[llvm-branch-commits] [llvm] Revert "[RISCV] Recurse on first operand of two operand shuffles (#79180)" (PR #80238)

[Alex Bradbury via llvm-branch-commits]

https://github.com/asb approved this pull request.

In case it's helpful, explicit LGTM from me on backporting this.

@preames looks like you need to rebase

https://github.com/llvm/llvm-project/pull/80238