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| author | Kim Phillips <kim.phillips@freescale.com> | 2013-11-06 05:15:24 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-12-29 12:32:45 +0000 |
| commit | 017f161a55b48807a73fc9dff0b69f081bf43ee3 (patch) | |
| tree | 1c440562e87f4c394d483935486019cc9854ffe8 /arch/arm/mm | |
| parent | 03aa6580e336c19e923372a3b6b72a300f24880c (diff) | |
| download | linux-017f161a55b48807a73fc9dff0b69f081bf43ee3.tar.gz | |
ARM: 7877/1: use built-in byte swap function
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 very modest benefit on vmlinux size (Linaro gcc 4.8): text data bss dec hex filename 2840310 123932 61960 3026202 2e2d1a vmlinux-lart #orig 2840152 123932 61960 3026044 2e2c7c vmlinux-lart #builtin-bswap 6473120 314840 5616016 12403976 bd4508 vmlinux-mxs #orig 6472586 314848 5616016 12403450 bd42fa vmlinux-mxs #builtin-bswap 7419872 318372 379556 8117800 7bde28 vmlinux-imx_v6_v7 #orig 7419170 318364 379556 8117090 7bdb62 vmlinux-imx_v6_v7 #builtin-bswap Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Reviewed-by: Nicolas Pitre <nico@linaro.org> Acked-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm')
0 files changed, 0 insertions, 0 deletions