5e841e8b4f
Microsoft's DXIL is based on LLVM, which doesn't have an integer ABS opcode, but instead needs it lowered to NEG + MAX. We need to do this with an option, to prevent an already existing optimization rule from undoing this. Reviewed-by: Eric Anholt <eric@anholt.net> Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5211>