[llvm] [RISCV] Only convert volatile i64 load/store to Zilsd in SelectionDAG. (PR #169529)

[Christian Herber via llvm-commits]

christian-herber-nxp wrote:

embench-iot 1.0:

<img width="2174" height="1013" alt="image" src="https://github.com/user-attachments/assets/bf9c7551-adeb-4963-82fc-59fb048df0b3" />

The cubic benchmark seems to be exposing a weakness in both approaches. Might be worthwhile to dive deeper into that.

eembc:

<img width="2174" height="1013" alt="image" src="https://github.com/user-attachments/assets/20eb6969-d521-4a66-b26c-5ee6bf7b4e6e" />



https://github.com/llvm/llvm-project/pull/169529