Mercurial > jdk8-mips64-public > langtools / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/test/tools/javac/8009170/RedundantByteCodeInArrayTest.java	Wed Apr 27 01:34:52 2016 +0800
     1.3 @@ -0,0 +1,71 @@
     1.4 +/*
     1.5 + * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
     1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     1.7 + *
     1.8 + * This code is free software; you can redistribute it and/or modify it
     1.9 + * under the terms of the GNU General Public License version 2 only, as
    1.10 + * published by the Free Software Foundation.
    1.11 + *
    1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
    1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    1.14 + * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    1.15 + * version 2 for more details (a copy is included in the LICENSE file that
    1.16 + * accompanied this code).
    1.17 + *
    1.18 + * You should have received a copy of the GNU General Public License version
    1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
    1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    1.21 + *
    1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    1.23 + * or visit www.oracle.com if you need additional information or have any
    1.24 + * questions.
    1.25 + */
    1.26 +
    1.27 +/*
    1.28 + * @test
    1.29 + * @bug 8009170
    1.30 + * @summary Regression: javac generates redundant bytecode in assignop involving
    1.31 + * arrays
    1.32 + * @run main RedundantByteCodeInArrayTest
    1.33 + */
    1.34 +
    1.35 +import java.io.File;
    1.36 +import java.io.IOException;
    1.37 +
    1.38 +import com.sun.tools.classfile.Attribute;
    1.39 +import com.sun.tools.classfile.ClassFile;
    1.40 +import com.sun.tools.classfile.Code_attribute;
    1.41 +import com.sun.tools.classfile.Code_attribute.InvalidIndex;
    1.42 +import com.sun.tools.classfile.ConstantPool;
    1.43 +import com.sun.tools.classfile.ConstantPoolException;
    1.44 +import com.sun.tools.classfile.Descriptor.InvalidDescriptor;
    1.45 +import com.sun.tools.classfile.Method;
    1.46 +
    1.47 +public class RedundantByteCodeInArrayTest {
    1.48 +    public static void main(String[] args)
    1.49 +            throws IOException, ConstantPoolException, InvalidDescriptor, InvalidIndex {
    1.50 +        new RedundantByteCodeInArrayTest()
    1.51 +                .checkClassFile(new File(System.getProperty("test.classes", "."),
    1.52 +                    RedundantByteCodeInArrayTest.class.getName() + ".class"));
    1.53 +    }
    1.54 +
    1.55 +    void arrMethod(int[] array, int p, int inc) {
    1.56 +        array[p] += inc;
    1.57 +    }
    1.58 +
    1.59 +    void checkClassFile(File file)
    1.60 +            throws IOException, ConstantPoolException, InvalidDescriptor, InvalidIndex {
    1.61 +        ClassFile classFile = ClassFile.read(file);
    1.62 +        ConstantPool constantPool = classFile.constant_pool;
    1.63 +
    1.64 +        //lets get all the methods in the class file.
    1.65 +        for (Method method : classFile.methods) {
    1.66 +            if (method.getName(constantPool).equals("arrMethod")) {
    1.67 +                Code_attribute code = (Code_attribute) method.attributes
    1.68 +                        .get(Attribute.Code);
    1.69 +                if (code.max_locals > 4)
    1.70 +                    throw new AssertionError("Too many locals for method arrMethod");
    1.71 +            }
    1.72 +        }
    1.73 +    }
    1.74 +}