On Thu, Jun 12, 2025, at 00:14, Sebastian Andrzej Siewior wrote: > On x86 the bswap32/64 macro is implemenated based on the x86 opcode wich s/implemenated/implemented/ s/wich/which/ > performs the required shifting in just one opcode. > The other CPUs fallback to the generic shifting as implemented by > default_swab32() and default_bswap64() if needed. > > I've been looking at how good a compiler is at recognizing the default > shift and emitting an optimized operation: > - x86, arm64 msvc v19.20 > default_swab32() optimized > default_bswap64() shifts > _byteswap_uint64() otimized > > - x86, arm64 msvc v19.37 > default_swab32() optimized > default_bswap64() optimized > _byteswap_uint64() otimized Is it supposed to say `otimized` twice?
