4d92601715
GFX6 doesn't have V_FLOOR_F64, it needs to be lowered. Loosely based on the AMDGPU LLVM backend. Introduce a new function because it will be useful for some other 64-bit operations. Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com> Reviewed-by: Daniel Schürmann <daniel@schuermann.dev> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3477>