Use long long builtins of zero counting for x86-64.

2011-06-18  H.J. Lu  <hongjiu.lu@intel.com>

	* longlong.h (count_leading_zeros): Use long long builtin for
	x86-64.
	(count_trailing_zeros): Likewise.

From-SVN: r175183

gcc/ChangeLog

 2011-06-18  H.J. Lu  <hongjiu.lu@intel.com>
 
+	* longlong.h (count_leading_zeros): Use long long builtin for
+	x86-64.
+	(count_trailing_zeros): Likewise.
+
+2011-06-18  H.J. Lu  <hongjiu.lu@intel.com>
+
 	PR other/49325
 	* acinclude.m4 (gcc_AC_INITFINI_ARRAY): Properly check if
 	.init_array can be used with .ctors on targets.

gcc/longlong.h

 /* longlong.h -- definitions for mixed size 32/64 bit arithmetic.
    Copyright (C) 1991, 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
-   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
    Free Software Foundation, Inc.
 
    This file is part of the GNU C Library.
@@ -436,8 +436,8 @@ UDItype __umulsidi3 (USItype, USItype);
 	   : "0" ((UDItype) (n0)),					\
 	     "1" ((UDItype) (n1)),					\
 	     "rm" ((UDItype) (dv)))
-#define count_leading_zeros(count, x)	((count) = __builtin_clzl (x))
-#define count_trailing_zeros(count, x)	((count) = __builtin_ctzl (x))
+#define count_leading_zeros(count, x)	((count) = __builtin_clzll (x))
+#define count_trailing_zeros(count, x)	((count) = __builtin_ctzll (x))
 #define UMUL_TIME 40
 #define UDIV_TIME 40
 #endif /* x86_64 */