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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package org.graalvm.compiler.nodes.spi;

import org.graalvm.compiler.core.common.spi.ArrayOffsetProvider;
import org.graalvm.compiler.graph.Node;
import org.graalvm.compiler.nodes.ValueNode;
import org.graalvm.compiler.nodes.memory.address.AddressNode;

import jdk.vm.ci.meta.JavaKind;

Provides a capability for replacing a higher node with one or more lower level nodes.
/**
 * Provides a capability for replacing a higher node with one or more lower level nodes.
 */
public interface LoweringProvider extends ArrayOffsetProvider {

    void lower(Node n, LoweringTool tool);

    
Reconstructs the array index from an address node that was created as a lowering of an
indexed access to an array.
Params:
elementKind – the JavaKind of the array elements
address – an AddressNode pointing to an element in an array
Returns:
a node that gives the index of the element/**
     * Reconstructs the array index from an address node that was created as a lowering of an
     * indexed access to an array.
     *
     * @param elementKind the {@link JavaKind} of the array elements
     * @param address an {@link AddressNode} pointing to an element in an array
     * @return a node that gives the index of the element
     */
    ValueNode reconstructArrayIndex(JavaKind elementKind, AddressNode address);

    
Indicates the smallest width for comparing an integer value on the target platform.
/**
     * Indicates the smallest width for comparing an integer value on the target platform.
     */
    default Integer smallestCompareWidth() {
        // most platforms only support 32 and 64 bit compares
        return 32;
    }
}