[llvm] [clang] [clang-tools-extra] [mlir] [mlir][TilingInterface] Early return cloned ops if tile sizes are zeros. (PR #75410)

[Han-Chung Wang via cfe-commits]

================
@@ -362,14 +362,20 @@ mlir::scf::tileUsingSCFForOp(RewriterBase &rewriter, 
TilingInterface op,
   auto clonedOp = cast<TilingInterface>(
       cloneOpAndUpdateDestinationArgs(rewriter, op, clonedOpDestination));
 
-  // 5b. Tile the cloned operation.
+  // 5b. Early return cloned op if tiling is not happening.
----------------
hanhanW wrote:

My take is that there are issues about replace op with itself. Do you want me 
to look into the crash further or add more comments to the code and commit?

https://github.com/llvm/llvm-project/pull/75410
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