public void visitInsn(final int opcode) {
switch (opcode) {
case Opcodes.ACONST_NULL :
recorder.add(new Runnable() {
public void run() {
block.addOp(new Load(lineNumber, new Constant(null, Type.OBJECT)));
}
});
break;
case Opcodes.ICONST_M1 :
case Opcodes.ICONST_0 :