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

[Paul Kirth via llvm-commits]

ilovepi wrote:

While I'd normally agree, building clang w/ your commit hits the assertion, and one commit prior does not. 

The reproducer script should work for you. Fuchsia is always available in the compiler as a target. Everything else should just work, so long as the aarch64 backend is enabled. The reproducer is a preprocessed cpp file.



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