L0phTg commented on PR #15544:
URL: https://github.com/apache/tvm/pull/15544#issuecomment-1676291622
case 1:
```python
@I.ir_module
class Module:
@R.function
def func(
A: R.Tensor(("m", "m + n"), dtype="float32")
) -> R.Tensor(dtype="float32", ndim=2):
m = T.int64()
n = T.int64()
k = T.int64()
with R.dataflow():
lv: R.Tensor((m, k), dtype="float32") = R.match_cast(
A, R.Tensor((m, k), dtype="float32")
)
gv: R.Tensor((m, k), dtype="float32") = lv
R.output(gv)
return gv
```
after pipelineļ¼
```python
mod_after_pipeline = relax.pipeline.get_pipeline()(mod)
```
will cause:
```bash
6: tvm::relax::GraphCreator::VisitBindingBlock(tvm::relax::BindingBlock
const&)
5:
tvm::relax::ExprVisitor::VisitBindingBlock_(tvm::relax::DataflowBlockNode
const*)
4: tvm::relax::ExprVisitor::VisitBinding(tvm::relax::Binding const&)
3: tvm::relax::GraphCreator::VisitBinding_(tvm::relax::VarBindingNode
const*)
2: tvm::relax::PostOrderVisit(tvm::RelayExpr const&, std::function)
1: std::_Function_handler::_M_invoke(std::_Any_data const&, tvm::RelayExpr
const&)
0: tvm::relax::GraphCreator::VisitLeaf(tvm::RelayExpr const&,
tvm::relay::IndexedForwardGraph::Node*, tvm::relay::OpPatternKind const&)
File
"/media/l0phtg/movable/tools-git/tvm/src/relax/transform/fuse_ops.cc", line 269
TVMError: The leaf Expr is supposed to be defined before, but got: lv used
before definition.
```
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