U2 dq mat mul rebase#36329
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Introduce a new graph-rewrite pass (DQMatMulCWuAsymm) that restructures the asymmetric dequantize-then-MatMul subgraph: cast(W) -> Subtract(Z) -> Multiply(S) -> MatMul(Act) into a form where the quantized weights remain at the MatMul input: MatMul(Act, cast(W)) -> Subtract(ReduceSum(Act)*Z) -> Multiply(S) This allows the NPU sub-compiler to fuse the Convert+MatMul into a native quant-MatMul kernel, while the zero-point and scale corrections are applied post-MatMul on small tensors. Supported weight types: u2, u4, u8, i4, i8 with f32 zero-point and scale of shape [N, 1] (channel-wise). Register the new matcher in Partitioner::optimize() alongside DQMatMulCWi. Signed-off-by: Anoob Anto Kodankandath <anoob.anto.kodankandath@intel.com>
The CWAI path in getPartitioning() was missing the optimize() call that the FOLD path already makes. Without it, the DQ graph-rewrite passes are never run. Add p.optimize so that NPUW_DQ-gated rewrites apply on the CWAI path. Signed-off-by: Anoob Anto Kodankandath <anoob.anto.kodankandath@intel.com>
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