[all-commits] [llvm/llvm-project] 9b114c: [libc++] Optimize fstream::read (#165223)

[Nikolas Klauser via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 9b114c5d9aa5e5ccf1aa89d9933c6ffaa1214386
      https://github.com/llvm/llvm-project/commit/9b114c5d9aa5e5ccf1aa89d9933c6ffaa1214386
  Author: Nikolas Klauser <nikolasklauser at berlin.de>
  Date:   2025-11-07 (Fri, 07 Nov 2025)

  Changed paths:
    M libcxx/docs/ReleaseNotes/22.rst
    M libcxx/include/fstream
    A libcxx/test/benchmarks/streams/fstream.bench.cpp
    R libcxx/test/benchmarks/streams/ofstream.bench.cpp
    M libcxx/test/libcxx/input.output/file.streams/fstreams/filebuf/traits_mismatch.verify.cpp
    M libcxx/test/libcxx/input.output/file.streams/fstreams/traits_mismatch.verify.cpp

  Log Message:
  -----------
  [libc++] Optimize fstream::read (#165223)

```
Benchmark         old       new    Difference    % Difference
-----------  --------  --------  ------------  --------------
bm_read       2468.45    736.27      -1732.18         -70.17%
```



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