[clang] [llvm] [PowerPC] _Float16 scalar datatype support for Power8+ (PR #196559)

[Nikita Popov via cfe-commits]

https://github.com/nikic requested changes to this pull request.

If you *really* want to introduce a separate ABI option for _Float16 (what's the motivation for doing this, instead of specifying _Float16 in the PowerPC psABI?) this needs to be added as an actual additional ABI variant (like elfv2-float16), not a target feature. Target features should not change the ABI.

https://github.com/llvm/llvm-project/pull/196559