[AsmPrinter] Make EmitLinkage and EmitVisibility public

[nhaehnle]

Summary

This allows target to implement custom emit of global variables if
required. See subsequent patch for a use case.

Change-Id: I9654197e3df24503104a54c41fff06845aed37fe

[nhaehnle]

ping?

[nhaehnle]

ping

[arsenm]

LGTM

[chill]

llvm/trunk/include/llvm/CodeGen/AsmPrinter.h

628

A docstring?

[nhaehnle]

llvm/trunk/include/llvm/CodeGen/AsmPrinter.h

628

r363550

llvm/trunk/include/llvm/CodeGen/AsmPrinter.h

public:
   /// This callback can be used restore the original mode in case the
   /// inlineasm contains directives to switch modes.
   /// \p StartInfo - the original subtarget info before inline asm
   /// \p EndInfo   - the final subtarget info after parsing the inline asm,
   ///                or NULL if the value is unknown.
   virtual void emitInlineAsmEnd(const MCSubtargetInfo &StartInfo,
                                 const MCSubtargetInfo *EndInfo) const;
 
+  /// This emits visibility information about symbol, if this is supported by
+  /// the target.
+  void EmitVisibility(MCSymbol *Sym, unsigned Visibility,
+                      bool IsDefinition = true) const;
+
+  void EmitLinkage(const GlobalValue *GV, MCSymbol *GVSym) const;
+
 private:
   /// Private state for PrintSpecial()
   // Assign a unique ID to this machine instruction.
   mutable const MachineInstr *LastMI = nullptr;
   mutable unsigned LastFn = 0;
   mutable unsigned Counter = ~0U;
 
   /// This method emits the header for the current function.
private:
   /// emit file and position info. Returns SrcMgr memory buffer position.
   unsigned addInlineAsmDiagBuffer(StringRef AsmStr,
                                   const MDNode *LocMDNode) const;
 
   //===------------------------------------------------------------------===//
   // Internal Implementation Details
   //===------------------------------------------------------------------===//
 
-  /// This emits visibility information about symbol, if this is supported by
-  /// the target.
-  void EmitVisibility(MCSymbol *Sym, unsigned Visibility,
-                      bool IsDefinition = true) const;
-
-  void EmitLinkage(const GlobalValue *GV, MCSymbol *GVSym) const;
-
   void EmitJumpTableEntry(const MachineJumpTableInfo *MJTI,
                           const MachineBasicBlock *MBB, unsigned uid) const;
   void EmitLLVMUsedList(const ConstantArray *InitList);
   /// Emit llvm.ident metadata in an '.ident' directive.
   void EmitModuleIdents(Module &M);
   /// Emit bytes for llvm.commandline metadata.
   void EmitModuleCommandLines(Module &M);
   void EmitXXStructorList(const DataLayout &DL, const Constant *List,