[all-commits] [llvm/llvm-project] c4d7ea: [llvm-debuginfo-analyzer] Apply various memory sav...

[Javier Lopez-Gomez via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c4d7ea8049688a1d6d6d93129893fd1700a9f7e5
      https://github.com/llvm/llvm-project/commit/c4d7ea8049688a1d6d6d93129893fd1700a9f7e5
  Author: Javier Lopez-Gomez <javier.lopez.gomez at proton.me>
  Date:   2025-06-18 (Wed, 18 Jun 2025)

  Changed paths:
    M llvm/include/llvm/DebugInfo/LogicalView/Core/LVElement.h
    M llvm/include/llvm/DebugInfo/LogicalView/Core/LVScope.h
    M llvm/include/llvm/DebugInfo/LogicalView/Core/LVSupport.h

  Log Message:
  -----------
  [llvm-debuginfo-analyzer] Apply various memory savings in Core/LVxxx base classes (#144399)

This small changelist reduces memory footprint of instances of the Core
classes. Specifically,

- For `LVProperties`, use underlying type of `uint32_t` if there are at
most 32 properties to keep track of. Otherwise, fallback to the generic
`std::bitset<N>`.
The use of `llvm::SmallBitVector` is disregarded in this case, as the
upper bound on the size of the bitset can be determined statically (no
heap alloc ever needed).
- Reorder members in `LVElement` s.t. padding between members is
reduced.
- `LVScopeCompileUnit`: fix a couple of members which should be `static
constexpr` instead.



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