Main.java revision 412f10cfed002ab617c78f2621d68446ca4dd8bd 
1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17// Note that $opt$ is a marker for the optimizing compiler to ensure
18// it compiles these methods.
19
20public class Main {
21  public static void main(String[] args) {
22
23    expectEquals(4, $opt$TestLostCopy());
24    expectEquals(-10, $opt$TestTwoLive());
25    expectEquals(-20, $opt$TestThreeLive());
26    expectEquals(5, $opt$TestFourLive());
27    expectEquals(10, $opt$TestMultipleLive());
28    expectEquals(1, $opt$TestWithBreakAndContinue());
29    expectEquals(-15, $opt$testSpillInIf(5, 6, 7));
30    expectEquals(-567, $opt$TestAgressiveLive1(1, 2, 3, 4, 5, 6, 7));
31    expectEquals(-77, $opt$TestAgressiveLive2(1, 2, 3, 4, 5, 6, 7));
32
33    expectEquals(-55834574850L, $opt$testSpillInIf(5, 6L << 32, 7L << 32));
34    expectEquals(-73014444553L, $opt$TestAgressiveLive1(
35        1L << 32, (1L << 32) + 1, 3L << 32, 4L << 32, 5L << 32, 6L << 32, (1L << 32) + 2));
36    expectEquals(-124554051632L, $opt$TestAgressiveLive2(
37        1L << 32, (1L << 32) + 1, 3L << 32, 4L << 32, 5L << 32, 6L << 32, 7L << 32));
38  }
39
40  public static long $opt$TestLostCopy() {
41    long a = 0;
42    long b = 0;
43    do {
44      b = a;
45      a++;
46    } while (a != 5);
47    return b;
48  }
49
50  public static long $opt$TestTwoLive() {
51    long a = 0;
52    long b = 0;
53    do {
54      a++;
55      b += 3;
56    } while (a != 5);
57    return a - b;
58  }
59
60  public static long $opt$TestThreeLive() {
61    long a = 0;
62    long b = 0;
63    long c = 0;
64    do {
65      a++;
66      b += 3;
67      c += 2;
68    } while (a != 5);
69    return a - b - c;
70  }
71
72  public static long $opt$TestFourLive() {
73    long a = 0;
74    long b = 0;
75    long c = 0;
76    long d = 0;
77    do {
78      a++;
79      b += 3;
80      c += 2;
81      d++;
82    } while (a != 5);
83    return d;
84  }
85
86  public static long $opt$TestMultipleLive() {
87    long a = 0;
88    long b = 0;
89    long c = 0;
90    long d = 0;
91    long e = 0;
92    long f = 0;
93    long g = 0;
94    do {
95      a++;
96      b++;
97      c++;
98      d++;
99      e += 3;
100      f += 2;
101      g += 2;
102    } while (a != 5);
103    return f;
104  }
105
106  public static long $opt$TestWithBreakAndContinue() {
107    long a = 0;
108    long b = 0;
109    do {
110      a++;
111      if (a == 2) {
112        continue;
113      }
114      b++;
115      if (a == 5) {
116        break;
117      }
118    } while (true);
119    return a - b;
120  }
121
122  public static long $opt$testSpillInIf(long a, long b, long c) {
123    long d = 0;
124    long e = 0;
125    if (a == 5) {
126      b++;
127      c++;
128      d += 2;
129      e += 3;
130    }
131
132    return a - b - c - d - e;
133  }
134
135  public static long $opt$TestAgressiveLive1(long a, long b, long c, long d, long e, long f, long g) {
136    long h = a - b;
137    long i = c - d;
138    long j = e - f;
139    long k = 42 + g - a;
140    do {
141      b++;
142      while (k != 1) {
143        --k;
144        ++i;
145        if (i == 9) {
146          ++i;
147        }
148        j += 5;
149      }
150      k = 9;
151      h++;
152    } while (h != 5);
153    return a - b - c - d - e - f - g - h - i - j - k;
154  }
155
156  public static long $opt$TestAgressiveLive2(long a, long b, long c, long d, long e, long f, long g) {
157    long h = a - b;
158    long i = c - d;
159    long j = e - f;
160    long k = 42 + g - a;
161    do {
162      h++;
163    } while (h != 5);
164    return a - b - c - d - e - f - g - h - i - j - k;
165  }
166
167  public static void expectEquals(long expected, long value) {
168    if (expected != value) {
169      throw new Error("Expected: " + expected + ", got: " + value);
170    }
171  }
172}
173