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Rockbox mail archiveSubject: Re: Proposal to update GCC for ARMRe: Proposal to update GCC for ARM
From: Thomas Martitz <thomas.martitz_at_student.htw-berlin.de>
Date: Tue, 09 Mar 2010 03:35:27 +0100 Am 09.03.2010 02:39, schrieb Nils: > On Tue, Mar 9, 2010 at 2:13 AM, Thomas Martitz > <thomas.martitz_at_student.htw-berlin.de> wrote: > >> Am 09.03.2010 01:50, schrieb Nils: >> >>> The flac codec is built with the core optimization level (-O1 on arm). >>> Earlier testing done on the gigabeast with gcc 4.4.2 >>> showed that compiling the flac codec with -O2 with 4.4.2 >>> was the fastest combination of compiler and optimization level. >>> Indeed. I tested that quickly (e200v1): flac_5.flac: (-O -> -O2) gcc 4.0.3 645% -> 663% realtime gcc 4.4.3 593% -> 704% realtime flac_8.flac: gcc 4.0.3 603% -> 625% realtime gcc 4.4.3 562% -> 661% realtime It looks like we should enable -O2 no matter of the compiler. And it looks like the only real drawback of gcc 4.4.3 disappears with that (it even turns into an advantage). Best regards. Received on 2010-03-09 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |