commit e0cf6397fd266caeb3e9ca46686264fb6a3f9b3a
author Hal Finkel <hfinkel@anl.gov> Mon Apr 16 03:33:22 2012 +0000
committer Hal Finkel <hfinkel@anl.gov> Mon Apr 16 03:33:22 2012 +0000
tree f8087fc7a68caa9f176d9b7a86f224a153c82467
parent 247b4d54edbd610b9dc8907443fdf23081a8df67

Remove dead SD nodes after the combining pass. Fixes PR12201.

llvm-svn: 154786

llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index d1b998f..0914c66 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -1080,6 +1080,7 @@
 
   // If the root changed (e.g. it was a dead load, update the root).
   DAG.setRoot(Dummy.getValue());
+  DAG.RemoveDeadNodes();
 }
 
 SDValue DAGCombiner::visit(SDNode *N) {