[FunctionAttrs] Extract a helper function for the core logic used to

[oota-llvm.git] / lib / CodeGen / LiveDebugVariables.h

diff --git a/lib/CodeGen/LiveDebugVariables.h b/lib/CodeGen/LiveDebugVariables.h
index a69b974fe373c61466c7d8fea5d29f818e06162a..694aa1770c9cf64c50e1e34cd30462a26637cb82 100644 (file)
--- a/lib/CodeGen/LiveDebugVariables.h
+++ b/lib/CodeGen/LiveDebugVariables.h
@@ -18,20 +18,28 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef LLVM_CODEGEN_LIVEDEBUGVARIABLES_H
-#define LLVM_CODEGEN_LIVEDEBUGVARIABLES_H
+#ifndef LLVM_LIB_CODEGEN_LIVEDEBUGVARIABLES_H
+#define LLVM_LIB_CODEGEN_LIVEDEBUGVARIABLES_H
 
+#include "llvm/ADT/ArrayRef.h"
 #include "llvm/CodeGen/MachineFunctionPass.h"
+#include "llvm/IR/DebugInfo.h"
 
 namespace llvm {
 
-class LiveDebugVariables : public MachineFunctionPass {
+class LiveInterval;
+class LiveIntervals;
+class VirtRegMap;
+
+class LLVM_LIBRARY_VISIBILITY LiveDebugVariables : public MachineFunctionPass {
   void *pImpl;
+  DenseMap<const Function *, DISubprogram *> FunctionDIs;
+
 public:
   static char ID; // Pass identification, replacement for typeid
 
   LiveDebugVariables();
-  ~LiveDebugVariables();
+  ~LiveDebugVariables() override;
 
   /// renameRegister - Move any user variables in OldReg to NewReg:SubIdx.
   /// @param OldReg Old virtual register that is going away.
@@ -40,21 +48,29 @@ public:
   ///               register.
   void renameRegister(unsigned OldReg, unsigned NewReg, unsigned SubIdx);
 
+  /// splitRegister - Move any user variables in OldReg to the live ranges in
+  /// NewRegs where they are live. Mark the values as unavailable where no new
+  /// register is live.
+  void splitRegister(unsigned OldReg, ArrayRef<unsigned> NewRegs,
+                     LiveIntervals &LIS);
+
   /// emitDebugValues - Emit new DBG_VALUE instructions reflecting the changes
   /// that happened during register allocation.
-  void emitDebugValues();
+  /// @param VRM Rename virtual registers according to map.
+  void emitDebugValues(VirtRegMap *VRM);
 
   /// dump - Print data structures to dbgs().
   void dump();
 
 private:
 
-  virtual bool runOnMachineFunction(MachineFunction &);
-  virtual void releaseMemory();
-  virtual void getAnalysisUsage(AnalysisUsage &) const;
+  bool runOnMachineFunction(MachineFunction &) override;
+  void releaseMemory() override;
+  void getAnalysisUsage(AnalysisUsage &) const override;
+  bool doInitialization(Module &) override;
 
 };
 
 } // namespace llvm
 
-#endif // LLVM_CODEGEN_LIVEDEBUGVARIABLES_H
+#endif