regress-1423.js revision 3fb3ca8c7ca439d408449a395897395c0faae8d1 
1// Copyright 2011 the V8 project authors. All rights reserved.
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3// modification, are permitted provided that the following conditions are
4// met:
5//
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15//
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27
28// Flags: --allow-natives-syntax
29
30// Test that the Lithium environment iterator does stop iteration early.
31"use strict";
32
33function f0() {
34  return f1('literal', true);
35}
36
37function f1(x, y) {
38  return f2(x, y);
39}
40
41// Because it's strict, f2 has an environment containing only the constants
42// undefined, 'literal', and false.  Bug 1423 would cause environment
43// iteration to stop early.
44//
45// Bug manifests as UNREACHABLE code (due to an unallocated register) in
46// debug builds.
47function f2(x, y) {
48  if (y) {
49    if (f3(x, 'other-literal')) {
50      return 0;
51    } else {
52      return 1;
53    }
54  } else {
55    return 2;
56  }
57}
58
59function f3(x, y) {
60  return x === y;
61}
62
63for (var i = 0; i < 5; ++i) f0();
64%OptimizeFunctionOnNextCall(f0);
65assertEquals(1, f0());
66