INCA: Inline Caching meets Quickening in Python 3.3

cgen/templates/inlined/PyLong_Type

+%if instr.function_id in ['nb_add', 'nb_multiply', 'nb_subtract']:
+<% inlined= True %>
+<%text>\
+#define MEDIUM_VALUE(x) (Py_SIZE(x) < 0 ? -(sdigit)((PyLongObject*)x)->ob_digit[0] :    \
+                         (Py_SIZE(x) == 0 ? (sdigit)0 :                 \
+                          (sdigit)((PyLongObject*)x)->ob_digit[0]))
+
+#define ABS(x) ((x) < 0 ? -(x) : (x))
+</%text>\
+
+  % if instr.function_id == 'nb_add':
+        if (ABS(Py_SIZE(v)) <= 1 && ABS(Py_SIZE(w)) <= 1)
+            x = PyLong_FromLong(MEDIUM_VALUE(v) +
+                                MEDIUM_VALUE(w));
+        else
+            x= PyLong_Type.tp_as_number->nb_add(v, w);
+  % elif instr.function_id == 'nb_multiply':
+        if (ABS(Py_SIZE(v)) <= 1 && ABS(Py_SIZE(w)) <= 1) {
+            stwodigits temp = (stwodigits)(MEDIUM_VALUE(v)) * MEDIUM_VALUE(w);
+#ifdef HAVE_LONG_LONG
+            x= PyLong_FromLongLong((PY_LONG_LONG)temp);
+#else
+            if (temp >= LONG_MIN && temp <= LONG_MAX)
+                x= PyLong_FromLong((long)temp);
+#endif
+        }
+        else
+            x= PyLong_Type.tp_as_number->nb_multiply(v, w);
+  % elif instr.function_id == 'nb_subtract':
+        if (ABS(Py_SIZE(v)) <= 1 && ABS(Py_SIZE(w)) <= 1)
+            x = PyLong_FromLong(MEDIUM_VALUE(v)-MEDIUM_VALUE(w));
+        else
+            x= PyLong_Type.tp_as_number->nb_subtract(v, w);
+  % endif
+
+#undef MEDIUM_VALUE
+#undef ABS
+% elif instr.function_id in ['nb_true_divide']:
+        x= PyLong_Type.tp_as_number->nb_true_divide(v, w);
+%endif