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SubjectRe: [PATCH v6] arm: use built-in byte swap function
Date
On Fri, 2013-02-22 at 19:40 -0600, Kim Phillips wrote:
> Enable the compiler intrinsic for byte swapping on arch ARM. This
> allows the compiler to detect and be able to optimize out byte
> swappings, and has a tiny benefit on vmlinux size (Linaro gcc 4.7.3):
>
> text data bss dec hex filename
> 2754100 121144 56520 2931764 2cbc34 vmlinux-lart #orig
> 2754050 121144 56520 2931714 2cbc02 vmlinux-lart #builtin-bswap
> 6282699 307852 5578076 12168627 b9adb3 vmlinux-mxs #orig
> 6282241 307832 5578076 12168149 b9abd5 vmlinux-mxs #builtin-bswap
> 7200193 364180 361748 7926121 78f169 vmlinux-imx_v6_v7 #orig
> 7199515 364188 361748 7925451 78eecb vmlinux-imx_v6_v7 #builtin-bswap
>
> Signed-off-by: Kim Phillips <kim.phillips@freescale.com>

Looks good, thanks.

Acked-by: David Woodhouse <David.Woodhouse@intel.com>


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David Woodhouse Open Source Technology Centre
David.Woodhouse@intel.com Intel Corporation



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