IR - Instruction Retired.
We measure them using callgrind to analyze micro-improvements.
See https://wiki.php.net/phpng#performance_evaluation
for more details.
Thanks. Dmitry.
On Wed, Jan 14, 2015 at 5:56 PM, Alexander Kurilo <[email protected]> wrote:
> Hi Xinchen,
>
>> my draft patch (which already get 0.1% IRs reduce in wordpress)
>>
>
> could you or anyone else help me understand what IR stands for?
>
> Thanks in advance.
>
>
>
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