[mlir][Tensor] Generalize the pattern to swap `tensor.collapse_shape` -> `tensor.expand_shape`. (#133819)

The current patterns compared the reassocation indices for the two ops
and failed if neither of them were of size 1. This patch relaxes this
restriction by handling a new case where the reassociation indices might
be of the same size.

Also generalizes to cases where when generating the swapped
`tensor.expand_shape` -> `tensor.collapse_shape` if one of them is
degenerate, those are not generated.

Signed-off-by: MaheshRavishankar <mahesh.ravishankar@gmail.com>
2 files changed
tree: e9bf2ebb992bb23a8264374d997598b18098b2ce
  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-tidy
  30. .git-blame-ignore-revs
  31. .gitattributes
  32. .gitignore
  33. .mailmap
  34. CODE_OF_CONDUCT.md
  35. CONTRIBUTING.md
  36. LICENSE.TXT
  37. pyproject.toml
  38. README.md
  39. SECURITY.md
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