tor-browser

The Tor Browser
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incremental-encoder.js (1412B)

      1 // |jit-test| skip-if: isLcovEnabled()
      2 
      3 load(libdir + 'bytecode-cache.js');
      4 var test = "";
      5 
      6 // Check that without cloneSingleton, we can safely encode object literal which
      7 // have mutations.
      8 test = `
      9  var obj = { a: 1, b: 2 };
     10  obj.a++;
     11  assertEq(obj.a, 2);
     12 `;
     13 evalWithCache(test, {
     14  collectDelazifications: true,
     15  assertEqResult : true
     16 });
     17 
     18 
     19 // Encode lazy functions.
     20 test = `
     21  function f() { return 1; };
     22  1;
     23 `;
     24 evalWithCache(test, {
     25  collectDelazifications: true,
     26  assertEqResult : true
     27 });
     28 
     29 
     30 // Encode delazified functions.
     31 test = `
     32  function f() { return 1; };
     33  f();
     34 `;
     35 evalWithCache(test, {
     36  collectDelazifications: true,
     37  assertEqResult : true
     38 });
     39 
     40 // Encode inner functions.
     41 test = `
     42  function g() {
     43    return function f() { return 1; };
     44  };
     45  g()();
     46 `;
     47 evalWithCache(test, {
     48  collectDelazifications: true,
     49  assertEqResult : true
     50 });
     51 
     52 // Extra zeal GCs can cause isRelazifiableFunction() to become true after we
     53 // record its value by throwing away JIT code for the function.
     54 gczeal(0);
     55 
     56 // Relazified functions are encoded as non-lazy-script, when the encoding is
     57 // incremental.
     58 test = `
     59  assertEq(isLazyFunction(f), generation == 0 || generation == 3);
     60  function f() { return isRelazifiableFunction(f); };
     61  expect = f();
     62  assertEq(isLazyFunction(f), false);
     63  relazifyFunctions(f);
     64  assertEq(isLazyFunction(f), expect);
     65 `;
     66 evalWithCache(test, { collectDelazifications: true });