diff --git a/lib/CodeGen/InstrSched/InstrScheduling.cpp b/lib/CodeGen/InstrSched/InstrScheduling.cpp
index 1d4c180..2271c78 100644
--- a/lib/CodeGen/InstrSched/InstrScheduling.cpp
+++ b/lib/CodeGen/InstrSched/InstrScheduling.cpp
@@ -352,18 +352,18 @@
   unsigned int totalInstrCount;
   cycles_t curTime;
   cycles_t nextEarliestIssueTime;		// next cycle we can issue
-  vector<std::hash_set<const SchedGraphNode*> > choicesForSlot; // indexed by slot#
+  vector<hash_set<const SchedGraphNode*> > choicesForSlot; // indexed by slot#
   vector<const SchedGraphNode*> choiceVec;	// indexed by node ptr
   vector<int> numInClass;			// indexed by sched class
   vector<cycles_t> nextEarliestStartTime;	// indexed by opCode
-  std::hash_map<const SchedGraphNode*, DelaySlotInfo*> delaySlotInfoForBranches;
+  hash_map<const SchedGraphNode*, DelaySlotInfo*> delaySlotInfoForBranches;
 						// indexed by branch node ptr 
   
 public:
   SchedulingManager(const TargetMachine& _target, const SchedGraph* graph,
                     SchedPriorities& schedPrio);
   ~SchedulingManager() {
-    for (std::hash_map<const SchedGraphNode*,
+    for (hash_map<const SchedGraphNode*,
            DelaySlotInfo*>::iterator I = delaySlotInfoForBranches.begin(),
            E = delaySlotInfoForBranches.end(); I != E; ++I)
       delete I->second;
@@ -422,7 +422,7 @@
     return choiceVec[i];
   }
   
-  inline std::hash_set<const SchedGraphNode*>& getChoicesForSlot(unsigned slotNum) {
+  inline hash_set<const SchedGraphNode*>& getChoicesForSlot(unsigned slotNum) {
     assert(slotNum < nslots);
     return choicesForSlot[slotNum];
   }
@@ -497,7 +497,7 @@
   inline DelaySlotInfo* getDelaySlotInfoForInstr(const SchedGraphNode* bn,
 						 bool createIfMissing=false)
   {
-    std::hash_map<const SchedGraphNode*, DelaySlotInfo*>::const_iterator
+    hash_map<const SchedGraphNode*, DelaySlotInfo*>::const_iterator
       I = delaySlotInfoForBranches.find(bn);
     if (I != delaySlotInfoForBranches.end())
       return I->second;
diff --git a/lib/CodeGen/InstrSched/SchedGraph.cpp b/lib/CodeGen/InstrSched/SchedGraph.cpp
index 96962ce..8a9c8e5 100644
--- a/lib/CodeGen/InstrSched/SchedGraph.cpp
+++ b/lib/CodeGen/InstrSched/SchedGraph.cpp
@@ -27,7 +27,6 @@
 
 using std::vector;
 using std::pair;
-using std::hash_map;
 using std::cerr;
 
 //*********************** Internal Data Structures *************************/
diff --git a/lib/CodeGen/InstrSched/SchedGraph.h b/lib/CodeGen/InstrSched/SchedGraph.h
index aa25881..7db22d6 100644
--- a/lib/CodeGen/InstrSched/SchedGraph.h
+++ b/lib/CodeGen/InstrSched/SchedGraph.h
@@ -211,14 +211,14 @@
 
 class SchedGraph :
   public NonCopyable,
-  private std::hash_map<const MachineInstr*, SchedGraphNode*>
+  private hash_map<const MachineInstr*, SchedGraphNode*>
 {
 private:
   std::vector<const BasicBlock*> bbVec; // basic blocks included in the graph
   SchedGraphNode* graphRoot;		// the root and leaf are not inserted
   SchedGraphNode* graphLeaf;		//  in the hash_map (see getNumNodes())
   
-  typedef std::hash_map<const MachineInstr*, SchedGraphNode*> map_base;
+  typedef hash_map<const MachineInstr*, SchedGraphNode*> map_base;
 public:
   using map_base::iterator;
   using map_base::const_iterator;
diff --git a/lib/CodeGen/InstrSched/SchedPriorities.cpp b/lib/CodeGen/InstrSched/SchedPriorities.cpp
index 8a1c9a5..6277576 100644
--- a/lib/CodeGen/InstrSched/SchedPriorities.cpp
+++ b/lib/CodeGen/InstrSched/SchedPriorities.cpp
@@ -270,7 +270,7 @@
 				       const SchedGraphNode* graphNode) {
   const MachineInstr *MI = graphNode->getMachineInstr();
   
-  std::hash_map<const MachineInstr*, bool>::const_iterator
+  hash_map<const MachineInstr*, bool>::const_iterator
     ui = lastUseMap.find(MI);
   if (ui != lastUseMap.end())
     return ui->second;
diff --git a/lib/CodeGen/InstrSched/SchedPriorities.h b/lib/CodeGen/InstrSched/SchedPriorities.h
index f5c29b2..b01c1a4 100644
--- a/lib/CodeGen/InstrSched/SchedPriorities.h
+++ b/lib/CodeGen/InstrSched/SchedPriorities.h
@@ -25,7 +25,7 @@
 #include "llvm/CodeGen/InstrScheduling.h"
 #include "llvm/Target/MachineSchedInfo.h"
 #include <list>
-#include <ext/hash_set>
+#include <Support/hash_set>
 #include <iostream>
 class Function;
 class MachineInstr;
diff --git a/lib/CodeGen/MachineFunction.cpp b/lib/CodeGen/MachineFunction.cpp
index a435be6..ce39b45 100644
--- a/lib/CodeGen/MachineFunction.cpp
+++ b/lib/CodeGen/MachineFunction.cpp
@@ -266,7 +266,7 @@
 int
 MachineCodeForMethod::getOffset(const Value* val) const
 {
-  std::hash_map<const Value*, int>::const_iterator pair = offsets.find(val);
+  hash_map<const Value*, int>::const_iterator pair = offsets.find(val);
   return (pair == offsets.end())? INVALID_FRAME_OFFSET : pair->second;
 }