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bpo-44525: Specialize simple Python calls. #29033

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Merged
markshannon merged 14 commits into from
Oct 20, 2021
Merged

bpo-44525: Specialize simple Python calls. #29033

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78b869e
Avoid making C calls for most calls to Python functions.
markshannon Oct 11, 2021
73041b5
Refactor a bit to help parsing of instructions.
markshannon Oct 13, 2021
5cc5442
Update gdb test to account for fewer C calls.
markshannon Oct 13, 2021
7c0f498
Change initialize_locals(steal=true) and _PyTuple_FromArraySteal to c…
markshannon Oct 14, 2021
03e7ad9
Fix compiler warnings on Windows.
markshannon Oct 14, 2021
82f5093
Rename labels and variable for clarity.
markshannon Oct 14, 2021
e4160c9
Add capability for specializing CALL_FUNCTION.
markshannon Oct 15, 2021
d5add72
Specialize for calls to simple Python functions with perfectly matchi…
markshannon Oct 15, 2021
1ef7132
Add CALL_FUNCTION to stats.
markshannon Oct 15, 2021
5dbedd8
Handle default arguments in CALL_FUNCTION_PY_SIMPLE.
markshannon Oct 18, 2021
265727f
Merge branch 'main' into specialize-call-py-simple
markshannon Oct 18, 2021
3195d70
Merge branch 'main' into specialize-call-py-simple
markshannon Oct 20, 2021
b844d55
Add NEWS.
markshannon Oct 20, 2021
6f1bfab
Tidy up news item.
markshannon Oct 20, 2021
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Refactor a bit to help parsing of instructions.
  • Loading branch information
@markshannon
markshannon committed Oct 13, 2021
commit 73041b5e7594f3ead689c766124f2eee08cef5e1
29 changes: 13 additions & 16 deletions Python/ceval.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1702,6 +1702,11 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, InterpreterFrame *frame, int thr
switch (opcode) {
#endif

/* Variables used for making calls */
PyObject *kwnames;
int nargs;
int stackadj;

/* BEWARE!
It is essential that any operation that fails must goto error
and that all operation that succeed call DISPATCH() ! */
Expand Down Expand Up @@ -4538,11 +4543,6 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, InterpreterFrame *frame, int thr
DISPATCH();
}

/* Declare variables used for making calls */
PyObject *kwnames;
int nargs;
int stackadj;

TARGET(CALL_METHOD) {
/* Designed to work in tamdem with LOAD_METHOD. */
/* `meth` is NULL when LOAD_METHOD thinks that it's not
Expand Down Expand Up @@ -4589,25 +4589,22 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, InterpreterFrame *frame, int thr
goto call_function;
}

TARGET(CALL_FUNCTION) {
PREDICTED(CALL_FUNCTION);
nargs = oparg;
kwnames = NULL;
stackadj = 1;
goto call_function;
}

TARGET(CALL_FUNCTION_KW) {
kwnames = POP();
nargs = oparg - PyTuple_GET_SIZE(kwnames);
stackadj = 1;
goto call_function;
}

call_function:
{
TARGET(CALL_FUNCTION) {
PREDICTED(CALL_FUNCTION);
PyObject *function;
nargs = oparg;
kwnames = NULL;
stackadj = 1;
call_function:
// Check if the call can be inlined or not
PyObject *function = PEEK(oparg + 1);
function = PEEK(oparg + 1);
if (Py_TYPE(function) == &PyFunction_Type && tstate->interp->eval_frame == NULL) {
int code_flags = ((PyCodeObject*)PyFunction_GET_CODE(function))->co_flags;
int is_generator = code_flags & (CO_GENERATOR | CO_COROUTINE | CO_ASYNC_GENERATOR);
Expand Down