1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.nodes.test; 24 25 import java.util.ArrayList; 26 import java.util.Collection; 27 import java.util.List; 28 29 import org.junit.Assert; 30 import org.junit.Test; 31 import org.junit.runner.RunWith; 32 import org.junit.runners.Parameterized; 33 import org.junit.runners.Parameterized.Parameter; 34 import org.junit.runners.Parameterized.Parameters; 35 36 import org.graalvm.compiler.core.common.type.FloatStamp; 37 import org.graalvm.compiler.core.common.type.IntegerStamp; 38 import org.graalvm.compiler.core.common.type.StampFactory; 39 import org.graalvm.compiler.core.common.type.StampPair; 40 import org.graalvm.compiler.nodes.ParameterNode; 41 import org.graalvm.compiler.nodes.calc.ReinterpretNode; 42 43 import jdk.vm.ci.meta.JavaKind; 44 45 @RunWith(Parameterized.class) 46 public class ReinterpretStampIntToFloatTest extends ReinterpretStampTest { 47 48 @Parameters(name = "{0}") 49 public static Collection<Object[]> data() { 50 List<Object[]> ret = new ArrayList<>(); 51 52 for (int lowerBound : interestingInts) { 53 for (int upperBound : interestingInts) { 54 if (lowerBound <= upperBound) { 55 ret.add(new Object[]{StampFactory.forInteger(JavaKind.Int, lowerBound, upperBound)}); 56 } 57 if ((lowerBound & ~upperBound) == 0) { 58 ret.add(new Object[]{IntegerStamp.stampForMask(Integer.SIZE, lowerBound & 0xFFFF_FFFFL, upperBound & 0xFFFF_FFFFL)}); 59 } 60 } 61 } 62 63 return ret; 64 } 65 66 @Parameter(value = 0) public IntegerStamp inputStamp; 67 68 @Test 69 public void run() { 70 ParameterNode param = new ParameterNode(0, StampPair.createSingle(inputStamp)); 71 ReinterpretNode reinterpret = new ReinterpretNode(JavaKind.Float, param); 72 reinterpret.inferStamp(); 73 74 FloatStamp resultStamp = (FloatStamp) reinterpret.stamp(); 75 Assert.assertEquals(Float.SIZE, resultStamp.getBits()); 76 77 for (int input : interestingInts) { 78 float result = Float.intBitsToFloat(input); 79 80 if (inputStamp.contains(input) && !resultStamp.contains(result)) { 81 Assert.fail(String.format("value 0x%x (%f) is in input stamp, but not in result stamp (%s)", input, result, resultStamp)); 82 } 83 } 84 } 85 }