[all-commits] [llvm/llvm-project] 7cf567: [ConstantRange] Calculate precise range for multip...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7cf567d46121f4aa8f659554b5e8584cd0fac056
      https://github.com/llvm/llvm-project/commit/7cf567d46121f4aa8f659554b5e8584cd0fac056
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2023-06-23 (Fri, 23 Jun 2023)

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

  Log Message:
  -----------
  [ConstantRange] Calculate precise range for multiply by -1

These are pretty common in SCEV, so make sure we get a precise
result by mapping to the sub() operation.