90 lines
3.5 KiB
Java
90 lines
3.5 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 8253191
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*
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* @library /test/lib
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* @modules java.base/jdk.internal.vm.annotation
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*
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* @run main/bootclasspath/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-TieredCompilation compiler.c2.TestUnsignedByteCompare1
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*/
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package compiler.c2;
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import java.lang.invoke.*;
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import jdk.internal.vm.annotation.DontInline;
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import jdk.test.lib.Asserts;
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public class TestUnsignedByteCompare1 {
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@DontInline static boolean testByteGT0(byte[] val) { return (val[0] & mask()) > 0; }
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@DontInline static boolean testByteGE0(byte[] val) { return (val[0] & mask()) >= 0; }
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@DontInline static boolean testByteEQ0(byte[] val) { return (val[0] & mask()) == 0; }
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@DontInline static boolean testByteNE0(byte[] val) { return (val[0] & mask()) != 0; }
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@DontInline static boolean testByteLE0(byte[] val) { return (val[0] & mask()) <= 0; }
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@DontInline static boolean testByteLT0(byte[] val) { return (val[0] & mask()) < 0; }
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static void testValue(byte b) {
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byte[] bs = new byte[] { b };
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Asserts.assertEquals(((b & mask()) > 0), testByteGT0(bs), errorMessage(b, "GT0"));
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Asserts.assertEquals(((b & mask()) >= 0), testByteGE0(bs), errorMessage(b, "GE0"));
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Asserts.assertEquals(((b & mask()) == 0), testByteEQ0(bs), errorMessage(b, "EQ0"));
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Asserts.assertEquals(((b & mask()) != 0), testByteNE0(bs), errorMessage(b, "NE0"));
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Asserts.assertEquals(((b & mask()) <= 0), testByteLE0(bs), errorMessage(b, "LE0"));
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Asserts.assertEquals(((b & mask()) < 0), testByteLT0(bs), errorMessage(b, "LT0"));
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}
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public static void main(String[] args) {
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for (int mask = 0; mask <= 0xFF; mask++) {
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setMask(mask);
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for (int i = 0; i < 20_000; i++) {
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testValue((byte) i);
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}
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}
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System.out.println("TEST PASSED");
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}
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static String errorMessage(byte b, String type) {
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return String.format("%s: val=0x%x mask=0x%x", type, b, mask());
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}
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// Mutable mask as a compile-time constant.
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private static final CallSite MASK_CS = new MutableCallSite(MethodType.methodType(int.class));
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private static final MethodHandle MASK_MH = MASK_CS.dynamicInvoker();
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static int mask() {
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try {
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return (int) MASK_MH.invokeExact();
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} catch (Throwable t) {
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throw new InternalError(t); // should NOT happen
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}
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}
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static void setMask(int mask) {
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MethodHandle constant = MethodHandles.constant(int.class, mask);
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MASK_CS.setTarget(constant);
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}
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}
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