junrushao1994 commented on pull request #5585:
URL: https://github.com/apache/incubator-tvm/pull/5585#issuecomment-630957728
Just to share some interesting updates on the stack utilization issue:
I dig around with gcc `-fstack-usage`.
```
# before this change
virtual tvm::relay::Expr
tvm::relay::CommonSubexprEliminator::VisitExpr_(const tvm::relay::CallNode*)
1072 static
# after this change
virtual tvm::relay::Expr
tvm::relay::CommonSubexprEliminator::VisitExpr_(const tvm::relay::CallNode*)
4720 dynamic,bounded
```
The takeaway is that the stack frame changes from the one with static size
to the one with dynamic but bounded size. The worst case utilization 4720
becomes much larger than the constant size 1072 before
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