--- old/test/compiler/c2/6661247/Test.java 2016-07-06 19:19:37.775391723 +0300 +++ /dev/null 2016-06-14 14:43:27.230512026 +0300 @@ -1,156 +0,0 @@ -/* - * Copyright (c) 1997, 2008, 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 6661247 - * @summary Internal bug in 32-bit HotSpot optimizer while bit manipulations - */ - -import java.util.Random; -import java.nio.*; - -// This isn't a completely reliable test for 6661247 since the results -// depend on what the local schedule looks like but it does reproduce -// the issue in current builds. - -public class Test { - - public static void test(boolean[] src, int srcPos, LongBuffer dest, long destPos, int count) { - int countStart = (destPos & 63) == 0 ? 0 : 64 - (int)(destPos & 63); - if (countStart > count) - countStart = count; - for (int srcPosMax = srcPos + countStart; srcPos < srcPosMax; srcPos++, destPos++) { - if (src[srcPos]) - dest.put((int)(destPos >>> 6), dest.get((int)(destPos >>> 6)) | 1L << (destPos & 63)); - else - dest.put((int)(destPos >>> 6), dest.get((int)(destPos >>> 6)) & ~(1L << (destPos & 63))); - } - count -= countStart; - int cnt = count >>> 6; - for (int k = (int)(destPos >>> 6), kMax = k + cnt; k < kMax; k++) { - int low = (src[srcPos] ? 1 : 0) - | (src[srcPos + 1] ? 1 << 1 : 0) - | (src[srcPos + 2] ? 1 << 2 : 0) - | (src[srcPos + 3] ? 1 << 3 : 0) - | (src[srcPos + 4] ? 1 << 4 : 0) - | (src[srcPos + 5] ? 1 << 5 : 0) - | (src[srcPos + 6] ? 1 << 6 : 0) - | (src[srcPos + 7] ? 1 << 7 : 0) - | (src[srcPos + 8] ? 1 << 8 : 0) - | (src[srcPos + 9] ? 1 << 9 : 0) - | (src[srcPos + 10] ? 1 << 10 : 0) - | (src[srcPos + 11] ? 1 << 11 : 0) - | (src[srcPos + 12] ? 1 << 12 : 0) - | (src[srcPos + 13] ? 1 << 13 : 0) - | (src[srcPos + 14] ? 1 << 14 : 0) - | (src[srcPos + 15] ? 1 << 15 : 0) - | (src[srcPos + 16] ? 1 << 16 : 0) - | (src[srcPos + 17] ? 1 << 17 : 0) - | (src[srcPos + 18] ? 1 << 18 : 0) - | (src[srcPos + 19] ? 1 << 19 : 0) - | (src[srcPos + 20] ? 1 << 20 : 0) - | (src[srcPos + 21] ? 1 << 21 : 0) - | (src[srcPos + 22] ? 1 << 22 : 0) - | (src[srcPos + 23] ? 1 << 23 : 0) - | (src[srcPos + 24] ? 1 << 24 : 0) - | (src[srcPos + 25] ? 1 << 25 : 0) - | (src[srcPos + 26] ? 1 << 26 : 0) - | (src[srcPos + 27] ? 1 << 27 : 0) - | (src[srcPos + 28] ? 1 << 28 : 0) - | (src[srcPos + 29] ? 1 << 29 : 0) - | (src[srcPos + 30] ? 1 << 30 : 0) - | (src[srcPos + 31] ? 1 << 31 : 0) - ; - srcPos += 32; - int high = (src[srcPos] ? 1 : 0) // PROBLEM! - | (src[srcPos + 1] ? 1 << 1 : 0) - | (src[srcPos + 2] ? 1 << 2 : 0) - | (src[srcPos + 3] ? 1 << 3 : 0) - | (src[srcPos + 4] ? 1 << 4 : 0) - | (src[srcPos + 5] ? 1 << 5 : 0) - | (src[srcPos + 6] ? 1 << 6 : 0) - | (src[srcPos + 7] ? 1 << 7 : 0) - | (src[srcPos + 8] ? 1 << 8 : 0) - | (src[srcPos + 9] ? 1 << 9 : 0) - | (src[srcPos + 10] ? 1 << 10 : 0) - | (src[srcPos + 11] ? 1 << 11 : 0) - | (src[srcPos + 12] ? 1 << 12 : 0) - | (src[srcPos + 13] ? 1 << 13 : 0) - | (src[srcPos + 14] ? 1 << 14 : 0) - | (src[srcPos + 15] ? 1 << 15 : 0) - | (src[srcPos + 16] ? 1 << 16 : 0) - | (src[srcPos + 17] ? 1 << 17 : 0) - | (src[srcPos + 18] ? 1 << 18 : 0) - | (src[srcPos + 19] ? 1 << 19 : 0) - | (src[srcPos + 20] ? 1 << 20 : 0) - | (src[srcPos + 21] ? 1 << 21 : 0) - | (src[srcPos + 22] ? 1 << 22 : 0) - | (src[srcPos + 23] ? 1 << 23 : 0) - | (src[srcPos + 24] ? 1 << 24 : 0) - | (src[srcPos + 25] ? 1 << 25 : 0) - | (src[srcPos + 26] ? 1 << 26 : 0) - | (src[srcPos + 27] ? 1 << 27 : 0) - | (src[srcPos + 28] ? 1 << 28 : 0) - | (src[srcPos + 29] ? 1 << 29 : 0) - | (src[srcPos + 30] ? 1 << 30 : 0) - | (src[srcPos + 31] ? 1 << 31 : 0) - ; - srcPos += 32; - dest.put(k, ((long)low & 0xFFFFFFFFL) | (((long)high) << 32)); - destPos += 64; - } - int countFinish = count & 63; - for (int srcPosMax = srcPos + countFinish; srcPos < srcPosMax; srcPos++, destPos++) { - if (src[srcPos]) - dest.put((int)(destPos >>> 6), dest.get((int)(destPos >>> 6)) | 1L << (destPos & 63)); - else - dest.put((int)(destPos >>> 6), dest.get((int)(destPos >>> 6)) & ~(1L << (destPos & 63))); - } - } - public static void main(String[] args) { - Random r = new Random(); - int entries = 1000; - boolean[] src = new boolean[entries * 64]; - long[] dest = new long[entries]; - long[] result = new long[entries]; - - for (int c = 0; c < 2000; c++) { - for (int i = 0; i < entries; i++) { - long l = r.nextLong(); - for (int bit = 0; bit < 64; bit++) { - src[i * 64 + bit] = (l & (1L << bit)) != 0; - } - dest[i] = 0; - result[i] = l; - } - test(src, 0, LongBuffer.wrap(dest, 0, dest.length), 0, src.length); - for (int i = 0; i < entries; i++) { - if (dest[i] != result[i]) { - throw new InternalError(i + ": " + Long.toHexString(dest[i]) + " != " + Long.toHexString(result[i])); - } - } - } - } -} --- /dev/null 2016-06-14 14:43:27.230512026 +0300 +++ new/test/compiler/c2/Test6661247.java 2016-07-06 19:19:37.635391718 +0300 @@ -0,0 +1,160 @@ +/* + * Copyright (c) 1997, 2008, 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 6661247 + * @summary Internal bug in 32-bit HotSpot optimizer while bit manipulations + * + * @run main compiler.c2.Test6661247 + */ + +package compiler.c2; + +import java.nio.LongBuffer; +import java.util.Random; + +// This isn't a completely reliable test for 6661247 since the results +// depend on what the local schedule looks like but it does reproduce +// the issue in current builds. + +public class Test6661247 { + + public static void test(boolean[] src, int srcPos, LongBuffer dest, long destPos, int count) { + int countStart = (destPos & 63) == 0 ? 0 : 64 - (int)(destPos & 63); + if (countStart > count) + countStart = count; + for (int srcPosMax = srcPos + countStart; srcPos < srcPosMax; srcPos++, destPos++) { + if (src[srcPos]) + dest.put((int)(destPos >>> 6), dest.get((int)(destPos >>> 6)) | 1L << (destPos & 63)); + else + dest.put((int)(destPos >>> 6), dest.get((int)(destPos >>> 6)) & ~(1L << (destPos & 63))); + } + count -= countStart; + int cnt = count >>> 6; + for (int k = (int)(destPos >>> 6), kMax = k + cnt; k < kMax; k++) { + int low = (src[srcPos] ? 1 : 0) + | (src[srcPos + 1] ? 1 << 1 : 0) + | (src[srcPos + 2] ? 1 << 2 : 0) + | (src[srcPos + 3] ? 1 << 3 : 0) + | (src[srcPos + 4] ? 1 << 4 : 0) + | (src[srcPos + 5] ? 1 << 5 : 0) + | (src[srcPos + 6] ? 1 << 6 : 0) + | (src[srcPos + 7] ? 1 << 7 : 0) + | (src[srcPos + 8] ? 1 << 8 : 0) + | (src[srcPos + 9] ? 1 << 9 : 0) + | (src[srcPos + 10] ? 1 << 10 : 0) + | (src[srcPos + 11] ? 1 << 11 : 0) + | (src[srcPos + 12] ? 1 << 12 : 0) + | (src[srcPos + 13] ? 1 << 13 : 0) + | (src[srcPos + 14] ? 1 << 14 : 0) + | (src[srcPos + 15] ? 1 << 15 : 0) + | (src[srcPos + 16] ? 1 << 16 : 0) + | (src[srcPos + 17] ? 1 << 17 : 0) + | (src[srcPos + 18] ? 1 << 18 : 0) + | (src[srcPos + 19] ? 1 << 19 : 0) + | (src[srcPos + 20] ? 1 << 20 : 0) + | (src[srcPos + 21] ? 1 << 21 : 0) + | (src[srcPos + 22] ? 1 << 22 : 0) + | (src[srcPos + 23] ? 1 << 23 : 0) + | (src[srcPos + 24] ? 1 << 24 : 0) + | (src[srcPos + 25] ? 1 << 25 : 0) + | (src[srcPos + 26] ? 1 << 26 : 0) + | (src[srcPos + 27] ? 1 << 27 : 0) + | (src[srcPos + 28] ? 1 << 28 : 0) + | (src[srcPos + 29] ? 1 << 29 : 0) + | (src[srcPos + 30] ? 1 << 30 : 0) + | (src[srcPos + 31] ? 1 << 31 : 0) + ; + srcPos += 32; + int high = (src[srcPos] ? 1 : 0) // PROBLEM! + | (src[srcPos + 1] ? 1 << 1 : 0) + | (src[srcPos + 2] ? 1 << 2 : 0) + | (src[srcPos + 3] ? 1 << 3 : 0) + | (src[srcPos + 4] ? 1 << 4 : 0) + | (src[srcPos + 5] ? 1 << 5 : 0) + | (src[srcPos + 6] ? 1 << 6 : 0) + | (src[srcPos + 7] ? 1 << 7 : 0) + | (src[srcPos + 8] ? 1 << 8 : 0) + | (src[srcPos + 9] ? 1 << 9 : 0) + | (src[srcPos + 10] ? 1 << 10 : 0) + | (src[srcPos + 11] ? 1 << 11 : 0) + | (src[srcPos + 12] ? 1 << 12 : 0) + | (src[srcPos + 13] ? 1 << 13 : 0) + | (src[srcPos + 14] ? 1 << 14 : 0) + | (src[srcPos + 15] ? 1 << 15 : 0) + | (src[srcPos + 16] ? 1 << 16 : 0) + | (src[srcPos + 17] ? 1 << 17 : 0) + | (src[srcPos + 18] ? 1 << 18 : 0) + | (src[srcPos + 19] ? 1 << 19 : 0) + | (src[srcPos + 20] ? 1 << 20 : 0) + | (src[srcPos + 21] ? 1 << 21 : 0) + | (src[srcPos + 22] ? 1 << 22 : 0) + | (src[srcPos + 23] ? 1 << 23 : 0) + | (src[srcPos + 24] ? 1 << 24 : 0) + | (src[srcPos + 25] ? 1 << 25 : 0) + | (src[srcPos + 26] ? 1 << 26 : 0) + | (src[srcPos + 27] ? 1 << 27 : 0) + | (src[srcPos + 28] ? 1 << 28 : 0) + | (src[srcPos + 29] ? 1 << 29 : 0) + | (src[srcPos + 30] ? 1 << 30 : 0) + | (src[srcPos + 31] ? 1 << 31 : 0) + ; + srcPos += 32; + dest.put(k, ((long)low & 0xFFFFFFFFL) | (((long)high) << 32)); + destPos += 64; + } + int countFinish = count & 63; + for (int srcPosMax = srcPos + countFinish; srcPos < srcPosMax; srcPos++, destPos++) { + if (src[srcPos]) + dest.put((int)(destPos >>> 6), dest.get((int)(destPos >>> 6)) | 1L << (destPos & 63)); + else + dest.put((int)(destPos >>> 6), dest.get((int)(destPos >>> 6)) & ~(1L << (destPos & 63))); + } + } + public static void main(String[] args) { + Random r = new Random(); + int entries = 1000; + boolean[] src = new boolean[entries * 64]; + long[] dest = new long[entries]; + long[] result = new long[entries]; + + for (int c = 0; c < 2000; c++) { + for (int i = 0; i < entries; i++) { + long l = r.nextLong(); + for (int bit = 0; bit < 64; bit++) { + src[i * 64 + bit] = (l & (1L << bit)) != 0; + } + dest[i] = 0; + result[i] = l; + } + test(src, 0, LongBuffer.wrap(dest, 0, dest.length), 0, src.length); + for (int i = 0; i < entries; i++) { + if (dest[i] != result[i]) { + throw new InternalError(i + ": " + Long.toHexString(dest[i]) + " != " + Long.toHexString(result[i])); + } + } + } + } +}