diff -r 87d76ce01217 Include/pyport.h
--- a/Include/pyport.h	Fri Nov 04 17:07:47 2016 -0400
+++ b/Include/pyport.h	Sat Nov 05 01:07:42 2016 +0100
@@ -497,6 +497,24 @@ extern "C" {
 #define Py_DEPRECATED(VERSION_UNUSED)
 #endif
 
+
+/* Py_HOT_FUNCTION
+ * The hot attribute on a function is used to inform the compiler that the
+ * function is a hot spot of the compiled program. The function is optimized
+ * more aggressively and on many target it is placed into special subsection of
+ * the text section so all hot functions appears close together improving
+ * locality.
+ *
+ * Usage:
+ *    int Py_HOT_FUNCTION x() { return 3 }
+ */
+#if defined(__GNUC__) && ((__GNUC__ >= 5) || \
+              (__GNUC__ == 4) && (__GNUC_MINOR__ >= 3))
+#define Py_HOT_FUNCTION __attribute__((hot))
+#else
+#define Py_HOT_FUNCTION
+#endif
+
 /**************************************************************************
 Prototypes that are missing from the standard include files on some systems
 (and possibly only some versions of such systems.)
diff -r 87d76ce01217 Objects/dictobject.c
--- a/Objects/dictobject.c	Fri Nov 04 17:07:47 2016 -0400
+++ b/Objects/dictobject.c	Sat Nov 05 01:07:42 2016 +0100
@@ -871,7 +871,7 @@ lookdict_unicode(PyDictObject *mp, PyObj
 
 /* Faster version of lookdict_unicode when it is known that no <dummy> keys
  * will be present. */
-static Py_ssize_t
+static Py_ssize_t Py_HOT_FUNCTION
 lookdict_unicode_nodummy(PyDictObject *mp, PyObject *key,
                          Py_hash_t hash, PyObject ***value_addr,
                          Py_ssize_t *hashpos)
diff -r 87d76ce01217 Objects/frameobject.c
--- a/Objects/frameobject.c	Fri Nov 04 17:07:47 2016 -0400
+++ b/Objects/frameobject.c	Sat Nov 05 01:07:42 2016 +0100
@@ -409,7 +409,7 @@ static int numfree = 0;         /* numbe
 /* max value for numfree */
 #define PyFrame_MAXFREELIST 200
 
-static void
+static void Py_HOT_FUNCTION
 frame_dealloc(PyFrameObject *f)
 {
     PyObject **p, **valuestack;
@@ -605,7 +605,7 @@ int _PyFrame_Init()
     return 1;
 }
 
-PyFrameObject *
+PyFrameObject* Py_HOT_FUNCTION
 PyFrame_New(PyThreadState *tstate, PyCodeObject *code, PyObject *globals,
             PyObject *locals)
 {
diff -r 87d76ce01217 Python/ceval.c
--- a/Python/ceval.c	Fri Nov 04 17:07:47 2016 -0400
+++ b/Python/ceval.c	Sat Nov 05 01:07:42 2016 +0100
@@ -718,7 +718,7 @@ PyEval_EvalFrameEx(PyFrameObject *f, int
     return tstate->interp->eval_frame(f, throwflag);
 }
 
-PyObject *
+PyObject* Py_HOT_FUNCTION
 _PyEval_EvalFrameDefault(PyFrameObject *f, int throwflag)
 {
 #ifdef DXPAIRS
@@ -4771,7 +4771,7 @@ if (tstate->use_tracing && tstate->c_pro
     x = call; \
     }
 
-static PyObject *
+static PyObject* Py_HOT_FUNCTION
 call_function(PyObject ***pp_stack, Py_ssize_t oparg, PyObject *kwnames)
 {
     PyObject **pfunc = (*pp_stack) - oparg - 1;
@@ -4844,7 +4844,7 @@ call_function(PyObject ***pp_stack, Py_s
    done before evaluating the frame.
 */
 
-static PyObject*
+static PyObject* Py_HOT_FUNCTION
 _PyFunction_FastCall(PyCodeObject *co, PyObject **args, Py_ssize_t nargs,
                      PyObject *globals)
 {