Re: [PATCH] TRACING: Fix a copmile warning

[Arnaud Lacombe]

Hi,

On Mon, Jul 25, 2011 at 9:12 PM, Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
> On Mon, 2011-07-25 at 21:08 -0400, Arnaud Lacombe wrote:
>> Hi,
>>
>
>> but the code generated seem to test %esi (`b', potentially
>> uninitialized) before %ebx (`a'). Am I still missing something ?
>
> But it tests 'a' again afterward. If 'a' is 0, it doesn't matter what
> 'b' was. So the uninitialized test is a wash. No harm done, except for
> some wasted CPU cycles.
>
I see, even if `b' is junk, the final logic does not change.

 - Arnaud
--
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/