Commit 7e86f967 authored by Heiko Carstens's avatar Heiko Carstens Committed by Vasily Gorbik
Browse files

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: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent fcc91d5d

arch/s390/lib/xor.c

+1 −4
Original line number Diff line number Diff line
@@ -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");

}