[Buildroot] [PATCH 02/11] arch: MIPS: Add config option BR2_GCC_TARGET_TUNE
Yann E. MORIN
yann.morin.1998 at free.fr
Thu Apr 3 21:19:25 UTC 2014
Paul, All,
On 2014-04-03 23:01 +0200, Paul Cercueil spake thusly:
> This option is actually already used in GCC's package.
>
> This allows to optimize the toolchain for a specific MIPS processor
> while supporting more than one family of processors.
Is that really needed? man gcc says:
When this option is not used, GCC optimizes for the processor
specified by -march.
Since this patch would pass the same value to --with-arch and
--with-tune, and since this is the default of gcc, is it really
needed?
Neither ACKing nor NAKing this patch. Can you explain a bit more why we
would want that, given the above explanations?
Regards,
Yann E. MORIN.
> Signed-Off-By: Paul Cercueil <paul at crapouillou.net>
> ---
> arch/Config.in.mips | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/arch/Config.in.mips b/arch/Config.in.mips
> index 20951e0..e4160a2 100644
> --- a/arch/Config.in.mips
> +++ b/arch/Config.in.mips
> @@ -83,6 +83,16 @@ config BR2_GCC_TARGET_ARCH
> default "mips64" if BR2_mips_64
> default "mips64r2" if BR2_mips_64r2
>
> +config BR2_GCC_TARGET_TUNE
> + default "mips1" if BR2_mips_1
> + default "mips2" if BR2_mips_2
> + default "mips3" if BR2_mips_3
> + default "mips4" if BR2_mips_4
> + default "mips32" if BR2_mips_32
> + default "mips32r2" if BR2_mips_32r2
> + default "mips64" if BR2_mips_64
> + default "mips64r2" if BR2_mips_64r2
> +
> config BR2_MIPS_OABI32
> bool
> default y if BR2_mips || BR2_mipsel
> --
> 1.9.0
>
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