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cpython/Python/tier2_redundancy_eliminator...

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#include "Python.h"
#include "pycore_uops.h"
#include "pycore_uop_ids.h"
#include "internal/pycore_moduleobject.h"
#define op(name, ...) /* NAME is ignored */
typedef struct _Py_UOpsSymType _Py_UOpsSymType;
typedef struct _Py_UOpsAbstractInterpContext _Py_UOpsAbstractInterpContext;
typedef struct _Py_UOpsAbstractFrame _Py_UOpsAbstractFrame;
static int
dummy_func(void) {
PyCodeObject *code;
int oparg;
_Py_UOpsSymType *flag;
_Py_UOpsSymType *left;
_Py_UOpsSymType *right;
_Py_UOpsSymType *value;
_Py_UOpsSymType *res;
_Py_UOpsSymType *iter;
_Py_UOpsSymType *top;
_Py_UOpsSymType *bottom;
_Py_UOpsAbstractFrame *frame;
_Py_UOpsAbstractInterpContext *ctx;
_PyUOpInstruction *this_instr;
_PyBloomFilter *dependencies;
int modified;
// BEGIN BYTECODES //
op(_LOAD_FAST_CHECK, (-- value)) {
value = GETLOCAL(oparg);
// We guarantee this will error - just bail and don't optimize it.
if (sym_is_null(value)) {
goto out_of_space;
}
}
op(_LOAD_FAST, (-- value)) {
value = GETLOCAL(oparg);
}
op(_LOAD_FAST_AND_CLEAR, (-- value)) {
value = GETLOCAL(oparg);
_Py_UOpsSymType *temp;
OUT_OF_SPACE_IF_NULL(temp = sym_new_null(ctx));
GETLOCAL(oparg) = temp;
}
op(_STORE_FAST, (value --)) {
GETLOCAL(oparg) = value;
}
op(_PUSH_NULL, (-- res)) {
res = sym_new_null(ctx);
if (res == NULL) {
goto out_of_space;
};
}
op(_GUARD_BOTH_INT, (left, right -- left, right)) {
if (sym_matches_type(left, &PyLong_Type) &&
sym_matches_type(right, &PyLong_Type)) {
REPLACE_OP(this_instr, _NOP, 0, 0);
}
sym_set_type(left, &PyLong_Type);
sym_set_type(right, &PyLong_Type);
}
op(_GUARD_BOTH_FLOAT, (left, right -- left, right)) {
if (sym_matches_type(left, &PyFloat_Type) &&
sym_matches_type(right, &PyFloat_Type)) {
REPLACE_OP(this_instr, _NOP, 0 ,0);
}
sym_set_type(left, &PyFloat_Type);
sym_set_type(right, &PyFloat_Type);
}
op(_GUARD_BOTH_UNICODE, (left, right -- left, right)) {
if (sym_matches_type(left, &PyUnicode_Type) &&
sym_matches_type(right, &PyUnicode_Type)) {
REPLACE_OP(this_instr, _NOP, 0 ,0);
}
sym_set_type(left, &PyUnicode_Type);
sym_set_type(right, &PyUnicode_Type);
}
op(_BINARY_OP_ADD_INT, (left, right -- res)) {
if (sym_is_const(left) && sym_is_const(right)) {
assert(PyLong_CheckExact(sym_get_const(left)));
assert(PyLong_CheckExact(sym_get_const(right)));
PyObject *temp = _PyLong_Add((PyLongObject *)sym_get_const(left),
(PyLongObject *)sym_get_const(right));
if (temp == NULL) {
goto error;
}
OUT_OF_SPACE_IF_NULL(res = sym_new_const(ctx, temp));
// TODO gh-115506:
// replace opcode with constant propagated one and add tests!
}
else {
OUT_OF_SPACE_IF_NULL(res = sym_new_known_type(ctx, &PyLong_Type));
}
}
op(_BINARY_OP_SUBTRACT_INT, (left, right -- res)) {
if (sym_is_const(left) && sym_is_const(right)) {
assert(PyLong_CheckExact(sym_get_const(left)));
assert(PyLong_CheckExact(sym_get_const(right)));
PyObject *temp = _PyLong_Subtract((PyLongObject *)sym_get_const(left),
(PyLongObject *)sym_get_const(right));
if (temp == NULL) {
goto error;
}
OUT_OF_SPACE_IF_NULL(res = sym_new_const(ctx, temp));
// TODO gh-115506:
// replace opcode with constant propagated one and add tests!
}
else {
OUT_OF_SPACE_IF_NULL(res = sym_new_known_type(ctx, &PyLong_Type));
}
}
op(_BINARY_OP_MULTIPLY_INT, (left, right -- res)) {
if (sym_is_const(left) && sym_is_const(right)) {
assert(PyLong_CheckExact(sym_get_const(left)));
assert(PyLong_CheckExact(sym_get_const(right)));
PyObject *temp = _PyLong_Multiply((PyLongObject *)sym_get_const(left),
(PyLongObject *)sym_get_const(right));
if (temp == NULL) {
goto error;
}
OUT_OF_SPACE_IF_NULL(res = sym_new_const(ctx, temp));
// TODO gh-115506:
// replace opcode with constant propagated one and add tests!
}
else {
OUT_OF_SPACE_IF_NULL(res = sym_new_known_type(ctx, &PyLong_Type));
}
}
op(_BINARY_OP_ADD_FLOAT, (left, right -- res)) {
if (sym_is_const(left) && sym_is_const(right)) {
assert(PyFloat_CheckExact(sym_get_const(left)));
assert(PyFloat_CheckExact(sym_get_const(right)));
PyObject *temp = PyFloat_FromDouble(
PyFloat_AS_DOUBLE(sym_get_const(left)) +
PyFloat_AS_DOUBLE(sym_get_const(right)));
if (temp == NULL) {
goto error;
}
res = sym_new_const(ctx, temp);
// TODO gh-115506:
// replace opcode with constant propagated one and update tests!
}
else {
OUT_OF_SPACE_IF_NULL(res = sym_new_known_type(ctx, &PyFloat_Type));
}
}
op(_BINARY_OP_SUBTRACT_FLOAT, (left, right -- res)) {
if (sym_is_const(left) && sym_is_const(right)) {
assert(PyFloat_CheckExact(sym_get_const(left)));
assert(PyFloat_CheckExact(sym_get_const(right)));
PyObject *temp = PyFloat_FromDouble(
PyFloat_AS_DOUBLE(sym_get_const(left)) -
PyFloat_AS_DOUBLE(sym_get_const(right)));
if (temp == NULL) {
goto error;
}
res = sym_new_const(ctx, temp);
// TODO gh-115506:
// replace opcode with constant propagated one and update tests!
}
else {
OUT_OF_SPACE_IF_NULL(res = sym_new_known_type(ctx, &PyFloat_Type));
}
}
op(_BINARY_OP_MULTIPLY_FLOAT, (left, right -- res)) {
if (sym_is_const(left) && sym_is_const(right)) {
assert(PyFloat_CheckExact(sym_get_const(left)));
assert(PyFloat_CheckExact(sym_get_const(right)));
PyObject *temp = PyFloat_FromDouble(
PyFloat_AS_DOUBLE(sym_get_const(left)) *
PyFloat_AS_DOUBLE(sym_get_const(right)));
if (temp == NULL) {
goto error;
}
res = sym_new_const(ctx, temp);
// TODO gh-115506:
// replace opcode with constant propagated one and update tests!
}
else {
OUT_OF_SPACE_IF_NULL(res = sym_new_known_type(ctx, &PyFloat_Type));
}
}
op(_LOAD_CONST, (-- value)) {
// There should be no LOAD_CONST. It should be all
// replaced by peephole_opt.
Py_UNREACHABLE();
}
op(_LOAD_CONST_INLINE, (ptr/4 -- value)) {
OUT_OF_SPACE_IF_NULL(value = sym_new_const(ctx, ptr));
}
op(_LOAD_CONST_INLINE_BORROW, (ptr/4 -- value)) {
OUT_OF_SPACE_IF_NULL(value = sym_new_const(ctx, ptr));
}
op(_LOAD_CONST_INLINE_WITH_NULL, (ptr/4 -- value, null)) {
OUT_OF_SPACE_IF_NULL(value = sym_new_const(ctx, ptr));
OUT_OF_SPACE_IF_NULL(null = sym_new_null(ctx));
}
op(_LOAD_CONST_INLINE_BORROW_WITH_NULL, (ptr/4 -- value, null)) {
OUT_OF_SPACE_IF_NULL(value = sym_new_const(ctx, ptr));
OUT_OF_SPACE_IF_NULL(null = sym_new_null(ctx));
}
op(_COPY, (bottom, unused[oparg-1] -- bottom, unused[oparg-1], top)) {
assert(oparg > 0);
top = bottom;
}
op(_SWAP, (bottom, unused[oparg-2], top --
top, unused[oparg-2], bottom)) {
}
op(_LOAD_ATTR_INSTANCE_VALUE, (index/1, owner -- attr, null if (oparg & 1))) {
_LOAD_ATTR_NOT_NULL
(void)index;
(void)owner;
}
op(_CHECK_ATTR_MODULE, (dict_version/2, owner -- owner)) {
(void)dict_version;
if (sym_is_const(owner)) {
PyObject *cnst = sym_get_const(owner);
if (PyModule_CheckExact(cnst)) {
PyModuleObject *mod = (PyModuleObject *)cnst;
PyObject *dict = mod->md_dict;
uint64_t watched_mutations = get_mutations(dict);
if (watched_mutations < _Py_MAX_ALLOWED_GLOBALS_MODIFICATIONS) {
PyDict_Watch(GLOBALS_WATCHER_ID, dict);
_Py_BloomFilter_Add(dependencies, dict);
this_instr->opcode = _NOP;
}
}
}
}
op(_LOAD_ATTR_MODULE, (index/1, owner -- attr, null if (oparg & 1))) {
(void)index;
OUT_OF_SPACE_IF_NULL(null = sym_new_null(ctx));
attr = NULL;
if (this_instr[-1].opcode == _NOP) {
// Preceding _CHECK_ATTR_MODULE was removed: mod is const and dict is watched.
assert(sym_is_const(owner));
PyModuleObject *mod = (PyModuleObject *)sym_get_const(owner);
assert(PyModule_CheckExact(mod));
PyObject *dict = mod->md_dict;
PyObject *res = convert_global_to_const(this_instr, dict);
if (res != NULL) {
this_instr[-1].opcode = _POP_TOP;
OUT_OF_SPACE_IF_NULL(attr = sym_new_const(ctx, res));
}
}
if (attr == NULL) {
/* No conversion made. We don't know what `attr` is. */
OUT_OF_SPACE_IF_NULL(attr = sym_new_known_notnull(ctx));
}
}
op(_LOAD_ATTR_WITH_HINT, (hint/1, owner -- attr, null if (oparg & 1))) {
_LOAD_ATTR_NOT_NULL
(void)hint;
(void)owner;
}
op(_LOAD_ATTR_SLOT, (index/1, owner -- attr, null if (oparg & 1))) {
_LOAD_ATTR_NOT_NULL
(void)index;
(void)owner;
}
op(_LOAD_ATTR_CLASS, (descr/4, owner -- attr, null if (oparg & 1))) {
_LOAD_ATTR_NOT_NULL
(void)descr;
(void)owner;
}
op(_CHECK_FUNCTION_EXACT_ARGS, (func_version/2, callable, self_or_null, unused[oparg] -- callable, self_or_null, unused[oparg])) {
sym_set_type(callable, &PyFunction_Type);
(void)self_or_null;
(void)func_version;
}
op(_CHECK_CALL_BOUND_METHOD_EXACT_ARGS, (callable, null, unused[oparg] -- callable, null, unused[oparg])) {
sym_set_null(null);
sym_set_type(callable, &PyMethod_Type);
}
op(_INIT_CALL_PY_EXACT_ARGS, (callable, self_or_null, args[oparg] -- new_frame: _Py_UOpsAbstractFrame *)) {
int argcount = oparg;
(void)callable;
PyFunctionObject *func = (PyFunctionObject *)(this_instr + 2)->operand;
if (func == NULL) {
goto error;
}
PyCodeObject *co = (PyCodeObject *)func->func_code;
assert(self_or_null != NULL);
assert(args != NULL);
if (sym_is_not_null(self_or_null)) {
// Bound method fiddling, same as _INIT_CALL_PY_EXACT_ARGS in VM
args--;
argcount++;
}
_Py_UOpsSymType **localsplus_start = ctx->n_consumed;
int n_locals_already_filled = 0;
// Can determine statically, so we interleave the new locals
// and make the current stack the new locals.
// This also sets up for true call inlining.
if (sym_is_known(self_or_null)) {
localsplus_start = args;
n_locals_already_filled = argcount;
}
OUT_OF_SPACE_IF_NULL(new_frame =
ctx_frame_new(ctx, co, localsplus_start, n_locals_already_filled, 0));
}
op(_POP_FRAME, (retval -- res)) {
SYNC_SP();
ctx->frame->stack_pointer = stack_pointer;
ctx_frame_pop(ctx);
stack_pointer = ctx->frame->stack_pointer;
res = retval;
}
op(_PUSH_FRAME, (new_frame: _Py_UOpsAbstractFrame * -- unused if (0))) {
SYNC_SP();
ctx->frame->stack_pointer = stack_pointer;
ctx->frame = new_frame;
ctx->curr_frame_depth++;
stack_pointer = new_frame->stack_pointer;
}
op(_UNPACK_SEQUENCE, (seq -- values[oparg])) {
/* This has to be done manually */
(void)seq;
for (int i = 0; i < oparg; i++) {
OUT_OF_SPACE_IF_NULL(values[i] = sym_new_unknown(ctx));
}
}
op(_UNPACK_EX, (seq -- values[oparg & 0xFF], unused, unused[oparg >> 8])) {
/* This has to be done manually */
(void)seq;
int totalargs = (oparg & 0xFF) + (oparg >> 8) + 1;
for (int i = 0; i < totalargs; i++) {
OUT_OF_SPACE_IF_NULL(values[i] = sym_new_unknown(ctx));
}
}
op(_ITER_NEXT_RANGE, (iter -- iter, next)) {
OUT_OF_SPACE_IF_NULL(next = sym_new_known_type(ctx, &PyLong_Type));
(void)iter;
}
// END BYTECODES //
}
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