--- /dev/null 2016-05-31 09:42:47.975716356 -0700 +++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.jtt/src/org/graalvm/compiler/jtt/optimize/Switch02.java 2016-12-09 00:53:05.398838108 -0800 @@ -0,0 +1,281 @@ +/* + * 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 java.util.HashMap; +import java.util.HashSet; +import java.util.LinkedList; + +import org.junit.Test; + +import org.graalvm.compiler.jtt.JTTTest; + +/* + * Tests optimization of switches. + */ +public class Switch02 extends JTTTest { + private static char staticCharVal = 0; + private static short staticShortVal = 0; + private static byte staticByteVal = 0; + + public static int test(int arg) { + switch (arg) { + case 1: + return 2; + default: + return 1; + } + } + + public static int test2char(char arg) { + int result = 392123; + Object x = null; + char val = staticCharVal != 0 ? staticCharVal : arg; + switch (val) { + case (char) 0xFFFF: + result = 23212 / val; + break; + case (char) 0xFFFF - 3: + result = 932991439 / val; + break; + case (char) 0xFFFF - 6: + result = 47329561 / val; + break; + case (char) 0xFFFF - 9: + result = 1950976984 / val; + break; + case (char) 0xFFFF - 10: + result = 97105581 / val; + switch (result) { + case 1: + result = 321; + break; + default: + result = 2391; + break; + } + break; + case (char) 0xFFFF - 12: + result = 99757362 / val; + break; + case (char) 0xFFFF - 15: + result = 912573 / val; + x = new LinkedList<>(); + break; + case (char) 0xFFFF - 18: + x = new HashSet<>(); + result = 876765 / val; + break; + case (char) 0xFFFF - 19: + result = 75442917 / val; + break; + case (char) 0xFFFF - 21: + result = 858112498 / val; + x = new HashMap<>(); + break; + default: + result = 34324341 / val; + } + result = result + (x == null ? 0 : x.hashCode()); + return result; + } + + public static int test2short(short arg) { + int result = 392123; + Object x = null; + short val = staticShortVal != 0 ? staticShortVal : arg; + switch (val) { + case (short) -0x7FFF: + result = 23212 / val; + break; + case (short) -0x7FFF + 3: + result = 932991439 / val; + break; + case (short) -0x7FFF + 6: + result = 47329561 / val; + break; + case (short) -0x7FFF + 9: + result = 1950976984 / val; + break; + case (short) -0x7FFF + 10: + result = 97105581 / val; + switch (result) { + case 1: + result = 321; + break; + default: + result = 2391; + break; + } + break; + case (short) -0x7FFF + 12: + result = 99757362 / val; + break; + case (short) -0x7FFF + 15: + result = 912573 / val; + x = new LinkedList<>(); + break; + case (short) -0x7FFF + 18: + x = new HashSet<>(); + result = 876765 / val; + break; + case (short) -0x7FFF + 19: + result = 75442917 / val; + break; + case (short) -0x7FFF + 21: + result = 858112498 / val; + x = new HashMap<>(); + break; + default: + result = 34324341 / val; + } + result = result + (x == null ? 0 : x.hashCode()); + return result; + } + + public static int test2byte(byte arg) { + int result = 392123; + Object x = null; + byte val = staticByteVal != 0 ? staticByteVal : arg; + switch (val) { + case (byte) -0x7F: + result = 23212 / val; + break; + case (byte) -0x7F + 3: + result = 932991439 / val; + break; + case (byte) -0x7F + 6: + result = 47329561 / val; + break; + case (byte) -0x7F + 9: + result = 1950976984 / val; + break; + case (byte) -0x7F + 10: + result = 97105581 / val; + switch (result) { + case 1: + result = 321; + break; + default: + result = 2391; + break; + } + break; + case (byte) -0x7F + 12: + result = 99757362 / val; + break; + case (byte) -0x7F + 15: + result = 912573 / val; + x = new LinkedList<>(); + break; + case (byte) -0x7F + 18: + x = new HashSet<>(); + result = 876765 / val; + break; + case (byte) -0x7F + 19: + result = 75442917 / val; + break; + case (byte) -0x7F + 20: + result = 856261268 / val; + break; + case (byte) -0x7F + 21: + result = 858112498 / val; + x = new HashMap<>(); + break; + default: + result = 34324341 / val; + } + result = result + (x == null ? 0 : x.hashCode()); + return result; + } + + @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("test2char", (char) (0x0)); + runTest("test2char", (char) (0xFFFF)); + runTest("test2char", (char) (0xFFFF - 21)); // miss + runTest("test2char", (char) (0xFFFF - 22)); // hit + runTest("test2char", (char) (0xFFFF - 23)); // miss (out of bound) + + staticCharVal = (char) 0xFFFF; + runTest("test2char", (char) 0); + staticCharVal = (char) (0xFFFF - 21); + runTest("test2char", (char) 0xFFFF); + staticCharVal = (char) (0xFFFF - 22); + runTest("test2char", (char) 0xFFFF); + staticCharVal = (char) (0xFFFF - 23); + runTest("test2char", (char) 0xFFFF); + } + + @Test + public void run3() throws Throwable { + runTest("test2short", (short) 0x0); + runTest("test2short", (short) -0x7FFF); + runTest("test2short", (short) (-0x7FFF + 21)); // Miss + runTest("test2short", (short) (-0x7FFF + 22)); // hit + runTest("test2short", (short) (-0x7FFF + 23)); // miss (out of bound) + runTest("test2short", (short) 0x7FFF); // miss (out of bound) + + staticShortVal = (short) -0x7FFF; + runTest("test2short", (short) 0); + staticShortVal = (short) (-0x7FFF + 21); + runTest("test2short", (short) 0); + staticShortVal = (short) (-0x7FFF + 22); + runTest("test2short", (short) 0); + staticShortVal = (short) (-0x7FFF + 23); + runTest("test2short", (short) 0); + staticShortVal = (short) 0x7FFF; + runTest("test2short", (short) 0); + } + + @Test + public void run4() throws Throwable { + runTest("test2byte", (byte) 0); + runTest("test2byte", (byte) -0x7F); + runTest("test2byte", (byte) (-0x7F + 21)); // Miss + runTest("test2byte", (byte) (-0x7F + 22)); // hit + runTest("test2byte", (byte) (-0x7F + 23)); // miss (out of bound) + runTest("test2byte", (byte) 0x7F); // miss (out of bound) + + staticByteVal = (byte) -0x7F; + runTest("test2short", (short) 0); + staticByteVal = (byte) (-0x7F + 21); + runTest("test2short", (short) 0); + staticByteVal = (byte) (-0x7F + 22); + runTest("test2short", (short) 0); + staticByteVal = (byte) (-0x7F + 23); + runTest("test2short", (short) 0); + staticByteVal = (byte) 0x7F; + runTest("test2short", (short) 0); + } +}