Author: LLVM - Bewertung: 1x - Views:4
2026 EuroLLVM Developers' Meeting
https://llvm.org/devmtg/2026-04/
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Title: HIVM: MLIR Dialect Stack for Ascend NPU Compilation
Speaker: Hugo Trachino
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Slides: https://llvm.org/devmtg/2026-04/slides/tutorial/tutorial_tarasov.pdf
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Huawei Ascend NPUs combine DaVinci AI cores with a rich memory/synchronization hierarchy and, on newer generations, a SIMD+SIMT execution model, making performance-oriented compilation challenging. We present HIVM, an open-source family of MLIR dialects that lowers PyTorch/Inductor - Triton - MLIR (HIVM) - LLVM IR, enabling Ascend-specific optimizations such as layout assignment/propagation, vector intrinsic selection/legalization, and explicit DMA/transfer scheduling with synchronization. The pipeline ultimately targets the BiSheng LLVM-based backend to produce executable code for Ascend chips. The talk walks step-by-step through the key IR levels and transformation passes, serving as a practical baseline for developers building MLIR toolchains for Ascend.
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