[llvm] [RISCV] Order the implicit defs/uses of vl/vtype on MC instructions the same as the pseudo version. (PR #129104)

[Philip Reames via llvm-commits]

https://github.com/preames approved this pull request.

LGTM

Aside: In RISCVAsmPrinter::lowerOperand, we drop the implicit operands on the floor.  Should we be asserting something about the MC instructions relations to the MI ones somewhere?

https://github.com/llvm/llvm-project/pull/129104