swift

592d72bb - Concrete SIMD.init(repeating:) and SIMD.init(lowHalf:highHalf:) optimizations (#81766)

Concrete SIMD.init(repeating:) and SIMD.init(lowHalf:highHalf:) optimizations (#81766) WIP to add more overloads to optimize SIMD codegen on concrete types. Here we do: - init(repeating:) - init(lowHalf:highHalf:) These are always inlined, even in debug, since LLVM knows how to lower them to one or two instructions on the targets that we care about.