[llvm] r342985 - [LegalizeDAG] Prune Predecessor check in ExpandExtractFromVectorThroughStack. NFCI.

[Nirav Dave via llvm-commits]

Author: niravd
Date: Tue Sep 25 08:29:57 2018
New Revision: 342985

URL: http://llvm.org/viewvc/llvm-project?rev=342985&view=rev
Log:
[LegalizeDAG] Prune Predecessor check in ExpandExtractFromVectorThroughStack. NFCI.

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp?rev=342985&r1=342984&r2=342985&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Tue Sep 25 08:29:57 2018
@@ -1248,6 +1248,7 @@ SDValue SelectionDAGLegalize::ExpandExtr
   // Caches for hasPredecessorHelper
   SmallPtrSet<const SDNode *, 32> Visited;
   SmallVector<const SDNode *, 16> Worklist;
+  Visited.insert(Op.getNode());
   Worklist.push_back(Idx.getNode());
   SDValue StackPtr, Ch;
   for (SDNode::use_iterator UI = Vec.getNode()->use_begin(),