[llvm] [X86][CodeGen] Add base trig intrinsic lowerings (PR #96222)

[Farzon Lotfi via llvm-commits]

farzonl wrote:

@efriedma-quic are you happy with the constraint intrinsic side of things? Also  @topperc thank you for the lgtm, could you also click the aprove button?

https://github.com/llvm/llvm-project/pull/96222