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, 1 deletions

diff --git a/sql/strfunc.cc b/sql/strfunc.cc
index f701c4a09ed..f457f6b29be 100644
--- a/sql/strfunc.cc
+++ b/sql/strfunc.cc
@@ -79,8 +79,9 @@ ulonglong find_set(TYPELIB *lib, const char *str, size_t length, CHARSET_INFO *c
       var_len= (uint) (pos - start);
       uint find= cs ? find_type2(lib, start, var_len, cs) :
                       find_type(lib, start, var_len, (bool) 0);
-      if (!find && *err_len == 0) // report the first error with length > 0
+      if (unlikely(!find && *err_len == 0))
       {
+        // report the first error with length > 0
         *err_pos= (char*) start;
         *err_len= var_len;
         *set_warning= 1;