Fix pairs of doubles using an illegal <8 x i8> vector. #41206
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Fix pairs of doubles using an illegal <8 x i8> vector. Accidentally introduced in rust-lang#40658 and discovered in some Objective-C bindings (returning `NSPoint`). Turns out LLVM will widen element types of illegal vectors instead of increasing element count, i.e. it will zero-extend `<8 x i8>` to `<8 x i16>`, interleaving the bytes, instead of using the first 8 of `<16 x i8>`.
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Fix pairs of doubles using an illegal <8 x i8> vector. Accidentally introduced in rust-lang#40658 and discovered in some Objective-C bindings (returning `NSPoint`). Turns out LLVM will widen element types of illegal vectors instead of increasing element count, i.e. it will zero-extend `<8 x i8>` to `<8 x i16>`, interleaving the bytes, instead of using the first 8 of `<16 x i8>`.
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Accidentally introduced in #40658 and discovered in some Objective-C bindings (returning
NSPoint).Turns out LLVM will widen element types of illegal vectors instead of increasing element count, i.e. it will zero-extend
<8 x i8>to<8 x i16>, interleaving the bytes, instead of using the first 8 of<16 x i8>.