commit 5787124820f9f544216675c020ff0b33e090d181
author Devang Patel <dpatel@apple.com> Wed Aug 03 23:13:55 2011 +0000
committer Devang Patel <dpatel@apple.com> Wed Aug 03 23:13:55 2011 +0000
tree c665941420aa0b4c9ab219db6c28f58a965c8006
parent 9dbd0a866ef54f2d72ba7673096ffb4cfdb15331

Do not drop undef debug values. These are used as range termination marker by live debug variable pass.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136834 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index bedc310..438667e 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -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 {