On Thu, Jul 26, 2012 at 11:58 PM, Richard Henderson <r...@redhat.com> wrote:
> On 07/26/2012 02:41 PM, Richard Henderson wrote:
>> This is a patch...
>
> ... that I should have attached. Bah.
Do we need to mark the labels so we preserve them? Consider
goto foo;
foo:
bar __attribute__((cold)):
...
so bar will be unused? What about BB merging if we end up with
<BB 3>:
..
fallthru
bar __attribute__((cold)):
...
should BB 3 inherit the coldness? I think we no longer disable
BB merging if the destination has user labels.
Richard.
