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RE: [Patch,optimization]: Optimized changes in the estimate register pressure cost.
- From: Ajit Kumar Agarwal <ajit dot kumar dot agarwal at xilinx dot com>
- To: Segher Boessenkool <segher at kernel dot crashing dot org>
- Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>, Vinod Kathail <vinodk at xilinx dot com>, Shail Aditya Gupta <shailadi at xilinx dot com>, Vidhumouli Hunsigida <vidhum at xilinx dot com>, Nagaraju Mekala <nmekala at xilinx dot com>
- Date: Sun, 27 Sep 2015 15:13:59 +0000
- Subject: RE: [Patch,optimization]: Optimized changes in the estimate register pressure cost.
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-----Original Message-----
From: Segher Boessenkool [mailto:segher@kernel.crashing.org]
Sent: Sunday, September 27, 2015 7:49 PM
To: Ajit Kumar Agarwal
Cc: GCC Patches; Vinod Kathail; Shail Aditya Gupta; Vidhumouli Hunsigida; Nagaraju Mekala
Subject: Re: [Patch,optimization]: Optimized changes in the estimate register pressure cost.
On Sat, Sep 26, 2015 at 04:51:20AM +0000, Ajit Kumar Agarwal 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)
>>Did you swap these? You're saying FP got significantly worse?
Sorry for the typo error. Please find the corrected one.
Ratio with the optimization vs ratio without optimization for FP benchmarks ( 4668.743 vs 4668.741). With the optimization
FP is slightly better performance.
Thanks & Regards
Ajit
Segher