Add Advanced SIMD permute class for TRN1 and TRN2 #22
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Description:
This PR adds support for
[TRN1](https://developer.arm.com/documentation/ddi0602/2023-12/SIMD-FP-Instructions/TRN1--Transpose-vectors--primary--?lang=en)andTRN2from class Advanced SIMD permute.In addition, it refactors code involving Elem (non-assignment form) and Elem (assignment form). This reduces duplicated code and some unnecessary lemmas.
Testing:
The
make allsucceeds and conformance testing runs successfully on Graviton2 and Graviton3.License:
By submitting this pull request, I confirm that my contribution is
made under the terms of the Apache 2.0 license.