LocationLists [][]byte
	// Register-resident output parameters for the function. This is filled in at
	// SSA generation time.
	RegOutputParams []*ir.Name
	// Variable declarations that were removed during optimization
	OptDcl []*ir.Name

	// Filled in by the user. Translates Block and Value ID to PC.
	//
	// NOTE: block is only used if value is BlockStart.ID or BlockEnd.ID.
	// Otherwise, it is ignored.
	GetPC func(block, value ID) int64
}