[libc-commits] [PATCH] D136595: [libc] Switch to new implementation of mem* functions

[Guillaume Chatelet via Phabricator via libc-commits]

gchatelet created this revision.
gchatelet added a reviewer: courbet.
Herald added subscribers: libc-commits, ecnelises, tschuett, pengfei, kristof.beyls.
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The new framework makes it explicit which processor feature is being
used and allows for easier per platform customization:

- ARM cpu now uses trivial implementations to reduce code size.
- Memcmp, Bcmp and Memmove have been optimized for x86
- Bcmp has been optimized for aarch64.

This is a reland of https://reviews.llvm.org/D135134 (b3f1d58 <https://reviews.llvm.org/rGb3f1d58a131eb546aaf1ac165c77ccb89c40d758>)


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D136595

Files:
  libc/src/stdio/printf_core/string_writer.cpp
  libc/src/string/bcmp.cpp
  libc/src/string/memcmp.cpp
  libc/src/string/memcpy.cpp
  libc/src/string/memmove.cpp
  libc/src/string/memory_utils/bcmp_implementations.h
  libc/src/string/memory_utils/bzero_implementations.h
  libc/src/string/memory_utils/memcmp_implementations.h
  libc/src/string/memory_utils/memcpy_implementations.h
  libc/src/string/memory_utils/memset_implementations.h
  libc/src/string/memory_utils/op_x86.h
  libc/src/string/mempcpy.cpp
  libc/src/string/memset.cpp

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