<xutility>: Extend vectorization condition for _Synth_three_way
#5078
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StephanTLavavej
approved these changes
Nov 12, 2024
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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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Thanks for noticing and extending this optimization! 🦅 👁️ 🛰️ |
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When
three_way_comparable_with<const _Elem1&, const _Elem2&>is satisfied,_Synth_three_waybehaves same ascompare_three_way. So we should also consider three-way comparison via_Synth_three_wayto be vectorizable.The change is expected to make more comparisons between contiguous containers vectorized.
I think existing test coverages are sufficient.