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

[Jonas Paulsson via llvm-commits]

JonPsson1 wrote:

Thanks for help - I think I found the way to enable the building of these functions - patch updated.

I could now (for the first time? :D ) compile and run a program on SystemZ with _Float16 variables, by using `--rtlib=compiler-rt `with clang.

As I am not the expert on FP semantics, I wonder if anyone could confirm that these routines are safe and correct to use as far as FP exceptions, rounding modes, (..?) goes?

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