1. A method for recovering a lookahead register state in a processor, the method comprising: storing a lookahead register state in a silo, said lookahead register state corresponding to a plurality of logical registers employed by said processor, said lookahead register state corresponding to a state of said plurality of logical registers prior to a line of instruction operations; storing physical register numbers assigned to destination operands within said line of instruction operations in said silo; storing logical register numbers corresponding to said destination operands within said line of instruction operations in said silo; detecting an exception condition upon executing a particular instruction operation within said line of instruction operations; restoring said lookahead register state corresponding to said line of instruction operations from said silo responsive to said detecting; and selectively updating said lookahead register state responsive to said physical register numbers and said logical register numbers stored in said silo.