[all-commits] [llvm/llvm-project] fe1f36: [X86][SSE] combineShuffleWithHorizOp - avoid unnec...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: fe1f36986b23a67c218d7ca24741d5ebd6886473
      https://github.com/llvm/llvm-project/commit/fe1f36986b23a67c218d7ca24741d5ebd6886473
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2020-08-11 (Tue, 11 Aug 2020)

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

  Log Message:
  -----------
  [X86][SSE] combineShuffleWithHorizOp - avoid unnecessary subtraction. NFCI.

We can safely replace ((M - NumElts) % NumEltsPerLane) with (M % NumEltsPerLane) as the modulo result will be the same.