[clang] [compiler-rt] [llvm] [SystemZ] Add support for half (fp16) (PR #109164)

[Trevor Gross via cfe-commits]

tgross35 wrote:

> > By the way, these sites are pretty helpful for double checking float reprs https://float.exposed https://weitz.de/ieee/.
> 
> I tried float.exposed but I couldn't really convert an f16 hex to a double hex. Is it supposed to be able to do this?

It should, on the `half` page you can paste the int repr into "Raw Hexadecimal Integer Value", then click `float` or `double` at the top. I don't use it too much for that though, mostly exploding into sign/exponent/mantissa when debugging soft floats. 

https://github.com/llvm/llvm-project/pull/109164