Benchmarks for glox (tree-walk interpreter) and clox (bytecode interpreter)

bench.lox

class Zoo {
  init() {
    this.aardvark = 1;
    this.baboon   = 1;
    this.cat      = 1;
    this.donkey   = 1;
    this.elephant = 1;
    this.fox      = 1;
  }
  ant()    { return this.aardvark; }
  banana() { return this.baboon; }
  tuna()   { return this.cat; }
  hay()    { return this.donkey; }
  grass()  { return this.elephant; }
  mouse()  { return this.fox; }
}

var zoo = Zoo();
var sum = 0;
while (sum < 100000000) {
  sum = sum + zoo.ant()
            + zoo.banana()
            + zoo.tuna()
            + zoo.hay()
            + zoo.grass()
            + zoo.mouse();
}

print sum;

results

Benchmark 1: clox bench.lox
  Time (mean ± σ):     203.4 ms ±   4.8 ms    [User: 200.3 ms, System: 1.5 ms]
  Range (min … max):   197.7 ms … 212.6 ms    14 runs
 
Benchmark 2: glox -filePath bench.lox
  Time (mean ± σ):      8.867 s ±  0.730 s    [User: 8.930 s, System: 0.282 s]
  Range (min … max):    7.774 s …  9.561 s    10 runs
 
Summary
  'clox bench.lox' ran
   43.59 ± 3.73 times faster than 'glox -filePath bench.lox'