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    • emarsden's avatar
      Add support for hardware cycle counters for Pentium and UltraSPARC. This · fe40afd6
      emarsden authored
      uses the CPUID + RDTSC instructions on Pentium, and reads the %TICK register
      on UltraSPARC. Accessible via the VM::READ-CYCLE-COUNTER VOP that returns
      two (unsigned-byte 32) values, that are the lower and upper components of a
      64-bit cycle count (actually 63 bits for UltraSPARC). Basic support for
      counting the number of CPU cycles has been added to the TIME macro.
      fe40afd6
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