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Lei Wang authored
* [Feature] Implement CumSum operation in TileLang * Added CumSumOp class for cumulative sum operations, including argument validation and lowering logic. * Introduced CumSum2D template for CUDA, supporting both forward and reverse cumulative sums. * Created tests for CumSum functionality in shared memory and fragment contexts. * Updated language interface to include cumsum operation, enhancing the reduction capabilities of TileLang. * Refactored reduce.py to support cumsum functionality with appropriate memory allocation and copying mechanisms. * lint fix
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