JIT compile anonymous functions * jit-ir.h (jit_block::front, jit_block::back): New function. (jit_call::jit_call): New overloads. (jit_return): New class. * jit-typeinfo.cc (octave_jit_create_undef): New function. (jit_operation::to_idx): Correctly handle empty type vector. (jit_typeinfo::jit_typeinfo): Add destroy_fn and initialize create_undef. * jit-typeinfo.h (jit_typeinfo::get_any_ptr, jit_typeinfo::destroy, jit_typeinfo::create_undef): New function. * pt-jit.cc (jit_convert::jit_convert): Add overload and refactor. (jit_convert::initialize, jit_convert_llvm::convert_loop, jit_convert_llvm::convert_function, tree_jit::do_execute, jit_function_info::jit_function_info, jit_function_info::execute, jit_function_info::match): New function. (jit_convert::get_variable): Support function variable lookup. (jit_convert_llvm::convert): Handle loop/function agnostic stuff. (jit_convert_llvm::visit): Handle function creation as well. (tree_jit::execute): Move implementation to tree_jit::do_execute. (jit_info::compile): Call convert_loop instead of convert. * pt-jit.h (jit_convert::jit_convert): New overload. (jit_convert::initialize, jit_convert_llvm::convert_loop, jit_convert_llvm::convert_function, tree_jit::do_execute): New function. (jit_convert::create_variable, jit_convert_llvm::initialize): Update signature. (tree_jit::execute): Made static. (tree_jit::tree_jit): Made private. (jit_function_info): New class. * ov-usr-fcn.cc (octave_user_function::~octave_user_function): Delete jit_info. (octave_user_function::octave_user_function): Maybe JIT and use is_special_expr and special_expr. (octave_user_function::special_expr): New function. * ov-usr-fcn.h (octave_user_function::is_special_expr, octave_user_function::special_expr, octave_user_function::get_info, octave_user_function::stash_info): New function. * pt-decl.h (tree_decl_elt::name): New function. * pt-eval.cc (tree_evaluator::visit_simple_for_command, tree_evaluator::visit_while_command): Use static tree_jit methods.

--- a/libinterp/interp-core/jit-typeinfo.h	Sat Sep 08 18:47:29 2012 -0700
+++ b/libinterp/interp-core/jit-typeinfo.h	Sun Sep 09 00:29:00 2012 -0600
@@ -452,6 +452,8 @@
 
   static jit_type *get_scalar_ptr (void) { return instance->scalar_ptr; }
 
+  static jit_type *get_any_ptr (void) { return instance->any_ptr; }
+
   static jit_type *get_range (void) { return instance->range; }
 
   static jit_type *get_string (void) { return instance->string; }
@@ -498,6 +500,11 @@
     return instance->release_fn.overload (type);
   }
 
+  static const jit_operation& destroy (void)
+  {
+    return instance->destroy_fn;
+  }
+
   static const jit_operation& print_value (void)
   {
     return instance->print_fn;
@@ -563,6 +570,11 @@
   {
     return instance->do_end (value, index, count);
   }
+
+  static const jit_operation& create_undef (void)
+  {
+    return instance->create_undef_fn;
+  }
 private:
   jit_typeinfo (llvm::Module *m, llvm::ExecutionEngine *e);
 
@@ -751,6 +763,7 @@
   std::vector<jit_operation> unary_ops;
   jit_operation grab_fn;
   jit_operation release_fn;
+  jit_operation destroy_fn;
   jit_operation print_fn;
   jit_operation for_init_fn;
   jit_operation for_check_fn;
@@ -761,6 +774,7 @@
   jit_paren_subsasgn paren_subsasgn_fn;
   jit_operation end1_fn;
   jit_operation end_fn;
+  jit_operation create_undef_fn;
 
   jit_function any_call;