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[Fix] cython 3.0 generates incorrect code for python stable api #1789

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Merged
oraluben merged 2 commits into from
Feb 5, 2026
Merged

[Fix] cython 3.0 generates incorrect code for python stable api #1789

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c94471d
[Fix] cython 3.0 generates incorrect code for python stable api
oraluben Feb 4, 2026
c264339
Fix for 3.9: `A | B` is invalid as expression even with `__future__`
oraluben Feb 4, 2026
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2 changes: 1 addition & 1 deletion pyproject.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -59,7 +59,7 @@ nvcc = [

[build-system]
requires = [
"cython>=3.0.0",
"cython>=3.1.0",
"scikit-build-core",
"z3-solver>=4.13.0",
# Not for auditwheel, explicitly add patchelf for repairing libz3.so.
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10 changes: 6 additions & 4 deletions tilelang/_typing.py
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Expand Up @@ -11,17 +11,19 @@
except ImportError: # Python < 3.10
from typing_extensions import TypeAlias

from typing import Union

from tvm import ir
from tvm import tir

from tvm.tir import BufferLoad, BufferRegion
from tilelang.dtypes import dtype

# Barrier can only be a Buffer, a BufferLoad
BarrierType: TypeAlias = tir.Buffer | BufferLoad
BarrierType: TypeAlias = Union[tir.Buffer, BufferLoad]

# BufferLikeType can be a Buffer, a BufferLoad, a BufferRegion
BufferLikeType: TypeAlias = tir.Buffer | BufferLoad | BufferRegion
BufferLikeType: TypeAlias = Union[tir.Buffer, BufferLoad, BufferRegion]

# This is for Python 3.9 compatibility.
# In Python 3.9, we can only use isinstance(a, (TypeA, TypeB, ...)) instead of isinstance(a, TypeA | TypeB | ...))
Expand All @@ -31,5 +33,5 @@
# - AnyDType is a union of all possible types that can represent a data type, including torch.dtype
# - DType is a more specific type alias that represents a data type in the context of TileLang, and must be
# adapted to string.
DType: TypeAlias = dtype | ir.Type | str | type
ShapeType: TypeAlias = list[tir.PrimExpr | int] | tuple[tir.PrimExpr | int, ...]
DType: TypeAlias = Union[dtype, ir.Type, str, type]
ShapeType: TypeAlias = Union[list[Union[tir.PrimExpr, int]], tuple[Union[tir.PrimExpr, int], ...]]
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