From 574e7166e07ee64888faf8a60ded7855c56cf0a7 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Mon, 31 Dec 2007 04:56:33 +0000
Subject: properly encapsulate the parent field of MBB and MI with get/set
 accessors.

llvm-svn: 45469
---
 llvm/lib/CodeGen/MachineFunction.cpp | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

(limited to 'llvm/lib/CodeGen/MachineFunction.cpp')

diff --git a/llvm/lib/CodeGen/MachineFunction.cpp b/llvm/lib/CodeGen/MachineFunction.cpp
index 595159b..3f2c119 100644
--- a/llvm/lib/CodeGen/MachineFunction.cpp
+++ b/llvm/lib/CodeGen/MachineFunction.cpp
@@ -111,12 +111,14 @@ MachineBasicBlock* ilist_traits<MachineBasicBlock>::createSentinel() {
 }
 
 void ilist_traits<MachineBasicBlock>::transferNodesFromList(
-  iplist<MachineBasicBlock, ilist_traits<MachineBasicBlock> >& toList,
-  ilist_iterator<MachineBasicBlock> first,
-  ilist_iterator<MachineBasicBlock> last) {
-  if (Parent != toList.Parent)
-    for (; first != last; ++first)
-      first->Parent = toList.Parent;
+            iplist<MachineBasicBlock, ilist_traits<MachineBasicBlock> >& toList,
+            ilist_iterator<MachineBasicBlock> first,
+            ilist_iterator<MachineBasicBlock> last) {
+  // If splicing withing the same function, no change.
+  if (Parent == toList.Parent) return;
+  
+  for (; first != last; ++first)
+    first->setParent(toList.Parent);
 }
 
 MachineFunction::MachineFunction(const Function *F,
-- 
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