d8dc1c22bf
I've been trying to come up with a simple and clean implementation for ReLU. TOSA uses `clamp` which is probably the goal, but that means table-gen to make it efficient (attributes, only lower `min` or `max`). For now, `max` is a reasonable named op despite ReLU, so we can start using it for tiling and fusion, and upon success, we create a more complete op `clamp` that doesn't need a whole tensor filled with zeroes or ones to implement the different activation functions. As with other named ops, we start "requiring" type casts and broadcasts, and zero filled constant tensors to a more complex pattern-matcher, and can slowly simplify with attributes or structured matchers (ex. PDL) in the future. Differential Revision: https://reviews.llvm.org/D154703
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