1 /* 2 * Copyright (C) 2017 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: char Main.$noinline$inlineMonomorphic(java.lang.CharSequence) inliner (before) 20 /// CHECK: InvokeInterface method_name:java.lang.CharSequence.charAt 21 22 /// CHECK-START: char Main.$noinline$inlineMonomorphic(java.lang.CharSequence) inliner (after) 23 /// CHECK: Deoptimize 24 /// CHECK: InvokeVirtual method_name:java.lang.String.charAt intrinsic:StringCharAt 25 26 /// CHECK-START: char Main.$noinline$inlineMonomorphic(java.lang.CharSequence) instruction_simplifier$after_inlining (after) 27 /// CHECK: Deoptimize 28 /// CHECK-NOT: InvokeInterface 29 /// CHECK-NOT: InvokeVirtual 30 $noinline$inlineMonomorphic(CharSequence cs)31 public static char $noinline$inlineMonomorphic(CharSequence cs) { 32 return cs.charAt(0); 33 } 34 35 /// CHECK-START: char Main.$noinline$knownReceiverType() inliner (before) 36 /// CHECK: InvokeInterface method_name:java.lang.CharSequence.charAt 37 38 /// CHECK-START: char Main.$noinline$knownReceiverType() inliner (after) 39 /// CHECK: InvokeVirtual method_name:java.lang.String.charAt intrinsic:StringCharAt 40 41 /// CHECK-START: char Main.$noinline$knownReceiverType() instruction_simplifier$after_inlining (after) 42 /// CHECK-NOT: InvokeInterface 43 /// CHECK-NOT: InvokeVirtual 44 $noinline$knownReceiverType()45 public static char $noinline$knownReceiverType() { 46 CharSequence cs = "abc"; 47 return cs.charAt(1); 48 } 49 50 /// CHECK-START: boolean Main.$noinline$stringEquals(java.lang.Object) inliner (before) 51 /// CHECK: InvokeVirtual method_name:java.lang.Object.equals intrinsic:None 52 53 /// CHECK-START: boolean Main.$noinline$stringEquals(java.lang.Object) inliner (after) 54 /// CHECK: Deoptimize 55 /// CHECK: InvokeVirtual method_name:java.lang.String.equals intrinsic:StringEquals 56 57 /// CHECK-START: boolean Main.$noinline$stringEquals(java.lang.Object) instruction_simplifier$after_inlining (after) 58 /// CHECK: Deoptimize 59 /// CHECK: InvokeVirtual method_name:java.lang.String.equals intrinsic:StringEquals 60 $noinline$stringEquals(Object obj)61 public static boolean $noinline$stringEquals(Object obj) { 62 return obj.equals("def"); 63 } 64 test()65 public static void test() { 66 // Warm up inline cache. 67 for (int i = 0; i < 600000; i++) { 68 $noinline$inlineMonomorphic(str); 69 } 70 for (int i = 0; i < 600000; i++) { 71 $noinline$stringEquals(str); 72 } 73 ensureJitCompiled(Main.class, "$noinline$stringEquals"); 74 ensureJitCompiled(Main.class, "$noinline$inlineMonomorphic"); 75 ensureJitCompiled(Main.class, "$noinline$knownReceiverType"); 76 if ($noinline$inlineMonomorphic(str) != 'x') { 77 throw new Error("Expected x"); 78 } 79 if ($noinline$knownReceiverType() != 'b') { 80 throw new Error("Expected b"); 81 } 82 if ($noinline$stringEquals("abc")) { 83 throw new Error("Expected false"); 84 } 85 } 86 main(String[] args)87 public static void main(String[] args) { 88 System.loadLibrary(args[0]); 89 test(); 90 } 91 92 static String str = "xyz"; 93 ensureJitCompiled(Class<?> itf, String method_name)94 private static native void ensureJitCompiled(Class<?> itf, String method_name); 95 } 96