[Mlir-commits] [mlir] [mlir][tensor] Fold pack and unpack of empty input tensor (PR #92247)

[Adam Siemieniuk]

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@@ -93,12 +93,76 @@ struct FoldEmptyTensorWithExtractSliceOp
   bool foldSingleUseOnly = false;
 };
 
+/// tensor.empty does not define any tensor contents, so an unpadded pack
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adam-smnk wrote:

Padding has a side effect - if it kicks in, you get at least partially initialized buffer.
So, I opted for a more conservative approach. You could probably replace pack with pad or sth but leaving it for the future.

https://github.com/llvm/llvm-project/pull/92247