[PATCH] powerpc: Align hot loops of memset() and backwards_memcpy()
Anton Blanchard
anton at ozlabs.org
Thu Aug 4 16:53:22 AEST 2016
From: Anton Blanchard <anton at samba.org>
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 at samba.org>
---
arch/powerpc/lib/mem_64.S | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/lib/mem_64.S b/arch/powerpc/lib/mem_64.S
index 43435c6..eda7a96 100644
--- a/arch/powerpc/lib/mem_64.S
+++ b/arch/powerpc/lib/mem_64.S
@@ -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)
--
2.7.4
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