Fix spelling of "hierarchy" in comments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53489 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/LoopPass.cpp b/lib/Analysis/LoopPass.cpp
index 4cbafab..460a1b0 100644
--- a/lib/Analysis/LoopPass.cpp
+++ b/lib/Analysis/LoopPass.cpp
@@ -32,7 +32,7 @@
   CurrentLoop = NULL;
 }
 
-/// Delete loop from the loop queue and loop hierarcy (LoopInfo). 
+/// Delete loop from the loop queue and loop hierarchy (LoopInfo). 
 void LPPassManager::deleteLoopFromQueue(Loop *L) {
 
   if (Loop *ParentLoop = L->getParentLoop()) { // Not a top-level loop.