[Apache TVM Discuss] [Questions] If_scope in ir_builder

[Michael via Apache TVM Discuss <no...@discuss.tvm.ai>]

Hi, I'm using the ir_builder to contrust a cuda kernel, but I encounter a problem of if_scope
```
 ib = tvm.tir.ir_builder.create()
    n = te.size_var("n")
    A = ib.pointer("float32", name="A")
    tmod = tvm.tir.truncmod
    with ib.for_range(0, n, name="i") as i:
        with ib.if_scope(tmod(i, 2) == 0):
            A[i] = A[i] + 1
            b = 100
        with ib.else_scope():
            A[0] = A[i] + 2
            b  =  200
    A[3] = b
```
I find some error occurred. The problem is that ir builder will fold  the variable python automatically. In my case, this python code did not appeared in my if_else_scope.  Is there any approach to solve this problem?

Appreciate for any explanation of this or any suggestions about this issue. Thanks in advance!





---
[Visit Topic](https://discuss.tvm.apache.org/t/if-scope-in-ir-builder/9332/1) to respond.

You are receiving this because you enabled mailing list mode.

To unsubscribe from these emails, [click here](https://discuss.tvm.apache.org/email/unsubscribe/3b2a1c7d032219dda12398c55e81d1185456b8ffd3636923e1ac43ef2d708133).

[Apache TVM Discuss] [Questions] If_scope in ir_builder

[Michael via Apache TVM Discuss <no...@discuss.tvm.ai>]

Thank you @leeexyz. Yeah, we can use ```tvm.tir.const``` or  a new buffer. I means, it there any mechanism to prevent users using python variables within a ```if_scope```.  For example, error message to tell users to utilize ```tvm.tir.const``` since it's quite easy to confuse the python variable with tvm Expr. It still works sometimes event thought we define some python variables within a ```if_scope```. That really causes me a lot of trouble.





---
[Visit Topic](https://discuss.tvm.apache.org/t/if-scope-in-ir-builder/9332/3) to respond.

You are receiving this because you enabled mailing list mode.

To unsubscribe from these emails, [click here](https://discuss.tvm.apache.org/email/unsubscribe/ee271675e3243c7cc65ce4c3ec8cca16cde2ab1cc549d855fc20d90261db3dfb).

[Apache TVM Discuss] [Questions] If_scope in ir_builder

[leeexyz via Apache TVM Discuss <no...@discuss.tvm.ai>]

Hi @SYangDong, use `b = tvm.tir.const(100, dtype="float32")` instead of the assgiment directly.





---
[Visit Topic](https://discuss.tvm.apache.org/t/if-scope-in-ir-builder/9332/2) to respond.

You are receiving this because you enabled mailing list mode.

To unsubscribe from these emails, [click here](https://discuss.tvm.apache.org/email/unsubscribe/e0e1f62852f51208b8ab25fb707618e687bb66ffa3c9cc065bdbbaa8847d010e).