From 415c5107be9873aba3a0619d7bf5096cfb5b087e Mon Sep 17 00:00:00 2001 From: Victor Stinner Date: Wed, 11 Jan 2017 00:54:57 +0100 Subject: [PATCH] Inline call_function() Issue #29227: Inline call_function() into _PyEval_EvalFrameDefault() using Py_LOCAL_INLINE to reduce the stack consumption. It reduces the stack consumption, bytes per call, before => after: test_python_call: 1152 => 1040 (-112 B) test_python_getitem: 1008 => 976 (-32 B) test_python_iterator: 1232 => 1120 (-112 B) => total: 3392 => 3136 (- 256 B) --- Python/ceval.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/Python/ceval.c b/Python/ceval.c index cd956429237..f86f6aafdc0 100644 --- a/Python/ceval.c +++ b/Python/ceval.c @@ -36,7 +36,7 @@ extern int _PyObject_GetMethod(PyObject *, PyObject *, PyObject **); typedef PyObject *(*callproc)(PyObject *, PyObject *, PyObject *); /* Forward declarations */ -static PyObject * call_function(PyObject ***, Py_ssize_t, PyObject *); +Py_LOCAL_INLINE(PyObject *) call_function(PyObject ***, Py_ssize_t, PyObject *); static PyObject * fast_function(PyObject *, PyObject **, Py_ssize_t, PyObject *); static PyObject * do_call_core(PyObject *, PyObject *, PyObject *); @@ -4829,7 +4829,9 @@ if (tstate->use_tracing && tstate->c_profilefunc) { \ x = call; \ } -static PyObject* _Py_HOT_FUNCTION +/* Issue #29227: Inline call_function() into _PyEval_EvalFrameDefault() + to reduce the stack consumption. */ +Py_LOCAL_INLINE(PyObject *) _Py_HOT_FUNCTION call_function(PyObject ***pp_stack, Py_ssize_t oparg, PyObject *kwnames) { PyObject **pfunc = (*pp_stack) - oparg - 1;