--- /dev/null 2017-01-22 10:16:57.869617664 -0800 +++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.jtt/src/org/graalvm/compiler/jtt/optimize/Reduce_IntShift01.java 2017-02-15 17:04:10.571205709 -0800 @@ -0,0 +1,110 @@ +/* + * Copyright (c) 2009, 2012, 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.jtt.optimize; + +import org.junit.Test; + +import org.graalvm.compiler.jtt.JTTTest; + +/* + * Tests optimization of integer operations. + */ +public class Reduce_IntShift01 extends JTTTest { + + public static int test(int arg) { + if (arg == 0) { + return shift0(arg + 10); + } + if (arg == 1) { + return shift1(arg + 10); + } + if (arg == 2) { + return shift2(arg + 10); + } + if (arg == 3) { + return shift3(arg + 10); + } + if (arg == 4) { + return shift4(arg + 10); + } + if (arg == 5) { + return shift5(arg + 10); + } + return 0; + } + + public static int shift0(int x) { + return x >> 0; + } + + public static int shift1(int x) { + return x >>> 0; + } + + public static int shift2(int x) { + return x << 0; + } + + public static int shift3(int x) { + return x >> 64; + } + + public static int shift4(int x) { + return x >>> 64; + } + + public static int shift5(int x) { + return x << 64; + } + + @Test + public void run0() throws Throwable { + runTest("test", 0); + } + + @Test + public void run1() throws Throwable { + runTest("test", 1); + } + + @Test + public void run2() throws Throwable { + runTest("test", 2); + } + + @Test + public void run3() throws Throwable { + runTest("test", 3); + } + + @Test + public void run4() throws Throwable { + runTest("test", 4); + } + + @Test + public void run5() throws Throwable { + runTest("test", 5); + } + +}