[llvm] [RISCV] Insert a freeze before converting select to AND/OR. (PR #84232)

[Nikita Popov via llvm-commits]

nikic wrote:

Keep in mind that we still do the logical and/or -> bitwise and/or fold in generic DAGCombine. That's the really big offender in terms of poison safety in SDAG.

https://github.com/llvm/llvm-project/pull/84232