[llvm] [LoongArch] Fix codegen for ISD::ROTR (PR #100292)

[via llvm-commits]

heiher wrote:

> > sext i64 (trunc i64 (rotr i64 %x, i64 %y) to i32) to i32
> 
> Do you mean: sext i32 (trunc i64 (rotr i64 %x, i64 %y) to i32) to i64

Yeah.

https://github.com/llvm/llvm-project/pull/100292