1 /* 2 * Copyright (C) 2022 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(String[] args)18 public static void main(String[] args) throws Exception { 19 try { 20 $noinline$testEndsWithThrow(); 21 throw new Exception("Unreachable"); 22 } catch (Error expected) { 23 } 24 25 try { 26 $noinline$testEndsWithThrowButNotDirectly(); 27 throw new Exception("Unreachable"); 28 } catch (Error expected) { 29 } 30 } 31 32 // Empty methods are easy to inline anywhere. easyToInline()33 private static void easyToInline() {} $inline$easyToInline()34 private static void $inline$easyToInline() {} 35 36 /// CHECK-START: int Main.$noinline$testEndsWithThrow() inliner (before) 37 /// CHECK: InvokeStaticOrDirect method_name:Main.easyToInline 38 39 /// CHECK-START: int Main.$noinline$testEndsWithThrow() inliner (after) 40 /// CHECK: InvokeStaticOrDirect method_name:Main.easyToInline $noinline$testEndsWithThrow()41 static int $noinline$testEndsWithThrow() { 42 easyToInline(); 43 throw new Error(""); 44 } 45 46 // Currently we only stop inlining if the method's basic block ends with a throw. We do not stop 47 // inlining for methods that eventually always end with a throw. $noinline$testEndsWithThrowButNotDirectly()48 static int $noinline$testEndsWithThrowButNotDirectly() { 49 $inline$easyToInline(); 50 if (justABoolean) { 51 $inline$easyToInline(); 52 } else { 53 $inline$easyToInline(); 54 } 55 throw new Error(""); 56 } 57 58 static boolean justABoolean; 59 } 60