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Note: The 'and' case in foldCastedBitwiseLogic() is inheriting one extra check from the nearly identical 'or' case: if ((!isa<ICmpInst>(Cast0Src) || !isa<ICmpInst>(Cast1Src)) But I'm not sure how to expose that difference in a regression test. Without that check, the 'or' path will infinite loop on: test/Transforms/InstCombine/zext-or-icmp.ll because the zext-or-icmp fold is attempting a reverse transform. The refactoring should extend to the 'xor' case next to solve part of PR26702. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@261707 91177308-0d34-0410-b5e6-96231b3b80d8
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