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llvm / llvm-project / 0bda492ba12c391dff99b15cd4d0149049413ebf
commit0bda492ba12c391dff99b15cd4d0149049413ebf[log] [tgz]
authorMichele Scuttari <michele.scuttari@outlook.com>Wed May 14 09:39:11 2025 +0200
committerGitHub <noreply@github.com>Wed May 14 09:39:11 2025 +0200
treeba5f7cf363074952fb3531c922bb6c4b72cafb2e
parentcf16c97bfa1416672d8990862369e86f360aa11e [diff]
[MLIR] Cache symbol tables during OneShotBufferization analyses (#138125)

During bufferization, the callee of each `func::CallOp` / `CallableOpInterface` operation is retrieved by means of a symbol table that is temporarily built for the lookup purpose. The creation of the symbol table requires a linear scan of the operation body (e.g., a linear scan of the `ModuleOp` body). Considering that functions are typically called at least once, this leads to a scaling behavior that is quadratic with respect to the number of symbols. The problem is described in the following Discourse topic: https://discourse.llvm.org/t/quadratic-scaling-of-bufferization/86122/
This patch aims to partially address this scaling issue by leveraging the `SymbolTableCollection` class, whose instance is added to the `FuncAnalysisState` extension. Later modifications are also expected to address the problem in other methods required by `BufferizableOpInterface` (e.g., `bufferize` and `getBufferType`), which suffer of the same problem but do not provide access to any bufferization state.
3 files changed
tree: ba5f7cf363074952fb3531c922bb6c4b72cafb2e
  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

The LLVM Compiler Infrastructure

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Welcome to the LLVM project!

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