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Re: PATCH: Properly check the end of basic block
On Thu, Nov 18, 2010 at 11:43 AM, Uros Bizjak <email@example.com> wrote:
> On Thu, Nov 18, 2010 at 8:37 PM, H.J. Lu <firstname.lastname@example.org> 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: