Fangrui Song 753028bc81
[Xtensa] Move XtensaUtils to MCTargetDesc
PR #121118 attempted to introduce `checkRegister` used by
XtensaDisassembler. Since `checkRegister` and other functions in
XtensaUtils.cpp cannot link against XtensaCodeGen, move them to
XtensaDesc, which can be used by XtensaDisassembler.

Pull Request: https://github.com/llvm/llvm-project/pull/123969
2025-01-25 22:04:03 -08:00
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