Hzfengsy commented on PR #11518:
URL: https://github.com/apache/tvm/pull/11518#issuecomment-1143269919
Thanks @junrushao1994 for pointing it out. However, it's not the correct way
to enforce the root block to have empty read/write regions.
The fundamental problem here is that we missed the block "C"
And the expected result is
```python
def func(a: T.Buffer[(), "int32"], b: T.Buffer[(), "int32"], c: T.Buffer[(),
"int32"]) -> None:
# function attr dict
T.func_attr({"global_symbol": "main", "tir.noalias": True})
# body
# with T.block("root")
with T.block("C"): # missed now
c[()] = a[()] + b[()]
```
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