add fp-armv8 for ARM_ALLOWED_FEATURES For fixing err in https://github.com/rust-lang/stdarch/pull/1105.
Please read the rustc-dev-guide chapter on Backend Agnostic Codegen.
add fp-armv8 for ARM_ALLOWED_FEATURES For fixing err in https://github.com/rust-lang/stdarch/pull/1105.
Please read the rustc-dev-guide chapter on Backend Agnostic Codegen.