[llvm] [LangRef] Clarify specification for float min/max operations (PR #172012)

[Phoebe Wang via llvm-commits]

phoebewang wrote:

> I put up #174720 to explicitly document that performance of legacy bitcode is a secondary consideration

A good step. But I think we lack the broad user who care about it to give the feedback, until they perceive from codegen change.

https://github.com/llvm/llvm-project/pull/172012