Mercurial > hg > graal-compiler

annotate src/share/vm/ci/ciObjArray.cpp @ 1941:79d04223b8a5

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Added caching for resolved types and resolved fields. This is crucial, because the local load elimination will lead to wrong results, if field equality (of two RiField objects with the same object and the same RiType) is not given. The caching makes sure that the default equals implementation is sufficient.
author Thomas Wuerthinger <wuerthinger@ssw.jku.at>
date Tue, 28 Dec 2010 18:33:26 +0100
parents c18cbe5936b8
children f95d63e2154a
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1 /*
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2 * Copyright (c) 1999, 2007, 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
ff5961f4c095 6395208: Elide autoboxing for calls to HashMap.get(int) and HashMap.get(long)
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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 */
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25 #include "incls/_precompiled.incl"
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26 #include "incls/_ciObjArray.cpp.incl"
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28 // ciObjArray
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29 //
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30 // This class represents an objArrayOop in the HotSpot virtual
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31 // machine.
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33 ciObject* ciObjArray::obj_at(int index) {
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34 VM_ENTRY_MARK;
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35 objArrayOop array = get_objArrayOop();
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36 if (index < 0 || index >= array->length()) return NULL;
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37 oop o = array->obj_at(index);
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38 if (o == NULL) {
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39 return ciNullObject::make();
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40 } else {
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41 return CURRENT_ENV->get_object(o);
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42 }
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43 }