JSTests/controlFlowProfiler/loop-statements.js

   1 var hasBasicBlockExecuted = $vm.hasBasicBlockExecuted;
   2
   3 load("./driver/driver.js");
   4
   5 function forRegular(limit) {
   6     var sum = 0;
   7     for (var i = 0; i < limit; i++) {
   8         sum += i;
   9     }
  10
  11     return sum;
  12 }
  13
  14 function forIn(o) {
  15     var s = "";
  16     var p;
  17     for (p in o) {
  18         s += p;
  19     }
  20 }
  21
  22 function forOf(a) {
  23     var s = "";
  24     var p;
  25     for (p of a) {
  26         s += p;
  27     }
  28 }
  29
  30 function whileLoop(limit) {
  31     var i = 0;
  32     var sum = 0;
  33     while (i < limit) {
  34         sum += i;
  35         i++;
  36     }
  37
  38     return sum;
  39 }
  40
  41 assert(!hasBasicBlockExecuted(forRegular, "var sum"), "should not have executed yet.");
  42
  43 forRegular(0);
  44 assert(hasBasicBlockExecuted(forRegular, "var sum"), "should have executed.");
  45 assert(!hasBasicBlockExecuted(forRegular, "sum += i"), "should not have executed yet.");
  46
  47 forRegular(1);
  48 assert(hasBasicBlockExecuted(forRegular, "sum += i"), "should have executed.");
  49
  50
  51 assert(!hasBasicBlockExecuted(forIn, "var s"), "should not have executed yet.");
  52
  53 forIn({});
  54 assert(hasBasicBlockExecuted(forIn, "var s"), "should have executed.");
  55 assert(!hasBasicBlockExecuted(forIn, "s += p"), "should not have executed yet.");
  56
  57 forIn({foo: "bar"});
  58 assert(hasBasicBlockExecuted(forIn, "s += p"), "should have executed.");
  59
  60
  61 assert(!hasBasicBlockExecuted(forOf, "var s"), "should not have executed yet.");
  62
  63 forOf([]);
  64 assert(hasBasicBlockExecuted(forOf, "var s"), "should have executed.");
  65 assert(!hasBasicBlockExecuted(forOf, "s += p"), "should not have executed yet.");
  66
  67 forOf(["a"]);
  68 assert(hasBasicBlockExecuted(forOf, "s += p"), "should have executed.");
  69
  70
  71 assert(!hasBasicBlockExecuted(whileLoop, "var sum"), "should not have executed yet.");
  72
  73 whileLoop(0);
  74 assert(hasBasicBlockExecuted(whileLoop, "var sum"), "should have executed.");
  75 assert(!hasBasicBlockExecuted(whileLoop, "sum += i"), "should not have executed yet.");
  76
  77 whileLoop(1);
  78 assert(hasBasicBlockExecuted(whileLoop, "sum += i"), "should have executed.");