[all-commits] [llvm/llvm-project] b6088f: [ConstantRange] Handle wrapping range in binaryNot()

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b6088f7465a9a6691d5d237e9c0eb002734da3bf
      https://github.com/llvm/llvm-project/commit/b6088f7465a9a6691d5d237e9c0eb002734da3bf
  Author: Nikita Popov <nikita.ppv at gmail.com>
  Date:   2021-02-20 (Sat, 20 Feb 2021)

  Changed paths:
    M llvm/lib/IR/ConstantRange.cpp
    M llvm/unittests/IR/ConstantRangeTest.cpp

  Log Message:
  -----------
  [ConstantRange] Handle wrapping range in binaryNot()

We don't need any special handling for wrapping ranges (or empty
ranges for that matter). The sub() call will already compute a
correct and precise range.

We only need to adjust the test expectation: We're now computing
an optimal result, rather than an unsigned envelope.