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Subject: Re: Using gcc 4.4.0 to compile Rockbox

Re: Using gcc 4.4.0 to compile Rockbox

From: Nils <>
Date: Tue, 24 Feb 2009 17:36:00 +0100

On Tue, Feb 24, 2009 at 4:49 PM, Mark Allums <> wrote:

> Nils wrote:
>> Also could you run some benchmarks on the codecs to see how it affects
>> performance?
>> Nils
> Attached is a spreadsheet in .ods format. I can supply
> Excel 97, or text, if that would be better.
> I compiled the 4.0.3 elf cross-compiler using my system's default gcc
> 4.3.3. I compiled the 4.4.0 elf cross-compiler with an x86_64 native gcc
> 4.4.0 that I bootstrapped myself from the snapshot.
> It looks like vanilla 4.4.0 comes off worse in the comparison. I can't yet
> bench .mp3s, or .wma's, but I would expect similar results to the ogg
> results. The .m4a's were 256kb/s files, the .oggs were VBR. The .wma's may
> or not be VBR, I can't remember; the .mp3s definitely were.
> This is a beginning. Also, keep in mind that it's early days, yet, for the
> gcc 4.4.0 compiler. It will likely improve over time.
> Mark Allums

thanks! too bad it's looking like it produces consistently slower code.
Received on 2009-02-24

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