Back out Owen's 6/9 changes. They broke MultiSource/Benchmarks/Prolangs-C/bison (and perhaps others).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28747 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/Scalar/LoopUnswitch.cpp

@@ -73,8 +73,6 @@ namespace {
       AU.addPreservedID(LoopSimplifyID);
       AU.addRequired<LoopInfo>();
       AU.addPreserved<LoopInfo>();
-      AU.addRequiredID(LCSSAID);
-      AU.addPreservedID(LCSSAID);
     }
 
   private:
@@ -201,8 +199,6 @@ bool LoopUnswitch::visitLoop(Loop *L) {
       }
   }
     
-  assert(L->isLCSSAForm());
-  
   return Changed;
 }
 

lib/Transforms/Utils/LCSSA.cpp

@@ -98,7 +98,7 @@ bool LCSSA::runOnFunction(Function &F) {
   for (LoopInfo::iterator I = LI->begin(), E = LI->end(); I != E; ++I) {
     changed |= visitSubloop(*I);
   }
-  
+      
   return changed;
 }
 
@@ -132,8 +132,6 @@ bool LCSSA::visitSubloop(Loop* L) {
     processInstruction(*I, exitBlocks);
   }
   
-  assert(L->isLCSSAForm());
-  
   return true;
 }