1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 6700100 8156760 27 * @summary small instance clone as loads/stores 28 * @library / 29 * 30 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement 31 * -XX:CompileCommand=dontinline,compiler.arraycopy.TestInstanceCloneAsLoadsStores::m* 32 * compiler.arraycopy.TestInstanceCloneAsLoadsStores 33 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement 34 * -XX:CompileCommand=dontinline,compiler.arraycopy.TestInstanceCloneAsLoadsStores::m* 35 * -XX:+IgnoreUnrecognizedVMOptions -XX:+StressArrayCopyMacroNode 36 * compiler.arraycopy.TestInstanceCloneAsLoadsStores 37 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement 38 * -XX:CompileCommand=dontinline,compiler.arraycopy.TestInstanceCloneAsLoadsStores::m* 39 * -XX:+IgnoreUnrecognizedVMOptions -XX:-ReduceInitialCardMarks 40 * compiler.arraycopy.TestInstanceCloneAsLoadsStores 41 */ 42 43 package compiler.arraycopy; 44 45 public class TestInstanceCloneAsLoadsStores extends TestInstanceCloneUtils { 46 47 // Should be compiled as loads/stores 48 static Object m1(D src) throws CloneNotSupportedException { 49 return src.clone(); 50 } 51 52 // Should be compiled as adds of src (dest allocation eliminated) 53 static int m2(D src) throws CloneNotSupportedException { 54 D dest = (D)src.clone(); 55 return dest.i1 + dest.i2 + ((int)dest.i3) + dest.i4 + dest.i5; 56 } 57 58 // Should be compiled as arraycopy stub call (object too large) 59 static int m3(E src) throws CloneNotSupportedException { 60 E dest = (E)src.clone(); 61 return dest.i1 + dest.i2 + dest.i3 + dest.i4 + dest.i5 + 62 dest.i6 + dest.i7 + dest.i8 + dest.i9; 63 } 64 65 // Need profiling on src's type to be able to know number of 66 // fields. Cannot clone as loads/stores if compile doesn't use it. 67 static Object m4(A src) throws CloneNotSupportedException { 68 return src.clone(); 69 } 70 71 // Same as above but should optimize out dest allocation 72 static int m5(A src) throws CloneNotSupportedException { 73 A dest = (A)src.clone(); 74 return dest.i1 + dest.i2 + dest.i3 + dest.i4 + dest.i5; 75 } 76 77 // Check that if we have no fields to clone we do fine 78 static Object m6(F src) throws CloneNotSupportedException { 79 return src.clone(); 80 } 81 82 // With virtual call to clone: clone inlined from profling which 83 // gives us exact type of src so we can clone it with 84 // loads/stores. 85 static G m7(G src) throws CloneNotSupportedException { 86 return (G)src.myclone(); 87 } 88 89 // Virtual call to clone but single target: exact type unknown, 90 // clone intrinsic uses profiling to determine exact type and 91 // clone with loads/stores. 92 static J m8(J src) throws CloneNotSupportedException { 93 return (J)src.myclone(); 94 } 95 96 public static void main(String[] args) throws Exception { 97 98 TestInstanceCloneAsLoadsStores test = new TestInstanceCloneAsLoadsStores(); 99 100 test.doTest(d, "m1"); 101 test.doTest(d, "m2"); 102 test.doTest(e, "m3"); 103 test.doTest(a, "m4"); 104 test.doTest(a, "m5"); 105 test.doTest(f, "m6"); 106 test.doTest(g, "m7"); 107 test.doTest(k, "m8"); 108 109 if (!test.success) { 110 throw new RuntimeException("some tests failed"); 111 } 112 113 } 114 }