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f5dc5ae36b
A few things: - computeKnownBits is relatively expensive, let's delay its use as long as we can. - Don't create two APInt values just to run computeKnownBits on a ConstantInt, we already know the exact value! - Avoid creating a temporary APInt value in order to calculate unary negation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222092 91177308-0d34-0410-b5e6-96231b3b80d8
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