[clang] [llvm] [ARM] Armv8-R does not require fp64 or neon. (PR #88287)

[David Green via llvm-commits]

davemgreen wrote:

As far as I understand this will remove the tuning we do for cortex-r52 when using armv8r, which will mean a little less performance but the tuning features in the Arm backend are not handled as well as they could be.

Can you add release note explaining what will change? Thanks.

https://github.com/llvm/llvm-project/pull/88287