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Sanjay Patel
756b38c9d2
The code comments didn't match the code logic, and we didn't actually distinguish the fake unary (not/neg/fneg) operators from arguments. Adding another level to the weighting scheme provides more structure and can help simplify the pattern matching in InstCombine and other places. I fixed regressions that would have shown up from this change in: rL290067 rL290127 But that doesn't mean there are no pattern-matching logic holes left; some combines may just be missing regression tests. Should fix: https://llvm.org/bugs/show_bug.cgi?id=28296 Differential Revision: https://reviews.llvm.org/D27933 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294049 91177308-0d34-0410-b5e6-96231b3b80d8
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