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[Script] Enhance alloc buffer handling in nested frames #18088

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Merged
tqchen merged 1 commit into from
Jun 23, 2025
Merged

[Script] Enhance alloc buffer handling in nested frames #18088

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2 changes: 1 addition & 1 deletion src/script/ir_builder/tir/ir.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -269,7 +269,7 @@ Buffer AllocBuffer(Array<PrimExpr> shape, DataType dtype, Optional<Var> data,
Buffer buffer = BufferDecl(shape, dtype, "", data, strides, elem_offset, storage_scope, align,
offset_factor, buffer_type_str, axis_separators);
IRBuilder builder = IRBuilder::Current();
if (Optional<BlockFrame> frame = builder->GetLastFrame<BlockFrame>()) {
if (Optional<BlockFrame> frame = builder->FindFrame<BlockFrame>()) {
frame.value()->alloc_buffers.push_back(buffer);
} else if (Optional<PrimFuncFrame> frame = builder->GetLastFrame<PrimFuncFrame>()) {
frame.value()->root_alloc_buffers.push_back(buffer);
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23 changes: 23 additions & 0 deletions tests/python/tvmscript/test_tvmscript_parser_tir.py
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Original file line number Diff line number Diff line change
Expand Up @@ -588,5 +588,28 @@ def func3():
T.evaluate(0)


def test_alloc_inside_block():
@T.prim_func(private=True)
def func() -> None:
with T.block():
A = T.alloc_buffer([10], "float32")
for i in T.serial(0, 10):
B = T.alloc_buffer([10], "float32")
for j in T.serial(0, 10):
B[j] = T.float32(j)
A[i] += B[j]

@T.prim_func(private=True)
def expected() -> None:
with T.block():
A = T.alloc_buffer([10], "float32")
B = T.alloc_buffer([10], "float32")
for i, j in T.grid(10, 10):
B[j] = T.float32(j)
A[i] += B[j]

tvm.ir.assert_structural_equal(func, expected)


if __name__ == "__main__":
tvm.testing.main()
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