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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)
This commit is contained in:
Victor Stinner 2017-01-11 00:54:57 +01:00
parent 434723f94c
commit 415c5107be
1 changed files with 4 additions and 2 deletions
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6
Python/ceval.c
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@ -36,7 +36,7 @@ extern int _PyObject_GetMethod(PyObject *, PyObject *, PyObject **);
typedef PyObject *(*callproc)(PyObject *, PyObject *, PyObject *); typedef PyObject *(*callproc)(PyObject *, PyObject *, PyObject *);
/* Forward declarations */ /* 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 * fast_function(PyObject *, PyObject **, Py_ssize_t, PyObject *);
static PyObject * do_call_core(PyObject *, PyObject *, PyObject *); static PyObject * do_call_core(PyObject *, PyObject *, PyObject *);
@ -4829,7 +4829,9 @@ if (tstate->use_tracing && tstate->c_profilefunc) { \
x = call; \ 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) call_function(PyObject ***pp_stack, Py_ssize_t oparg, PyObject *kwnames)
{ {
PyObject **pfunc = (*pp_stack) - oparg - 1; PyObject **pfunc = (*pp_stack) - oparg - 1;