Generate ND indexing functions on demand in JIT. * src/jit-typeinfo.cc (jit_operation::~jit_operation, jit_operation::do_generate, jit_operation::generate, jit_operation::signature_cmp::operator()): New function. (jit_operation::overload): Call do_generate when lookup fails. (jit_index_operation, jit_paren_subsref, jit_paren_subsasgn): New class. (jit_typeinfo::jit_typeinfo): Update to use jit_paren_subsref and jit_paren_subsasgn. (jit_typeinfo::gen_subsref, jit_typeinfo::gen_subsasgn): Removed functions. * src/jit-typeinfo.h (jit_operation::~jit_operation, jit_operation::generate, jit_operation::do_generate): New declaration. (jit_operation::add_overload, jit_operation::overload, jit_operation::result, jit_operation::to_idx): Use signature_vec typedef. (jit_operation::singature_cmp): New class. (jit_index_operation, jit_paren_subsref, jit_paren_subsasgn): New class. (jit_typeinfo::get_scalar_ptr): Nwe function. (jit_typeinfo::gen_subsref, jit_typeinfo::gen_subsasgn): Removed declaration. * src/pt-jit.cc: New test.

#include <octave/oct.h>

DEFUN_DLD (helloworld, args, nargout,
  "Hello World Help String")
{
  int nargin = args.length ();
  octave_stdout << "Hello World has " << nargin
        << " input arguments and "
        << nargout << " output arguments.\n";
  return octave_value_list ();
}