powerpc/32: optimise memset()

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There is no need to extend the set value to an int when the length
is lower than 4 as in that case we only do byte stores.
We can therefore immediately branch to the part handling it.
By separating it from the normal case, we are able to eliminate
a few actions on the destination pointer.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Christophe Leroy 2017-08-23 16:54:36 +02:00 • committed by Michael Ellerman

parent c0622167e3

commit 7bf6057b96

1 changed files with 14 additions and 7 deletions

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arch/powerpc/lib/copy_32.S

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