From 8c5bfcaa29f20e0d1084b48e4fe8c1945e541d54 Mon Sep 17 00:00:00 2001
From: Stuart Hastings <stuart@apple.com>
Date: Tue, 21 Dec 2010 17:07:24 +0000
Subject: Missing logic for nested CALLSEQ_START/END.

llvm-svn: 122342
---
 llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

(limited to 'llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp')

diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 661a7ad6d87..a60b8719372 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -255,8 +255,11 @@ void SelectionDAGLegalize::LegalizeDAG() {
 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
 
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