[llvm] [LLVM][IR] Add constant range support for floating-point types (PR #86483)

[Thorsten Schütt via llvm-commits]

tschuett wrote:

https://github.com/llvm/llvm-project/blob/edcf65d40c4160db0a888e801560a671b10179d2/llvm/lib/CodeGen/GlobalISel/CombinerHelper.cpp#L6760

https://github.com/llvm/llvm-project/pull/86483