[clang] [llvm] [RISCV] Add back SiFive's cdiscard.d.l1 and cflush.d.l1 instructions. (PR #83896)

[Craig Topper via llvm-commits]

topperc wrote:

> Thanks for clearing the confusion around whether rs1 would be optional or not. Can we also add lit tests for the aliases?

I already addded tests https://github.com/llvm/llvm-project/pull/83896/commits/f6f43e9f8ffa8b58d63178d28c826d0009de2f3b

https://github.com/llvm/llvm-project/pull/83896