https://stackoverflow.com/q/73816657/51685

hyperfine-output.txt

$ hyperfine './so73816657-gcc 1 50000000' './so73816657-gcc 2 50000000' './so73816657-clang 1 50000000' './so73816657-clang 2 50000000'
Benchmark 1: ./so73816657-gcc 1 50000000
  Time (mean ± σ):      1.703 s ±  0.087 s    [User: 1.501 s, System: 0.127 s]
  Range (min … max):    1.586 s …  1.861 s    10 runs

Benchmark 2: ./so73816657-gcc 2 50000000
  Time (mean ± σ):      1.694 s ±  0.096 s    [User: 1.516 s, System: 0.126 s]
  Range (min … max):    1.601 s …  1.882 s    10 runs

Benchmark 3: ./so73816657-clang 1 50000000
  Time (mean ± σ):      1.618 s ±  0.047 s    [User: 1.446 s, System: 0.119 s]
  Range (min … max):    1.573 s …  1.725 s    10 runs

Benchmark 4: ./so73816657-clang 2 50000000
  Time (mean ± σ):      1.688 s ±  0.098 s    [User: 1.512 s, System: 0.123 s]
  Range (min … max):    1.586 s …  1.844 s    10 runs

Summary
  './so73816657-clang 1 50000000' ran
    1.04 ± 0.07 times faster than './so73816657-clang 2 50000000'
    1.05 ± 0.07 times faster than './so73816657-gcc 2 50000000'
    1.05 ± 0.06 times faster than './so73816657-gcc 1 50000000'

so73816657.c

#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main(int argc, char **argv) {
  if (argc != 3) {
    fprintf(stderr, "Usage: %s <option> <number>\n", argv[0]);
    return 1;
  }

  char option = argv[1][0]; // TODO: error check
  int size = atoi(argv[2]); // TODO: error check

  srand(time(NULL));

  int na = INT_MIN;

  int *v_out = (int *)malloc(size * sizeof(int));
  int *v_x = (int *)malloc(size * sizeof(int));

  // Generate random numbers between 1-3
  // 1 -> false
  // 2 -> true
  // 3 -> na
  for (int i = 0; i < size; ++i) {
    int elt_out = rand() % 3 + 1;

    if (elt_out == 1) {
      v_out[i] = 0;
    } else if (elt_out == 2) {
      v_out[i] = 1;
    } else {
      v_out[i] = na;
    }

    int elt_x = rand() % 3 + 1;

    if (elt_x == 1) {
      v_x[i] = 0;
    } else if (elt_x == 2) {
      v_x[i] = 1;
    } else {
      v_x[i] = na;
    }
  }

  if (option == '1') {
    // Option 1
    for (int i = 0; i < size; ++i) {
      int elt_out = v_out[i];
      int elt_x = v_x[i];

      if (elt_out == 0) {
        // Done
      } else if (elt_x == 0) {
        v_out[i] = 0;
      } else if (elt_out == na) {
        // Done
      } else if (elt_x == na) {
        v_out[i] = na;
      }
    }
  }
  if (option == '2') {

    // Option 2
    for (int i = 0; i < size; ++i) {
      int elt_out = v_out[i];

      if (elt_out == 0) {
        continue;
      }

      int elt_x = v_x[i];

      if (elt_x == 0) {
        v_out[i] = 0;
      } else if (elt_out == na) {
        // Done
      } else if (elt_x == na) {
        v_out[i] = na;
      }
    }
  }

  free(v_out);
  free(v_x);

  return 0;
}