Skip to content

GH-98831: Auto-generate PREDICTED() macro calls#99102

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
gvanrossum merged 2 commits into from
Nov 4, 2022
Merged

GH-98831: Auto-generate PREDICTED() macro calls #99102

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
47d77ac
Auto-generate PREDICTED() macro calls
gvanrossum Nov 4, 2022
15b78f0
use non capturing group
gvanrossum Nov 4, 2022
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
16 changes: 0 additions & 16 deletions Python/bytecodes.c
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -112,7 +112,6 @@ dummy_func(

// stack effect: ( -- __0)
inst(LOAD_CONST){
PREDICTED(LOAD_CONST);
PyObject *value = GETITEM(consts, oparg);
Py_INCREF(value);
PUSH(value);
Expand DownExpand Up@@ -431,7 +430,6 @@ dummy_func(

// stack effect: (__0 -- )
inst(BINARY_SUBSCR){
PREDICTED(BINARY_SUBSCR);
PyObject *sub = POP();
PyObject *container = TOP();
PyObject *res = PyObject_GetItem(container, sub);
Expand DownExpand Up@@ -631,7 +629,6 @@ dummy_func(

// stack effect: (__0, __1, __2 -- )
inst(STORE_SUBSCR){
PREDICTED(STORE_SUBSCR);
PyObject *sub = TOP();
PyObject *container = SECOND();
PyObject *v = THIRD();
Expand DownExpand Up@@ -884,7 +881,6 @@ dummy_func(

// stack effect: ( -- )
inst(GET_AWAITABLE){
PREDICTED(GET_AWAITABLE);
PyObject *iterable = TOP();
PyObject *iter = _PyCoro_GetAwaitableIter(iterable);

Expand DownExpand Up@@ -1204,7 +1200,6 @@ dummy_func(

// stack effect: (__0 -- __array[oparg])
inst(UNPACK_SEQUENCE){
PREDICTED(UNPACK_SEQUENCE);
PyObject *seq = POP();
PyObject **top = stack_pointer + oparg;
if (!unpack_iterable(tstate, seq, oparg, -1, top)){
Expand DownExpand Up@@ -1290,7 +1285,6 @@ dummy_func(

// stack effect: (__0, __1 -- )
inst(STORE_ATTR){
PREDICTED(STORE_ATTR);
PyObject *name = GETITEM(names, oparg);
PyObject *owner = TOP();
PyObject *v = SECOND();
Expand DownExpand Up@@ -1407,7 +1401,6 @@ dummy_func(

// error: LOAD_GLOBAL has irregular stack effect
inst(LOAD_GLOBAL){
PREDICTED(LOAD_GLOBAL);
int push_null = oparg & 1;
PEEK(0) = NULL;
PyObject *name = GETITEM(names, oparg>>1);
Expand DownExpand Up@@ -1871,7 +1864,6 @@ dummy_func(

// error: LOAD_ATTR has irregular stack effect
inst(LOAD_ATTR){
PREDICTED(LOAD_ATTR);
PyObject *name = GETITEM(names, oparg >> 1);
PyObject *owner = TOP();
if (oparg & 1){
Expand DownExpand Up@@ -2276,7 +2268,6 @@ dummy_func(

// stack effect: (__0 -- )
inst(COMPARE_OP){
PREDICTED(COMPARE_OP);
assert(oparg <= Py_GE);
PyObject *right = POP();
PyObject *left = TOP();
Expand DownExpand Up@@ -2539,15 +2530,13 @@ dummy_func(

// stack effect: ( -- )
inst(JUMP_BACKWARD){
PREDICTED(JUMP_BACKWARD);
assert(oparg < INSTR_OFFSET());
JUMPBY(-oparg);
CHECK_EVAL_BREAKER();
}

// stack effect: (__0 -- )
inst(POP_JUMP_IF_FALSE){
PREDICTED(POP_JUMP_IF_FALSE);
PyObject *cond = POP();
if (Py_IsTrue(cond)){
_Py_DECREF_NO_DEALLOC(cond);
Expand DownExpand Up@@ -2788,7 +2777,6 @@ dummy_func(

// stack effect: ( -- __0)
inst(FOR_ITER){
PREDICTED(FOR_ITER);
/* before: [iter]; after: [iter, iter()] *or* [] */
PyObject *iter = TOP();
PyObject *next = (*Py_TYPE(iter)->tp_iternext)(iter);
Expand DownExpand Up@@ -3118,7 +3106,6 @@ dummy_func(

// stack effect: (__0, __array[oparg] -- )
inst(CALL){
PREDICTED(CALL);
int total_args, is_meth;
is_meth = is_method(stack_pointer, oparg);
PyObject *function = PEEK(oparg + 1);
Expand DownExpand Up@@ -3216,7 +3203,6 @@ dummy_func(

// stack effect: (__0, __array[oparg] -- )
inst(CALL_PY_EXACT_ARGS){
PREDICTED(CALL_PY_EXACT_ARGS);
assert(call_shape.kwnames == NULL);
DEOPT_IF(tstate->interp->eval_frame, CALL);
_PyCallCache *cache = (_PyCallCache *)next_instr;
Expand DownExpand Up@@ -3721,7 +3707,6 @@ dummy_func(

// error: CALL_FUNCTION_EX has irregular stack effect
inst(CALL_FUNCTION_EX){
PREDICTED(CALL_FUNCTION_EX);
PyObject *func, *callargs, *kwargs = NULL, *result;
if (oparg & 0x01){
kwargs = POP();
Expand DownExpand Up@@ -3913,7 +3898,6 @@ dummy_func(

// stack effect: (__0 -- )
inst(BINARY_OP){
PREDICTED(BINARY_OP);
PyObject *rhs = POP();
PyObject *lhs = TOP();
assert(0 <= oparg);
Expand Down
7 changes: 7 additions & 0 deletions Tools/cases_generator/generate_cases.py
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -6,6 +6,7 @@

import argparse
import io
import re
import sys

import parser
Expand DownExpand Up@@ -61,12 +62,18 @@ def always_exits(block: parser.Block) -> bool:


def write_cases(f: io.TextIOBase, instrs: list[InstDef]):
predictions = set()
for inst in instrs:
for target in re.findall(r"(?:PREDICT|GO_TO_INSTRUCTION)\((\w+)\)", inst.block.text):
predictions.add(target)
indent = " "
f.write("// This file is generated by Tools/scripts/generate_cases.py\n")
f.write("// Do not edit!\n")
for instr in instrs:
assert isinstance(instr, InstDef)
f.write(f"\n{indent}TARGET({instr.name}){{\n")
if instr.name in predictions:
f.write(f"{indent} PREDICTED({instr.name});\n")
# input = ", ".join(instr.inputs)
# output = ", ".join(instr.outputs)
# f.write(f"{indent} //{input} --{output}\n")
Expand Down