Tue, 12 Nov 2013 13:47:57 +0100
8028198: SIGSEGV in PhaseIdealLoop::build_loop_late_post
Reviewed-by: iveresov, kvn
src/share/vm/opto/loopopts.cpp | file | annotate | diff | comparison | revisions | |
test/compiler/intrinsics/mathexact/SplitThruPhiTest.java | file | annotate | diff | comparison | revisions |
1.1 --- a/src/share/vm/opto/loopopts.cpp Tue Nov 12 13:58:37 2013 +0100 1.2 +++ b/src/share/vm/opto/loopopts.cpp Tue Nov 12 13:47:57 2013 +0100 1.3 @@ -42,6 +42,13 @@ 1.4 // so disable this for now 1.5 return NULL; 1.6 } 1.7 + 1.8 + if (n->is_MathExact()) { 1.9 + // MathExact has projections that are not correctly handled in the code 1.10 + // below. 1.11 + return NULL; 1.12 + } 1.13 + 1.14 int wins = 0; 1.15 assert(!n->is_CFG(), ""); 1.16 assert(region->is_Region(), "");
2.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 2.2 +++ b/test/compiler/intrinsics/mathexact/SplitThruPhiTest.java Tue Nov 12 13:47:57 2013 +0100 2.3 @@ -0,0 +1,50 @@ 2.4 +/* 2.5 + * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 2.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 2.7 + * 2.8 + * This code is free software; you can redistribute it and/or modify it 2.9 + * under the terms of the GNU General Public License version 2 only, as 2.10 + * published by the Free Software Foundation. 2.11 + * 2.12 + * This code is distributed in the hope that it will be useful, but WITHOUT 2.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 2.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 2.15 + * version 2 for more details (a copy is included in the LICENSE file that 2.16 + * accompanied this code). 2.17 + * 2.18 + * You should have received a copy of the GNU General Public License version 2.19 + * 2 along with this work; if not, write to the Free Software Foundation, 2.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2.21 + * 2.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2.23 + * or visit www.oracle.com if you need additional information or have any 2.24 + * questions. 2.25 + */ 2.26 + 2.27 +/* 2.28 + * @test 2.29 + * @bug 8028198 2.30 + * @summary Verify that split through phi does the right thing 2.31 + * @compile SplitThruPhiTest.java 2.32 + * @run main SplitThruPhiTest 2.33 + * 2.34 + */ 2.35 + 2.36 +public class SplitThruPhiTest { 2.37 + public static volatile int value = 19; 2.38 + public static int store = 0; 2.39 + public static void main(String[] args) { 2.40 + for (int i = 0; i < 150000; ++i) { 2.41 + store = runTest(value); 2.42 + } 2.43 + } 2.44 + 2.45 + public static int runTest(int val) { 2.46 + int result = Math.addExact(val, 1); 2.47 + int total = 0; 2.48 + for (int i = val; i < 200; i = Math.addExact(i, 1)) { 2.49 + total += i; 2.50 + } 2.51 + return total; 2.52 + } 2.53 +}