commit 2965e69e040d86002128b91a439eb9bfc6b83df1
author Stuart Hastings <stuart@apple.com> Tue Dec 21 17:07:24 2010 +0000
committer Stuart Hastings <stuart@apple.com> Tue Dec 21 17:07:24 2010 +0000
tree 5dee656b84ba53c99f30c8c1b421486953ac2566
parent 4d75d80d62f52ce440e6af7821d785ab49f30ea7

Missing logic for nested CALLSEQ_START/END.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122342 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SelectionDAG/LegalizeDAG.cpp

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 661a7ad..a60b871 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -255,8 +255,11 @@
 static SDNode *FindCallEndFromCallStart(SDNode *Node, int depth = 0) {
   if (Node->getOpcode() == ISD::CALLSEQ_START)
     depth++;
-  if ((Node->getOpcode() == ISD::CALLSEQ_END) && (depth == 1))
-    return Node;
+  else if (Node->getOpcode() == ISD::CALLSEQ_END) {
+      depth--;
+      if (depth == 0)
+        return Node;
+    }
   if (Node->use_empty())
     return 0;   // No CallSeqEnd