[clang] [flang] [clang-tools-extra] [compiler-rt] [libc] [libcxx] [llvm] [mlir] [mlir][Linalg] Support dynamic tiles in `lower_pack` transform (PR #76003)

[Han-Chung Wang via cfe-commits]

hanhanW wrote:

> I am curious though, what do you mean by more powerful expand_shape op? Wouldn't that just be exactly reshape? We don't need a more powerful expand_shape to cover all the cases you mention above.

That could be tensor.reshape, but I don't see a scenario about using it. To be honest, I don't have an answer. Bailing out the case is fine to me. If someday people think it is needed, this will help bring up the discussion. To be clear, I am not saying that this is not useful. I just don't know why this is needed.

https://github.com/llvm/llvm-project/pull/76003