Tell PassManager that this pass does not invalidate the CFG so that dominator

information and Loop info will not have to be recomputed after this runs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4269 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/InstrSched/InstrScheduling.cpp

@@ -1499,6 +1499,7 @@ namespace {
     // getAnalysisUsage - We use LiveVarInfo...
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
       AU.addRequired<FunctionLiveVarInfo>();
+      AU.setPreservesCFG();
     }
     
     bool runOnFunction(Function &F);