[llvm] [DAG] computeKnownFPClass - add ISD::EXTRACT_SUBVECTOR/INSERT_SUBVECTOR handling. (PR #190378)

[via llvm-commits]

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+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
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Xylecrack wrote:

done.

https://github.com/llvm/llvm-project/pull/190378