This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: LIM/Alias Analysis performance issue


On Fri, Apr 16, 2010 at 11:18 PM, Andrew Pinski <pinskia@gmail.com> wrote:
> On Fri, Apr 16, 2010 at 10:40 AM, Lu, John <john.lu@verisilicon.com> wrote:
>> Hi,
>>
>> I've encountered a performance issue in a port of GCC I'm working on,
>> where the behavior of LIM is affected by the ordering of fields in a
>> structure. ?I've been able to re-create it with a GCC 4.3.1
>> Linux X86 compiler. ?With GCC 4.3.1 Linux X86, when I compile:
>
> I just tried the trunk with your two sample testcases and in both
> cases T.p is pulled out of the loop.

With GCC 4.4 as well.

Richard.

> Thanks,
> Andrew Pinski
>


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]