[AVR] Removed redundant anchor() functions

Also cleaned up some comments and added the `override` qualifier to a
method.

Author: Dylan McKay

lib/Target/AVR/AVRMachineFunctionInfo.cpp

@@ -19,29 +19,29 @@
 namespace llvm
 {
 
-/// AVRMachineFunctionInfo - This class is derived from MachineFunction and
-/// contains private AVR target-specific information for each MachineFunction.
+/*!
+ * \brief This class is derived from MachineFunction and
+ *         contains private AVR target-specific information for each MachineFunction.
+ */
 class AVRMachineFunctionInfo : public MachineFunctionInfo
 {
-  virtual void anchor();
-
-  /// HasSpills - Indicates if a register has been spilled by the register
+  /// Indicates if a register has been spilled by the register
   /// allocator.
   bool HasSpills;
 
-  /// HasAllocas - Indicates if there are any fixed size allocas present.
+  /// Indicates if there are any fixed size allocas present.
   /// Note that if there are only variable sized allocas this is set to false.
   bool HasAllocas;
 
-  /// HasStackArgs - Indicates if arguments passed using the stack are being
+  /// Indicates if arguments passed using the stack are being
   /// used inside the function.
   bool HasStackArgs;
 
-  /// CalleeSavedFrameSize - Size of the callee-saved register portion of the
+  /// Size of the callee-saved register portion of the
   /// stack frame in bytes.
   unsigned CalleeSavedFrameSize;
 
-  /// VarArgsFrameIndex - FrameIndex for start of varargs area.
+  /// FrameIndex for start of varargs area.
   int VarArgsFrameIndex;
 public:
   AVRMachineFunctionInfo() :

lib/Target/AVR/AVRMachineFunctionInfo.h

@@ -23,7 +23,6 @@
 
 using namespace llvm;
 
-void AVRSubtarget::anchor() { }
 
 AVRSubtarget::AVRSubtarget(const std::string &TT, const std::string &CPU,
                            const std::string &FS, AVRTargetMachine &TM) :

lib/Target/AVR/AVRSubtarget.cpp

@@ -33,7 +33,6 @@ namespace llvm
 //! \brief Holds information about an AVR subtarget.
 class AVRSubtarget : public AVRGenSubtargetInfo
 {
-  virtual void anchor();
 
 public:
   //! \brief Creates an AVR subtarget.

lib/Target/AVR/AVRSubtarget.h

@@ -18,7 +18,7 @@ namespace llvm
 class AVRTargetObjectFile : public TargetLoweringObjectFileELF
 {
 public:
-  void Initialize(MCContext &ctx, const TargetMachine &TM);
+  void Initialize(MCContext &ctx, const TargetMachine &TM) override;
 
   const MCSection *SelectSectionForGlobal(const GlobalValue *GV,
                                           SectionKind Kind,

lib/Target/AVR/AVRTargetObjectFile.h

@@ -15,7 +15,6 @@
 
 namespace llvm {
 class AVRTargetStreamer : public MCTargetStreamer {
-  virtual void anchor();
 
 public:
   explicit AVRTargetStreamer(MCStreamer &S);

lib/Target/AVR/AVRTargetStreamer.h

@@ -18,7 +18,6 @@ add_llvm_target(AVRCodeGen
   AVRInstrInfo.cpp
   AVRISelDAGToDAG.cpp
   AVRISelLowering.cpp
-  AVRMachineFunctionInfo.cpp
   AVRMCInstLower.cpp
   AVRRegisterInfo.cpp
   AVRSelectionDAGInfo.cpp

lib/Target/AVR/CMakeLists.txt

@@ -16,7 +16,6 @@
 
 using namespace llvm;
 
-void AVRMCAsmInfo::anchor() { }
 
 AVRMCAsmInfo::AVRMCAsmInfo(StringRef TT)
 {

lib/Target/AVR/MCTargetDesc/AVRMCAsmInfo.cpp

@@ -23,7 +23,6 @@ class StringRef;
 
 class AVRMCAsmInfo : public MCAsmInfo
 {
-  virtual void anchor();
 public:
   explicit AVRMCAsmInfo(StringRef TT);
 };

lib/Target/AVR/MCTargetDesc/AVRMCAsmInfo.h

@@ -20,8 +20,6 @@ using namespace llvm;
 // pin vtable to this file
 AVRTargetStreamer::AVRTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
 
-void AVRTargetStreamer::anchor() {}
-
 AVRTargetAsmStreamer::AVRTargetAsmStreamer(MCStreamer &S,
                                                formatted_raw_ostream &OS)
     : AVRTargetStreamer(S), OS(OS) {}