Assign node order numbers to results of call instruction lowering. This should improve src line debug info when sdisel is used. rdar://9199118
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128728 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 18d5a7a..9492353 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -4927,15 +4927,19 @@
DAG.getNode(ISD::MERGE_VALUES, getCurDebugLoc(),
DAG.getVTList(&RetTys[0], RetTys.size()),
&ReturnValues[0], ReturnValues.size()));
-
}
// As a special case, a null chain means that a tail call has been emitted and
// the DAG root is already updated.
- if (Result.second.getNode())
- DAG.setRoot(Result.second);
- else
+ if (!Result.second.getNode()) {
HasTailCall = true;
+ ++SDNodeOrder;
+ AssignOrderingToNode(DAG.getRoot().getNode());
+ } else {
+ DAG.setRoot(Result.second);
+ ++SDNodeOrder;
+ AssignOrderingToNode(Result.second.getNode());
+ }
if (LandingPad) {
// Insert a label at the end of the invoke call to mark the try range. This