[MIPS] Add FeatureMSA to i6400 and i6500 cores (#134985)

- Enable 'FeatureMSA' for MIPS i6400 and i6500 cpu.
- Enable -mmsa option if mcpu is set to either i6400 or i6500
- added clang driver test to validate msa feature
- added llvm codegen test to validate msa instructions for cpu i6500 and
i6400

MIPS i6400 and i6500 cores implements and enables MSA (MIPS SIMD
ARCHITECTURE) by default.
4 files changed
tree: 188521d970fa3057dc702dca62cc576aa97a09e3
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. flang-rt/
  11. libc/
  12. libclc/
  13. libcxx/
  14. libcxxabi/
  15. libunwind/
  16. lld/
  17. lldb/
  18. llvm/
  19. llvm-libgcc/
  20. mlir/
  21. offload/
  22. openmp/
  23. polly/
  24. pstl/
  25. runtimes/
  26. third-party/
  27. utils/
  28. .clang-format
  29. .clang-format-ignore
  30. .clang-tidy
  31. .git-blame-ignore-revs
  32. .gitattributes
  33. .gitignore
  34. .mailmap
  35. CODE_OF_CONDUCT.md
  36. CONTRIBUTING.md
  37. LICENSE.TXT
  38. pyproject.toml
  39. README.md
  40. SECURITY.md
README.md

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