[llvm-commits] [llvm] r136834 - /llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp

[Devang Patel]

Author: dpatel
Date: Wed Aug  3 18:13:55 2011
New Revision: 136834

URL: http://llvm.org/viewvc/llvm-project?rev=136834&view=rev
Log:
Do not drop undef debug values. These are used as range termination marker by live debug variable pass.


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

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp?rev=136834&r1=136833&r2=136834&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp Wed Aug  3 18:13:55 2011
@@ -4515,7 +4515,7 @@
     // debug info exists.
     ++SDNodeOrder;
     SDDbgValue *SDV;
-    if (isa<ConstantInt>(V) || isa<ConstantFP>(V)) {
+    if (isa<ConstantInt>(V) || isa<ConstantFP>(V) || isa<UndefValue>(V)) {
       SDV = DAG.getDbgValue(Variable, V, Offset, dl, SDNodeOrder);
       DAG.AddDbgValue(SDV, 0, false);
     } else {