[mlir][sparse] allow multiple COO segments in sparse encodings. (#91786)

**NOTE**: we still have implementation holes when handling multiple COO
segments in the encoding. But the format should be considered to be
legal.

GitOrigin-RevId: 13af97a70e7202507dcca89d2f732e5126d2bbcd
2 files changed
tree: f2f2b5026213eb1b98330c998bc66b39977d5dcd
  1. benchmark/
  2. cmake/
  3. docs/
  4. examples/
  5. include/
  6. lib/
  7. python/
  8. test/
  9. tools/
  10. unittests/
  11. utils/
  12. .clang-format
  13. .clang-tidy
  14. CMakeLists.txt
  15. LICENSE.TXT
  16. README.md
README.md

Multi-Level Intermediate Representation

See https://mlir.llvm.org/ for more information.