Simon Pilgrim be6c752e15 [X86] X86FixupVectorConstantsPass - use VPMOVSX/ZX extensions for PS/PD domain moves (#122601) ...

For targets with free domain moves, or AVX512 support, allow the use of VPMOVSX/ZX extension loads to reduce the load sizes.

I've limited this to extension to i32/i64 types as we're mostly interested in shuffle mask loading here, but we could include i16 types as well just as easily.

Inspired by a regression on #122485

2025-01-12 15:59:05 +00:00

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