[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:

I actually tried that, but it crashes about rewriter states. I did not dig into 
details because I have less experience about that...

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