Commit 12ab11a2 authored Aug 04, 2016 by Anton Blanchard Committed by Michael Ellerman Oct 04, 2016

powerpc/64: Align hot loops of memset() and backwards_memcpy()



Align the hot loops in our assembly implementation of memset()
and backwards_memcpy().

backwards_memcpy() is called from tcp_v4_rcv(), so we might
want to optimise this a little more.

Signed-off-by: Anton Blanchard <anton@samba.org>
Reviewed-by: Nick Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

parent e0319829

arch/powerpc/lib/mem_64.S

+2 −0

Original line number	Diff line number	Diff line
		@@ -37,6 +37,7 @@ _GLOBAL(memset)
		clrldi r5,r5,58
		mtctr r0
		beq 5f
		.balign 16
		4: std r4,0(r6)
		std r4,8(r6)
		std r4,16(r6)
		@@ -90,6 +91,7 @@ _GLOBAL(backwards_memcpy)
		andi. r0,r6,3
		mtctr r7
		bne 5f
		.balign 16
		1: lwz r7,-4(r4)
		lwzu r8,-8(r4)
		stw r7,-4(r6)