[PATCH] D91589: [DAGCombiner] Fold (sext (not i1 x)) -> (add (zext i1 x), -1)

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added reviewers: efriedma, nemanjai.
RKSimon added inline comments.


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Comment at: llvm/test/CodeGen/RISCV/sext-zext-trunc.ll:477
 
-;; TODO: fold (sext (not (setcc a, b, cc))) -> (sext (setcc a, b, !cc))
+;; fold (sext (not (setcc a, b, cc))) -> (sext (setcc a, b, !cc))
 define i32 @sext_of_not_cmp_i32(i32 %x) {
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Not sure what comment should be here if RISCV doesn't actually do the fold 


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https://reviews.llvm.org/D91589