--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.test/src/org/graalvm/compiler/replacements/test/DeoptimizeOnIntegerExactTest.java Fri Aug 17 13:20:53 2018 -0700
@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+package org.graalvm.compiler.replacements.test;
+
+import jdk.vm.ci.meta.SpeculationLog;
+import org.graalvm.compiler.code.CompilationResult;
+import org.graalvm.compiler.core.test.GraalCompilerTest;
+import org.graalvm.compiler.debug.DebugContext;
+import org.junit.Test;
+
+import jdk.vm.ci.code.InstalledCode;
+import jdk.vm.ci.code.InvalidInstalledCodeException;
+import jdk.vm.ci.meta.ResolvedJavaMethod;
+
+public class DeoptimizeOnIntegerExactTest extends GraalCompilerTest {
+
+ private final SpeculationLog speculationLog;
+
+ static boolean highlyLikely = true;
+ static boolean highlyUnlikely = false;
+
+ public DeoptimizeOnIntegerExactTest() {
+ speculationLog = getCodeCache().createSpeculationLog();
+ }
+
+ public static int testAddExactSnippet(int x, int y) {
+ if (highlyLikely) {
+ return highlyUnlikely ? Math.addExact(x, y) : x;
+ } else {
+ return highlyUnlikely ? y : Math.addExact(x, y);
+ }
+ }
+
+ public static int testSubtractExactSnippet(int x, int y) {
+ if (highlyLikely) {
+ return highlyUnlikely ? Math.subtractExact(x, y) : x;
+ } else {
+ return highlyUnlikely ? y : Math.subtractExact(x, y);
+ }
+ }
+
+ public static int testMultiplyExactSnippet(int x, int y) {
+ if (highlyLikely) {
+ return highlyUnlikely ? Math.multiplyExact(x, y) : x;
+ } else {
+ return highlyUnlikely ? y : Math.multiplyExact(x, y);
+ }
+ }
+
+ public static int testIncrementExactSnippet(int x, int y) {
+ if (highlyLikely) {
+ return highlyUnlikely ? Math.incrementExact(x) : x;
+ } else {
+ return highlyUnlikely ? y : Math.incrementExact(x);
+ }
+ }
+
+ public static int testDecrementExactSnippet(int x, int y) {
+ if (highlyLikely) {
+ return highlyUnlikely ? Math.decrementExact(x) : x;
+ } else {
+ return highlyUnlikely ? y : Math.decrementExact(x);
+ }
+ }
+
+ public void testAgainIfDeopt(String methodName, int x, int y) throws InvalidInstalledCodeException {
+ ResolvedJavaMethod method = getResolvedJavaMethod(methodName);
+ // We speculate on the first compilation. The global value numbering will merge the two
+ // floating integer exact operation nodes.
+ InstalledCode code = getCode(method);
+ code.executeVarargs(x, y);
+ if (!code.isValid()) {
+ // At the recompilation, we anchor the floating integer exact operation nodes at their
+ // corresponding branches.
+ code = getCode(method);
+ code.executeVarargs(x, y);
+ // The recompiled code should not get deoptimized.
+ assertTrue(code.isValid());
+ }
+ }
+
+ @Test
+ public void testAddExact() throws InvalidInstalledCodeException {
+ testAgainIfDeopt("testAddExactSnippet", Integer.MAX_VALUE, 1);
+ }
+
+ @Test
+ public void testSubtractExact() throws InvalidInstalledCodeException {
+ testAgainIfDeopt("testSubtractExactSnippet", 0, Integer.MIN_VALUE);
+ }
+
+ @Test
+ public void testMultiplyExact() throws InvalidInstalledCodeException {
+ testAgainIfDeopt("testMultiplyExactSnippet", Integer.MAX_VALUE, 2);
+ }
+
+ @Test
+ public void testIncrementExact() throws InvalidInstalledCodeException {
+ testAgainIfDeopt("testIncrementExactSnippet", Integer.MAX_VALUE, 1);
+ }
+
+ @Test
+ public void testDecrementExact() throws InvalidInstalledCodeException {
+ testAgainIfDeopt("testDecrementExactSnippet", Integer.MIN_VALUE, 1);
+ }
+
+ @Override
+ protected SpeculationLog getSpeculationLog() {
+ speculationLog.collectFailedSpeculations();
+ return speculationLog;
+ }
+
+ @Override
+ protected InstalledCode addMethod(DebugContext debug, final ResolvedJavaMethod method, final CompilationResult compilationResult) {
+ return getBackend().createInstalledCode(debug, method, compilationResult, speculationLog, null, false);
+ }
+}