101 lines
4.2 KiB
Java
101 lines
4.2 KiB
Java
/*
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* Copyright (c) 2024, Red Hat, Inc. All rights reserved.
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* Copyright (c) 2024, 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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package compiler.c2;
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import compiler.lib.ir_framework.*;
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import jdk.internal.misc.Unsafe;
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/*
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* @test
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* @bug 8343068
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* @summary C2: CastX2P Ideal transformation not always applied
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* @modules java.base/jdk.internal.misc
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* @library /test/lib /
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* @run driver compiler.c2.TestCastX2NotProcessedIGVN
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*/
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public class TestCastX2NotProcessedIGVN {
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private static final Unsafe UNSAFE = Unsafe.getUnsafe();
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static int size = 1024;
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static long base = UNSAFE.allocateMemory(4 * size);
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public static void main(String[] args) {
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// Cross-product: +-AlignVector and +-UseCompactObjectHeaders
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TestFramework.runWithFlags("--add-modules", "java.base", "--add-exports", "java.base/jdk.internal.misc=ALL-UNNAMED",
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"-XX:+UnlockExperimentalVMOptions", "-XX:-UseCompactObjectHeaders",
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"-XX:-AlignVector");
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TestFramework.runWithFlags("--add-modules", "java.base", "--add-exports", "java.base/jdk.internal.misc=ALL-UNNAMED",
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"-XX:+UnlockExperimentalVMOptions", "-XX:-UseCompactObjectHeaders",
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"-XX:+AlignVector");
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TestFramework.runWithFlags("--add-modules", "java.base", "--add-exports", "java.base/jdk.internal.misc=ALL-UNNAMED",
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"-XX:+UnlockExperimentalVMOptions", "-XX:+UseCompactObjectHeaders",
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"-XX:-AlignVector");
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TestFramework.runWithFlags("--add-modules", "java.base", "--add-exports", "java.base/jdk.internal.misc=ALL-UNNAMED",
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"-XX:+UnlockExperimentalVMOptions", "-XX:+UseCompactObjectHeaders",
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"-XX:+AlignVector");
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}
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@Test
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@IR(failOn = IRNode.ADD_L, counts = {IRNode.ADD_P, "1"})
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public static byte test1(long base) {
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int offset = 0;
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do {
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offset++;
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} while (offset < 100);
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long longOffset = ((long) offset) * 2;
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return UNSAFE.getByte(null, base + longOffset);
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}
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@Run(test = "test1")
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public static void test1Runner() {
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test1(base);
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}
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@Test
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@IR(counts = {IRNode.LOAD_VECTOR_I, "> 1"},
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applyIfOr = {"UseCompactObjectHeaders", "false", "AlignVector", "false"},
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applyIfPlatformOr = {"x64", "true", "aarch64", "true"})
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public static int test2(int stop, int[] array) {
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int v = 0;
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stop = Math.min(stop, Integer.MAX_VALUE / 4);
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for (int i = 0; i < stop; i++) {
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long offset = ((long)i) * 4;
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array[i] = UNSAFE.getInt(null, offset + base);
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// With AlignVector, we need 8-byte alignment of vector loads/stores.
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// UseCompactObjectHeaders=false UseCompactObjectHeaders=true
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// I_adr = base + 16 + 4*i -> i % 2 = 0 B_adr = base + 12 + 4*i -> i % 2 = 1
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// N_adr = base + 4*i -> i % 2 = 0 N_adr = base + 4*i -> i % 2 = 0
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// -> vectorize -> no vectorization
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}
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return v;
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}
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@Run(test = "test2")
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public static void test2Runner() {
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test2(size, new int[size]);
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}
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}
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