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Bytecode parity CFG normalization and jump cleanup #7721

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Merged
youknowone merged 7 commits into from
Apr 30, 2026
Merged

Bytecode parity CFG normalization and jump cleanup #7721

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5023570
typealias reviews
youknowone Apr 22, 2026
701b081
Bytecode parity - try/except block order, CFG reorder
youknowone Apr 22, 2026
5565f98
Align CFG cleanup bytecode with CPython
youknowone Apr 28, 2026
b54cfd6
Unmark test_dis.test_findlabels expected failure
youknowone Apr 29, 2026
23c689d
Compute target predecessor flags in single pass
youknowone Apr 29, 2026
238d1e7
Address review feedback on slice folding, fallthrough, attr-chain
youknowone Apr 30, 2026
c267535
remove test
youknowone Apr 30, 2026
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remove test
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@youknowone
youknowone committed Apr 30, 2026
commit c267535c61150df71b01db8bd153bdb15a6370ae
1 change: 0 additions & 1 deletion .cspell.json
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Original file line number Diff line number Diff line change
Expand Up @@ -67,7 +67,6 @@
"jitted",
"jitting",
"kwonly",
"lolcatz",
"lossily",
"mcache",
"oparg",
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27 changes: 5 additions & 22 deletions crates/codegen/src/compile.rs
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Expand Up @@ -13665,36 +13665,19 @@ def f(filters, text, category, module, lineno, defaultaction, _wm):
fn test_try_except_else_with_finally_keeps_with_handler_before_outer_except() {
let code = compile_exec(
"\
def jumpy(i):
for i in range(10):
print(i)
if i < 4:
continue
if i > 6:
break
else:
print('I can haz else clause?')
while i:
print(i)
i -= 1
if i > 6:
continue
if i < 4:
break
else:
print('Who let lolcatz into this test suite?')
def f(i):
try:
1 / 0
except ZeroDivisionError:
print('Here we go, here we go, here we go...')
print('e')
else:
with i as dodgy:
print('Never reach this')
print('w')
finally:
print('OK, now we\\'re done')
print('d')
",
);
let jumpy = find_code(&code, "jumpy").expect("missing jumpy code");
let jumpy = find_code(&code, "f").expect("missing f code");
let ops: Vec<_> = jumpy
.instructions
.iter()
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