// execution to HANDLER. Many platform-related details also :)
EH_RETURN,
- // TargetConstant* - Like Constant*, but the DAG does not do any folding or
- // simplification of the constant.
+ // TargetConstant* - Like Constant*, but the DAG does not do any folding,
+ // simplification, or lowering of the constant. They are used for constants
+ // which are known to fit in the immediate fields of their users, or for
+ // carrying magic numbers which are not values which need to be materialized
+ // in registers.
TargetConstant,
TargetConstantFP,