From: Anton Blanchard <anton@samba.org>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Michael Ellerman <mpe@ellerman.id.au>,
Paul Mackerras <paulus@samba.org>,
acsawdey@linux.vnet.ibm.com
Cc: linuxppc-dev@lists.ozlabs.org
Subject: [PATCH 2/2] powerpc: Align hot loops of some string functions
Date: Thu, 26 May 2016 08:39:55 +1000 [thread overview]
Message-ID: <20160526083955.3f7deda4@kryten> (raw)
In-Reply-To: <20160526083813.0f96a454@kryten>
Align the hot loops in our assembly implementation of strncpy(),
strncmp() and memchr().
Signed-off-by: Anton Blanchard <anton@samba.org>
---
Index: linux.junk/arch/powerpc/lib/string.S
===================================================================
--- linux.junk.orig/arch/powerpc/lib/string.S
+++ linux.junk/arch/powerpc/lib/string.S
@@ -24,6 +24,7 @@ _GLOBAL(strncpy)
mtctr r5
addi r6,r3,-1
addi r4,r4,-1
+ .balign 16
1: lbzu r0,1(r4)
cmpwi 0,r0,0
stbu r0,1(r6)
@@ -42,6 +43,7 @@ _GLOBAL(strncmp)
mtctr r5
addi r5,r3,-1
addi r4,r4,-1
+ .balign 16
1: lbzu r3,1(r5)
cmpwi 1,r3,0
lbzu r0,1(r4)
@@ -73,6 +75,7 @@ _GLOBAL(memchr)
beq- 2f
mtctr r5
addi r3,r3,-1
+ .balign 16
1: lbzu r0,1(r3)
cmpw 0,r0,r4
bdnzf 2,1b
next prev parent reply other threads:[~2016-05-25 22:40 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-25 22:38 [PATCH 1/2] powerpc: Remove assembly versions of strcpy, strcat, strlen and strcmp Anton Blanchard
2016-05-25 22:39 ` Anton Blanchard [this message]
2016-05-26 7:24 ` [PATCH 2/2] powerpc: Align hot loops of some string functions Christophe Leroy
2016-05-26 19:37 ` Segher Boessenkool
2016-05-27 5:45 ` Christophe Leroy
2016-05-27 6:26 ` Segher Boessenkool
2016-06-15 12:39 ` [2/2] " Michael Ellerman
2016-06-15 12:39 ` [1/2] powerpc: Remove assembly versions of strcpy, strcat, strlen and strcmp Michael Ellerman
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