LegacyPassManagers.h: increase the size of PMDataManager::HigherLevelAnalysis.

In a Clang bootstrap, the median and max size was 9.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215337 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/IR/LegacyPassManagers.h

@@ -393,7 +393,7 @@ private:
 
   // Collection of higher level analysis used by the pass managed by
   // this manager.
-  SmallVector<Pass *, 8> HigherLevelAnalysis;
+  SmallVector<Pass *, 16> HigherLevelAnalysis;
 
   unsigned Depth;
 };