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Chris Lattner
f299184565
Fix a bogus optimization: folding (slt (zext i1 A to i32), 1) -> (slt i1 A, true)
This cause a regression in InstCombine/JavaCompare, which was doing the right thing on accident. To handle the missed case, generalize the comparisons based on masked bits a little bit to handle comparisons against the max value. For example, we can now xform (slt i32 (and X, 4), 4) -> (setne i32 (and X, 4), 4) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53443 91177308-0d34-0410-b5e6-96231b3b80d8
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