guan404ming opened a new pull request, #20039:
URL: https://github.com/apache/tvm/pull/20039
## Why
- `LegalizeOps` skips grouped `conv1d/2d/3d` when channel size is symbolic
- The only blocker is `topi.nn.conv`'s divisibility `assert`s, which fail on
symbolic `PrimExpr`; the grouped compute already handles symbolic dims
## How
- Skip the divisibility check when the channel size is not a constant int
- Remove the symbolic-channel guards from the conv legalize functions
- Add `test_conv2d_symbolic_group`; verified numerically against NumPy
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