Change DSGraph stuff to use hash_(set|map) instead of std::(set|map)
This change provides a small (3%) but consistent speedup


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5460 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/DataStructure/Printer.cpp b/lib/Analysis/DataStructure/Printer.cpp
index e9b5a17..baff12b 100644
--- a/lib/Analysis/DataStructure/Printer.cpp
+++ b/lib/Analysis/DataStructure/Printer.cpp
@@ -87,8 +87,8 @@
   static void addCustomGraphFeatures(const DSGraph *G,
                                      GraphWriter<const DSGraph*> &GW) {
     // Add scalar nodes to the graph...
-    const std::map<Value*, DSNodeHandle> &VM = G->getScalarMap();
-    for (std::map<Value*, DSNodeHandle>::const_iterator I = VM.begin();
+    const hash_map<Value*, DSNodeHandle> &VM = G->getScalarMap();
+    for (hash_map<Value*, DSNodeHandle>::const_iterator I = VM.begin();
          I != VM.end(); ++I)
       if (!isa<GlobalValue>(I->first)) {
         std::stringstream OS;