[all-commits] [llvm/llvm-project] ba1255: [DAG] Use FoldConstantArithmetic to constant fold ...

[Simon Pilgrim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ba1255def64a9c3c68d97ace051eec76f546eeb0
      https://github.com/llvm/llvm-project/commit/ba1255def64a9c3c68d97ace051eec76f546eeb0
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2024-10-20 (Sun, 20 Oct 2024)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

  Log Message:
  -----------
  [DAG] Use FoldConstantArithmetic to constant fold (and (ext (and V, c1)), c2) -> (and (ext V), (and c1, (ext c2)))

Noticed while triaging the regression from #112710 noticed by @mstorsjo - don't rely on isConstantIntBuildVectorOrConstantInt+getNode to guarantee constant folding (if it fails to constant fold it will infinite loop), use FoldConstantArithmetic instead.



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications