63 lines
2.1 KiB
Java
63 lines
2.1 KiB
Java
/*
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* Copyright (c) 2023, 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 8306042
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* @summary CCP missed optimization opportunity. Due to missing notification through Casts.
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* @library /test/lib
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* @run main/othervm -Xcomp -XX:-TieredCompilation
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* -XX:CompileOnly=compiler.ccp.TestShiftCastAndNotification::test
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* compiler.ccp.TestShiftCastAndNotification
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*/
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package compiler.ccp;
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public class TestShiftCastAndNotification {
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static int N;
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static int iArrFld[] = new int[1];
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static int test() {
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int x = 1;
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int sval = 4;
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long useless[] = new long[N];
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for (double d1 = 63; d1 > 2; d1 -= 2) {
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for (double d2 = 3; 1 < d2; d2--) {
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x <<= sval; // The LShiftI
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}
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// CastII probably somewhere in the loop structure
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x &= 3; // The AndI
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for (int i = 1; i < 3; i++) {
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try {
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x = iArrFld[0];
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sval = 0;
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} catch (ArithmeticException a_e) {
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}
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}
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}
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return x;
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}
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public static void main(String[] args) {
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test();
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}
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}
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