The Tor Browser / file revision

 load(libdir + "asm.js");

 if (!isAsmJSCompilationAvailable())

     quit();

 var module = "'use asm';\n";

 for (var i = 0; i < 100; i++) {

     module += "function f" + i + "(i) {\n";

     module += "  i=i|0; var j=0; j=(i+1)|0; i=(j-4)|0; i=(i+j)|0; return i|0\n";

     module += "}\n";

 }

 module += "return f0";

 var script = "(function() {\n" + module + "})";

 for (var i = 0; i < 10; i++) {

     try {

         offThreadCompileScript(script);

         var f = new Function(module);

         var g = runOffThreadScript();

         assertEq(isAsmJSModule(f), true);

         assertEq(isAsmJSModule(g), true);

     } catch (e) {

         // ignore spurious error when offThreadCompileScript can't run in

         // parallel

     }

 }