[llvm] [RISCV] Add hasSideEffects = true to ReadFRM (PR #139864)

[Gergely Futo via llvm-commits]

futog wrote:

> Does implementing `RISCVTargetLowering::getRoundingControlRegisters()` fix this?

No. As far as I understand, this is used in case of inline asm.

https://github.com/llvm/llvm-project/pull/139864