/*
* Copyright (c) 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
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*/
package com.oracle.max.vm.ext.graal;
import com.oracle.max.graal.compiler.phases.*;
import com.oracle.max.graal.compiler.util.*;
import com.oracle.max.graal.graph.*;
import com.oracle.max.graal.nodes.*;
import com.oracle.max.vm.ext.maxri.*;
import com.sun.cri.ci.*;
import com.sun.cri.ri.*;
public class FoldPhase extends Phase {
private final MaxRuntime runtime;
public FoldPhase(MaxRuntime runtime) {
this.runtime = runtime;
}
@Override
protected void run(StructuredGraph graph) {
for (Invoke invoke : graph.getInvokes()) {
RiResolvedMethod method = invoke.callTarget().targetMethod();
if (runtime.isFoldable(method)) {
NodeInputList<ValueNode> arguments = invoke.callTarget().arguments();
CiConstant[] constantArgs = new CiConstant[arguments.size()];
for (int i = 0; i < constantArgs.length; ++i) {
constantArgs[i] = arguments.get(i).asConstant();
}
CiConstant foldResult = runtime.fold(method, constantArgs);
if (foldResult != null) {
StructuredGraph foldGraph = new StructuredGraph();
foldGraph.start().setNext(foldGraph.add(new ReturnNode(ConstantNode.forCiConstant(foldResult, runtime, foldGraph))));
InliningUtil.inline(invoke, foldGraph, false);
}
}
}
// Canonicalize.
new CanonicalizerPhase(null, runtime, null).apply(graph);
}
}