[clang] [llvm] [DXIL] implement dot intrinsic lowering for integers (PR #85662)

[Nico Weber via cfe-commits]

nico wrote:

Also failing on http://45.33.8.238/linux/133623/step_7.txt

It's been broken for over an hour now. Time to revert and fix async?

https://github.com/llvm/llvm-project/pull/85662