[llvm-branch-commits] [clang] HIP: Use builtin_nan instead of manual expansion (PR #128023)

[Matt Arsenault via llvm-branch-commits]

arsenm wrote:

> why do we want to do this if it is broken for non-literal string?

It's WIP from 3 years ago, I'm putting this up for reference 

https://github.com/llvm/llvm-project/pull/128023