[all-commits] [llvm/llvm-project] 3ab32c: [X86] Replace explicit constant handling in sub(C1...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3ab32c94a4aeb688a2df127fe14b3a7a42c71c97
      https://github.com/llvm/llvm-project/commit/3ab32c94a4aeb688a2df127fe14b3a7a42c71c97
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2021-02-21 (Sun, 21 Feb 2021)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp

  Log Message:
  -----------
  [X86] Replace explicit constant handling in sub(C1, xor(X, C2)) -> add(xor(X, ~C2), C1+1) fold. NFCI.

NFC cleanup before adding vector support - rely on the SelectionDAG to handle everything for us.