[all-commits] [llvm/llvm-project] 87a3f1: [Hexagon] Better detection of impossible completio...

[Krzysztof Parzyszek via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 87a3f1ab3b03923f069af3c6d3c0a92871de511e
      https://github.com/llvm/llvm-project/commit/87a3f1ab3b03923f069af3c6d3c0a92871de511e
  Author: Krzysztof Parzyszek <kparzysz at quicinc.com>
  Date:   2022-12-05 (Mon, 05 Dec 2022)

  Changed paths:
    M llvm/lib/Target/Hexagon/HexagonISelDAGToDAGHVX.cpp
    A llvm/test/CodeGen/Hexagon/autohvx/isel-shuffle-no-perfect-completion.ll

  Log Message:
  -----------
  [Hexagon] Better detection of impossible completions to perfect shuffles

If there is an entry P that has C bits set, it could become one of C
different possibilities. If P occurs more than C times, then there are
no valid completions.