WIP: Improve getBaseTypeAndTypemod() performance for builtin types.

Author: Robert Haas
Discussion: https://postgr.es/m/

diff --git a/src/backend/utils/cache/lsyscache.c b/src/backend/utils/cache/lsyscache.c
index b7a14dc87e14801029c82e690087c43f4843c481..2a22da148990811ed5a143c722dce32ded887959 100644 (file)
--- a/src/backend/utils/cache/lsyscache.c
+++ b/src/backend/utils/cache/lsyscache.c
@@ -2295,6 +2295,9 @@ getBaseTypeAndTypmod(Oid typid, int32 *typmod)
        HeapTuple   tup;
        Form_pg_type typTup;
 
+       if (typid < FirstBootstrapObjectId)
+           break;
+
        tup = SearchSysCache1(TYPEOID, ObjectIdGetDatum(typid));
        if (!HeapTupleIsValid(tup))
            elog(ERROR, "cache lookup failed for type %u", typid);