Commit 4f38c7ae authored by Heiko Carstens's avatar Heiko Carstens Committed by Vasily Gorbik
Browse files

s390/bitops: use register pair instead of register asm 



Get rid of register asm statement and use a register pair.
This allows the compiler to allocate registers on its own.

Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent c4655a20

arch/s390/include/asm/bitops.h

+5 −5
Original line number Diff line number Diff line
@@ -299,13 +299,13 @@ static inline unsigned char __flogr(unsigned long word) 
		}

		return bit;

	} else {

		register unsigned long bit asm("4") = word;

		register unsigned long out asm("5");

		union register_pair rp;



		rp.even = word;

		asm volatile(

			"       flogr   %[bit],%[bit]\n"

			: [bit] "+d" (bit), [out] "=d" (out) : : "cc");

		return bit;

			"       flogr   %[rp],%[rp]\n"

			: [rp] "+d" (rp.pair) : : "cc");

		return rp.even;

	}

}