[all-commits] [llvm/llvm-project] 770d1e: [X86][SSE] isHorizontalBinOp - reuse any existing ...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 770d1e0a8828010a7c95de4596e24d54ed2527c3
      https://github.com/llvm/llvm-project/commit/770d1e0a8828010a7c95de4596e24d54ed2527c3
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2021-01-18 (Mon, 18 Jan 2021)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/haddsub-shuf.ll
    M llvm/test/CodeGen/X86/haddsub-undef.ll

  Log Message:
  -----------
  [X86][SSE] isHorizontalBinOp - reuse any existing horizontal ops.

If we already have similar horizontal ops using the same args, then match that, even if we are on a target with slow horizontal ops.