[libclc] [libclc] Optimize generic CLC fmin/fmax (PR #128506)

[Fraser Cormack via cfe-commits]

================
@@ -43,8 +48,10 @@ _CLC_DEF _CLC_OVERLOAD half __clc_fmin(half x, half y) {
   return (y < x) ? y : x;
----------------
frasercrmck wrote:

Makes sense, yeah. If you could take a look at what I've done to that end, that'd be great - thanks.

https://github.com/llvm/llvm-project/pull/128506