diff -r cfc956f13ce2 Modules/_json.c
--- a/Modules/_json.c	Tue Nov 15 15:13:40 2016 +0100
+++ b/Modules/_json.c	Tue Nov 15 15:17:08 2016 +0100
@@ -394,7 +394,7 @@ static PyObject *
         Py_CLEAR(chunk); \
     }
 
-static PyObject *
+static PyObject* _Py_HOT_FUNCTION
 scanstring_unicode(PyObject *pystr, Py_ssize_t end, int strict, Py_ssize_t *next_end_ptr)
 {
     /* Read the JSON string from PyUnicode pystr.
diff -r cfc956f13ce2 Modules/sre_lib.h
--- a/Modules/sre_lib.h	Tue Nov 15 15:13:40 2016 +0100
+++ b/Modules/sre_lib.h	Tue Nov 15 15:17:08 2016 +0100
@@ -501,7 +501,7 @@ typedef struct {
 
 /* check if string matches the given pattern.  returns <0 for
    error, 0 for failure, and 1 for success */
-LOCAL(Py_ssize_t)
+LOCAL(Py_ssize_t) _Py_HOT_FUNCTION
 SRE(match)(SRE_STATE* state, SRE_CODE* pattern, int match_all)
 {
     SRE_CHAR* end = (SRE_CHAR *)state->end;
diff -r cfc956f13ce2 Objects/abstract.c
--- a/Objects/abstract.c	Tue Nov 15 15:13:40 2016 +0100
+++ b/Objects/abstract.c	Tue Nov 15 15:17:08 2016 +0100
@@ -1251,7 +1251,7 @@ PyNumber_Index(PyObject *item)
 
 /* Return an error on Overflow only if err is not NULL*/
 
-Py_ssize_t
+Py_ssize_t _Py_HOT_FUNCTION
 PyNumber_AsSsize_t(PyObject *item, PyObject *err)
 {
     Py_ssize_t result;
diff -r cfc956f13ce2 Objects/unicodeobject.c
--- a/Objects/unicodeobject.c	Tue Nov 15 15:13:40 2016 +0100
+++ b/Objects/unicodeobject.c	Tue Nov 15 15:17:08 2016 +0100
@@ -2152,7 +2152,7 @@ align_maxchar(Py_UCS4 maxchar)
         return MAX_UNICODE;
 }
 
-static PyObject*
+static PyObject* _Py_HOT_FUNCTION
 _PyUnicode_FromUCS1(const Py_UCS1* u, Py_ssize_t size)
 {
     PyObject *res;
diff -r cfc956f13ce2 Python/pyhash.c
--- a/Python/pyhash.c	Tue Nov 15 15:13:40 2016 +0100
+++ b/Python/pyhash.c	Tue Nov 15 15:17:08 2016 +0100
@@ -364,7 +364,7 @@ static PyHash_FuncDef PyHash_Func = {fnv
     HALF_ROUND(v2,v1,v0,v3,17,21);
 
 
-static Py_hash_t
+static Py_hash_t _Py_HOT_FUNCTION
 siphash24(const void *src, Py_ssize_t src_sz) {
     uint64_t k0 = _le64toh(_Py_HashSecret.siphash.k0);
     uint64_t k1 = _le64toh(_Py_HashSecret.siphash.k1);