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[mlir][bufferization] Refine tensor-buffer compatibility checks (cherry-pick from upstream)#179
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andrey-golubev merged 1 commit intonpu/release/20.xfrom Nov 19, 2025
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…705) Generally, to_tensor and to_buffer already perform sufficient verification. However, there are some unnecessarily strict constraints: * builtin tensor requires its buffer counterpart to always be memref * to_buffer on ranked tensor requires to always return memref These checks are assertions (i.e. preconditions), however, they actually prevent an apparently useful bufferization where builtin tensors could become custom buffers. Lift these assertions, maintaining the verification procedure unchanged, to allow builtin -> custom bufferizations at operation boundary level.
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hrotuna
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Nov 18, 2025
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Summary
Generally, to_tensor and to_buffer already perform sufficient verification. However, there are some unnecessarily strict constraints:
These checks are assertions (i.e. preconditions), however, they actually prevent an apparently useful bufferization where builtin tensors could become custom buffers. Lift these assertions, maintaining the verification procedure unchanged, to allow builtin -> custom bufferizations at operation boundary level.
JIRA ticket
Related PR in NPU Compiler and/or OpenVINO repository with sub-module update
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