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

[Sirui Mu via Phabricator via libcxx-commits]

Lancern updated this revision to Diff 477688.
Lancern added a comment.

[libc++abi] Improve performance of __dynamic_cast

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

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D138005/new/

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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