[llvm-commits] [llvm] r53874 - /llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp

[Dan Gohman]

Author: djg
Date: Mon Jul 21 16:04:07 2008
New Revision: 53874

URL: http://llvm.org/viewvc/llvm-project?rev=53874&view=rev
Log:
After early-lowering the FORMAL_ARGUMENTS node, delete it.

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

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp?rev=53874&r1=53873&r2=53874&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp Mon Jul 21 16:04:07 2008
@@ -4686,6 +4686,13 @@
           (Result->getNumValues()+1 == TmpRes.Val->getNumValues() &&
            TmpRes.getValue(Result->getNumValues()).getValueType() == MVT::Flag))
          && "Lowering produced unexpected number of results!");
+
+  // The FORMAL_ARGUMENTS node itself is likely no longer needed.
+  if (Result != TmpRes.Val && Result->use_empty()) {
+    HandleSDNode Dummy(DAG.getRoot());
+    DAG.RemoveDeadNode(Result);
+  }
+
   Result = TmpRes.Val;
   
   unsigned NumArgRegs = Result->getNumValues() - 1;