v8/test/mjsunit/undetectable.js
2015-05-11 11:28:56 +00:00

88 lines
1.5 KiB
JavaScript

// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax
var obj = %GetUndetectable();
function shouldNotBeTaken() {
fail("Undetectable branch should not be taken", "branch was taken");
}
function shouldBeTaken() {
fail("Inverted Undetectable branch should be taken", "branch was not taken");
}
function testCompares() {
assertTrue(!obj);
assertFalse(!!obj);
assertFalse(obj == true);
assertFalse(obj == false);
assertFalse(obj === true);
assertFalse(obj === false);
assertEquals(2, obj ? 1 : 2);
assertEquals(obj, true && obj);
assertEquals(obj, false || obj);
}
function testIfs() {
if (obj) {
shouldNotBeTaken();
}
if (obj) {
shouldNotBeTaken();
} else {
// do nothing
}
if (!obj) {
// do nothing
} else {
shouldBeTaken();
}
}
function testWhiles() {
while (obj) {
shouldNotBeTaken();
}
var i = 0;
while (!obj) {
i++;
break;
}
assertEquals(1, i);
}
function testFors() {
for (var i = 0; obj; i++) {
shouldNotBeTaken();
}
var j = 0;
for (var i = 0; !obj; i++) {
j++;
break;
}
assertEquals(1, j);
}
for (var j = 0; j < 5; j++) {
testCompares();
testIfs();
testWhiles();
testFors();
if (j == 3) {
%OptimizeFunctionOnNextCall(testCompares);
%OptimizeFunctionOnNextCall(testIfs);
%OptimizeFunctionOnNextCall(testWhiles);
%OptimizeFunctionOnNextCall(testFors);
}
}