Mercurial > hg > truffle
diff test/compiler/8011771/Test8011771.java @ 10388:320b4e0f0892
8015585: Missing regression test for 8011771
Summary: missing regression test
Reviewed-by: kvn
author | roland |
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date | Thu, 30 May 2013 11:21:01 +0200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/compiler/8011771/Test8011771.java Thu May 30 11:21:01 2013 +0200 @@ -0,0 +1,77 @@ +/* + * Copyright (c) 2013, 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 8011771 + * @summary Array bound check elimination's in block motion doesn't always reset its data structures from one step to the other. + * @run main/othervm -XX:-BackgroundCompilation Test8011771 + * + */ + +public class Test8011771 { + + static void m(int[] a, int[] b, int j) { + // Array bound check elimination inserts a predicate before + // the loop. We'll have the predicate fail, so the method is + // recompiled without optimistic optimizations + for (int i = 0; i < 10; i++) { + a[i] = i; + } + + // The test itself + a[j] = 0; + a[j+5] = 0; + b[j+4] = 0; // this range check shouldn't be eliminated + } + + static public void main(String[] args) { + int[] arr1 = new int[10], arr2 = new int[10]; + // force compilation: + for (int i = 0; i < 5000; i++) { + m(arr1, arr2, 0); + } + + try { + m(new int[1], null, 0); // force predicate failure + } catch(ArrayIndexOutOfBoundsException e) {} + + // force compilation again (no optimistic opts): + for (int i = 0; i < 5000; i++) { + m(arr1, arr2, 0); + } + + // Check that the range check on the second array wasn't optimized out + boolean success = false; + try { + m(arr1, new int[1], 0); + } catch(ArrayIndexOutOfBoundsException e) { + success = true; + } + if (success) { + System.out.println("TEST PASSED"); + } else { + throw new RuntimeException("TEST FAILED: erroneous bound check elimination"); + } + } +}