handle the case where a node can become ready to process

multiple times due to a RAUW.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46680 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
index 85a96a8e26..76b7527f68 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
@@ -234,7 +234,8 @@ namespace {
       // Node updates can mean pretty much anything.  It is possible that an
       // operand was set to something already processed (f.e.) in which case
       // this node could become ready.  Recompoute its flags.
-      DTL.ReanalyzeNodeFlags(N);
+      if (N->getNodeId() != DAGTypeLegalizer::ReadyToProcess)
+        DTL.ReanalyzeNodeFlags(N);
     }
   };
 }