Revert a small part of 102372; this fixes at least one

of the dbg testsuite regressions.  I don't think this is
really the right fix; this change exposed an existing problem
upstream somewhere.

llvm-svn: 102410

1 files changed, 5 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index d663521abaf..9d239c1bd7c 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -3834,10 +3834,15 @@ SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I, unsigned Intrinsic) {
         return 0;
       DAG.AddDbgValue(SDV, N.getNode(), isParameter);
     } else {
+      // Generating Undefs here seems to be actively harmful because it
+      // affects the line numbers.
+      return 0;
+#if 0
       // This isn't useful, but it shows what we're missing.
       SDV = DAG.getDbgValue(Variable, UndefValue::get(Address->getType()),
                             0, dl, SDNodeOrder);
       DAG.AddDbgValue(SDV, 0, isParameter);
+#endif
     }
     return 0;
   }