[all-commits] [llvm/llvm-project] fcdf81: [KnownBits] Add KnownBits::absdiff to compute the ...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fcdf818a7779871990214cc1035bb2c36426f459
      https://github.com/llvm/llvm-project/commit/fcdf818a7779871990214cc1035bb2c36426f459
  Author: Simon Pilgrim <RKSimon at users.noreply.github.com>
  Date:   2024-03-01 (Fri, 01 Mar 2024)

  Changed paths:
    M llvm/include/llvm/Support/KnownBits.h
    M llvm/lib/Support/KnownBits.cpp
    M llvm/unittests/Support/KnownBitsTest.cpp

  Log Message:
  -----------
  [KnownBits] Add KnownBits::absdiff to compute the absolute difference of 2 unsigned values (#82354)

Equivalent to "umax(A, B) - umin(A, B)"

This is just an initial correctness implementation, hopefully we can make this optimal in the future.



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