Mercurial > hg > graal-jvmci-8
annotate graal/Compiler/src/com/sun/c1x/ir/StackAllocate.java @ 2507:9ec15d6914ca
Pull over of compiler from maxine repository.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 11:43:22 +0200 |
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1 /* |
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2 * Copyright (c) 2010, 2011, 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.sun.c1x.ir; |
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24 |
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25 import com.sun.c1x.debug.*; |
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26 import com.sun.cri.bytecode.*; |
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27 import com.sun.cri.ci.*; |
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28 |
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29 /** |
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30 * Instruction implementing the semantics of {@link Bytecodes#ALLOCA}. |
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31 * |
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32 * @author Doug Simon |
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33 */ |
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34 public final class StackAllocate extends Instruction { |
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35 |
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36 private Value size; |
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37 |
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38 /** |
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39 * Creates a new StackAllocate instance. |
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40 */ |
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41 public StackAllocate(Value size) { |
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42 super(CiKind.Word); |
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43 this.size = size; |
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44 setFlag(Flag.NonNull); |
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45 eliminateNullCheck(); |
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46 } |
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47 |
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48 @Override |
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49 public void accept(ValueVisitor v) { |
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50 v.visitStackAllocate(this); |
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51 } |
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52 |
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53 @Override |
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54 public void inputValuesDo(ValueClosure closure) { |
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55 size = closure.apply(size); |
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56 } |
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57 |
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58 /** |
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59 * Gets the instruction that produced the size argument. |
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60 */ |
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61 public Value size() { |
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62 return size; |
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63 } |
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64 |
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65 @Override |
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66 public void print(LogStream out) { |
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67 out.print("alloca(").print(size).print(")"); |
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68 } |
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69 } |