[TorchToTosa] Lower static FP8 aten._scaled_mm to TOSA#4559
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[TorchToTosa] Lower static FP8 aten._scaled_mm to TOSA#4559
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Add Torch op definitions, abstract interpretation support, and FX importer handling for aten._scaled_mm, including float8_e8m0fnu blocked-scale tensors. Keep this change independent of TOSA legalization. Include frontend export/import coverage for per-tensor and blocked-scale FP8 shapes, plus out_dtype=None dtype inference. Signed-off-by: Cathal Corbett <cathal.corbett@arm.com> Change-Id: I102732ad725f89477b7f8fb2339d4fe920fa647b
Add TorchToTosa legalization for static FP8 aten._scaled_mm with real-valued scale tensors. Lower FP8 inputs to TOSA FP8 matmul, then apply the combined scale product to the f32 accumulator before optional bias and final output cast. Support scalar/[1] per-tensor scales and simple 1-D lhs/rhs channel scales, with lit and Python coverage for e4m3, e5m2, mixed FP8 inputs, bias, and rejection cases. Signed-off-by: Cathal Corbett <cathal.corbett@arm.com> Change-Id: Ie14b7f1a662820951ffb174285c9b5b15a9467b0
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Adds TorchToTosa legalization for static FP8 aten._scaled_mm with real-valued scale tensors.
Stacked on #4558. Until #4558 lands and this branch is rebased, the GitHub diff will include the foundational Torch op commit as well. The review focus for this PR is the second commit: static FP8 TorchToTosa lowering.