[llvm] [LoopVectorize] Add llvm.loop.vectorize.fp_reordering.{enable,disable} metadata (PR #219167)

[Madhur Amilkanthwar via llvm-commits]

madhur13490 wrote:

LGTM, thanks!. Please give a day or two for @fhahn in case he has some comments.

https://github.com/llvm/llvm-project/pull/219167