LTO+Debug Info: revert r182791.

Since the testing case uses ref_addr, which requires version 3+ to work,
we will solve the dwarf version issue first.

This patch also causes failures in one of the bots. I will update the patch
accordingly in my next attempt.

rdar://13926659


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182867 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/AsmPrinter/DwarfDebug.h

@@ -402,9 +402,6 @@ class DwarfDebug {
   // Whether or not we're emitting info for older versions of gdb on darwin.
   bool IsDarwinGDBCompat;
 
-  // Whether or not we use ref_addr in the generated DWARF.
-  unsigned UseRefAddr;
-
   // DWARF5 Experimental Options
   bool HasDwarfAccelTables;
   bool HasSplitDwarf;
@@ -604,9 +601,6 @@ private:
   /// \brief Return Label immediately following the instruction.
   MCSymbol *getLabelAfterInsn(const MachineInstr *MI);
 
-  /// \brief Search all compile units to find the SP DIE for the given MDNode.
-  DIE *findSPDieInAllCUs(const MDNode *N);
-
 public:
   //===--------------------------------------------------------------------===//
   // Main entry points.
@@ -646,9 +640,6 @@ public:
   /// output to the limitations of darwin gdb.
   bool useDarwinGDBCompat() { return IsDarwinGDBCompat; }
 
-  bool getUseRefAddr() { return UseRefAddr; }
-  void setUseRefAddr(bool RefAddr) { UseRefAddr = RefAddr; }
-
   // Experimental DWARF5 features.
 
   /// \brief Returns whether or not to emit tables that dwarf consumers can