1 /*
2  * Copyright (C) 2016 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 public class Main {
18 
19   static long longValue;
20 
assertEquals(float expected, float result)21   public static void assertEquals(float expected, float result) {
22     if (expected != result) {
23       throw new Error("Expected: " + expected + ", found: " + result);
24     }
25   }
26 
main(String[] args)27   public static void main(String[] args) {
28     assertEquals(1.0F, $noinline$longToFloat(true));
29     assertEquals(2.0F, $noinline$longToFloat(false));
30   }
31 
32   /// CHECK-START: float Main.$noinline$longToFloat(boolean) register (after)
33   /// CHECK:     <<Get:j\d+>>      StaticFieldGet field_name:Main.longValue
34   /// CHECK:     <<Convert:f\d+>>  TypeConversion [<<Get>>]
35   /// CHECK:                       Return [<<Convert>>]
36 
$noinline$longToFloat(boolean param)37   static float $noinline$longToFloat(boolean param) {
38     // This if else is to avoid constant folding the long constant into a float constant.
39     if (param) {
40       longValue = $inline$returnConstOne();
41     } else {
42       longValue = $inline$returnConstTwo();
43     }
44     // This call prevents D8 from replacing the result of the sget instruction
45     // in the return below by the result of the call to $inline$returnConstOne/Two() above.
46     $inline$preventRedundantFieldLoadEliminationInD8();
47     return (float) longValue;
48   }
49 
$inline$returnConstOne()50   static long $inline$returnConstOne() {
51     return 1L;
52   }
53 
$inline$returnConstTwo()54   static long $inline$returnConstTwo() {
55     return 2L;
56   }
57 
$inline$preventRedundantFieldLoadEliminationInD8()58   static void $inline$preventRedundantFieldLoadEliminationInD8() {}
59 }
60