.
Regards
Jean-Paul
>
>
> Best Regards,
> Vineet.
--
Never jump into a loop!
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