[llvm] Reland "[GlobalISel][LLT] Introduce FPInfo for LLT (Enable bfloat, ppc128float and others in GlobalISel) (#155107)" (PR #188502)

[Alexis Engelke via llvm-commits]

aengelke wrote:

I'm not objecting -- I've personally given up on GISel c-t performance anyway.

https://github.com/llvm/llvm-project/pull/188502