[llvm] [RISCV] tt-ascalon-d8 vector scheduling (PR #167066)

[Min-Yih Hsu via llvm-commits]

mshockwave wrote:

> Vector tests have been "borrowed" from another in-tree arch 😄

yeah speaking of this, we really should a more elegant way to clean up -- potentially centralize -- all scheduling model tests. Otherwise it's really easy to miss test coverage.

https://github.com/llvm/llvm-project/pull/167066