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From: Philip Balister <philip@balister.org>
To: Peter Seebach <peter.seebach@windriver.com>,
	 openembedded-core@lists.openembedded.org
Subject: Re: [PATCH 0/1] Change default for cortexa* to armv7at-neon.
Date: Fri, 22 Aug 2014 10:44:32 -0600	[thread overview]
Message-ID: <53F77370.2060603@balister.org> (raw)
In-Reply-To: <cover.1408649791.git.peter.seebach@windriver.com>

On 08/21/2014 01:54 PM, Peter Seebach wrote:
> The various cortex chips generally support thumb code, so the armv7at
> tunings are a better default for them than the plain armv7a tunings.
> The armv7at tuning allows generation of both arm and thumb code, while
> armv7a only allows arm code, which is typically significantly bigger.
> (It may be faster in some cases, but the tradeoffs aren't totally
> obvious, because smaller code fits in caches better.) Since they
> all had armv7a-neon as default, change them to armv7at-neon.

Can we also move to hard float abi?

Philip


> 
> The following changes since commit 47d1fc9f5c38f3d092937c47bd4c2f45adaa7fe6:
> 
>   qemu: fix Darwin cross-compilation (2014-08-18 20:43:24 +0100)
> 
> are available in the git repository at:
>   git://git.yoctoproject.org/poky-contrib seebs/armv7at
>   http://git.yoctoproject.org/cgit.cgi/poky-contrib/log/?h=seebs/armv7at
> 
> Peter Seebach (1):
>   tune-cortexa*.inc: use armv7at by default
> 
>  meta/conf/machine/include/tune-cortexa15.inc |    2 +-
>  meta/conf/machine/include/tune-cortexa5.inc  |    2 +-
>  meta/conf/machine/include/tune-cortexa7.inc  |    2 +-
>  meta/conf/machine/include/tune-cortexa8.inc  |    2 +-
>  meta/conf/machine/include/tune-cortexa9.inc  |    2 +-
>  5 files changed, 5 insertions(+), 5 deletions(-)
> 


  parent reply	other threads:[~2014-08-22 16:51 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-21 19:54 [PATCH 0/1] Change default for cortexa* to armv7at-neon Peter Seebach
2014-08-21 19:54 ` [PATCH 1/1] tune-cortexa*.inc: use armv7at by default Peter Seebach
2014-08-25  5:09   ` Khem Raj
2014-08-22 16:44 ` Philip Balister [this message]
2014-08-22 18:33   ` [PATCH 0/1] Change default for cortexa* to armv7at-neon Peter Seebach
2014-08-22 19:39     ` Martin Jansa
2014-08-22 20:49       ` Peter Seebach
2014-08-22 21:46         ` Martin Jansa
2014-08-22 22:06           ` Peter Seebach
2014-08-22 22:26             ` Martin Jansa
2014-08-25 19:12               ` Mark Hatle
2014-08-25 19:35                 ` Khem Raj
2014-08-25 19:40                   ` Mark Hatle
2014-08-25 20:40                   ` Martin Jansa
2014-08-28 12:51                 ` Philip Balister
2014-08-28 13:50                 ` Koen Kooi
2014-08-28 13:57                   ` Mark Hatle
2014-08-28 14:08                     ` Koen Kooi
2014-08-28 14:21                       ` Mark Hatle
2014-08-28 14:24                         ` Mark Hatle
2014-08-29  6:12                     ` Mike Looijmans
2014-08-29 12:16                       ` Koen Kooi
2014-08-29 12:57                       ` Mark Hatle
2014-08-24 23:51       ` Khem Raj
2014-08-24  7:56   ` Mike Looijmans
2014-08-24 14:44     ` Philip Balister
2014-08-24 18:15       ` Koen Kooi
2014-08-23 17:32 ` Koen Kooi

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