The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/jit-test/tests/xdr/lazy.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,136 @@
     1.4 +load(libdir + 'bytecode-cache.js');
     1.5 +var test = "";
     1.6 +var checkAfter;
     1.7 +
     1.8 +// code a function which has both used and unused inner functions.
     1.9 +test = (function () {
    1.10 +  function f(x) {
    1.11 +    function ifTrue() {
    1.12 +      return true;
    1.13 +    };
    1.14 +    function ifFalse() {
    1.15 +      return false;
    1.16 +    };
    1.17 +
    1.18 +    if (x) return ifTrue();
    1.19 +    else return ifFalse();
    1.20 +  }
    1.21 +
    1.22 +  return f.toSource() + "; f(true)";
    1.23 +})();
    1.24 +evalWithCache(test, { assertEqBytecode: true, assertEqResult : true });
    1.25 +
    1.26 +// code a function which uses different inner functions based on the generation.
    1.27 +test = (function () {
    1.28 +  function f(x) {
    1.29 +    function ifTrue() {
    1.30 +      return true;
    1.31 +    };
    1.32 +    function ifFalse() {
    1.33 +      return false;
    1.34 +    };
    1.35 +
    1.36 +    if (x) return ifTrue();
    1.37 +    else return ifFalse();
    1.38 +  }
    1.39 +
    1.40 +  return f.toSource() + "; f((generation % 2) == 0)";
    1.41 +})();
    1.42 +evalWithCache(test, { });
    1.43 +
    1.44 +// Code a function which has an enclosing scope.
    1.45 +test = (function () {
    1.46 +  function f() {
    1.47 +    var upvar = "";
    1.48 +    function g() { upvar += ""; return upvar; }
    1.49 +    return g;
    1.50 +  }
    1.51 +
    1.52 +  return f.toSource() + "; f()();";
    1.53 +})();
    1.54 +evalWithCache(test, { assertEqBytecode: true, assertEqResult : true });
    1.55 +
    1.56 +// Code a lazy function which has an enclosing scope.
    1.57 +test = (function () {
    1.58 +  function f() {
    1.59 +    var upvar = "";
    1.60 +    function g() { upvar += ""; return upvar; }
    1.61 +    return g;
    1.62 +  }
    1.63 +
    1.64 +  return f.toSource() + "; f();";
    1.65 +})();
    1.66 +evalWithCache(test, { assertEqBytecode: true });
    1.67 +
    1.68 +// (basic/bug535930) Code an enclosing scope which is a Call object.
    1.69 +test = (function () {
    1.70 +  return "(" + (function () {
    1.71 +    p = function () {
    1.72 +        Set()
    1.73 +    };
    1.74 +    var Set = function () {};
    1.75 +    for (var x = 0; x < 5; x++) {
    1.76 +      Set = function (z) {
    1.77 +        return function () {
    1.78 +          [z]
    1.79 +        }
    1.80 +      } (x)
    1.81 +    }
    1.82 +  }).toSource() + ")()";
    1.83 +})();
    1.84 +evalWithCache(test, { assertEqBytecode: true });
    1.85 +
    1.86 +// Code an arrow function, and execute it.
    1.87 +test = (function () {
    1.88 +  function f() {
    1.89 +    var g = (a) => a + a;
    1.90 +    return g;
    1.91 +  }
    1.92 +
    1.93 +  return f.toSource() + "; f()(1);";
    1.94 +})();
    1.95 +evalWithCache(test, { assertEqBytecode: true, assertEqResult : true });
    1.96 +
    1.97 +// Code an arrow function, and do not execute it.
    1.98 +test = (function () {
    1.99 +  function f() {
   1.100 +    var g = (a) => a + a;
   1.101 +    return g;
   1.102 +  }
   1.103 +
   1.104 +  return f.toSource() + "; f();";
   1.105 +})();
   1.106 +evalWithCache(test, { assertEqBytecode: true });
   1.107 +
   1.108 +// Ensure that decoded functions can be relazified.
   1.109 +test = "function f() { }; f();"
   1.110 +     + "assertEq(isLazyFunction(f), false);"
   1.111 +     + "var expect = isRelazifiableFunction(f);";
   1.112 +checkAfter = function (ctx) {
   1.113 +  gc(ctx.global.f); // relazify f, if possible.
   1.114 +  evaluate("assertEq(isLazyFunction(f), expect);", ctx);
   1.115 +};
   1.116 +evalWithCache(test, {
   1.117 +  assertEqBytecode: true,  // Check that we re-encode the same thing.
   1.118 +  assertEqResult: true,    // The function should remain relazifiable, if it was
   1.119 +                           // during the first run.
   1.120 +  checkAfter: checkAfter   // Check that relazifying the restored function works
   1.121 +                           // if the original was relazifiable.
   1.122 +});
   1.123 +
   1.124 +// Ensure that decoded functions can be relazified, even if they have free
   1.125 +// variables.
   1.126 +test = "function f() { return isRelazifiableFunction(f) }; var expect = f();"
   1.127 +     + "assertEq(isLazyFunction(f), false);"
   1.128 +     + "expect";
   1.129 +checkAfter = function (ctx) {
   1.130 +  gc(ctx.global.f); // relazify f, if possible.
   1.131 +  evaluate("assertEq(isLazyFunction(f), expect);", ctx);
   1.132 +};
   1.133 +evalWithCache(test, {
   1.134 +  assertEqBytecode: true,  // Check that we re-encode the same thing.
   1.135 +  assertEqResult: true,    // The function should remain relazifiable, if it was
   1.136 +                           // during the first run.
   1.137 +  checkAfter: checkAfter   // Check that relazifying the restored function works
   1.138 +                           // if the original was relazifiable.
   1.139 +});