[llvm] [RISCV][GlobalISel] Vector Extension vadd Legalizer (PR #71400)

[via llvm-commits]

tschuett wrote:

The title hints at that he wants to legalize vadd for RISC-V in GiSel. I would expect to see changes to:
https://github.com/llvm/llvm-project/blob/main/llvm/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp
But that currently does not work.

https://github.com/llvm/llvm-project/pull/71400