From a3bb86dd6b6220c69d9d7e4e11aea42fa1ec2bc5 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 12 Jun 2006 18:25:29 +0000
Subject: [PATCH] Make sure to update the CFG correctly if a switch only has a
 default dest. This fixes CodeGen/Generic/2006-06-12-LowerSwitchCrash.ll

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28755 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 0a9cb637b47..1c8714d7d3e 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -869,6 +869,7 @@ void SelectionDAGLowering::visitSwitch(SwitchInst &I) {
     if (DefaultMBB != NextBlock)
       DAG.setRoot(DAG.getNode(ISD::BR, MVT::Other, getRoot(),
                               DAG.getBasicBlock(DefaultMBB)));
+    CurMBB->addSuccessor(DefaultMBB);
     return;
   }