[llvm] [SPARC][IAS] Make 64-bit instructions available in 32-bit mode on V9 (PR #187534)

[Sergei Barannikov via llvm-commits]

s-barannikov wrote:

I always forget the difference between Is64Bit and HasV9 predicates, sparc and sparcv9 triples, etc. And spend like an hour googling.
Can you maybe come up with a comment somewhere in td files that clarifies a difference between all of these, which are compatible with which etc.? It would be nice to mention V8+ as well.


https://github.com/llvm/llvm-project/pull/187534