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annotate graal/com.oracle.graal.api.directives.test/src/com/oracle/graal/api/directives/test/IterationDirectiveTest.java @ 19403:61d3cb8e1280

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Add generic parameter to NodeClass. Change Graph#getNodes(Class) to Graph#getNodes(NodeClass).
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Mon, 16 Feb 2015 17:47:43 +0100
parents 2358c0e65b9e
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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19046
2358c0e65b9e Unit tests for GraalDirectives API.
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1 /*
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2 * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.graal.api.directives.test;
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24
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25 import org.junit.*;
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26
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27 import com.oracle.graal.api.directives.*;
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28 import com.oracle.graal.compiler.test.*;
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29 import com.oracle.graal.graph.iterators.*;
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30 import com.oracle.graal.nodes.*;
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31
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32 public class IterationDirectiveTest extends GraalCompilerTest {
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33
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34 public static int loopFrequencySnippet(int arg) {
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35 int x = arg;
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36 while (GraalDirectives.injectIterationCount(128, x > 1)) {
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37 GraalDirectives.controlFlowAnchor(); // prevent loop peeling or unrolling
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38 if (x % 2 == 0) {
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39 x /= 2;
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40 } else {
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41 x = 3 * x + 1;
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42 }
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43 }
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44 return x;
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45 }
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46
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47 @Test
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48 public void testLoopFrequency() {
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49 test("loopFrequencySnippet", 7);
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50 }
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51
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52 @Override
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53 protected boolean checkLowTierGraph(StructuredGraph graph) {
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61d3cb8e1280 Add generic parameter to NodeClass. Change Graph#getNodes(Class) to Graph#getNodes(NodeClass).
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
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54 NodeIterable<LoopBeginNode> loopBeginNodes = graph.getNodes(LoopBeginNode.TYPE);
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55 Assert.assertEquals("LoopBeginNode count", 1, loopBeginNodes.count());
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56
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57 LoopBeginNode loopBeginNode = loopBeginNodes.first();
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58 Assert.assertEquals("loop frequency of " + loopBeginNode, 128, loopBeginNode.loopFrequency(), 0);
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59
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60 return true;
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61 }
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62 }