commit b227930cd6850e4c47358e671dbe2cdacb430def
author Tobias Grosser <grosser@fim.uni-passau.de> Wed Oct 13 11:02:44 2010 +0000
committer Tobias Grosser <grosser@fim.uni-passau.de> Wed Oct 13 11:02:44 2010 +0000
tree 7bdda5b853ae63af2f8ac7bb946582f344e785ca
parent ede42b0a22fdb57eb70d0d8c780dc5d3283397c0

Add Region::isTopLevelRegion().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116402 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Analysis/RegionInfo.cpp

diff --git a/lib/Analysis/RegionInfo.cpp b/lib/Analysis/RegionInfo.cpp
index 9d84f55..d26135c 100644
--- a/lib/Analysis/RegionInfo.cpp
+++ b/lib/Analysis/RegionInfo.cpp
@@ -140,8 +140,7 @@
 
   BasicBlock *entry = getEntry(), *exit = getExit();
 
-  // TopLevelRegion
-  if (!exit)
+  if (isTopLevelRegion())
     return false;
 
   for (pred_iterator PI = pred_begin(entry), PE = pred_end(entry); PI != PE;
@@ -810,9 +809,10 @@
 void RegionInfo::splitBlock(BasicBlock* NewBB, BasicBlock *OldBB)
 {
   Region *R = getRegionFor(OldBB);
+
   setRegionFor(NewBB, R);
 
-  while (R->getEntry() == OldBB && R->getParent()) {
+  while (R->getEntry() == OldBB && !R->isTopLevelRegion()) {
     R->replaceEntry(NewBB);
     R = R->getParent();
   }