1 /* 2 * Copyright (C) 2015 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 { Main()18 public Main() { 19 } 20 testLiveArgument(int arg)21 static int testLiveArgument(int arg) { 22 doStaticNativeCallLiveVreg(); 23 return arg; 24 } 25 moveArgToCalleeSave()26 static void moveArgToCalleeSave() { 27 try { 28 Thread.sleep(0); 29 } catch (Exception e) { 30 throw new Error(e); 31 } 32 } 33 $opt$noinline$testIntervalHole(int arg, boolean test)34 static void $opt$noinline$testIntervalHole(int arg, boolean test) { 35 // Move the argument to callee save to ensure it is in 36 // a readable register. 37 moveArgToCalleeSave(); 38 if (test) { 39 staticField1 = arg; 40 // The environment use of `arg` should not make it live. 41 doStaticNativeCallLiveVreg(); 42 } else { 43 staticField2 = arg; 44 // The environment use of `arg` should not make it live. 45 doStaticNativeCallLiveVreg(); 46 } 47 if (staticField1 == 2) { 48 throw new Error(""); 49 } 50 } 51 doStaticNativeCallLiveVreg()52 static native void doStaticNativeCallLiveVreg(); 53 main(String[] args)54 public static void main(String[] args) { 55 System.loadLibrary(args[0]); 56 if (testLiveArgument(staticField3) != staticField3) { 57 throw new Error("Expected " + staticField3); 58 } 59 60 if (testLiveArgument(staticField3) != staticField3) { 61 throw new Error("Expected " + staticField3); 62 } 63 64 testWrapperIntervalHole(1, true); 65 testWrapperIntervalHole(1, false); 66 } 67 68 // Wrapper method to avoid inlining, which affects liveness 69 // of dex registers. testWrapperIntervalHole(int arg, boolean test)70 static void testWrapperIntervalHole(int arg, boolean test) { 71 try { 72 Thread.sleep(0); 73 $opt$noinline$testIntervalHole(arg, test); 74 } catch (Exception e) { 75 throw new Error(e); 76 } 77 } 78 79 static int staticField1; 80 static int staticField2; 81 static int staticField3 = 42; 82 } 83