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Vectorize `adjacent_find` by AlexGuteniev · Pull Request #5331 · microsoft/STL · GitHub
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Vectorize adjacent_find
#5331
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StephanTLavavej
approved these changes
Mar 17, 2025
|
Thanks! 😸 I pushed minor changes and one performance fix to activate the optimization properly in C++14/17 mode. |
|
I'm mirroring this to the MSVC-internal repo - please notify me if any further changes are pushed. |
StephanTLavavej
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Mar 21, 2025
StephanTLavavej
approved these changes
Mar 22, 2025
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I had to push an additional commit because we forgot the |
StephanTLavavej
approved these changes
Mar 24, 2025
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Thanks for another vectorization PR! 😻 💚 🔍 |
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The approach is similar to
findvectorization, except for shifted load, which is similar touniquein #5092, Nothing novel 🥱This time I haven't tried to avoid double load, I trust past experience that it is faster than blending with previous value, or using not the whole vector as a step.
I calculated Speedup as Before divided by After using a spreadsheet software.