[llvm] ValueTracking: Identify implied fp classes by general fcmp (PR #66505)

[Matt Arsenault via llvm-commits]

arsenm wrote:

> > > > @akuegel remember this test failure in TF last week? maybe you have additional information here?
> > > 
> > > 
> > > I have debugged now which class is detected, and it is `FPClassTest::fcPosInf`. Does that help?

> Unfortunately my knowledge about the LLVM side is quite limited. I don't know how to create a reproducer for this, I tried my best to at least debug with what FPClassTest value we are hitting the assert.


Can you try again? My best guess is you haven't linked in __nv_fmodf, so this is just a stub

https://github.com/llvm/llvm-project/pull/66505