[GVN] Handle scalable vectors with the same size in VNCoercion (#123984)

This allows us to forward to a load even if the types do not match
(nxv4i32 vs nxv2i64 for example). Scalable types are allowed in
canCoerceMustAliasedValueToLoad so long as the size (minelts *
scalarsize) is the same, and some follow-on code is adjusted to make
sure it handles scalable sizes correctly. Methods like
analyzeLoadFromClobberingWrite and analyzeLoadFromClobberingStore still
do nothing for scalable vectors, as Offsets and mismatching types are
not supported.
2 files changed
tree: f03de71b5023506430241516b3a73aec1648af38
  1. .ci/
  2. .github/
  3. bolt/
  4. clang/
  5. clang-tools-extra/
  6. cmake/
  7. compiler-rt/
  8. cross-project-tests/
  9. flang/
  10. libc/
  11. libclc/
  12. libcxx/
  13. libcxxabi/
  14. libunwind/
  15. lld/
  16. lldb/
  17. llvm/
  18. llvm-libgcc/
  19. mlir/
  20. offload/
  21. openmp/
  22. polly/
  23. pstl/
  24. runtimes/
  25. third-party/
  26. utils/
  27. .clang-format
  28. .clang-tidy
  29. .git-blame-ignore-revs
  30. .gitattributes
  31. .gitignore
  32. .mailmap
  33. CODE_OF_CONDUCT.md
  34. CONTRIBUTING.md
  35. LICENSE.TXT
  36. pyproject.toml
  37. README.md
  38. SECURITY.md
README.md

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