[clang] [llvm] [mlir] [clang][NVPTX][MLIR][NVVM] Add overloaded fadd intrinsics (PR #221681)

[Srinivasa Ravi via llvm-commits]

Wolfram70 wrote:

This is a clone of https://github.com/llvm/llvm-project/pull/217336 after the original PR bugged out and added spurious commits after a rebase.

https://github.com/llvm/llvm-project/pull/221681