[all-commits] [llvm/llvm-project] e1e4bf: [DAGCombine] Prevent the transform of combine for ...

[RotateRight via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e1e4bf174b09bcd4b25cd624f177537890bff785
      https://github.com/llvm/llvm-project/commit/e1e4bf174b09bcd4b25cd624f177537890bff785
  Author: Sanjay Patel <spatel at rotateright.com>
  Date:   2021-09-06 (Mon, 06 Sep 2021)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
    M llvm/test/CodeGen/AArch64/arm64-srl-and.ll

  Log Message:
  -----------
  [DAGCombine] Prevent the transform of combine for multi-use operand

The test is based on a miscompile example in:
https://llvm.org/PR51321

Differential Revision: https://reviews.llvm.org/D107692