Implement target independent TLS compatible with glibc's emutls.c.

[oota-llvm.git] / include / llvm / CodeGen / MachineSSAUpdater.h

diff --git a/include/llvm/CodeGen/MachineSSAUpdater.h b/include/llvm/CodeGen/MachineSSAUpdater.h
index 979ef0113ba8e5c2861e2d3634badee6dd80d11b..5f988ad86320f6691e022312e23ffb993f15c096 100644 (file)
--- a/include/llvm/CodeGen/MachineSSAUpdater.h
+++ b/include/llvm/CodeGen/MachineSSAUpdater.h
@@ -14,6 +14,9 @@
 #ifndef LLVM_CODEGEN_MACHINESSAUPDATER_H
 #define LLVM_CODEGEN_MACHINESSAUPDATER_H
 
+#include "llvm/Support/Allocator.h"
+#include "llvm/Support/Compiler.h"
+
 namespace llvm {
   class MachineBasicBlock;
   class MachineFunction;
@@ -23,16 +26,14 @@ namespace llvm {
   class TargetInstrInfo;
   class TargetRegisterClass;
   template<typename T> class SmallVectorImpl;
-  class BumpPtrAllocator;
+  template<typename T> class SSAUpdaterTraits;
 
 /// MachineSSAUpdater - This class updates SSA form for a set of virtual
 /// registers defined in multiple blocks.  This is used when code duplication
 /// or another unstructured transformation wants to rewrite a set of uses of one
 /// vreg with uses of a set of vregs.
 class MachineSSAUpdater {
-public:
-  class BBInfo;
-  typedef SmallVectorImpl<BBInfo*> BlockListTy;
+  friend class SSAUpdaterTraits<MachineSSAUpdater>;
 
 private:
   /// AvailableVals - This keeps track of which value to use on a per-block
@@ -40,11 +41,6 @@ private:
   //typedef DenseMap<MachineBasicBlock*, unsigned > AvailableValsTy;
   void *AV;
 
-  /// BBMap - The GetValueAtEndOfBlock method maintains this mapping from
-  /// basic blocks to BBInfo structures.
-  /// typedef DenseMap<MachineBasicBlock*, BBInfo*> BBMapTy;
-  void *BM;
-
   /// VR - Current virtual register whose uses are being updated.
   unsigned VR;
 
@@ -61,7 +57,7 @@ public:
   /// MachineSSAUpdater constructor.  If InsertedPHIs is specified, it will be
   /// filled in with all PHI Nodes created by rewriting.
   explicit MachineSSAUpdater(MachineFunction &MF,
-                             SmallVectorImpl<MachineInstr*> *InsertedPHIs = 0);
+                        SmallVectorImpl<MachineInstr*> *InsertedPHIs = nullptr);
   ~MachineSSAUpdater();
 
   /// Initialize - Reset this object to get ready for a new set of SSA
@@ -109,19 +105,10 @@ public:
   void RewriteUse(MachineOperand &U);
 
 private:
-  void ReplaceRegWith(unsigned OldReg, unsigned NewReg);
   unsigned GetValueAtEndOfBlockInternal(MachineBasicBlock *BB);
-  void BuildBlockList(MachineBasicBlock *BB, BlockListTy *BlockList,
-                      BumpPtrAllocator *Allocator);
-  void FindDominators(BlockListTy *BlockList);
-  void FindPHIPlacement(BlockListTy *BlockList);
-  void FindAvailableVals(BlockListTy *BlockList);
-  void FindExistingPHI(MachineBasicBlock *BB, BlockListTy *BlockList);
-  bool CheckIfPHIMatches(MachineInstr *PHI);
-  void RecordMatchingPHI(MachineInstr *PHI);
-
-  void operator=(const MachineSSAUpdater&); // DO NOT IMPLEMENT
-  MachineSSAUpdater(const MachineSSAUpdater&);     // DO NOT IMPLEMENT
+
+  void operator=(const MachineSSAUpdater&) = delete;
+  MachineSSAUpdater(const MachineSSAUpdater&) = delete;
 };
 
 } // End llvm namespace