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