* Fix a nasty initializer ordering bug. Any only-CFG passes which registered
themselves before the CFGOnlyAnalysis vector initialized got forgotten and
thus got invalidated and recomputed.
In particular, in my compiled version of gccas, the Loop information pass was
being recomputed unnecessarily.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9074 91177308-0d34-0410-b5e6-96231b3b80d8