[mlir][EmitC] Add pass to wrap a func in class (#141158)

Goal: Enable using C++ classes to AOT compile models for MLGO.

This commit introduces a transformation pass that converts standalone
`emitc.func` operations into `emitc.class `structures to support
class-based C++ code generation for MLGO.

Transformation details:
- Wrap `emitc.func @func_name` into `emitc.class @Myfunc_nameClass`
- Converts function arguments to class fields with preserved attributes
- Transforms function body into an `execute()` method with no arguments
- Replaces argument references with `get_field` operations

Before: emitc.func @Model(%arg0, %arg1, %arg2) with direct argument
access
After: emitc.class with fields and execute() method using get_field
operations

This enables generating C++ classes that can be instantiated and
executed as self-contained model objects for AOT compilation workflows.
9 files changed
tree: 68f6734a0046db4116b62ee3013220f983c9f06c
  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. runtimes/
  25. third-party/
  26. utils/
  27. .clang-format
  28. .clang-format-ignore
  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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