eliminate the std::ostream form of WriteAsOperand and update clients.

This also updates dominator related stuff.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79825 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/Scalar/PredicateSimplifier.cpp

@@ -425,10 +425,10 @@ namespace {
 #ifndef NDEBUG
     virtual ~ValueNumbering() {}
     virtual void dump() {
-      dump(*cerr.stream());
+      print(errs());
     }
 
-    void dump(std::ostream &os) {
+    void print(raw_ostream &os) {
       for (unsigned i = 1; i <= Values.size(); ++i) {
         os << i << " = ";
         WriteAsOperand(os, Values[i-1]);