masahi commented on a change in pull request #7172:
URL: https://github.com/apache/tvm/pull/7172#discussion_r549325084
##########
File path: python/tvm/topi/cuda/nms.py
##########
@@ -575,6 +593,10 @@ def nms_inner_loop(ib, j):
nms_inner_loop(ib, j)
num_valid_boxes[i] = num_valid_boxes_local[0]
+ # TODO(masahi): Want to do this instead of above, but the
following is eliminated
+ # during codegen
+ # with ib.if_scope(tx == 0):
+ # num_valid_boxes[i] = num_valid_boxes_local[0]
Review comment:
Here, I want to generate the code like this:
```
if (threadIdx.x == 0) {
num_valid_boxes[i] = num_valid_boxes_local[0]
}
```
but it seems `if_scope(tx == 0)` is eliminated during codegen. I guess this
condition is considered a dead code by the simplifier? How can I generate code
like this? @tqchen @Laurawly
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