Instead of clearing the rewriter, don't attempt to rewrite dead phi nodes.
Also fix 80 column violation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72371 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/ScalarEvolutionExpander.cpp b/lib/Analysis/ScalarEvolutionExpander.cpp
index 0340627..191fcc0 100644
--- a/lib/Analysis/ScalarEvolutionExpander.cpp
+++ b/lib/Analysis/ScalarEvolutionExpander.cpp
@@ -615,7 +615,8 @@
 
 Value *SCEVExpander::expand(const SCEV *S) {
   // Check to see if we already expanded this.
-  std::map<SCEVHandle, AssertingVH<Value> >::iterator I = InsertedExpressions.find(S);
+  std::map<SCEVHandle, AssertingVH<Value> >::iterator I =
+    InsertedExpressions.find(S);
   if (I != InsertedExpressions.end())
     return I->second;