[PATCH] ftw.c: Use unlikely for unlikely taken branches such that taken ones are placed closer

[James Tirta Halim <tirtajames45@gmail.com>]

---
 io/ftw.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/io/ftw.c b/io/ftw.c
index a72c7d5171..94fb2842d2 100644
--- a/io/ftw.c
+++ b/io/ftw.c
@@ -209,7 +209,7 @@ ftw_allocate (struct ftw_data *data, size_t newsize)
   void *newp = realloc (data->dirstreams, data->maxdir
 					  * sizeof (struct dir_data *)
 					  + newsize);
-  if (newp == NULL)
+  if (__glibc_unlikely(newp == NULL))
     return false;
   data->dirstreams = newp;
   data->dirbufsize = newsize;
@@ -255,7 +255,7 @@ static int
 add_object (struct ftw_data *data, struct STRUCT_STAT *st)
 {
   struct known_object *newp = malloc (sizeof (struct known_object));
-  if (newp == NULL)
+  if (__glibc_unlikely(newp == NULL))
     return -1;
   newp->dev = st->st_dev;
   newp->ino = st->st_ino;
@@ -287,7 +287,7 @@ open_dir_stream (int *dfdp, struct ftw_data *data, struct dir_data *dirp)
       size_t bufsize = 1024;
       char *buf = malloc (bufsize);
 
-      if (buf == NULL)
+      if (__glibc_unlikely(buf == NULL))
 	result = -1;
       else
 	{
@@ -298,12 +298,12 @@ open_dir_stream (int *dfdp, struct ftw_data *data, struct dir_data *dirp)
 	  while ((d = __readdir64 (st)) != NULL)
 	    {
 	      size_t this_len = NAMLEN (d);
-	      if (actsize + this_len + 2 >= bufsize)
+	      if (glibc_unlikely(actsize + this_len + 2 >= bufsize))
 		{
 		  char *newp;
 		  bufsize += MAX (1024, 2 * this_len);
 		  newp = (char *) realloc (buf, bufsize);
-		  if (newp == NULL)
+		  if (__glibc_unlikely(newp == NULL))
 		    {
 		      /* No more memory.  */
 		      int save_err = errno;
@@ -325,7 +325,7 @@ open_dir_stream (int *dfdp, struct ftw_data *data, struct dir_data *dirp)
 	  /* Shrink the buffer to what we actually need.  */
 	  void *content = realloc (buf, actsize);
 	  data->dirstreams[data->actdir]->content = content;
-	  if (content == NULL)
+	  if (__glibc_unlikely(content == NULL))
 	    {
 	      int save_err = errno;
 	      free (buf);
-- 
2.42.0