[llvm] [RISCV] Select Zvkb VANDN for shorter constant loading sequences (PR #123345)

[Piotr Fusik via llvm-commits]

pfusik wrote:

> The RISCVDAGToDAGISel::selectInvLogicImm is getting executed when I tried to test it.

You are right, thank you.
I made a stupid mistake of debugging `clang` while building only `llc`.

https://github.com/llvm/llvm-project/pull/123345