MonetDB: Jul2017 - small performance improvement on checks

[Niels Nes]

Changeset: 6fed8de9efb9 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=6fed8de9efb9
Modified Files:
        sql/server/rel_exp.c
Branch: Jul2017
Log Message:

small performance improvement on checks


diffs (21 lines):

diff --git a/sql/server/rel_exp.c b/sql/server/rel_exp.c
--- a/sql/server/rel_exp.c
+++ b/sql/server/rel_exp.c
@@ -1021,7 +1021,7 @@ exp_is_complex_select( sql_exp *e )
                list *l = e->l;
 
                if (r && l)
-                       for (n = l->h; n; n = n->next) 
+                       for (n = l->h; n && !r; n = n->next) 
                                r |= exp_is_complex_select(n->data);
                return r;
        }
@@ -1330,7 +1330,7 @@ exp_is_atom( sql_exp *e )
                list *l = e->l;
 
                if (r && l)
-                       for (n = l->h; n; n = n->next) 
+                       for (n = l->h; n && r; n = n->next) 
                                r &= exp_is_atom(n->data);
                return r;
        }
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