Defined SPARC optimized __fls using lzcnt opcode.
Signed-off-by: Vijay Kumar <vijay.ac.ku...@oracle.com>
---
arch/sparc/lib/NG4fls.S | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/arch/sparc/lib/NG4fls.S b/arch/sparc/lib/NG4fls.S
index bc17b65..2d0991e 100644
--- a/arch/sparc/lib/NG4fls.S
+++ b/arch/sparc/lib/NG4fls.S
@@ -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)
--
1.7.1
