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94 lines
3.3 KiB
Java
94 lines
3.3 KiB
Java
/*
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* Copyright (c) 2026, 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 id=all-flags
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* @bug 8374889
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* @summary Test case that can compile unexpected code paths in VectorAPI cast intrinsification.
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* @modules jdk.incubator.vector
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* @library /test/lib /
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* @run main/othervm
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* -XX:+IgnoreUnrecognizedVMOptions
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* -XX:-TieredCompilation -Xbatch
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* -XX:+UnlockDiagnosticVMOptions
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* -XX:StressSeed=1462975402
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* -XX:+StressIncrementalInlining
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* -XX:CompileCommand=compileonly,${test.main.class}::test2
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* ${test.main.class}
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*/
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/*
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* @test id=no-stress-seed
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* @bug 8374889
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* @modules jdk.incubator.vector
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* @library /test/lib /
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* @run main/othervm
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* -XX:+IgnoreUnrecognizedVMOptions
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* -XX:-TieredCompilation -Xbatch
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* -XX:+UnlockDiagnosticVMOptions
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* -XX:+StressIncrementalInlining
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* -XX:CompileCommand=compileonly,${test.main.class}::test2
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* ${test.main.class}
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*/
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/*
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* @test id=vanilla
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* @bug 8374889
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* @modules jdk.incubator.vector
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* @library /test/lib /
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* @run driver ${test.main.class}
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*/
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package compiler.vectorapi;
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import jdk.incubator.vector.*;
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public class TestCastShapeBadOpc {
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public static void main(String[] args) {
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for (int i = 0; i < 100_000; ++i) {
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test1();
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test2();
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}
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}
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// This code does not trigger the bug itself, but seems to be important for profiling,
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// so that test2 fails.
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public static Object test1() {
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LongVector v0 = LongVector.broadcast(LongVector.SPECIES_512, -15L);
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var v1 = (ByteVector)v0.convertShape(VectorOperators.Conversion.ofReinterpret(long.class, byte.class), ByteVector.SPECIES_128, 0);
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var v2 = (ByteVector)v1.castShape(ByteVector.SPECIES_256, 0);
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return v2;
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}
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public static Object test2() {
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var v0 = ShortVector.broadcast(ShortVector.SPECIES_64, (short)7729);
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var v1 = (FloatVector)v0.reinterpretShape(FloatVector.SPECIES_64, 0);
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// The castShape below should take the "C" path in AbstractVector::convert0, but sometimes
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// we also compile the "Z" case because of profiling. This means we attempt to create
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// a vector cast from float -> long, but unfortunately with a UCAST (float -> long is signed).
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// This triggered an assert in VectorCastNode::opcode.
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var v2 = (LongVector)v1.castShape(LongVector.SPECIES_256, 0);
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return v2;
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}
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}
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