[clang] [llvm] [HLSL][DXIL] InterlockedOr and InterlockedOr64 builtins (PR #180804)

[Alexander Johnston via cfe-commits]

Alexander-Johnston wrote:

I've update this PR to main with the goal of using the new code added in https://github.com/llvm/llvm-project/commit/e160695032d838fdeb3ff313f99dbffc38f94a7a to provide the InterlockedOr standalone functionality. As part of this I have removed the RWByteAddressBuffer functionality, while considering how to rework it to fit this new implementation of the interlocked builtins.

https://github.com/llvm/llvm-project/pull/180804