Add likely/unlikely to speed up execution

Added to:
- if (error)
- Lex
- sql_yacc.yy and sql_yacc_ora.yy
- In header files to alloc() calls
- Added thd argument to thd_net_is_killed()

1 files changed, 2 insertions, 2 deletions

diff --git a/sql/mf_iocache.cc b/sql/mf_iocache.cc
index d1f56244cb6..495d78804b0 100644
--- a/sql/mf_iocache.cc
+++ b/sql/mf_iocache.cc
@@ -58,12 +58,12 @@ int _my_b_net_read(IO_CACHE *info, uchar *Buffer, size_t)
   if (!info->end_of_file)
     DBUG_RETURN(1);	/* because my_b_get (no _) takes 1 byte at a time */
   read_length= my_net_read_packet(net, 0);
-  if (read_length == packet_error)
+  if (unlikely(read_length == packet_error))
   {
     info->error= -1;
     DBUG_RETURN(1);
   }
-  if (read_length == 0)
+  if (unlikely(read_length == 0))
   {
     info->end_of_file= 0;			/* End of file from client */
     DBUG_RETURN(1);