[PR] arch/risc-v: add llvm experimental extensions into command line [nuttx]

["anchao (via GitHub)" <gi...@apache.org>]

anchao opened a new pull request, #12176:
URL: https://github.com/apache/nuttx/pull/12176

   
   ## Summary
   
   arch/risc-v: add llvm experimental extensions into command line
   
   LLVM supports (to various degrees) a number of experimental extensions. All experimental extensions have experimental- as a prefix. There is explicitly no compatibility promised between versions of the toolchain, and regular users are strongly advised not to make use of experimental extensions before they reach ratification.
   
   Fix compile error:
   `riscv64-unknown-elf-clang: error: invalid arch name 'rv64gcv_zfh_zvfh', requires '-menable-experimental-extensions' for experimental extension 'zvfh'`
   
   
   ## Impact
   
   N/A
   
   ## Testing
   
   riscv llvm


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Re: [PR] arch/risc-v: add llvm experimental extensions into command line [nuttx]

["xiaoxiang781216 (via GitHub)" <gi...@apache.org>]

xiaoxiang781216 merged PR #12176:
URL: https://github.com/apache/nuttx/pull/12176


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