Something like tracing JIT within limited window of instructions could be the solution. Agreed that dynamism must be part of the solution for real data. Whether

Something like tracing JIT within limited window of instructions could be the solution. Agreed that dynamism must be part of the solution for real data. Whether it's done on JIT or HW, there needs to be some feedback mechanism, ie. Perf Monitoring Unit on Intel X86. Agreed.