[libcxx-commits] [PATCH] D138005: [libc++abi] Improve performance of __dynamic_cast

[Sirui Mu via Phabricator via libcxx-commits]

Lancern created this revision.
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Herald added a reviewer: libc++abi.

The original __dynamic_cast implementation does not use the ABI-provided src2dst_offset parameter which helps improve performance on the hot paths. This patch improves the performance on the hot paths in __dynamic_cast by leveraging hints provided by the src2dst_offset parameter. This patch also includes a performance benchmark suite for the __dynamic_cast implementation.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D138005

Files:
  libcxx/benchmarks/CMakeLists.txt
  libcxx/benchmarks/libcxxabi/dynamic_cast.bench.cpp
  libcxxabi/src/private_typeinfo.cpp

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