Commit 2b41ce5d authored by Vijay Kumar's avatar Vijay Kumar Committed by David S. Miller
Browse files

sparc64: SPARC optimized __fls function 



Defined SPARC optimized __fls using lzcnt opcode.

Signed-off-by: default avatarVijay Kumar <vijay.ac.kumar@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 70cbec0c

arch/sparc/lib/NG4fls.S

+10 −0
Original line number Diff line number Diff line
@@ -18,3 +18,13 @@ ENTRY(NG4fls) 
	retl

	 sub	%g3, %g2, %o0

ENDPROC(NG4fls)



ENTRY(__NG4fls)

	brz,pn	%o0, 1f

	LZCNT_O0_G2	!lzcnt	%o0, %g2

	mov	63, %g3

	sub	%g3, %g2, %o0

1:

	retl

	 nop

ENDPROC(__NG4fls)