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s390/lib,xor: get rid of register asm

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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>
This commit is contained in:
Heiko Carstens 2021-06-17 20:11:40 +02:00 committed by Vasily Gorbik
parent fcc91d5d40
commit 7e86f967f4
1 changed files with 1 additions and 4 deletions
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5
arch/s390/lib/xor.c
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@ -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");
}