X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FCodeGen%2FMachineLoopInfo.h;h=99da6b27450e8a5e7e18ddd0c7cea5d6c72ac4e9;hb=b09c146b116359616f6cbd4c8b3328607e00ff42;hp=2d19d7a2f80349618c924bb446a324f69ebc786c;hpb=9d59d9f8495b0361c9ffd1dc82888d8e7ba5070e;p=oota-llvm.git

diff --git a/include/llvm/CodeGen/MachineLoopInfo.h b/include/llvm/CodeGen/MachineLoopInfo.h
index 2d19d7a2f80..99da6b27450 100644
--- a/include/llvm/CodeGen/MachineLoopInfo.h
+++ b/include/llvm/CodeGen/MachineLoopInfo.h
@@ -7,7 +7,7 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// This file defines the MachineLoopInfo class that is used to identify natural 
+// This file defines the MachineLoopInfo class that is used to identify natural
 // loops and determine the loop depth of various nodes of the CFG.  Note that
 // natural loops may actually be several loops that share the same header node.
 //
@@ -30,63 +30,65 @@
 #ifndef LLVM_CODEGEN_MACHINE_LOOP_INFO_H
 #define LLVM_CODEGEN_MACHINE_LOOP_INFO_H
 
-#include "llvm/CodeGen/MachineFunctionPass.h"
 #include "llvm/Analysis/LoopInfo.h"
+#include "llvm/CodeGen/MachineFunctionPass.h"
 
 namespace llvm {
 
-// Provide overrides for Loop methods that don't make sense for machine loops.
-template<> inline
-PHINode *LoopBase<MachineBasicBlock>::getCanonicalInductionVariable() const {
-  assert(0 && "getCanonicalInductionVariable not supported for machine loops!");
-  return 0;
-}
-
-template<> inline Instruction*
-LoopBase<MachineBasicBlock>::getCanonicalInductionVariableIncrement() const {
-  assert(0 &&
-     "getCanonicalInductionVariableIncrement not supported for machine loops!");
-  return 0;
-}
-
-template<>
-inline bool LoopBase<MachineBasicBlock>::isLoopInvariant(Value *V) const {
-  assert(0 && "isLoopInvariant not supported for machine loops!");
-  return false;
-}
-
-template<>
-inline Value *LoopBase<MachineBasicBlock>::getTripCount() const {
-  assert(0 && "getTripCount not supported for machine loops!");
-  return 0;
-}
-
-template<>
-inline bool LoopBase<MachineBasicBlock>::isLCSSAForm() const {
-  assert(0 && "isLCSSAForm not supported for machine loops");
-  return false;
-}
-
-typedef LoopBase<MachineBasicBlock> MachineLoop;
+// Implementation in LoopInfoImpl.h
+#ifdef __GNUC__
+class MachineLoop;
+__extension__ extern template class LoopBase<MachineBasicBlock, MachineLoop>;
+#endif
 
-class MachineLoopInfo : public MachineFunctionPass {
-  LoopInfoBase<MachineBasicBlock> LI;
-  friend class LoopBase<MachineBasicBlock>;
+class MachineLoop : public LoopBase<MachineBasicBlock, MachineLoop> {
+public:
+  MachineLoop();
+
+  /// getTopBlock - Return the "top" block in the loop, which is the first
+  /// block in the linear layout, ignoring any parts of the loop not
+  /// contiguous with the part the contains the header.
+  MachineBasicBlock *getTopBlock();
 
-  void operator=(const MachineLoopInfo &);  // do not implement
-  MachineLoopInfo(const MachineLoopInfo &); // do not implement
+  /// getBottomBlock - Return the "bottom" block in the loop, which is the last
+  /// block in the linear layout, ignoring any parts of the loop not
+  /// contiguous with the part the contains the header.
+  MachineBasicBlock *getBottomBlock();
 
-  LoopInfoBase<MachineBasicBlock>& getBase() { return LI; }
+  void dump() const;
+
+private:
+  friend class LoopInfoBase<MachineBasicBlock, MachineLoop>;
+  explicit MachineLoop(MachineBasicBlock *MBB)
+    : LoopBase<MachineBasicBlock, MachineLoop>(MBB) {}
+};
+
+// Implementation in LoopInfoImpl.h
+#ifdef __GNUC__
+__extension__ extern template
+class LoopInfoBase<MachineBasicBlock, MachineLoop>;
+#endif
+
+class MachineLoopInfo : public MachineFunctionPass {
+  LoopInfoBase<MachineBasicBlock, MachineLoop> LI;
+  friend class LoopBase<MachineBasicBlock, MachineLoop>;
+
+  void operator=(const MachineLoopInfo &) LLVM_DELETED_FUNCTION;
+  MachineLoopInfo(const MachineLoopInfo &) LLVM_DELETED_FUNCTION;
 
 public:
   static char ID; // Pass identification, replacement for typeid
 
-  MachineLoopInfo() : MachineFunctionPass(&ID) {}
+  MachineLoopInfo() : MachineFunctionPass(ID) {
+    initializeMachineLoopInfoPass(*PassRegistry::getPassRegistry());
+  }
+
+  LoopInfoBase<MachineBasicBlock, MachineLoop>& getBase() { return LI; }
 
   /// iterator/begin/end - The interface to the top-level loops in the current
   /// function.
   ///
-  typedef LoopInfoBase<MachineBasicBlock>::iterator iterator;
+  typedef LoopInfoBase<MachineBasicBlock, MachineLoop>::iterator iterator;
   inline iterator begin() const { return LI.begin(); }
   inline iterator end() const { return LI.end(); }
   bool empty() const { return LI.empty(); }