navyxliu/RelockInDeopt.java

## RelockInDeopt.java
//  java -XX:CompileCommand=quiet -XX:CompileCommand=compileonly,RelockInDeopt::snippet2 -XX:-TieredCompilation -XX:-UseOnStackReplacement -XX:+PrintCompilation -XX:+TraceDeoptimization -XX:+PrintEliminateLocks -XX:+PrintDeoptimizationDetails -XX:-PrintInlining -Xbatch -XX:+PrintEliminateAllocations RelockInDeopt
class RelockInDeopt {
        static int staticInt = 0;
        static Object staticObj = null;

        public static void snippet2() {
         Object escaped = new Object();
         Object nonEscaped = new Object();

                 synchronized (nonEscaped) {
                         synchronized (escaped) {
                                staticObj = escaped;
                                staticInt++;

                                if (staticInt >= 9_999) {
                                        staticObj = null; // deoptimize
                                }
                         }
                 }
    }

    public static void main(String[] args)  {
        var kase = new RelockInDeopt();

        for (int i = 0; i < 10_000; ++i) {
                        snippet2();
        }
    }
}
	// java -XX:CompileCommand=quiet -XX:CompileCommand=compileonly,RelockInDeopt::snippet2 -XX:-TieredCompilation -XX:-UseOnStackReplacement -XX:+PrintCompilation -XX:+TraceDeoptimization -XX:+PrintEliminateLocks -XX:+PrintDeoptimizationDetails -XX:-PrintInlining -Xbatch -XX:+PrintEliminateAllocations RelockInDeopt
	class RelockInDeopt {
	static int staticInt = 0;
	static Object staticObj = null;

	public static void snippet2() {
	Object escaped = new Object();
	Object nonEscaped = new Object();

	synchronized (nonEscaped) {
	synchronized (escaped) {
	staticObj = escaped;
	staticInt++;

	if (staticInt >= 9_999) {
	staticObj = null; // deoptimize
	}
	}
	}
	}

	public static void main(String[] args) {
	var kase = new RelockInDeopt();

	for (int i = 0; i < 10_000; ++i) {
	snippet2();
	}
	}
	}