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