Add new `rustc` target for Arm64 machines that can target the iphonesimulator This PR lands a new target (`aarch64-apple-ios-sim`) that targets arm64 iphone simulator, previously unreachable from Apple Silicon machines. resolves #81632 r? `@shepmaster`
librustc_target
contains some very low-level details that are
specific to different compilation targets and so forth.
For more information about how rustc works, see the rustc dev guide.