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      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   /// CHECK-START: int Main.inlineLoop() inliner (before)
     20   /// CHECK-DAG:     <<Invoke:i\d+>>  InvokeStaticOrDirect
     21   /// CHECK-DAG:                      Return [<<Invoke>>]
     22 
     23   /// CHECK-START: int Main.inlineLoop() inliner (after)
     24   /// CHECK-NOT:                      InvokeStaticOrDirect
     25 
     26   /// CHECK-START: int Main.inlineLoop() inliner (after)
     27   /// CHECK-DAG:     <<Constant:i\d+>>   IntConstant 42
     28   /// CHECK-DAG:                         Return [<<Constant>>]
     29 
     30   /// CHECK-START: int Main.inlineLoop() licm (after)
     31   /// CHECK:                         Goto loop:{{B\d+}}
     32 
     33   public static int inlineLoop() {
     34     return loopMethod();
     35   }
     36 
     37   /// CHECK-START: void Main.inlineWithinLoop() inliner (before)
     38   /// CHECK:      InvokeStaticOrDirect
     39 
     40   /// CHECK-START: void Main.inlineWithinLoop() inliner (after)
     41   /// CHECK-NOT:  InvokeStaticOrDirect
     42 
     43   /// CHECK-START: void Main.inlineWithinLoop() licm (after)
     44   /// CHECK-DAG:  Goto loop:<<OuterLoop:B\d+>> outer_loop:none
     45   /// CHECK-DAG:  Goto outer_loop:<<OuterLoop>>
     46 
     47   public static void inlineWithinLoop() {
     48     while (doLoop) {
     49       loopMethod();
     50     }
     51   }
     52 
     53   public static int loopMethod() {
     54     while (doLoop) {}
     55     return 42;
     56   }
     57 
     58   public static boolean doLoop = false;
     59 
     60   public static void main(String[] args) {
     61     inlineLoop();
     62     inlineWithinLoop();
     63   }
     64 }
     65