[Patch,optimization]: Optimized changes in the estimate register pressure cost.

Bernhard Reutner-Fischer rep.dot.nop@gmail.com
Mon Sep 28 01:30:00 GMT 2015


On September 26, 2015 9:10:13 AM GMT+02:00, "Bin.Cheng" <amker.cheng@gmail.com> wrote:
>On Sat, Sep 26, 2015 at 12:51 PM, Ajit Kumar Agarwal
><ajit.kumar.agarwal@xilinx.com> wrote:

>> SPEC CPU 2000 benchmarks are run and there is following impact on the
>performance
>> and code size.
>>
>> ratio with the optimization vs ratio without optimization for INT
>benchmarks
>> (3807.632 vs 3804.661)
>>
>> ratio with the optimization vs ratio without optimization for FP
>benchmarks
>> ( 4668.743 vs 4778.741)

Do I read this correctly to introduce a 2,4% regression for FP?

Thanks,
>>
>> Code size reduction with respect to FP SPEC CPU 2000 benchmarks
>>
>> Number of instruction with optimization = 1094117
>> Number of instruction without optimization = 1094659
>>
>> Reduction in number of instruction with the optimization = 542
>instruction.




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