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/*
* Copyright (c) 2002, 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
*
* @summary converted from VM Testbase runtime/jbe/dead/dead11.
* VM Testbase keywords: [quick, runtime]
*
* @library /vmTestbase
* /test/lib
* @run main/othervm vm.compiler.jbe.dead.dead11.dead11
*/
package vm.compiler.jbe.dead.dead11;
// dead11.java
/* -- Test the elimination of dead assignments to a local array
Example:
void foo()
{
int arr[] = new int[SIZE];
arr[1] = 3;
}
In the example below, most of the assignments to the local array a[] are dead and can be eliminated.
*/
public class dead11 {
int SIZE = 30;
public static void main(String args[]) {
dead11 dce = new dead11();
System.out.println("f()="+dce.f()+"; fopt()="+dce.fopt());
if (dce.f() == dce.fopt()) {
System.out.println("Test dead11 Passed.");
} else {
throw new Error("Test dead11 Failed: f()=" + dce.f() + " != fopt()=" + dce.fopt());
}
}
int f() {
int a[] = new int[SIZE];
a[0] = 0;
a[1] = 1;
a[2] = 2;
a[3] = 3;
a[4] = 4;
a[5] = 5;
a[6] = 6;
a[7] = 7;
a[8] = 8;
a[9] = 9;
a[10] = 10;
a[11] = 11;
a[12] = 12;
a[13] = 13;
a[14] = 14;
a[15] = 15;
a[16] = 16;
a[17] = 17;
a[18] = 18;
a[19] = 19;
a[20] = 20;
a[21] = 21;
a[22] = 22;
a[23] = 23;
a[24] = 24;
a[25] = 25;
a[26] = 26;
a[27] = 27;
a[28] = 28;
a[29] = 29;
return a[12];
}
// Code fragment after dead code elimination
int fopt() {
int a[] = new int[SIZE];
a[12] = 12;
return a[12] = 12;
}
}
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