Minor optimization of popcount in l10nflist

ChangeLog

@@ -1,5 +1,8 @@
 2011-08-11  Ulrich Drepper  <drepper@gmail.com>
 
+	* intl/l10nflist.c: Allow architecture-specific pop function.
+	* sysdeps/x86_64/l10nflist.c: New file.
+
 	* intl/l10nflist.c (_nl_make_l10nflist): Use locale-independent
 	classification.
 

intl/l10nflist.c

@@ -150,6 +150,7 @@ argz_next__ (argz, argz_len, entry)
 
 
 /* Return number of bits set in X.  */
+#ifndef ARCH_POP
 static int pop PARAMS ((int x));
 
 static inline int
@@ -164,6 +165,7 @@ pop (x)
 
   return x;
 }
+#endif
 
 
 struct loaded_l10nfile *

sysdeps/x86_64/l10nflist.c

@@ -0,0 +1,13 @@
+#ifdef __POPCNT__
+# include <popcntintrin.h>
+
+static inline unsigned int
+pop (unsigned int x)
+{
+  return _mm_popcnt_u32 (x);
+}
+# define ARCH_POP 1
+
+#endif
+
+#include <intl/l10nflist.c>