Add reverse-mode AD support and dimension permutation to qwix hijax. - #344
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This change implements Vector-Jacobian Product (VJP) for the hijax conversion primitives. It also introduces a PermuteDims primitive, along with permute_dims and transpose functions for HiQArray, including their VJP implementations. Finally, it adds unit tests to verify the backward passes and permutation operations. PiperOrigin-RevId: 958434873
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Add reverse-mode AD support and dimension permutation to qwix hijax.
This change implements Vector-Jacobian Product (VJP) for the hijax conversion primitives. It also introduces a PermuteDims primitive, along with permute_dims and transpose functions for HiQArray, including their VJP implementations. Finally, it adds unit tests to verify the backward passes and permutation operations.