A processor may include {HEAD ~ an execution circuit} configured to execute {TAIL ~ an instruction}, an issue circuit coupled to the execution circuit, and a clock tree for clocking circuitry in the processor 
A processor may include { HEAD ~ an execution circuit } configured to execute { TAIL ~ an instruction } , an issue circuit coupled to the execution circuit , and a clock tree for clocking circuitry in the processor
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH