Vectorize replace_copy for x64 / x86 manually
#5980
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+292
−74
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StephanTLavavej
approved these changes
Jan 6, 2026
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Thanks! 😻 I pushed significant changes, please double-check. |
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All good |
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I'm mirroring this to the MSVC-internal repo - please notify me if any further changes are pushed. |
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🐱 😻 😸 |
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Fix #5908
The auto vectorization recipe applied in #4431 did not work in 17.14.
Another recipe would have worked, but it does not work in the latest Insiders.
So chasing the compiler auto vectorization here appears to be unproductive.
Do not help the compiler ™️
Benchmark results
rc<std::uint8_t>rc<std::uint16_t>rc<std::uint32_t>rc<std::uint64_t>