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

[Nikita Popov via llvm-commits]

================

----------------
nikic wrote:

We should have exhaustive testing infrastructure. On half, or one of the 8-bit types, if any of them is sufficiently IEEE compliant...

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