[Bug target/124448] RISC-V: Extract from tuple vector with lmul<1 may cause bad code generation

[wangzicong at masscore dot cn]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124448

--- Comment #5 from Zicong Wang <wangzicong at masscore dot cn> ---
Thanks Robin, I am going to take this problem and send a patch.