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test/compiler/8011771/Test8011771.java@dbb05f6d93c4 (annotated)

test/compiler/8011771/Test8011771.java

Mon, 28 Jul 2014 15:06:38 -0700

author

fzhinkin

date

Mon, 28 Jul 2014 15:06:38 -0700

changeset 6997

dbb05f6d93c4

parent 0

f90c822e73f8

permissions

-rw-r--r--

8051344: JVM crashed in Compile::start() during method parsing w/ UseRTMDeopt turned on
Summary: call rtm_deopt() only if there were no compilation bailouts before.
Reviewed-by: kvn

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	/*
aoqi@0	25	* @test
aoqi@0	26	* @bug 8011771
aoqi@0	27	* @summary Array bound check elimination's in block motion doesn't always reset its data structures from one step to the other.
aoqi@0	28	* @run main/othervm -XX:-BackgroundCompilation Test8011771
aoqi@0	29	*
aoqi@0	30	*/
aoqi@0	31
aoqi@0	32	public class Test8011771 {
aoqi@0	33
aoqi@0	34	static void m(int[] a, int[] b, int j) {
aoqi@0	35	// Array bound check elimination inserts a predicate before
aoqi@0	36	// the loop. We'll have the predicate fail, so the method is
aoqi@0	37	// recompiled without optimistic optimizations
aoqi@0	38	for (int i = 0; i < 10; i++) {
aoqi@0	39	a[i] = i;
aoqi@0	40	}
aoqi@0	41
aoqi@0	42	// The test itself
aoqi@0	43	a[j] = 0;
aoqi@0	44	a[j+5] = 0;
aoqi@0	45	b[j+4] = 0; // this range check shouldn't be eliminated
aoqi@0	46	}
aoqi@0	47
aoqi@0	48	static public void main(String[] args) {
aoqi@0	49	int[] arr1 = new int[10], arr2 = new int[10];
aoqi@0	50	// force compilation:
aoqi@0	51	for (int i = 0; i < 5000; i++) {
aoqi@0	52	m(arr1, arr2, 0);
aoqi@0	53	}
aoqi@0	54
aoqi@0	55	try {
aoqi@0	56	m(new int[1], null, 0); // force predicate failure
aoqi@0	57	} catch(ArrayIndexOutOfBoundsException e) {}
aoqi@0	58
aoqi@0	59	// force compilation again (no optimistic opts):
aoqi@0	60	for (int i = 0; i < 5000; i++) {
aoqi@0	61	m(arr1, arr2, 0);
aoqi@0	62	}
aoqi@0	63
aoqi@0	64	// Check that the range check on the second array wasn't optimized out
aoqi@0	65	boolean success = false;
aoqi@0	66	try {
aoqi@0	67	m(arr1, new int[1], 0);
aoqi@0	68	} catch(ArrayIndexOutOfBoundsException e) {
aoqi@0	69	success = true;
aoqi@0	70	}
aoqi@0	71	if (success) {
aoqi@0	72	System.out.println("TEST PASSED");
aoqi@0	73	} else {
aoqi@0	74	throw new RuntimeException("TEST FAILED: erroneous bound check elimination");
aoqi@0	75	}
aoqi@0	76	}
aoqi@0	77	}