block-let-crankshaft.js revision 85b71799222b55eb5dd74ea26efe0c64ab655c8c 
1// Copyright 2011 the V8 project authors. All rights reserved.
2// Redistribution and use in source and binary forms, with or without
3// modification, are permitted provided that the following conditions are
4// met:
5//
6//     * Redistributions of source code must retain the above copyright
7//       notice, this list of conditions and the following disclaimer.
8//     * Redistributions in binary form must reproduce the above
9//       copyright notice, this list of conditions and the following
10//       disclaimer in the documentation and/or other materials provided
11//       with the distribution.
12//     * Neither the name of Google Inc. nor the names of its
13//       contributors may be used to endorse or promote products derived
14//       from this software without specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28// Flags: --harmony-block-scoping --allow-natives-syntax
29
30// Test that temporal dead zone semantics for function and block scoped
31// ket bindings are handled by the optimizing compiler.
32
33function f(x, b) {
34  let y = (b ? y : x) + 42;
35  return y;
36}
37
38function g(x, b) {
39  {
40    let y = (b ? y : x) + 42;
41    return y;
42  }
43}
44
45for (var i=0; i<10; i++) {
46  f(i, false);
47  g(i, false);
48}
49
50%OptimizeFunctionOnNextCall(f);
51%OptimizeFunctionOnNextCall(g);
52
53try {
54  f(42, true);
55} catch (e) {
56  assertInstanceof(e, ReferenceError);
57}
58
59try {
60  g(42, true);
61} catch (e) {
62  assertInstanceof(e, ReferenceError);
63}
64