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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/DimensionsNode.java @ 11698:4eec2ac671c2

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Refactor the WordTypeVerificationPhase to use fewer graph iterations, and invoke it a fewer places
author Christian Wimmer <christian.wimmer@oracle.com>
date Tue, 17 Sep 2013 18:36:54 -0700
parents 9ee5f3bfa755
children fcabc0da42b0
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1 /*
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2 * Copyright (c) 2012, 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.hotspot.nodes;
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24
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25 import com.oracle.graal.api.code.*;
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26 import com.oracle.graal.api.meta.*;
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27 import com.oracle.graal.compiler.gen.*;
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28 import com.oracle.graal.compiler.target.*;
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29 import com.oracle.graal.nodes.*;
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30 import com.oracle.graal.word.*;
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32 /**
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33 * Intrinsic for allocating an on-stack array of integers to hold the dimensions of a multianewarray
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34 * instruction.
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35 */
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36 public final class DimensionsNode extends FixedWithNextNode implements LIRGenLowerable {
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37
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38 private final int rank;
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39
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40 private DimensionsNode(int rank) {
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41 super(null);
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42 this.rank = rank;
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43 }
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44
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45 @Override
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46 public void generate(LIRGenerator gen) {
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47 int size = rank * 4;
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48 StackSlot array = gen.frameMap().allocateStackBlock(size, false);
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49 Value result = gen.emitAddress(array);
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50 gen.setResult(this, result);
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51 }
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52
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53 @NodeIntrinsic(setStampFromReturnType = true)
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54 public static native Word allocaDimsArray(@ConstantNodeParameter int rank);
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55 }