Use a generic type to implement SIMD types in core_arch::simd and avoid unsafe fn in more tests#1987

sayantn merged 3 commits intorust-lang:mainrust-lang/stdarch:mainfrom

eduardosm:generic-simd-type-avoid-unsafe-testseduardosm/rust-stdarch:generic-simd-type-avoid-unsafe-testsCopy head branch name to clipboard