/*
 * Copyright (c) 2009, 2012, 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.oracle.graal.compiler.amd64;

import com.oracle.graal.amd64.*;
import com.oracle.graal.api.code.*;
import com.oracle.graal.api.meta.*;
import com.oracle.graal.compiler.gen.*;
import com.oracle.graal.lir.*;
import com.oracle.graal.lir.amd64.*;
import com.oracle.graal.nodes.*;
import com.oracle.graal.nodes.calc.*;

public abstract class AMD64NodeLIRGenerator extends NodeLIRGenerator {

    public AMD64NodeLIRGenerator(StructuredGraph graph, CallingConvention cc, LIRGenerationResult res, LIRGenerator gen) {
        super(graph, cc, res, gen);
    }

    @Override
    protected void emitIndirectCall(IndirectCallTargetNode callTarget, Value result, Value[] parameters, Value[] temps, LIRFrameState callState) {
        AllocatableValue targetAddress = AMD64.rax.asValue();
        gen.emitMove(targetAddress, operand(callTarget.computedAddress()));
        append(new AMD64Call.IndirectCallOp(callTarget.target(), result, parameters, temps, targetAddress, callState));
    }

    @Override
    public void emitNullCheck(ValueNode v, DeoptimizingNode deopt) {
        assert v.getKind() == Kind.Object : v + " - " + v.stamp() + " @ " + deopt;
        append(new AMD64Move.NullCheckOp(gen.load(operand(v)), state(deopt)));
    }

    @Override
    protected boolean peephole(ValueNode valueNode) {
        if ((valueNode instanceof IntegerDivNode) || (valueNode instanceof IntegerRemNode)) {
            FixedBinaryNode divRem = (FixedBinaryNode) valueNode;
            FixedNode node = divRem.next();
            while (node instanceof FixedWithNextNode) {
                FixedWithNextNode fixedWithNextNode = (FixedWithNextNode) node;
                if (((fixedWithNextNode instanceof IntegerDivNode) || (fixedWithNextNode instanceof IntegerRemNode)) && fixedWithNextNode.getClass() != divRem.getClass()) {
                    FixedBinaryNode otherDivRem = (FixedBinaryNode) fixedWithNextNode;
                    if (otherDivRem.x() == divRem.x() && otherDivRem.y() == divRem.y() && operand(otherDivRem) == null) {
                        Value[] results = ((AMD64LIRGenerator) gen).emitIntegerDivRem(operand(divRem.x()), operand(divRem.y()), (DeoptimizingNode) valueNode);
                        if (divRem instanceof IntegerDivNode) {
                            setResult(divRem, results[0]);
                            setResult(otherDivRem, results[1]);
                        } else {
                            setResult(divRem, results[1]);
                            setResult(otherDivRem, results[0]);
                        }
                        return true;
                    }
                }
                node = fixedWithNextNode.next();
            }
        }
        return false;
    }

    @Override
    public void visitBreakpointNode(BreakpointNode node) {
        JavaType[] sig = new JavaType[node.arguments().size()];
        for (int i = 0; i < sig.length; i++) {
            sig[i] = node.arguments().get(i).stamp().javaType(gen.getMetaAccess());
        }

        Value[] parameters = visitInvokeArguments(res.getFrameMap().registerConfig.getCallingConvention(CallingConvention.Type.JavaCall, null, sig, gen.target(), false), node.arguments());
        append(new AMD64BreakpointOp(parameters));
    }

    @Override
    public void visitInfopointNode(InfopointNode i) {
        append(new InfopointOp(stateFor(i.getState()), i.reason));
    }
}