From: "Vladimir 'φ-coder/phcoder' Serbinenko" <phcoder@gmail.com>
To: The development of GNU GRUB <grub-devel@gnu.org>
Subject: Re: Image scaling performance
Date: Wed, 25 Feb 2015 21:48:27 +0100 [thread overview]
Message-ID: <54EE351B.6050605@gmail.com> (raw)
In-Reply-To: <CAN9vWDJxY5qgvBrtHXkT5jdYNGO9nsjp7Ud2axku=1yndWUOpA@mail.gmail.com>
On 25.02.2015 19:46, Michael Zimmermann wrote:
> oh ok so linux's div/mod/... assembler is as slow/fast as grub's code?
> Linux uses armv5>= ifdefs. Maybe we could optimized things a little :)
maintaining optimised asm routines is a lot of burden. You'll get more
bugs than speedup. It's possible to use sdiv/udiv after checking CPU
model properly but it doesn't cover 64-bit division and usable only on
few cpus anyway.
next prev parent reply other threads:[~2015-02-25 20:48 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-24 9:39 Image scaling performance Michael Zimmermann
2015-02-24 9:51 ` Vladimir 'phcoder' Serbinenko
2015-02-24 10:00 ` Michael Zimmermann
2015-02-24 11:27 ` Vladimir 'phcoder' Serbinenko
2015-02-24 11:47 ` Michael Zimmermann
2015-02-24 12:39 ` Vladimir 'phcoder' Serbinenko
2015-02-24 18:01 ` Michael Zimmermann
2015-02-24 18:22 ` Andrei Borzenkov
2015-02-25 16:20 ` Leif Lindholm
2015-02-25 15:45 ` Leif Lindholm
2015-02-25 16:23 ` Leif Lindholm
2015-02-25 18:38 ` Michael Zimmermann
2015-02-25 18:41 ` Vladimir 'phcoder' Serbinenko
2015-02-25 18:46 ` Michael Zimmermann
2015-02-25 18:56 ` Vladimir 'φ-coder/phcoder' Serbinenko
2015-02-25 19:28 ` Michael Zimmermann
2015-02-25 20:39 ` Vladimir 'φ-coder/phcoder' Serbinenko
2015-02-25 20:48 ` Vladimir 'φ-coder/phcoder' Serbinenko [this message]
2015-02-25 20:54 ` Michael Zimmermann
2015-02-26 16:44 ` Vladimir 'φ-coder/phcoder' Serbinenko
2015-02-26 17:10 ` Michael Zimmermann
2015-02-26 17:16 ` Vladimir 'φ-coder/phcoder' Serbinenko
2015-02-26 20:27 ` Michael Zimmermann
2015-02-26 20:35 ` Vladimir 'φ-coder/phcoder' Serbinenko
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