[llvm] [SDAG] Add missing SoftenFloatRes legalization for FMODF (PR #129264)

[Björn Pettersson via llvm-commits]

bjope wrote:

> > Or maybe we should add support in MakeLibCallOptions to denote that certain arguments are pointers (and maybe also the pointer address space).
> 
> I think this would be the easiest fix for now. Does this patch https://gist.github.com/MacDue/d9766e2b6b738824b11941194156efac solve your issue?

Thanks!
That looks pretty similar to the workaround hack I've tried downstream. So it would solve the problem

I also noticed that there seem to be (at least) three functions in math.h that is passing pointers (fmod, sincos and frexp). So the bug is present also in DAGTypeLegalizer::SoftenFloatRes_FFREXP (which can be solved by adding similar calls to setOpsTypeOverrides to override type of second argument).

https://github.com/llvm/llvm-project/pull/129264