[all-commits] [llvm/llvm-project] ffe418: [Support] Add KnownBits::abds signed absolute diff...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ffe41819e58365dfbe85a22556c0d9d284e746b9
      https://github.com/llvm/llvm-project/commit/ffe41819e58365dfbe85a22556c0d9d284e746b9
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2024-03-12 (Tue, 12 Mar 2024)

  Changed paths:
    M llvm/include/llvm/Support/KnownBits.h
    M llvm/lib/Support/KnownBits.cpp
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/unittests/Support/KnownBitsTest.cpp

  Log Message:
  -----------
  [Support] Add KnownBits::abds signed absolute difference and rename absdiff -> abdu (#84897)

When I created KnownBits::absdiff, I totally missed that we already have ISD::ABDS/ABDU nodes, and we use this term in other places/targets as well.

I've added the KnownBits::abds implementation and renamed KnownBits::absdiff to KnownBits::abdu.

Followup to #84791



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