Handle Reshape's special zero in SimplifySecondInputOfReshape (#20785) #20820
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…notoolkit#20785) * Handle Reshape's special zero in SimplifySecondInputOfReshape SimplifySecondInputOfReshape detects ShapeOf->Gather->Concat subgraphs on Reshape's second input and replaces ShapeOf->Gather with a Constant with zero(s). Currently it works only with Reshapes that have special_zero set to true, but it can work for Reshapes with special_zero == false if non-Gather inputs to Concat are Constants and don't contain any zero. Ticket: CVS-123434 * fix no default output
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andrei-kochin
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Port (#20785) to Release branch
SimplifySecondInputOfReshape detects ShapeOf->Gather->Concat subgraphs on Reshape's second input and replaces ShapeOf->Gather with a Constant with zero(s). Currently it works only with Reshapes that have special_zero set to true, but it can work for Reshapes with special_zero == false if non-Gather inputs to Concat are Constants and don't contain any zero.
Now for special_zero == false case, the transformation checks that all inputs Constants to Concat don't contain 0 values and sets special_zero = true flag to Reshape operation.
Ticket: CVS-123434