/* * Copyright (C) 2016 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ public class Main { /// CHECK-START: void Main.testNewStringFromBytes() builder (after) /// CHECK-DAG: InvokeStaticOrDirect method_name:java.lang.StringFactory.newStringFromBytes intrinsic:None /// CHECK-START: void Main.testNewStringFromBytes() intrinsics_recognition (after) /// CHECK-DAG: InvokeStaticOrDirect method_name:java.lang.StringFactory.newStringFromBytes intrinsic:StringNewStringFromBytes public static void testNewStringFromBytes() { byte[] bytes = { 'f', 'o', 'o' }; String s = StringFactory.newStringFromBytes(bytes, 0, 0, 3); System.out.println(s); } // The (native) method // // java.lang.StringFactory.newStringFromChars(int offset, int charCount, char[] data) // // is recognized as intrinsic StringNewStringFromChars. However, // because this method is not public, we cannot call it and check // that the compiler actually intrinsifies it (as it does for the // StringNewStringFromBytes and StringNewStringFromString // intrinsics) with Checker. // // We can call a public method such as // // java.lang.StringFactory.newStringFromChars(char[] data) // // which contains a call to the former (non-public) native method. // However, this call will not be inlined (because it is a method in // another Dex file and which contains a call, which needs an // environment), so we cannot use Checker here to ensure the native // call was intrinsified either. /// CHECK-START: void Main.testNewStringFromChars() builder (after) /// CHECK-DAG: InvokeStaticOrDirect method_name:java.lang.StringFactory.newStringFromChars intrinsic:None /// CHECK-START: void Main.testNewStringFromChars() intrinsics_recognition (after) /// CHECK-DAG: InvokeStaticOrDirect method_name:java.lang.StringFactory.newStringFromChars intrinsic:None /// CHECK-START: void Main.testNewStringFromChars() inliner (after) /// CHECK-DAG: InvokeStaticOrDirect method_name:java.lang.StringFactory.newStringFromChars intrinsic:None public static void testNewStringFromChars() { char[] chars = { 'b', 'a', 'r' }; String s = StringFactory.newStringFromChars(chars); System.out.println(s); } /// CHECK-START: void Main.testNewStringFromString() builder (after) /// CHECK-DAG: InvokeStaticOrDirect method_name:java.lang.StringFactory.newStringFromString intrinsic:None /// CHECK-START: void Main.testNewStringFromString() intrinsics_recognition (after) /// CHECK-DAG: InvokeStaticOrDirect method_name:java.lang.StringFactory.newStringFromString intrinsic:StringNewStringFromString public static void testNewStringFromString() { String s1 = "baz"; String s2 = StringFactory.newStringFromString(s1); System.out.println(s2); } public static void main(String[] args) throws Exception { testNewStringFromBytes(); testNewStringFromChars(); testNewStringFromString(); } }