[llvm] [DXIL] Implement pow lowering (PR #86733)

[Paul Kirth via llvm-commits]

ilovepi wrote:

>But if you can provide instructions on how to cross build for fuscia/arm64 I’ll investigate.

The bot in question is cross compiling a normal linux toolchain for use in building Fuchsia on arm64 hosts. You should be able to replicate this issues w/ any x86_64 build of clang AFAIK.

https://github.com/llvm/llvm-project/pull/86733