63 lines
2.1 KiB
Java
63 lines
2.1 KiB
Java
/*
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* Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8251458
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* @summary Test int range overflow of MultiBranchData counter.
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* @run main/othervm -XX:CompileCommand=dontinline,compiler.profiling.TestMultiBranchDataOverflow::test
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* -Xbatch -XX:Tier4BackEdgeThreshold=2147483647
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* compiler.profiling.TestMultiBranchDataOverflow
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*/
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package compiler.profiling;
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public class TestMultiBranchDataOverflow {
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public static int test(int val, long max) {
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int res = 0;
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for (long l = 0; l < max; ++l) {
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switch (val) {
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case 0:
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return 0;
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case 42:
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res++;
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break;
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}
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}
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return res;
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}
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public static void main(String[] args) {
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// Warmup to generate profile information that has a MultiBranchData
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// counter > Integer.MAX_VALUE for the i == 42 lookupswitch branch.
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long max = Integer.MAX_VALUE + 100_000L;
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test(42, max);
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// Trigger C2 compilation
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for (int i = 0; i < 10_000; ++i) {
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test(42, 1);
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}
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}
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}
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