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[mypyc] feat: specialize isinstance for tuple of primitive types #19949

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Merged
JukkaL merged 14 commits into from
Sep 30, 2025
Merged

[mypyc] feat: specialize isinstance for tuple of primitive types #19949

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1975746
[mypyc] feat: specialize isinstance for tuple of primitive types
BobTheBuidler Sep 29, 2025
e23d1f1
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Sep 29, 2025
95ee648
fix mypy errs
BobTheBuidler Sep 29, 2025
73f6297
fix: desc is None
BobTheBuidler Sep 29, 2025
7d5b66a
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Sep 29, 2025
ceda7cc
fix type errs
BobTheBuidler Sep 29, 2025
628294d
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Sep 29, 2025
0d51ead
add ir test
BobTheBuidler Sep 29, 2025
3ea6d17
Merge branch 'isinstance-tuple-of-primitives' of https://github.com/B…
BobTheBuidler Sep 29, 2025
8a3a1b2
Update specialize.py
BobTheBuidler Sep 29, 2025
355ceec
flip flop
BobTheBuidler Sep 29, 2025
c29d5cd
add a variety of run test cases
BobTheBuidler Sep 29, 2025
4e1596c
use cast
BobTheBuidler Sep 29, 2025
fa7f46b
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Sep 29, 2025
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pre-commit-ci[bot] committed Sep 29, 2025
commit fa7f46b5af24e61e57bd2980ffae4ab04d84d356
4 changes: 3 additions & 1 deletion mypyc/irbuild/specialize.py
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Expand Up @@ -642,7 +642,9 @@ def translate_isinstance(builder: IRBuilder, expr: CallExpr, callee: RefExpr) ->
is_last = i == len(descs) - 1
next_block = fail_block if is_last else BasicBlock()
builder.add_bool_branch(
builder.primitive_op(cast(PrimitiveDescription, desc), [obj], expr.line), pass_block, next_block
builder.primitive_op(cast(PrimitiveDescription, desc), [obj], expr.line),
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@JukkaL JukkaL Sep 30, 2025

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Here a slightly better way to narrow the type would be to use assert desc is not None before the call, but this is fine as well.

pass_block,
next_block,
)
if not is_last:
builder.activate_block(next_block)
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