remove dead code. The exit block list is computed on demand, thus does not

need to be updated.  This code is a relic from when it did.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22775 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Utils/LoopSimplify.cpp b/lib/Transforms/Utils/LoopSimplify.cpp
index fcea05402d02c36b1cbfda9cea48a8ecb37e4b01..2df10ce92f4dea5a3fac67462bb3bdcc17382d22 100644 (file)
--- a/lib/Transforms/Utils/LoopSimplify.cpp
+++ b/lib/Transforms/Utils/LoopSimplify.cpp
@@ -325,21 +325,6 @@ void LoopSimplify::InsertPreheaderForLoop(Loop *L) {
   if (Loop *Parent = L->getParentLoop())
     Parent->addBasicBlockToLoop(NewBB, getAnalysis<LoopInfo>());
 
-  // If the header for the loop used to be an exit node for another loop, then
-  // we need to update this to know that the loop-preheader is now the exit
-  // node.  Note that the only loop that could have our header as an exit node
-  // is a sibling loop, ie, one with the same parent loop, or one if it's
-  // children.
-  //
-  LoopInfo::iterator ParentLoops, ParentLoopsE;
-  if (Loop *Parent = L->getParentLoop()) {
-    ParentLoops = Parent->begin();
-    ParentLoopsE = Parent->end();
-  } else {      // Must check top-level loops...
-    ParentLoops = getAnalysis<LoopInfo>().begin();
-    ParentLoopsE = getAnalysis<LoopInfo>().end();
-  }
-
   DominatorSet &DS = getAnalysis<DominatorSet>();  // Update dominator info
   DominatorTree &DT = getAnalysis<DominatorTree>();