PATCH: Properly check the end of basic block

[H.J. Lu]

On Thu, Nov 18, 2010 at 11:43 AM, Uros Bizjak <ubizjak@gmail.com> wrote:
> On Thu, Nov 18, 2010 at 8:37 PM, H.J. Lu <hjl.tools@gmail.com> wrote:
>
>>>> ix86_pad_returns forgot to update BB_END when it
>>>> replaces it with a new one. OK for trunk?
>>>
>>> IMO,  you should just move the call to vzeroupper optimization to be
>>> the first thing in ix86_reorg. This way, ix86_pad_short_function,
>>> ix86_pad_returns and ix86_avoid_jump_mispredict will also count
>>> emitted vzeroupper.
>>
>> But it will leave bad BB_END in place.  Any uses of BB_END later
>> will still be screwed.
>
> I think that Jan or Richard (CC'd) can provide better answer on this issue.
>

I opened a bug:

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46546



-- 
H.J.