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Since r234249, i1 are sext instead of zext; because of that, doing "CMP rN, #0; IT EQ/NE" isn't correct anymore. "TST #1" is the conservatively correct alternative - the tradeoff being that it doesn't have a 16-bit encoding -, so use that instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236569 91177308-0d34-0410-b5e6-96231b3b80d8