tune-iwmmx vs tune-xscale

tune-iwmmx vs tune-xscale

[Mike Rapoport]

Hi all,
I'd like to ask if it is better to use "tune-xscale.conf" or "tune-iwmmx.conf"
for PXA270 based machine.

-- 
Sincerely yours,
Mike.

Re: tune-iwmmx vs tune-xscale

[Khem Raj]

tune-iwmmx.conf would be more appropriate

-Khem

On 9/30/07, Mike Rapoport <mike@compulab.co.il> wrote:
> Hi all,
> I'd like to ask if it is better to use "tune-xscale.conf" or "tune-iwmmx.conf"
> for PXA270 based machine.
>
> --
> Sincerely yours,
> Mike.
>
>
> _______________________________________________
> Openembedded-devel mailing list
> Openembedded-devel@lists.openembedded.org
> http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel
>

Re: tune-iwmmx vs tune-xscale

[Koen Kooi]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Khem Raj schreef:
> tune-iwmmx.conf would be more appropriate

Actually, no. There are still problems left with things randomly segfaulting when
compiling everything with iwmmxt, so in OE we only activate iwmmxt for packages that
benefit from and and prove to be stable (e.g. mplayer).

regards,

Koen
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.5 (Darwin)

iD8DBQFHALR/MkyGM64RGpERAo9DAKCVeQPV0lIAgrxgSQj4Kg1vK1WWEgCgiMAV
9qA86YU6hgtwmy99Qs/pw+I=
=tGBi
-----END PGP SIGNATURE-----

Re: tune-iwmmx vs tune-xscale

[Koen Kooi]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Koen Kooi schreef:
> Khem Raj schreef:
>> tune-iwmmx.conf would be more appropriate
> 
> Actually, no. There are still problems left with things randomly segfaulting when
> compiling everything with iwmmxt, so in OE we only activate iwmmxt for packages that
> benefit from and and prove to be stable (e.g. mplayer).

For added whitespace-damaged google-juice:

#build with support for the iwmmxt instruction support (pxa270 and up)
MY_ARCH := "${PACKAGE_ARCH}"
PACKAGE_ARCH = "${@base_contains('MACHINE_FEATURES', 'iwmmxt', 'iwmmxt', '${MY_ARCH}',d)}"

MY_TARGET_CC_ARCH := "${TARGET_CC_ARCH}"
TARGET_CC_ARCH = "${@base_contains('MACHINE_FEATURES', 'iwmmxt', '-march=iwmmxt
- -mtune=iwmmxt', '${MY_TARGET_CC_ARCH}',d)}"
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.5 (Darwin)

iD8DBQFHAgb9MkyGM64RGpERArUnAJ9NgWjgkuebxm99tbeNOPPG97NsKwCgnE25
aRFsayv73s/QenRMOmHs3VQ=
=aXBX
-----END PGP SIGNATURE-----