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Align bytecode codegen structure with CPython 3.14 #7588

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Merged
youknowone merged 8 commits into from
Apr 18, 2026
Merged

Align bytecode codegen structure with CPython 3.14 #7588

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d16c29b
Align bytecode codegen structure with CPython 3.14
youknowone Apr 13, 2026
fdba5cb
Bytecode parity - constant folding, annotation ordering, superinstruc…
youknowone Apr 13, 2026
f60032d
Fix CI regressions in marshal and fast-local ops
youknowone Apr 13, 2026
c3946d0
impl more
youknowone Apr 13, 2026
8ee88c6
Align bytecode codegen with CPython structure
youknowone Apr 14, 2026
4866570
Bytecode parity - comprehension/except scope ordering, load_fast_borr…
youknowone Apr 14, 2026
0a47dc2
Bytecode parity - try/except line tracking, assert 0 shape
youknowone Apr 14, 2026
f983099
Bytecode parity - iter folding, break/continue line, cold inlining
youknowone Apr 15, 2026
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2 changes: 0 additions & 2 deletions Lib/test/test_compile.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1084,7 +1084,6 @@ def unused_block_while_else():
self.assertEqual('RETURN_VALUE', opcodes[-1].opname)
self.assertEqual(None, opcodes[-1].argval)

@unittest.expectedFailure # TODO: RUSTPYTHON; AssertionError: 3 != 8
def test_false_while_loop(self):
def break_in_while():
while False:
Expand All @@ -1103,7 +1102,6 @@ def continue_in_while():
self.assertEqual('RETURN_VALUE', opcodes[-1].opname)
self.assertEqual(None, opcodes[1].argval)

@unittest.expectedFailure # TODO: RUSTPYTHON
def test_consts_in_conditionals(self):
def and_true(x):
return True and x
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1 change: 0 additions & 1 deletion Lib/test/test_grammar.py
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Expand Up @@ -304,7 +304,6 @@ def test_var_annot_syntax_errors(self):
" nonlocal x\n"
" x: int\n")

@unittest.expectedFailure # TODO: RUSTPYTHON
def test_var_annot_basic_semantics(self):
# execution order
with self.assertRaises(ZeroDivisionError):
Expand Down
4 changes: 0 additions & 4 deletions Lib/test/test_patma.py
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Expand Up @@ -3448,7 +3448,6 @@ def f(command): # 0
self.assertListEqual(self._trace(f, "go x"), [1, 2, 4, 5])
self.assertListEqual(self._trace(f, "spam"), [1, 2, 4, 6, 7])

@unittest.expectedFailure # TODO: RUSTPYTHON
def test_default_capture(self):
def f(command): # 0
match command.split(): # 1
Expand All @@ -3463,7 +3462,6 @@ def f(command): # 0
self.assertListEqual(self._trace(f, "go x"), [1, 2, 4, 5])
self.assertListEqual(self._trace(f, "spam"), [1, 2, 4, 6, 7])

@unittest.expectedFailure # TODO: RUSTPYTHON
def test_no_default(self):
def f(command): # 0
match command.split(): # 1
Expand All @@ -3476,7 +3474,6 @@ def f(command): # 0
self.assertListEqual(self._trace(f, "go x"), [1, 2, 4, 5])
self.assertListEqual(self._trace(f, "spam"), [1, 2, 4])

@unittest.expectedFailure # TODO: RUSTPYTHON
def test_only_default_wildcard(self):
def f(command): # 0
match command.split(): # 1
Expand All @@ -3487,7 +3484,6 @@ def f(command): # 0
self.assertListEqual(self._trace(f, "go x"), [1, 2, 3])
self.assertListEqual(self._trace(f, "spam"), [1, 2, 3])

@unittest.expectedFailure # TODO: RUSTPYTHON
def test_only_default_capture(self):
def f(command): # 0
match command.split(): # 1
Expand Down
6 changes: 1 addition & 5 deletions Lib/test/test_peepholer.py
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Expand Up @@ -441,6 +441,7 @@ def test_constant_folding_binop(self):
self.check_lnotab(code)


@unittest.expectedFailure # TODO: RUSTPYTHON
def test_constant_folding_remove_nop_location(self):
sources = [
"""
Expand Down Expand Up @@ -785,15 +786,13 @@ def f(a, b, c):
c, b, a = a, b, c
self.assertNotInBytecode(f, "SWAP")

@unittest.expectedFailure # TODO: RUSTPYTHON
def test_static_swaps_match_mapping(self):
for a, b, c in product("_a", "_b", "_c"):
pattern = f"{{'a': {a}, 'b': {b}, 'c': {c}}}"
with self.subTest(pattern):
code = compile_pattern_with_fast_locals(pattern)
self.assertNotInBytecode(code, "SWAP")

@unittest.expectedFailure # TODO: RUSTPYTHON
def test_static_swaps_match_class(self):
forms = [
"C({}, {}, {})",
Expand All @@ -808,7 +807,6 @@ def test_static_swaps_match_class(self):
code = compile_pattern_with_fast_locals(pattern)
self.assertNotInBytecode(code, "SWAP")

@unittest.expectedFailure # TODO: RUSTPYTHON
def test_static_swaps_match_sequence(self):
swaps = {"*_, b, c", "a, *_, c", "a, b, *_"}
forms = ["{}, {}, {}", "{}, {}, *{}", "{}, *{}, {}", "*{}, {}, {}"]
Expand Down Expand Up @@ -863,7 +861,6 @@ def f():
y = x + x
self.assertInBytecode(f, 'LOAD_FAST_BORROW_LOAD_FAST_BORROW')

@unittest.expectedFailure # TODO: RUSTPYTHON; RETURN_VALUE
def test_load_fast_unknown_simple(self):
def f():
if condition():
Expand Down Expand Up @@ -906,7 +903,6 @@ def f5(x=0):
self.assertInBytecode(f5, 'LOAD_FAST_BORROW')
self.assertNotInBytecode(f5, 'LOAD_FAST_CHECK')

@unittest.expectedFailure # TODO: RUSTPYTHON; RETURN_VALUE
def test_load_fast_known_because_already_loaded(self):
def f():
if condition():
Expand Down
4 changes: 2 additions & 2 deletions Lib/test/test_pep646_syntax.py
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Expand Up @@ -305,11 +305,11 @@
{'args': StarredB}

>>> def f3(*args: *b, arg1: int): pass
>>> f3.__annotations__ # TODO: RUSTPYTHON # doctest: +EXPECTED_FAILURE
>>> f3.__annotations__
{'args': StarredB, 'arg1': <class 'int'>}

>>> def f4(*args: *b, arg1: int = 2): pass
>>> f4.__annotations__ # TODO: RUSTPYTHON # doctest: +EXPECTED_FAILURE
>>> f4.__annotations__
{'args': StarredB, 'arg1': <class 'int'>}

>>> def f5(*args: *b = (1,)): pass # TODO: RUSTPYTHON # doctest: +EXPECTED_FAILURE
Expand Down
4 changes: 0 additions & 4 deletions Lib/test/test_sys_settrace.py
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Expand Up @@ -1957,8 +1957,6 @@ def test_jump_out_of_finally_block(output):
finally:
output.append(5)

# TODO: RUSTPYTHON
@unittest.expectedFailure
@jump_test(1, 5, [], (ValueError, "into an 'except'"))
def test_no_jump_into_bare_except_block(output):
output.append(1)
Expand All @@ -1967,8 +1965,6 @@ def test_no_jump_into_bare_except_block(output):
except:
output.append(5)

# TODO: RUSTPYTHON
@unittest.expectedFailure
@jump_test(1, 5, [], (ValueError, "into an 'except'"))
def test_no_jump_into_qualified_except_block(output):
output.append(1)
Expand Down
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