[AArch64][GlobalISel] Fix EXTRACT_SUBREG reg classes in patterns to generate MULL. (#136083)

This fixes the GISel warning "Skipped pattern: EXTRACT_SUBREG child #0
could not be coerced to a register class" by ensuring the register class
is correct for the EXTRACT_SUBREG patterns. This most notably allows
UMADDL / SMADDL patterns to be imported (many still do not work as a
PatLeaf on a child cannot be generated at the moment).
5 files changed
tree: 1495b675a62bdc4516530cdc49a02933fba4f5f2
  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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