| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 6700100 8156760 |
| * @summary small instance clone as loads/stores |
| * @library / |
| * |
| * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement |
| * -XX:CompileCommand=dontinline,compiler.arraycopy.TestInstanceCloneAsLoadsStores::m* |
| * compiler.arraycopy.TestInstanceCloneAsLoadsStores |
| * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement |
| * -XX:CompileCommand=dontinline,compiler.arraycopy.TestInstanceCloneAsLoadsStores::m* |
| * -XX:+IgnoreUnrecognizedVMOptions -XX:+StressArrayCopyMacroNode |
| * compiler.arraycopy.TestInstanceCloneAsLoadsStores |
| * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement |
| * -XX:CompileCommand=dontinline,compiler.arraycopy.TestInstanceCloneAsLoadsStores::m* |
| * -XX:+IgnoreUnrecognizedVMOptions -XX:-ReduceInitialCardMarks |
| * compiler.arraycopy.TestInstanceCloneAsLoadsStores |
| */ |
| |
| package compiler.arraycopy; |
| |
| public class TestInstanceCloneAsLoadsStores extends TestInstanceCloneUtils { |
| |
| // Should be compiled as loads/stores |
| static Object m1(D src) throws CloneNotSupportedException { |
| return src.clone(); |
| } |
| |
| // Should be compiled as adds of src (dest allocation eliminated) |
| static int m2(D src) throws CloneNotSupportedException { |
| D dest = (D)src.clone(); |
| return dest.i1 + dest.i2 + ((int)dest.i3) + dest.i4 + dest.i5; |
| } |
| |
| // Should be compiled as arraycopy stub call (object too large) |
| static int m3(E src) throws CloneNotSupportedException { |
| E dest = (E)src.clone(); |
| return dest.i1 + dest.i2 + dest.i3 + dest.i4 + dest.i5 + |
| dest.i6 + dest.i7 + dest.i8 + dest.i9; |
| } |
| |
| // Need profiling on src's type to be able to know number of |
| // fields. Cannot clone as loads/stores if compile doesn't use it. |
| static Object m4(A src) throws CloneNotSupportedException { |
| return src.clone(); |
| } |
| |
| // Same as above but should optimize out dest allocation |
| static int m5(A src) throws CloneNotSupportedException { |
| A dest = (A)src.clone(); |
| return dest.i1 + dest.i2 + dest.i3 + dest.i4 + dest.i5; |
| } |
| |
| // Check that if we have no fields to clone we do fine |
| static Object m6(F src) throws CloneNotSupportedException { |
| return src.clone(); |
| } |
| |
| // With virtual call to clone: clone inlined from profling which |
| // gives us exact type of src so we can clone it with |
| // loads/stores. |
| static G m7(G src) throws CloneNotSupportedException { |
| return (G)src.myclone(); |
| } |
| |
| // Virtual call to clone but single target: exact type unknown, |
| // clone intrinsic uses profiling to determine exact type and |
| // clone with loads/stores. |
| static J m8(J src) throws CloneNotSupportedException { |
| return (J)src.myclone(); |
| } |
| |
| public static void main(String[] args) throws Exception { |
| |
| TestInstanceCloneAsLoadsStores test = new TestInstanceCloneAsLoadsStores(); |
| |
| test.doTest(d, "m1"); |
| test.doTest(d, "m2"); |
| test.doTest(e, "m3"); |
| test.doTest(a, "m4"); |
| test.doTest(a, "m5"); |
| test.doTest(f, "m6"); |
| test.doTest(g, "m7"); |
| test.doTest(k, "m8"); |
| |
| if (!test.success) { |
| throw new RuntimeException("some tests failed"); |
| } |
| |
| } |
| } |