[PATCH] D90924: [ConstantRange] Sign-flipping of signedness-invariant comparisons

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri created this revision.
Herald added subscribers: llvm-commits, dexonsmith, hiraditya.
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lebedev.ri requested review of this revision.

Not very sure how useful this is.
I initially thought this could be used to help with unsigned comparisons,
but i'm not sure yet if that's actually a correct usage in `ScalarEvolution::isImpliedViaOperations()`.

Not sure how to generalize `ConstantRange::areInsensitiveToSignednessOfSwappedICmpPredicate()`


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D90924

Files:
  llvm/include/llvm/IR/ConstantRange.h
  llvm/lib/Analysis/ScalarEvolution.cpp
  llvm/lib/IR/ConstantRange.cpp
  llvm/lib/Transforms/Scalar/CorrelatedValuePropagation.cpp
  llvm/test/Transforms/CorrelatedValuePropagation/range.ll
  llvm/unittests/IR/ConstantRangeTest.cpp

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