/*
 * Copyright (c) 2009 Sun Microsystems, Inc. All rights reserved.
 *
 * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product that is
 * described in this document. In particular, and without limitation, these intellectual property rights may include one
 * or more of the U.S. patents listed at http://www.sun.com/patents and one or more additional patents or pending patent
 * applications in the U.S. and in other countries.
 *
 * U.S. Government Rights - Commercial software. Government users are subject to the Sun Microsystems, Inc. standard
 * license agreement and applicable provisions of the FAR and its supplements.
 *
 * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or registered
 * trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks are used under license and
 * are trademarks or registered trademarks of SPARC International, Inc. in the U.S. and other countries.
 *
 * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open Company, Ltd.
 */
package com.sun.hotspot.c1x;

import com.sun.c1x.C1XCompiler;
import com.sun.c1x.C1XOptions;
import com.sun.c1x.target.amd64.AMD64;
import com.sun.cri.ci.CiCompiler;
import com.sun.cri.ci.CiTarget;
import com.sun.cri.ri.RiRegisterConfig;
import com.sun.cri.xir.RiXirGenerator;

/**
 *
 * @author Thomas Wuerthinger
 *
 *         Singleton class holding the instance of the C1XCompiler.
 *
 */
public class Compiler {

    private static CiCompiler compiler;

    public static CiCompiler getCompiler() {

        if (compiler == null) {
            compiler = createCompiler();
        }

        return compiler;
    }

    private static CiCompiler createCompiler() {

        final HotSpotVMConfig config = VMEntries.getConfiguration();
        final HotSpotRuntime runtime = new HotSpotRuntime(config);
        final RiXirGenerator generator = new HotSpotXirGenerator(config);
        final int wordSize = 8;
        final int stackFrameAlignment = 8;
        final int pageSize = 1024;
        final RiRegisterConfig registerConfig = new HotSpotRegisterConfig(config);
        final CiTarget target = new CiTarget(new AMD64(), registerConfig, true, wordSize, wordSize, wordSize, stackFrameAlignment, pageSize, wordSize, wordSize, 16);
        final CiCompiler compiler = new C1XCompiler(runtime, target, generator);

        C1XOptions.setOptimizationLevel(3);
        C1XOptions.TraceBytecodeParserLevel = 4;
        C1XOptions.PrintCFGToFile = false;
        C1XOptions.PrintAssembly = false;// true;
        C1XOptions.PrintCompilation = true;
        return compiler;

    }
}