[PATCH] D122757: [InstCombine] Fold (ctpop(X) == N) || (X != 0) into X != 0 where N > 0

[Hirochika Matsumoto via Phabricator via llvm-commits]

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(ctpop(X) == N) || (X != 0) --> (X != 0) https://alive2.llvm.org/ce/z/hYL5C2 (for N = 10)
(ctpop(X) != N) && (X == 0) --> (X == 0) https://alive2.llvm.org/ce/z/oLkMvI (for N = 15)


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D122757

Files:
  llvm/lib/Transforms/InstCombine/InstCombineAndOrXor.cpp
  llvm/test/Transforms/InstCombine/ispow2.ll

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