1 /* 2 * Copyright (c) 2015, 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 27 * @summary small instance clone as loads/stores 28 * @compile TestInstanceCloneAsLoadsStores.java TestInstanceCloneUtils.java 29 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement -XX:CompileCommand=dontinline,TestInstanceCloneAsLoadsStores::m* TestInstanceCloneAsLoadsStores 30 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement -XX:CompileCommand=dontinline,TestInstanceCloneAsLoadsStores::m* -XX:+IgnoreUnrecognizedVMOptions -XX:+StressArrayCopyMacroNode TestInstanceCloneAsLoadsStores 31 * 32 */ 33 34 public class TestInstanceCloneAsLoadsStores extends TestInstanceCloneUtils { 35 36 // Should be compiled as loads/stores 37 static Object m1(D src) throws CloneNotSupportedException { 38 return src.clone(); 39 } 40 41 // Should be compiled as adds of src (dest allocation eliminated) 42 static int m2(D src) throws CloneNotSupportedException { 43 D dest = (D)src.clone(); 44 return dest.i1 + dest.i2 + ((int)dest.i3) + dest.i4 + dest.i5; 45 } 46 47 // Should be compiled as arraycopy stub call (object too large) 48 static int m3(E src) throws CloneNotSupportedException { 49 E dest = (E)src.clone(); 50 return dest.i1 + dest.i2 + dest.i3 + dest.i4 + dest.i5 + 51 dest.i6 + dest.i7 + dest.i8 + dest.i9; 52 } 53 54 // Need profiling on src's type to be able to know number of 55 // fields. Cannot clone as loads/stores if compile doesn't use it. 56 static Object m4(A src) throws CloneNotSupportedException { 57 return src.clone(); 58 } 59 60 // Same as above but should optimize out dest allocation 61 static int m5(A src) throws CloneNotSupportedException { 62 A dest = (A)src.clone(); 63 return dest.i1 + dest.i2 + dest.i3 + dest.i4 + dest.i5; 64 } 65 66 // Check that if we have no fields to clone we do fine 67 static Object m6(F src) throws CloneNotSupportedException { 68 return src.clone(); 69 } 70 71 // With virtual call to clone: clone inlined from profling which 72 // gives us exact type of src so we can clone it with 73 // loads/stores. 74 static G m7(G src) throws CloneNotSupportedException { 75 return (G)src.myclone(); 76 } 77 78 // Virtual call to clone but single target: exact type unknown, 79 // clone intrinsic uses profiling to determine exact type and 80 // clone with loads/stores. 81 static J m8(J src) throws CloneNotSupportedException { 82 return (J)src.myclone(); 83 } 84 85 public static void main(String[] args) throws Exception { 86 87 TestInstanceCloneAsLoadsStores test = new TestInstanceCloneAsLoadsStores(); 88 89 test.doTest(d, "m1"); 90 test.doTest(d, "m2"); 91 test.doTest(e, "m3"); 92 test.doTest(a, "m4"); 93 test.doTest(a, "m5"); 94 test.doTest(f, "m6"); 95 test.doTest(g, "m7"); 96 test.doTest(k, "m8"); 97 98 if (!test.success) { 99 throw new RuntimeException("some tests failed"); 100 } 101 102 } 103 }