[TVM Discuss] [Questions] How to leverage tvm.tir.transform in TVM 0.7

[Jared Roesch via TVM Discuss]

If you want to just simplify a single expression/stmt you can use the internal 
API to do so.

Here is how simplify pass is defined:

```
Pass Simplify() {
  auto pass_func = [](PrimFunc f, IRModule m, PassContext ctx) {
    auto* n = f.CopyOnWrite();
    arith::Analyzer analyzer;
    n->body = arith::StmtSimplifier(&analyzer).Simplify(std::move(n->body));
    return f;
  };
  return CreatePrimFuncPass(pass_func, 0, "tir.Simplify", {});
}
```

```
 arith::Analyzer analyzer;
 arith::StmtSimplifier(&analyzer).Simplify(stmt)
```





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