From: Wolfgang Denk <wd@denx.de>
To: Khem Raj <raj.khem@gmail.com>
Cc: Patches and discussions about the oe-core layer
<openembedded-core@lists.openembedded.org>
Subject: Re: [PATCH 1/3] u-boot: Don't make the -Os removal part of global settings.
Date: Sat, 30 Jun 2012 01:34:33 +0200 [thread overview]
Message-ID: <20120629233433.368832026AF@gemini.denx.de> (raw)
In-Reply-To: <CAMKF1sp8=OreFKNds00t-rxoVVgWaraUTRzMNqVZdY13FXu2YA@mail.gmail.com>
Dear Khem Raj,
In message <CAMKF1sp8=OreFKNds00t-rxoVVgWaraUTRzMNqVZdY13FXu2YA@mail.gmail.com> you wrote:
>
> > -O2 causes much bigger memory footprint, so the code does not fit any
> > more in the memory map and/or flash sectors that are reserved for it.
>
> Hmm interesting so we are living on edge here
Well, -O2 can mean some 30% bigger code size than -Os. This hurts for
memory-footprint optimized code like a boot loader. [It also hurts in
terms of exacution speed on most embedded systems...]
> Thanks for the info
You are welcome.
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
The IQ of the group is the lowest IQ of a member of the group divided
by the number of people in the group.
next prev parent reply other threads:[~2012-06-29 23:45 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-29 18:35 [PATCH 0/3] u-boot recipe updates Paul Gortmaker
2012-06-29 18:35 ` [PATCH 1/3] u-boot: Don't make the -Os removal part of global settings Paul Gortmaker
2012-06-29 21:55 ` Khem Raj
2012-06-29 22:01 ` Wolfgang Denk
2012-06-29 22:11 ` Khem Raj
2012-06-29 23:34 ` Wolfgang Denk [this message]
2012-06-30 2:49 ` Khem Raj
2012-07-01 22:03 ` Saul Wold
2012-07-01 23:14 ` Khem Raj
2012-07-02 3:04 ` Paul Gortmaker
2012-07-02 5:44 ` [PATCHv2 0/3] u-boot recipe updates Paul Gortmaker
2012-07-02 5:44 ` [PATCHv2 1/3] u-boot: Don't make the -Os removal part of global settings Paul Gortmaker
2012-07-02 11:23 ` Otavio Salvador
2012-07-02 5:44 ` [PATCHv2 2/3] u-boot: make FILESDIR a shared setting Paul Gortmaker
2012-07-02 11:24 ` Otavio Salvador
2012-07-02 13:33 ` Chris Larson
2012-07-02 16:42 ` Otavio Salvador
2012-07-02 19:03 ` Richard Purdie
2012-07-02 5:44 ` [PATCHv2 3/3] u-boot: do not clobber PARALLEL_MAKE setting Paul Gortmaker
2012-07-02 11:25 ` Otavio Salvador
2012-07-03 17:48 ` [PATCHv2 0/3] u-boot recipe updates Saul Wold
2012-07-04 14:12 ` Paul Gortmaker
2012-07-04 15:00 ` Paul Gortmaker
2012-07-04 15:29 ` Phil Blundell
2012-07-05 16:14 ` Paul Gortmaker
2012-07-09 16:01 ` Phil Blundell
2012-07-09 18:20 ` McClintock Matthew-B29882
2012-07-09 18:52 ` Paul Gortmaker
2012-07-09 19:08 ` Richard Purdie
2012-07-04 15:23 ` [PATCH] u-boot: make FILESDIR a shared setting via FILESPATH Paul Gortmaker
2012-07-04 15:38 ` Martin Jansa
2012-07-04 17:01 ` Richard Purdie
2012-07-05 17:19 ` Saul Wold
2012-06-29 18:35 ` [PATCH 2/3] u-boot: make FILESDIR a shared setting Paul Gortmaker
2012-06-29 18:35 ` [PATCH 3/3] u-boot: make sure CROSS_COMPILE is passed into build Paul Gortmaker
2012-06-29 20:04 ` McClintock Matthew-B29882
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