llvm/utils/benchmark/src/benchmark_register.h

   1 #ifndef BENCHMARK_REGISTER_H
   2 #define BENCHMARK_REGISTER_H
   3
   4 #include <limits>
   5 #include <vector>
   6
   7 #include "check.h"
   8
   9 template <typename T>
  10 void AddRange(std::vector<T>* dst, T lo, T hi, int mult) {
  11   CHECK_GE(lo, 0);
  12   CHECK_GE(hi, lo);
  13   CHECK_GE(mult, 2);
  14
  15   // Add "lo"
  16   dst->push_back(lo);
  17
  18   static const T kmax = std::numeric_limits<T>::max();
  19
  20   // Now space out the benchmarks in multiples of "mult"
  21   for (T i = 1; i < kmax / mult; i *= mult) {
  22     if (i >= hi) break;
  23     if (i > lo) {
  24       dst->push_back(i);
  25     }
  26   }
  27
  28   // Add "hi" (if different from "lo")
  29   if (hi != lo) {
  30     dst->push_back(hi);
  31   }
  32 }
  33
  34 #endif  // BENCHMARK_REGISTER_H