So you mean a custom JIT, no the JIT of the JVM.

you can get that knowledge by a flow analysis I think.

generate static code and add a check. Something like (pseudocode):

Object a,b; if (Integer#plus(Integer) is default) { int b' = 10 int a' = b'+2 b = new Integer(b') a = new Integer(a') } else {

Class class1 = org.codehaus.groovy.trace.Demo.class;

b = new Integer(10);

a = ScriptBytecodeAdapter.invokeMethodN(class1, b, "plus", new Object[] { new Integer(2) }); }

which of course would be much faster, than what we currently have.But I am not sure there is a way for a JIT we write to get all these informations... like what method will be called in the end.. for 2.0I plan to let the MetaClass return the method it will call instead of calling the method directly. In that a case JIT would have an much more easy job here.