/*
 * 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 HotSpotRuntime runtime = new HotSpotRuntime();
		final RiXirGenerator generator = new HotSpotXirGenerator();
		final int wordSize = 8;
		final int stackFrameAlignment = 8;
		final int pageSize = 1024;
		final RiRegisterConfig config = new HotSpotRegisterConfig(System.getProperty("os.name").startsWith("Windows"));
        final CiTarget target = new CiTarget(new AMD64(), config, 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;
        
	}
}