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.StampPair; 39 import org.graalvm.compiler.nodes.ParameterNode; 40 import org.graalvm.compiler.nodes.calc.ReinterpretNode; 41 42 import jdk.vm.ci.meta.JavaKind; 43 44 @RunWith(Parameterized.class) 45 public class ReinterpretStampFloatToIntTest extends ReinterpretStampTest { 46 47 @Parameters(name = "{0}") 48 public static Collection<Object[]> data() { 49 List<Object[]> ret = new ArrayList<>(); 50 51 for (int x : interestingInts) { 52 float lowerBound = Float.intBitsToFloat(x); 53 if (Float.isNaN(lowerBound)) { 54 continue; 55 } 56 57 for (int y : interestingInts) { 58 float upperBound = Float.intBitsToFloat(y); 59 if (Float.isNaN(upperBound)) { 60 continue; 61 } 62 63 if (Float.compare(lowerBound, upperBound) <= 0) { 64 ret.add(new Object[]{new FloatStamp(Float.SIZE, lowerBound, upperBound, true)}); 65 ret.add(new Object[]{new FloatStamp(Float.SIZE, lowerBound, upperBound, false)}); 66 } 67 } 68 } 69 70 ret.add(new Object[]{new FloatStamp(Float.SIZE, Float.NaN, Float.NaN, false)}); 71 72 return ret; 73 } 74 75 @Parameter(value = 0) public FloatStamp inputStamp; 76 77 @Test 78 public void run() { 79 ParameterNode param = new ParameterNode(0, StampPair.createSingle(inputStamp)); 80 ReinterpretNode reinterpret = new ReinterpretNode(JavaKind.Int, param); 81 reinterpret.inferStamp(); 82 83 IntegerStamp resultStamp = (IntegerStamp) reinterpret.stamp(); 84 Assert.assertEquals(Integer.SIZE, resultStamp.getBits()); 85 86 for (int result : interestingInts) { 87 float input = Float.intBitsToFloat(result); 88 89 if (inputStamp.contains(input) && !resultStamp.contains(result)) { 90 Assert.fail(String.format("value %f (0x%x) is in input stamp, but not in result stamp (%s)", input, result, resultStamp)); 91 } 92 } 93 } 94 }