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gh-115480: Type / constant propagation for float binary uops (GH-115550)

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Co-authored-by: Ken Jin <kenjin@python.org>
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Peter Lazorchak 2024-02-16 10:02:48 -08:00 • committed by GitHub
parent fbb0169731
commit 13addd2bbd
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3 changed files with 184 additions and 38 deletions
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57
Python/tier2_redundancy_eliminator_bytecodes.c
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@ -132,6 +132,63 @@ dummy_func(void) {
}
}
op(_BINARY_OP_ADD_FLOAT, (left, right -- res)) {
if (is_const(left) && is_const(right)) {
assert(PyFloat_CheckExact(get_const(left)));
assert(PyFloat_CheckExact(get_const(right)));
PyObject *temp = PyFloat_FromDouble(
PyFloat_AS_DOUBLE(get_const(left)) +
PyFloat_AS_DOUBLE(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 (is_const(left) && is_const(right)) {
assert(PyFloat_CheckExact(get_const(left)));
assert(PyFloat_CheckExact(get_const(right)));
PyObject *temp = PyFloat_FromDouble(
PyFloat_AS_DOUBLE(get_const(left)) -
PyFloat_AS_DOUBLE(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 (is_const(left) && is_const(right)) {
assert(PyFloat_CheckExact(get_const(left)));
assert(PyFloat_CheckExact(get_const(right)));
PyObject *temp = PyFloat_FromDouble(
PyFloat_AS_DOUBLE(get_const(left)) *
PyFloat_AS_DOUBLE(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.