* Computes type information for each node. Stores the information in the
* field defined in irtypeinfo.h. Sets typestate in irg to irg_typeinfo_consistent.
*
- * Derives the information from nodes/pattarns that give hints about the
+ * Derives the information from nodes/patterns that give hints about the
* type, as projecting an argument from the Start node. Deletes all previous
* type information.
*