/*
* Copyright (c) 2014, 2014, 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
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*/
package org.graalvm.compiler.nodes.spi;
import org.graalvm.compiler.graph.Node;
import org.graalvm.compiler.nodes.ValueNode;
import jdk.vm.ci.meta.Value;
public interface NodeValueMap {
Returns the operand that has been previously initialized by setResult(ValueNode, Value) with the result of an instruction. It's a code generation error to ask for the operand of ValueNode that doesn't have one yet. Params: - node – A node that produces a result value.
/**
* Returns the operand that has been previously initialized by
* {@link #setResult(ValueNode, Value)} with the result of an instruction. It's a code
* generation error to ask for the operand of ValueNode that doesn't have one yet.
*
* @param node A node that produces a result value.
*/
Value operand(Node node);
Returns: true if there is an operand associated with the node in the current block.
/**
* @return {@code true} if there is an {@link Value operand} associated with the {@code node} in
* the current block.
*/
boolean hasOperand(Node node);
Associates operand with the node in the current block. Returns: operand
/**
* Associates {@code operand} with the {@code node} in the current block.
*
* @return {@code operand}
*/
Value setResult(ValueNode node, Value operand);
/**
* Gets the {@link ValueNode} that produced a {@code value}. If the {@code value} is not
* associated with a {@link ValueNode} {@code null} is returned.
*
* This method is intended for debugging purposes only.
*/
ValueNode valueForOperand(Value value);
}