Make MBBMap a DenseMap instead of a std::map.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55220 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp
index fb4de57..ebac0fe 100644
--- a/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -145,7 +145,7 @@
 FastISel::SelectInstructions(BasicBlock::iterator Begin,
                              BasicBlock::iterator End,
                              DenseMap<const Value*, unsigned> &ValueMap,
-                             std::map<const BasicBlock*,
+                             DenseMap<const BasicBlock*,
                                       MachineBasicBlock *> &MBBMap,
                              MachineBasicBlock *mbb) {
   MBB = mbb;
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index e789c4e..7ec5b85 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -320,7 +320,7 @@
     FunctionLoweringInfo(TargetLowering &TLI, Function &Fn,MachineFunction &MF);
 
     /// MBBMap - A mapping from LLVM basic blocks to their machine code entry.
-    std::map<const BasicBlock*, MachineBasicBlock *> MBBMap;
+    DenseMap<const BasicBlock*, MachineBasicBlock *> MBBMap;
 
     /// ValueMap - Since we emit code for the function a basic block at a time,
     /// we must remember which virtual registers hold the values for
@@ -330,7 +330,7 @@
     /// StaticAllocaMap - Keep track of frame indices for fixed sized allocas in
     /// the entry block.  This allows the allocas to be efficiently referenced
     /// anywhere in the function.
-    std::map<const AllocaInst*, int> StaticAllocaMap;
+    DenseMap<const AllocaInst*, int> StaticAllocaMap;
 
 #ifndef NDEBUG
     SmallSet<Instruction*, 8> CatchInfoLost;
@@ -1256,7 +1256,7 @@
   // If this is a static alloca, generate it as the frameindex instead of
   // computation.
   if (const AllocaInst *AI = dyn_cast<AllocaInst>(V)) {
-    std::map<const AllocaInst*, int>::iterator SI =
+    DenseMap<const AllocaInst*, int>::iterator SI =
       FuncInfo.StaticAllocaMap.find(AI);
     if (SI != FuncInfo.StaticAllocaMap.end())
       return DAG.getFrameIndex(SI->second, TLI.getPointerTy());