HLSL intrinsic expansion cleanup - preserve/apply attributes/tail call/FMF consistently #109717
Description
We need to determine and consistently apply an agreed upon approach in llvm/lib/Target/DirectX/DXILIntrinsicExpansion.cpp, when it comes to preserving call Attributes and TailCall state on generated intrinsic calls based on the original intrinsic call, as well as any needed FastMathFlags preservation.
AC
- Get consensus on a plan
- PR that makes DXILIntrinsicExpansion.cpp is consistent (and any divergence is explained in the file) so that future additions can follow the established pattern.