[PATCH] D155328: [RISCV] Add a DAG combine for (czero_eq X, (xor Y, 1)) -> (czero_ne X, Y) if Y is 0 or 1.

[Mikhail Gudim via Phabricator via llvm-commits]

mgudim added a comment.

LGTM, but it seems weird to me that we have to re-implement such basic optimisations instead of generic code doing this.  @craig.topper @asb I know I asked this is the call, but I still don't understand why we emit target-specific node for SELECT so early?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D155328/new/

https://reviews.llvm.org/D155328