1. A computer-implemented method for managing transient instruction streams, comprising: inserting a transient hint into an instruction request stream to indicate a transient instruction; processing the instruction request stream to identify the transient instruction; setting a transient instruction bit in a Special Purpose Register (SPR) when the transient instruction is identified; storing the transient instruction in a high-level cache; and processing the transient instruction, wherein the transient instruction is not stored in a lower-level cache.