From 7e86f967f4c98a6ad2a8c33c39f041e2955c05c8 Mon Sep 17 00:00:00 2001
From: Heiko Carstens <hca@linux.ibm.com>
Date: Thu, 17 Jun 2021 20:11:40 +0200
Subject: [PATCH] s390/lib,xor: get rid of register asm
Looking at the generate code this was just a micro-optimization.
However given that as many register asm constructs as possible
will be removed from s390 code, remove this one as well.
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
---
arch/s390/lib/xor.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/arch/s390/lib/xor.c b/arch/s390/lib/xor.c
index 29d9470dbcebf..a963c3d8ad0d9 100644
--- a/arch/s390/lib/xor.c
+++ b/arch/s390/lib/xor.c
@@ -91,9 +91,6 @@ static void xor_xc_4(unsigned long bytes, unsigned long *p1, unsigned long *p2,
static void xor_xc_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,
unsigned long *p3, unsigned long *p4, unsigned long *p5)
{
- /* Get around a gcc oddity */
- register unsigned long *reg7 asm ("7") = p5;
-
asm volatile(
" larl 1,2f\n"
" aghi %0,-1\n"
@@ -122,7 +119,7 @@ static void xor_xc_5(unsigned long bytes, unsigned long *p1, unsigned long *p2,
" xc 0(1,%1),0(%5)\n"
"3:\n"
: "+d" (bytes), "+a" (p1), "+a" (p2), "+a" (p3), "+a" (p4),
- "+a" (reg7)
+ "+a" (p5)
: : "0", "1", "cc", "memory");
}