--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cgen/templates/FastPyFunctionDerivative	Thu Apr 26 11:08:47 2012 -0700
@@ -0,0 +1,66 @@
+<%namespace file="base.impl" import="*"/>\
+
+    TARGET(FAST_PYFUN_${ arity_str(instr) })
+    {
+        if (oparg != ${ instr.arity() }) goto TARGET_CALL_FUNCTION_SKIP_DISPATCH;
+
+        % for operand,accessor in get_enumerated_args(instr.arity()):
+        ${operand}= ${accessor}();
+        % endfor
+
+        ## deal with ic misses...
+        % if config.create_inca_guards:
+        /* guard against inline cache misses */
+        if (! (!(PyMethod_Check(v) && PyMethod_GET_SELF(v) != NULL) && PyFunction_Check(v))) {
+            ${ dbg_inf_ic_miss(instr) }
+            goto TARGET_CALL_FUNCTION_SKIP_DISPATCH;
+        } // if
+        PyCodeObject *code= (PyCodeObject*)PyFunction_GET_CODE(v);
+        if (code->co_argcount != ${ instr.arity() }) {
+            ${ dbg_inf_ic_miss(instr) }
+            goto TARGET_CALL_FUNCTION_SKIP_DISPATCH;
+        } // if
+	    if (! (code->co_flags == (CO_OPTIMIZED | CO_NEWLOCALS | CO_NOFREE))) {
+            ${ dbg_inf_ic_miss(instr) }
+            goto TARGET_CALL_FUNCTION_SKIP_DISPATCH;
+        } // if
+        % else:
+        /* guard against inline cache misses OMITTED */
+        % endif
+        ${ dbg_inf_ic_hit(instr) }
+
+        % if instr.arity() > 0:
+        STACKADJ(-${ instr.arity() });
+        % endif
+        PyObject *globals= PyFunction_GET_GLOBALS(v);
+        PyThreadState *tstate= PyThreadState_GET();
+        PyFrameObject *callee_frame= PyFrame_New( tstate, code, globals, NULL );
+        if (callee_frame == NULL) {
+            SET_TOP((PyObject*)NULL);
+            break;
+        } // if
+
+        ## pass arguments...
+        <%
+           i= 0
+           revargs= get_enumerated_args(instr.arity())
+           revargs.reverse()
+         %>\
+        % for operand, accessor in revargs:
+          % if operand != 'v':
+        callee_frame->f_localsplus[${i}]= ${ operand };
+            <% i+= 1 %>\
+          % endif
+        % endfor
+
+        x= PyEval_EvalFrameEx(callee_frame, 0);
+
+        ++tstate->recursion_depth;
+        Py_DECREF(callee_frame);
+        --tstate->recursion_depth;
+
+        ${ push_result() }
+        ${ dispatch() }
+    }
+
+