[all-commits] [llvm/llvm-project] 93f3d7: [Reassociate] Guard `add`-like `or` conversion int...

[Roman Lebedev via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 93f3d7f7b3a902ad9e90ef0d9bf147582a2cf620
      https://github.com/llvm/llvm-project/commit/93f3d7f7b3a902ad9e90ef0d9bf147582a2cf620
  Author: Roman Lebedev <lebedev.ri at gmail.com>
  Date:   2020-11-04 (Wed, 04 Nov 2020)

  Changed paths:
    M llvm/lib/Transforms/Scalar/Reassociate.cpp
    M llvm/test/Transforms/Reassociate/add-like-or.ll

  Log Message:
  -----------
  [Reassociate] Guard `add`-like `or` conversion into an `add` with profitability check

This is slightly better compile-time wise,
since we avoid potentially-costly knownbits analysis that will
ultimately not allow us to actually do anything with said `add`.