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package org.graalvm.compiler.nodes.test;

import static org.graalvm.compiler.core.test.GraalCompilerTest.getInitialOptions;
import static org.junit.Assert.assertEquals;

import org.graalvm.compiler.core.common.type.ArithmeticOpTable;
import org.graalvm.compiler.debug.DebugContext;
import org.graalvm.compiler.debug.DebugContext.Builder;
import org.graalvm.compiler.nodes.ConstantNode;
import org.graalvm.compiler.nodes.NodeView;
import org.graalvm.compiler.nodes.StructuredGraph;
import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions;
import org.graalvm.compiler.options.OptionValues;
import org.junit.Before;
import org.junit.Test;

import jdk.vm.ci.meta.JavaConstant;

This class tests that the canonicalization for constant negate nodes cover all cases.
/** * This class tests that the canonicalization for constant negate nodes cover all cases. */
public class NegateNodeCanonicalizationTest { private StructuredGraph graph; @Before public void before() { OptionValues options = getInitialOptions(); DebugContext debug = new Builder(options).build(); graph = new StructuredGraph.Builder(options, debug, AllowAssumptions.YES).build(); } @Test public void testByte() { byte[] a = new byte[]{Byte.MIN_VALUE, Byte.MIN_VALUE + 1, -1, 0, 1, Byte.MAX_VALUE - 1, Byte.MAX_VALUE}; for (byte i : a) { ConstantNode node = ConstantNode.forByte(i, graph); JavaConstant expected = JavaConstant.forInt(-i); assertEquals(expected, ArithmeticOpTable.forStamp(node.stamp(NodeView.DEFAULT)).getNeg().foldConstant(node.asConstant())); } } @Test public void testChar() { char[] a = new char[]{Character.MIN_VALUE, Character.MIN_VALUE + 1, 0, 1, Character.MAX_VALUE - 1, Character.MAX_VALUE}; for (char i : a) { ConstantNode node = ConstantNode.forChar(i, graph); JavaConstant expected = JavaConstant.forInt(-i); assertEquals(expected, ArithmeticOpTable.forStamp(node.stamp(NodeView.DEFAULT)).getNeg().foldConstant(node.asConstant())); } } @Test public void testShort() { short[] a = new short[]{Short.MIN_VALUE, Short.MIN_VALUE + 1, -1, 0, 1, Short.MAX_VALUE - 1, Short.MAX_VALUE}; for (short i : a) { ConstantNode node = ConstantNode.forShort(i, graph); JavaConstant expected = JavaConstant.forInt(-i); assertEquals(expected, ArithmeticOpTable.forStamp(node.stamp(NodeView.DEFAULT)).getNeg().foldConstant(node.asConstant())); } } @Test public void testInt() { int[] a = new int[]{Integer.MIN_VALUE, Integer.MIN_VALUE + 1, -1, 0, 1, Integer.MAX_VALUE - 1, Integer.MAX_VALUE}; for (int i : a) { ConstantNode node = ConstantNode.forInt(i, graph); JavaConstant expected = JavaConstant.forInt(-i); assertEquals(expected, ArithmeticOpTable.forStamp(node.stamp(NodeView.DEFAULT)).getNeg().foldConstant(node.asConstant())); } } @Test public void testLong() { long[] a = new long[]{Long.MIN_VALUE, Long.MIN_VALUE + 1, -1, 0, 1, Long.MAX_VALUE - 1, Long.MAX_VALUE}; for (long i : a) { ConstantNode node = ConstantNode.forLong(i, graph); JavaConstant expected = JavaConstant.forLong(-i); assertEquals(expected, ArithmeticOpTable.forStamp(node.stamp(NodeView.DEFAULT)).getNeg().foldConstant(node.asConstant())); } } @Test public void testFloat() { float[] a = new float[]{Float.MIN_VALUE, Float.MIN_VALUE + 1, -1, 0, 1, Float.MAX_VALUE - 1, Float.MAX_VALUE}; for (float i : a) { ConstantNode node = ConstantNode.forFloat(i, graph); JavaConstant expected = JavaConstant.forFloat(-i); assertEquals(expected, ArithmeticOpTable.forStamp(node.stamp(NodeView.DEFAULT)).getNeg().foldConstant(node.asConstant())); } } @Test public void testDouble() { double[] a = new double[]{Double.MIN_VALUE, Double.MIN_VALUE + 1, -1, 0, 1, Double.MAX_VALUE - 1, Double.MAX_VALUE}; for (double i : a) { ConstantNode node = ConstantNode.forDouble(i, graph); JavaConstant expected = JavaConstant.forDouble(-i); assertEquals(expected, ArithmeticOpTable.forStamp(node.stamp(NodeView.DEFAULT)).getNeg().foldConstant(node.asConstant())); } } }