[clang] [llvm] Implement operand bundles for floating-point operations (PR #109798)

[Matt Arsenault via llvm-commits]

arsenm wrote:

Also it's silly that we need to do bitcode autoupgrade of "experimental" intrinsics, but x86 started shipping with strictfp enabled in production before they graduated. We might as well drop the experimental bit then 

https://github.com/llvm/llvm-project/pull/109798