• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1// Copyright 2015 the V8 project authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// Flags: --allow-natives-syntax --use-osr --turbo-osr
6
7"use strict";
8
9function nest(body, name, depth) {
10  var header = "";
11  for (var i = 0; i < depth; i++) {
12    var x = "x" + (i + 1);
13    header += "  for(var " + x + " = 0; " + x + " < 2; " + x + " = " + x + " + 1 | 0) {\n";
14    body = body + "}"
15  }
16
17  return body.replace(new RegExp("function " + name + "\\(\\) {"),
18                      "function " + name + "_" + x + "() {\n" + header);
19}
20
21function test(expected, func, depth) {
22  assertEquals(expected, func());
23  assertEquals(expected, func());
24  assertEquals(expected, func());
25
26  var orig = func.toString();
27  var name = func.name;
28  for (var depth = 1; depth < 4; depth++) {
29    var body = nest(orig, name, depth);
30    func = eval("(" + body + ")");
31
32    assertEquals(expected, func());
33    assertEquals(expected, func());
34    assertEquals(expected, func());
35  }
36}
37
38function foo() {
39  var result;
40  {
41    let sum = 0;
42    for (var i = 0; i < 10; i++) {
43      %OptimizeOsr();
44      sum += i;
45    }
46    result = sum;
47  }
48  return result;
49}
50
51test(45, foo);
52
53function bar() {
54  let sum = 0;
55  for (var i = 0; i < 10; i++) {
56    %OptimizeOsr();
57    sum += i;
58  }
59  return sum;
60}
61
62test(45, bar);
63
64function bon() {
65  {
66    let sum = 0;
67    for (var i = 0; i < 10; i++) {
68      if (i == 5) %OptimizeOsr();
69      sum += i;
70    }
71    return sum;
72  }
73}
74
75test(45, bon);
76
77function row() {
78  var i = 0;
79  {
80    let sum = 0;
81    while (true) {
82      if (i == 8) return sum;
83      %OptimizeOsr();
84      sum = i;
85      i = i + 1 | 0;
86    }
87  }
88  return 11;
89}
90
91test(7, row);
92
93function nub() {
94  let i = 0;
95  while (i < 2) {
96    %OptimizeOsr();
97    i++;
98  }
99  return i;
100}
101
102test(2, nub);
103
104function kub() {
105  var result = 0;
106  let i = 0;
107  while (i < 2) {
108    let x = i;
109    %OptimizeOsr();
110    i++;
111    result = x;
112  }
113  return result;
114}
115
116test(1, kub);
117