blockfreq: Remove unnecessary template parameters

Moves redundant template parameters into an implementation detail of
BlockFrequencyInfoImpl.

No functionality change.

<rdar://problem/14292693>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206084 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 24 insertions, 9 deletions

diff --git a/include/llvm/Analysis/BlockFrequencyInfo.h b/include/llvm/Analysis/BlockFrequencyInfo.h
index 79be0177d6..3289a2823c 100644
--- a/include/llvm/Analysis/BlockFrequencyInfo.h
+++ b/include/llvm/Analysis/BlockFrequencyInfo.h
@@ -21,14 +21,12 @@
 namespace llvm {
 
 class BranchProbabilityInfo;
-template <class BlockT, class FunctionT, class BranchProbInfoT>
-class BlockFrequencyInfoImpl;
+template <class BlockT> class BlockFrequencyInfoImpl;
 
 /// BlockFrequencyInfo pass uses BlockFrequencyInfoImpl implementation to
 /// estimate IR basic block frequencies.
 class BlockFrequencyInfo : public FunctionPass {
-  typedef BlockFrequencyInfoImpl<BasicBlock, Function, BranchProbabilityInfo>
-  ImplType;
+  typedef BlockFrequencyInfoImpl<BasicBlock> ImplType;
   std::unique_ptr<ImplType> BFI;
 
 public:
diff --git a/include/llvm/Analysis/BlockFrequencyInfoImpl.h b/include/llvm/Analysis/BlockFrequencyInfoImpl.h
index fa5e799942..9edaa98625 100644
--- a/include/llvm/Analysis/BlockFrequencyInfoImpl.h
+++ b/include/llvm/Analysis/BlockFrequencyInfoImpl.h
@@ -29,16 +29,35 @@
 namespace llvm {
 
 
+class BranchProbabilityInfo;
 class BlockFrequencyInfo;
+class MachineBranchProbabilityInfo;
 class MachineBlockFrequencyInfo;
 
+namespace bfi_detail {
+template <class BlockT> struct TypeMap {};
+template <> struct TypeMap<BasicBlock> {
+  typedef BasicBlock BlockT;
+  typedef Function FunctionT;
+  typedef BranchProbabilityInfo BlockProbInfoT;
+};
+template <> struct TypeMap<MachineBasicBlock> {
+  typedef MachineBasicBlock BlockT;
+  typedef MachineFunction FunctionT;
+  typedef MachineBranchProbabilityInfo BlockProbInfoT;
+};
+}
+
 /// BlockFrequencyInfoImpl implements block frequency algorithm for IR and
 /// Machine Instructions. Algorithm starts with value ENTRY_FREQ
 /// for the entry block and then propagates frequencies using branch weights
 /// from (Machine)BranchProbabilityInfo. LoopInfo is not required because
 /// algorithm can find "backedges" by itself.
-template<class BlockT, class FunctionT, class BlockProbInfoT>
+template <class BT>
 class BlockFrequencyInfoImpl {
+  typedef typename bfi_detail::TypeMap<BT>::BlockT BlockT;
+  typedef typename bfi_detail::TypeMap<BT>::FunctionT FunctionT;
+  typedef typename bfi_detail::TypeMap<BT>::BlockProbInfoT BlockProbInfoT;
 
   DenseMap<const BlockT *, BlockFrequency> Freqs;
 
diff --git a/include/llvm/CodeGen/MachineBlockFrequencyInfo.h b/include/llvm/CodeGen/MachineBlockFrequencyInfo.h
index fd8e1494ce..1aef689eb7 100644
--- a/include/llvm/CodeGen/MachineBlockFrequencyInfo.h
+++ b/include/llvm/CodeGen/MachineBlockFrequencyInfo.h
@@ -22,14 +22,12 @@ namespace llvm {
 
 class MachineBasicBlock;
 class MachineBranchProbabilityInfo;
-template <class BlockT, class FunctionT, class BranchProbInfoT>
-class BlockFrequencyInfoImpl;
+template <class BlockT> class BlockFrequencyInfoImpl;
 
 /// MachineBlockFrequencyInfo pass uses BlockFrequencyInfoImpl implementation
 /// to estimate machine basic block frequencies.
 class MachineBlockFrequencyInfo : public MachineFunctionPass {
-  typedef BlockFrequencyInfoImpl<MachineBasicBlock, MachineFunction,
-                                 MachineBranchProbabilityInfo> ImplType;
+  typedef BlockFrequencyInfoImpl<MachineBasicBlock> ImplType;
   std::unique_ptr<ImplType> MBFI;
 
 public: