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/*
* Copyright (c) 2020, 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 8237581
* @summary Testing allocation expansion when there is no use of the allocation
* @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:+PrintCompilation -XX:+PrintEliminateAllocations -XX:CompileCommand=compileonly,compiler.allocation.TestAllocation::test*
* compiler.allocation.TestAllocation
* @run main/othervm -Xbatch -XX:+IgnoreUnrecognizedVMOptions -XX:+PrintCompilation -XX:+PrintEliminateAllocations -XX:-DoEscapeAnalysis -XX:CompileCommand=compileonly,compiler.allocation.TestAllocation::test*
* compiler.allocation.TestAllocation
*/
package compiler.allocation;
public class TestAllocation {
public static volatile int size = 128;
public static volatile int neg_size = -128;
public int testUnknownPositiveArrayLength() {
Payload w = new Payload(17, size);
return w.i + w.ba.length;
}
public int testStoreCapture() {
byte[] bs = new byte[1];
bs[0] = 1;
return bs.length;
}
public int testUnknownNegativeArrayLength() {
boolean success = false;
try {
Payload w = new Payload(17, neg_size);
return w.i + w.ba.length;
} catch (NegativeArraySizeException e) {
success = true;
}
if (!success) {
throw new RuntimeException("Should have thrown NegativeArraySizeException");
}
return 0;
}
public int testConstantPositiveArrayLength() {
Payload w = new Payload(173, 10);
return w.i + w.ba.length;
}
public int testConstantPositiveArrayLength2() {
Payload w = new Payload(173, 10);
w.i = 17;
w.ba = new byte[10];
return w.i + w.ba.length;
}
public int testConstantNegativeArrayLength() {
boolean success = false;
try {
Payload w = new Payload(173, -10);
return w.i + w.ba.length;
} catch (NegativeArraySizeException e) {
success = true;
}
if (!success) {
throw new RuntimeException("Should have thrown NegativeArraySizeException");
}
return 0;
}
public static class Payload {
public int i;
public byte ba[];
public Payload(int i, int size) {
this.i = i;
this.ba = new byte[size];
}
}
public static void main(String[] strArr) {
TestAllocation test = new TestAllocation();
for (int i = 0; i < 10_000; i++ ) {
test.testUnknownPositiveArrayLength();
test.testUnknownNegativeArrayLength();
test.testConstantPositiveArrayLength();
test.testConstantPositiveArrayLength2();
test.testConstantNegativeArrayLength();
test.testStoreCapture();
}
}
}
class Wrapper {
int[] arr;
void setArr(int... many) { arr = many; }
}
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