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

[Matt Arsenault via llvm-commits]

arsenm wrote:

> If we can't keep the constrained semantics and near-100% guarantee that no new exceptions will be introduced then operand bundles are not a replacement for the constrained intrinsics.

We would still need a call / function attribute to indicate strictfp calls, and such calls would then be annotatable with bundles to relax the assumptions. The default would always have to be the most conservative assumption 



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