diff graal/Compiler/src/com/sun/c1x/ir/LoadIndexed.java @ 2507:9ec15d6914ca

Pull over of compiler from maxine repository.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 27 Apr 2011 11:43:22 +0200
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/Compiler/src/com/sun/c1x/ir/LoadIndexed.java	Wed Apr 27 11:43:22 2011 +0200
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+/*
+ * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.sun.c1x.ir;
+
+import com.sun.c1x.debug.*;
+import com.sun.c1x.value.*;
+import com.sun.cri.ci.*;
+import com.sun.cri.ri.*;
+
+/**
+ * The {@code LoadIndexed} instruction represents a read from an element of an array.
+ *
+ * @author Ben L. Titzer
+ */
+public final class LoadIndexed extends AccessIndexed {
+
+    /**
+     * Creates a new LoadIndexed instruction.
+     * @param array the instruction producing the array
+     * @param index the instruction producing the index
+     * @param length the instruction producing the length
+     * @param elementType the element type
+     * @param stateBefore the state before executing this instruction
+     */
+    public LoadIndexed(Value array, Value index, Value length, CiKind elementType, FrameState stateBefore) {
+        super(elementType.stackKind(), array, index, length, elementType, stateBefore);
+    }
+
+    /**
+     * Gets the declared type of this instruction's result.
+     * @return the declared type
+     */
+    @Override
+    public RiType declaredType() {
+        RiType arrayType = array().declaredType();
+        if (arrayType == null) {
+            return null;
+        }
+        return arrayType.componentType();
+    }
+
+    /**
+     * Gets the exact type of this instruction's result.
+     * @return the exact type
+     */
+    @Override
+    public RiType exactType() {
+        RiType declared = declaredType();
+        return declared != null && declared.isResolved() ? declared.exactType() : null;
+    }
+
+    @Override
+    public void accept(ValueVisitor v) {
+        v.visitLoadIndexed(this);
+    }
+
+    @Override
+    public void print(LogStream out) {
+        out.print(array()).print('[').print(index()).print("] (").print(kind.typeChar).print(')');
+    }
+}