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

[Jonas Paulsson via llvm-commits]

JonPsson1 wrote:

> Note that you need to also have softPromoteHalfType return true to get correct legalization for half operations.

Thanks for pointing that out - patch updated.

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