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59 lines
2.3 KiB
Java
59 lines
2.3 KiB
Java
/*
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* Copyright (c) 2025, 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 8367483
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* @summary Missed worklist notification during IGVN for CastX2P(SubX(x, y)) pattern,
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* leads to missed optimization.
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* @run main/othervm
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* -XX:CompileCommand=compileonly,compiler.igvn.MissedOptimizationWithCastX2PSubX::test
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* -XX:-TieredCompilation
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* -XX:+IgnoreUnrecognizedVMOptions
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* -XX:VerifyIterativeGVN=1110
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* compiler.igvn.MissedOptimizationWithCastX2PSubX
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* @run main compiler.igvn.MissedOptimizationWithCastX2PSubX
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*/
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package compiler.igvn;
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import java.lang.foreign.*;
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public class MissedOptimizationWithCastX2PSubX {
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public static void main(String[] args) {
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MemorySegment a = Arena.ofAuto().allocate(74660);
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MemorySegment b = Arena.ofAuto().allocate(74660);
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for (int i = 0; i < 1_000; i++) {
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test(a, 69830/2 - 100, b, -10_000, 0, 1_000);
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}
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}
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public static void test(MemorySegment a, long invarA, MemorySegment b, long invarB, long ivLo, long ivHi) {
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for (long i = ivHi-1; i >= ivLo; i-=1) {
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a.set(ValueLayout.JAVA_CHAR_UNALIGNED, 69830L + 2L * i + -2L * invarA, (char)42);
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b.set(ValueLayout.JAVA_FLOAT_UNALIGNED, 9071L + -4L * i + -4L * invarB, 42);
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}
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}
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}
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