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Re: [PATCH, 4.9/4.10] Profile based option tuning


In the experiment, about 60% (1019/1699) profile data files are empty
(all counters are zero).

2014-07-22 21:39 GMT+08:00 Richard Biener <richard.guenther@gmail.com>:
> On Mon, Jul 21, 2014 at 7:13 AM, Pengfei Yuan <0xcoolypf@gmail.com> wrote:
>> Hi,
>>
>> This patch tunes optimization options based on profile data:
>> * Disable PGO options if profile is not available or empty.
>> * Optimize for size if profile is available but empty.
>
> Err ... these don't seem interesting cases to "optimize" for?
>
> Richard.


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