Simplified API for simplify_iteration_space* functions #1188
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This PR simplifies calling signatures of
simplify_iteration_space*
functions. Both shape pointer and input strides are const references. Passing strides as vectors obtained usingdpctl::tensor::usm_ndarray::get_strides_vector()
method allows to do away with passing contiguity flags anditemsize
parameter.Also changed implementation to use STL functions rather than using custom loops for operations such as copying, or scaling.
This should improve performance of stride simplification calls.