src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.test/src/org/graalvm/compiler/replacements/test/DeoptimizeOnIntegerExactTest.java
changeset 51436 091c0d22e735
child 54084 84f10bbf993f
--- /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);
+    }
+}