From efb9b813fa74d3134dd185df10f6577ceab72bcd Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Fri, 14 Jul 2006 23:08:47 +0000
Subject: [PATCH] Add an out-of-line virtual function to home class.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29154 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/CodeGen/MachineFunctionPass.h | 3 ++-
 lib/CodeGen/MachineFunction.cpp            | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/llvm/CodeGen/MachineFunctionPass.h b/include/llvm/CodeGen/MachineFunctionPass.h
index 973babd702a..77af52a3474 100644
--- a/include/llvm/CodeGen/MachineFunctionPass.h
+++ b/include/llvm/CodeGen/MachineFunctionPass.h
@@ -33,10 +33,11 @@ struct MachineFunctionPass : public FunctionPass {
 
   // FIXME: This pass should declare that the pass does not invalidate any LLVM
   // passes.
-
   virtual bool runOnFunction(Function &F) {
     return runOnMachineFunction(MachineFunction::get(&F));
   }
+  
+  virtual void virtfn();  // out of line virtual fn to give class a home.
 };
 
 } // End llvm namespace
diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp
index 05e863be750..6a36c4a58c5 100644
--- a/lib/CodeGen/MachineFunction.cpp
+++ b/lib/CodeGen/MachineFunction.cpp
@@ -38,6 +38,8 @@ using namespace llvm;
 static AnnotationID MF_AID(
   AnnotationManager::getID("CodeGen::MachineCodeForFunction"));
 
+// Out of line virtual function to home classes.
+void MachineFunctionPass::virtfn() {}
 
 namespace {
   struct VISIBILITY_HIDDEN Printer : public MachineFunctionPass {